In January of 2016, we found various “SmsSecurity” mobile apps that claimed to be from various banks. Since then, we’ve found some new variants of this attack that add new malicious capabilities. These capabilities include: anti-analysis measures, automatic rooting, language detection, and remote access via TeamViewer. In addition, SmsSecurity now cleverly uses the accessibility features of Android to help carry out its routines in a stealthy manner, without interaction from the user.Read More
Users of the TeamViewer remote-access service have been complaining in recent weeks about how their systems have been hacked into, unauthorized purchases made on their cards, their bank accounts emptied. Initially it was believed that this was due to a hack into TeamViewer itself, but the company has denied this. Instead, they have blamed password re-use, especially with millions of old passwords in the wild thanks to disclosed social network breaches.
Others have speculated that malware could be in use somehow, and that may be the case. We have evidence that trojanized TeamViewer installer packages have been used in a spam campaign that resulted in attackers gaining remote access to various systems. While this particular spam campaign used an old version of TeamViewer, we can’t dismiss the possibility of other attacks using newer versions.Read More
We discovered a potential targeted attack that makes use of legitimate script engine AutoHotkey, in combination with malicious script files. This file is distributed as an email attachment and disguised as a legitimate document with the filename “Military Financing.xlsm.” The user would need to enable macro for it to open fully, which would use AutoHotkey in loading the malicious script file to avoid detection.Read More
We noticed a series of testing submissions in VirusTotal that apparently came from the same group of malware developers in Moldova, at least based on the filenames and the submissions’ source. It appears they are working on a new malware that — based on how they were coded — is most likely intended to spread through spam emails embedded with malicious attachments.
The downloader malware’s payload is what makes it notable. It delivers a version of the Revisit remote administration tool, which is used to hijack the infected system. More importantly, it also delivers a malicious extension that could serve as a backdoor, stealing information keyed in on browsers.Read More
We recently discovered a new ransomware (Detected as RANSOM_BLACKHEART.THDBCAH), which drops and executes the legitimate tool known as AnyDesk alongside its malicious payload.Read More