What is “Trojan:Win32/Sefnit.V”?

The Trojan:Win32/Sefnit.V is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Trojan:Win32/Sefnit.V virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Guard pages use detected – possible anti-debugging.
• Dynamic (imported) function loading detected
• Enumerates running processes
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Behavioural detection: Injection (inter-process)
• Created a process from a suspicious location
• Explorer.exe process established HTTP connections
• Collects information about installed applications
• Detects Bochs through the presence of a registry key
• Checks the version of Bios, possibly for anti-virtualization
• Attempted to write directly to a physical drive
• Creates a copy of itself
• Collects information to fingerprint the system

Related domains:

How to determine Trojan:Win32/Sefnit.V?

File Info:
name: 8B6EDA34690740A19C05.mlw
path: /opt/CAPEv2/storage/binaries/f452dcff8b1f6ee5fb2dbaf1e9cd0191535ddbd3fdb4590407a8a620201ac064
crc32: C517DFD2
md5: 8b6eda34690740a19c05a67f6515140b
sha1: cd8a208524148d77826815431ada265684369046
sha256: f452dcff8b1f6ee5fb2dbaf1e9cd0191535ddbd3fdb4590407a8a620201ac064
sha512: 51cf391845617913e6f03a3d2b8297395fc9df40da194f84d90623bbeb7760762fc2999ea6860a7df8a311fb4f42173a052a3ccb60da89efce34ad594934cdc5
ssdeep: 24576:1493NluDqD0Dl9euSrkD0nRruvVp4ZEisWae:FtpWzd
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1D836C4593CECFCE8DCA8FC604E1421325C01A85E64DBF32E75DA95D9D3952B8A322F49
sha3_384: 606ea505d88228337c0c87d1d4ffc27cfedf3fd2775baf2977905fca1adc781a20d3c7e594890865a58031d317b93e6c
ep_bytes: e8a5670000e979feffffcccccccccccc
timestamp: 2011-09-23 16:06:46

Version Info:
0: [No Data]

Trojan:Win32/Sefnit.V also known as:

How to remove Trojan:Win32/Sefnit.V?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.