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Banking Trojan

Backdoor, Banking Trojan, Computer Security, Cryptocurrency hack, Cyber Security News, Malware, Network Security, Ransomware, Security Hacker, spyware, trojan,

A Scary Evolution & Alliance of TrickBot, Emotet and Ryuk Ransomware Attack

Ryuk first appeared in August 2018, and while not incredibly active across the globe, at least three organizations were hit with Ryuk infections over the course of the first two months of its operations, landing the attackers about $640,000 in ransom for their efforts. According to CrowdStrike analysis from late last week, Grim Spider has […]

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Bank Fraud, Banking & Financial Services, banking malware, Banking Trojan, Fraud Protection, IBM X-Force Research, Malware, malware injection, Man-in-the-Browser (MitB), Man-in-the-Browser (MitB) Malware, Threat Intelligence, Webinjection, X-Force,

BackSwap Malware Now Targets Six Banks in Spain

IBM X-Force researchers analyzed the activity of a relatively new banking Trojan known as BackSwap. BackSwap emerged in March 2018 and, until recently, had only targeted Polish banks. The malware’s target list now features six major banks in Spain.

According to X-Force analysis, BackSwap is its own malware project, but it is based on features that existed within the Tinba Trojan. The malware’s operators keep the code as their own project; in that sense, it is considered gang-owned and not commercial malware.

A Twist in the Tale

Overall, BackSwap is no more sophisticated than any other active banking Trojan. Its highlight is its webinjection mechanism. Instead of using the more common method of hooking browser functions, then creating different versions for each architecture, BackSwap injects JavaScript into the address bar.

By simulating user input to access the browser’s address bar and inserting the malicious script directly there, BackSwap can execute the script using JavaScript protocol URLs and bypass protections of both the browser and the bank’s third-party security controls.

In terms of what BackSwap does with the injections, this is where the novelty ends. Just as malware such as Zeus has been doing for over a decade, BackSwap uses malicious scripts to modify what victims see on their bank’s website in classic man-in-the-browser (MitB) style:

  • Scripts wait for a minimum amount of data to be transferred before replacing the destination account number.
  • Scripts inject mule account numbers on the fly via MitB.
  • Scripts hide the mule account number that the money will go to and instead present the original destination account the victim entered.

BackSwap’s Fraud Method

The likely fraud scenario based on BackSwap’s capabilities is in-session fraud automated by MitB malware scripts. The malware’s scripts wait for the user to go to a page where a transaction is to take place. When the victim initiates activity that’s interesting to the attacker, such as adding a payee or starting a money transfer, the malware replaces the destination account with a mule account number.

BackSwap malware functions

Figure 1: The BackSwap function responsible for account number replacement

Using MitB scripts to alter transaction details sent to the bank is not a new method. What’s new here is the way BackSwap implements it to circumvent third-party security on the bank’s website. This method can be more successful with banks that don’t require two-factor authentication (2FA) or out-of-band transaction authorization (OOBA) from customers moving money to other accounts.

Malware Spam and Then Some

BackSwap is most often delivered to users via malware spam, concealed in an attachment of a productivity file like Microsoft Word or bundled inside other programs. BackSwap favors popular freeware or open source programs and plants its code in the initialization phase of the program. When run during an early stage of the program’s execution, the code replaces the installation routine with malicious instructions that execute BackSwap instead. One interesting choice was Ollydbg.exe, which is a program often used by malware researchers.

Testing Attack Turfs

The malware’s attack scope has thus far been limited to a few banks in Poland and some banks in Spain, specifically targeting personal banking.

The limited number of banks in each country so far may suggest that BackSwap is still in testing. Our research team expects to see more testing in other geographies in the coming weeks, and possibly a wider scope of attack for this Trojan in the fourth quarter of 2018.

Will we see BackSwap on the top 10 list of financial malware in 2019? IBM X-Force will keep updating its information on BackSwap via the X-Force Exchange.

IBM X-Force Research

Figure 2: Top most prevalent financial malware families (2018 YTD)

Indicators of Compromise (IoCs)

Command-and-control (C&C) server IPs:

  • hxxps://5[.]61[.]47[.]74/batya/give.php
  • hxxps://103[.]242[.]117[.]248/batya/give.php
  • hxxps://mta116[.]megaonline[.]in
  • hxxps://czcmail[.]com (IP: 119[.]23[.]128[.]176)

Recent sample MD5s:

  • 180721A8551FBBCD763C320E7034E36C (WinGraph32.exe)
  • F44D28F852A99821B681C3EAF044C8D3 (OllyDbg.exe)

Interested in emerging security threats? Read the latest IBM X-Force Research

The post BackSwap Malware Now Targets Six Banks in Spain appeared first on Security Intelligence.

