Trojan horse Generic_r.CIW
Threat Scorecard
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| Ranking: | 3,778 |
| Threat Level: | 20 % (Normal) |
| Infected Computers: | 8,670 |
| First Seen: | June 13, 2013 |
| Last Seen: | September 19, 2023 |
| OS(es) Affected: | Windows |
Trojan horse Generic_r.CIW is a Trojan that is distributed via bogus MMS spam emails dispersing Zeus bot . now in Czech Republic. The unsolicited email masquerades as an MMS sent through any one of the local mobile operators such as T-Mobile. The attached archive encompasses an infectedexecutable file with double extension imitating a JPG image, for example, 'MMS img 76897644.jpeg.exe'. The infected file, which is found as Trojan horse Generic_r.CIW, is a Zeus bot downloader, which involves its C&C server and downloads other damaging files. Once Trojan horse Generic_r.CIW is run, the first encryption layer is decrypted and several checks to detect controlled environment are performed. If all these tests are successfully passed and no virtual environment or debugger is found, Trojan horse Generic_r.CIW then modifies its flow by registering FileIOCompletionRoutine callback function. Trojan horse Generic_r.CIW strives to embed a code and encrypted data into the 'explorer.exe' process. One of two available injection techniques is then selected, which is based on the version of Windows (32-bit/64-bit) sample is running on.
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