This post appeared first on Security Intelligence
Author: Limor Kessem

Android, Android Malware, Banking Trojan, Malware, Ransomware,

Dangerous Android Malware that Steals Banking Credentials, Call Forwarding, Keylogging, and Ransomware Activities

Android malware

A new Android malware that contains the functionalities of Banking Trojan, call forwarding, audio recording, keylogging and Ransomware Activities. The malware targeted the popular banking apps such as HFC, ICICI, SBI, Axis Bank and other E-Wallets. The malware operator needs more user interaction to be a successful attack, it continues to force the users in […]

The post Dangerous Android Malware that Steals Banking Credentials, Call Forwarding, Keylogging, and Ransomware Activities appeared first on GBHackers On Security.

Android, Android Apps, Android security, Banking Trojan, Cybercriminals, Google Play, IBM X-Force Research, Malware, Mobile Applications, Mobile Banking, Mobile Banking Fraud, Mobile Malware, Mobile Security, Threat Intelligence, X-Force,

Anubis Strikes Again: Mobile Malware Continues to Plague Users in Official App Stores

IBM X-Force mobile malware researchers have observed several developers actively uploading Android malware downloaders to the Google Play Store.

Following ongoing campaigns against Google Play, our research team has been monitoring banking malware activity in official app stores. The team recently reported that downloader apps in the store are being used as the first step in an infection routine that fetches the Marcher (aka Marcher ExoBot) and BankBot Anubis mobile banking Trojans. Users who unknowingly install the app on their devices are subsequently infected. Cybercriminals use these banking Trojans to facilitate financial fraud by stealing login credentials to banking apps, e-wallets and payment cards.

Starting in June, our team discovered a number of new malware downloader samples that infect users with BankBot Anubis (aka Go_P00t). The campaign features at least 10 malicious downloaders disguised as various applications, all of which fetch mobile banking Trojans that run on Android-based devices. While the number of downloaders may seem modest, each of those apps can fetch more than 1,000 samples from the criminal’s command-and-control (C&C) servers.

Finding new downloaders in the app store in connection with the BankBot Anubis malware could suggest that:

  • A given malware distributor/cybercrime faction has shifted from using Marcher to distributing BankBot Anubis; or
  • The threat actors distributing the malware on Google Play are offering their “expertise” as a service, spreading malware downloaders for different cybercrime factions that use mobile Trojans to facilitate financial fraud — aka “downloader-as-a-service.”

Such cybercrime services are common in the fraud and malware black markets. They entail a proven ability to infiltrate Google Play and plant malicious downloaders under the guise of benign-looking apps. These services can likely maintain the downloader’s C&C servers long enough to generate a steady stream of new infections, suggesting the thought-out operational security and know-how characteristic of organized cybercrime groups.

Read the white paper: Worried about mobile security? You should be

An Era of Mobile Malware Downloaders

As app store operators layer security to stymie the efforts of malicious developers, black-hat app distributors find ways to sidestep them. To circumvent ever-evolving app store defenses, mobile malware distributors rely on a strategy from the PC malware realms: Instead of uploading the actual malware to the store, which can result in sampling and detection at a very early stage in the distribution chain, they upload a downloader that may seem rather innocuous compared to actual malware.

In general, a downloader app is more likely to survive security checks and recurring scans, and once it lands on a user’s device, it can fetch the intended malware app. As the Chinese general Sun Tzu wrote in “The Art of War,” “The greatest victory is that which requires no battle.”

Sample Downloader Campaign From Current Analyses

In the current campaign, according to X-Force researchers, the downloader apps target Turkish-speaking users. They differ in type and visual style — from online shopping to financial services and even an automotive app — and are designed to look legitimate and enticing to users.

IBM X-Force ResearchIBM X-Force Research

IBM X-Force Research

Figure 1: Examples of malware downloader apps found on Google Play.

The variety of apps and styles indicates a large investment of resources on the part of the campaign’s operators, suggesting that a cybercrime service, rather than a single cybercrime faction, is likely responsible.

The downloaders themselves are rather stealthy, and VirusTotal missed all but one of the samples. The one that was found had zero detections by antivirus engines.

IBM X-Force Research

Figure 2: No detection rates on malicious downloaders.

In this campaign, the malicious downloader apps X-Force detected have the same code base as three apps that ThreatFabric reported in January 2018. The following characteristics show the similarity:

IBM X-Force Research

Figure 3: Code from sample downloader reported by ThreatFabric in January 2018.

IBM X-Force Research

Figure 4: Code from sample downloader discovered by X-Force in June 2018.

The resemblance is even more striking in the figure below. By removing all the key instances (**pE2**) from the string, we produced the same string from the January sample:

IBM X-Force Research

Figure 5: The code bases are very similar, suggesting that the same developer produced both apps.

With 10 downloaders at this point, the campaign appears to be scaling up.

Over time, we’ve seen the code evolve. As time went by between downloader versions, the developers added a simple obfuscation and expanded the downloader capabilities. The code was also altered slightly to avoid detection by Google Play’s security controls.

According to X-Force’s analysis, these changes suggest that the downloader app is being maintained on an ongoing basis — another sign that it is a commodity offered to cybercriminals or a specific group that’s focused on defrauding Turkish mobile banking users.

Anubis Masquerades as Google Protect

After a successful installation of the malicious downloader, the app fetches BankBot Anubis from one of its C&C servers. The BankBot Anubis malware then masquerades as an app called “Google Protect” and prompts the user to grant it accessibility rights.

BankBot Anubis Android malware app

Figure 6: Apps name in Turkish

IBM X-Force ResearchIBM X-Force Research

Figure 7: Malware asking for accessibility to keylog user credentials.

Why ask for accessibility? BankBot Anubis uses Android’s Accessibility services to perform keylogging as a way to obtain the infected user’s credentials when he or she accesses a targeted mobile banking app. In most Android banking Trojans, the malware launches a fake overlay screen when the user accesses a target app. The user then taps his or her account credentials into the fake overlay, which allows the malware to steal the data. BankBot Anubis streamlines this process.

By keylogging the user’s login information, the attacker can steal credentials from any app while avoiding the need to create custom overlays for each target. This malware is also able to take screen captures of the user’s screen, which it likely uses to steal credentials since the keyboard strokes are visible. These features are staples of PC banking malware and are evolving in Android malware as well.

The downloader apps in this particular campaign were designed to address Turkish users. With different botnets and configurations, BankBot Anubis itself also targets users in the following countries:

  • Australia
  • Austria
  • Azerbaijan
  • Belarus
  • Brazil
  • Canada
  • China
  • Czech Republic
  • France
  • Georgia
  • Germany
  • Hong Kong
  • India
  • Ireland
  • Israel
  • Japan
  • Kazakhstan
  • Luxembourg
  • Morocco
  • Netherlands
  • New Zealand
  • Oman
  • Poland
  • Russia
  • Scotland
  • Slovakia
  • Spain
  • Taiwan
  • Turkey
  • U.K.
  • U.S.

While there were 10 downloader apps in the Google Play Store at the time of this writing, the campaign is rather hefty. X-Force estimated the magnitude of campaigns on Google Play by the number of downloads, as well as the number and variety of payloads found. In one case, the researchers fetched more than 1,000 new samples of BankBot Anubis from just one C&C server. Each sample has a different MD5 signature, few of which were documented by any antivirus engine when tested against VirusTotal.

Official App Stores: A Fraudster’s Holy Grail

When it comes to maximizing the results of infection campaigns, mobile malware operators consider official app stores to be the holy grail. Getting a malicious app into an official store yields greater exposure to more potential victims, a cheap distribution channel and user trust. Moreover, malware apps that have already made it into an official store are more likely to fly under the radar of security controls for longer than those hosted on hijacked sites or rogue servers. IBM X-Force reports malicious apps to the official stores to have them removed before more users can be affected.

Malicious apps are a blight that both store operators and developers work hard to limit. Still, it is a recurring problem: In 2017, X-Force mobile researchers reported numerous occasions on which financial malware had sneaked into the Google Play Store, with the BankBot Android malware family leading the pack. The trend continues to escalate.

X-Force researchers suspect that the cybercrime services spreading mobile Trojans have mastered it as a malware campaign channel and may be monetizing it. While such cybercrime services are rather popular with PC malware distributors, its rise in the mobile malware realm is an escalating risk factor users and organizations should be aware of.

To learn more about keeping devices safe from mobile malware, read our mobile malware mitigation tips.

Read the white paper: Worried about mobile security? You should be

The post Anubis Strikes Again: Mobile Malware Continues to Plague Users in Official App Stores appeared first on Security Intelligence.

This post appeared first on Security Intelligence
Author: Shachar Gritzman

banking malware, Banking Trojan, Cyber Security News, Microsoft word, Torjan Horses/worms, Ursnif Banking Trojan,

A New Variant of Ursnif Banking Trojan Distributed Through Malicious Microsoft Word Documents

Ursnif Banking Trojan

A new improved version of the infamous Ursnif banking Trojan leverages Necurs botnet infrastructure targets Italian companies. The malware primarily targets the financial sector and it was detected first in year 2009. CSE Cybsec ZLab researchers spotted the new campaign to be active from 6th June, it hit’s Italian companies with a malicious Microsoft Word […]

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banking malware, Banking Trojan, Malware,

Banking Malware posed as a Popular Social Media App to Steal Financial Data From Online Banking Systems

Banking

Newly discovered Two Android Banking Trojan posed as popular social Media and banking apps to steal the victim’s financial information from online banking and payment systems Android Banking Trojan’s mainly targeting the financial sector such as bank and other financial institutions and compromising it to steal sensitive information such as username, password and credit card data. […]

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