Trojan:Win32/Sefnit.Q removal guide

The Trojan:Win32/Sefnit.Q 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.Q virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Dynamic (imported) function loading detected
• Enumerates running processes
• CAPE extracted potentially suspicious content
• Unconventionial language used in binary resources: Russian
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Authenticode signature is invalid
• Created a process from a suspicious location

How to determine Trojan:Win32/Sefnit.Q?

File Info:
name: 8F57CC38507EE44D7253.mlw
path: /opt/CAPEv2/storage/binaries/b8a8ade9da08bbb042a2a1cd01e8ab173257eb9f1f82830d77681db46458d141
crc32: DDD4C179
md5: 8f57cc38507ee44d72536cd3db2f7e3d
sha1: 66cb8b5ef3e5c771936bd55f09d631c967d6e4cd
sha256: b8a8ade9da08bbb042a2a1cd01e8ab173257eb9f1f82830d77681db46458d141
sha512: 5bca48e4923c345ac9b17ca65e9cbad20d5e08bb2a1b98e14dcfa91959a06ec3a46280e97025d7f72e9198a78ba341dc09f93516cc1449860d8ca7361ac705b2
ssdeep: 196608:ILfO8ALKcKjzrYQ68nNc6VlMfmVjSc63yayhgrcTDkaDmT8E/GsZf4PCZJLcRlC:if7LcKjnYQRnNJVlMfmV6cfkbYIjN4kX
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T150A633AA53A03E18C10A597B2C91C7D9887CAD4267602CD5F853DF2049774BEC6F4AEF
sha3_384: af9b5652a4f146be212ea0254bcd88b0fee1f6d94cf1501137a8f9bb92bd549278b51ebd76cbbf8573cb94d8e5193e3e
ep_bytes: 60be15c075008dbeeb4fcaff57eb0b90
timestamp: 2009-02-18 05:39:53

Version Info:
CompanyName: Vrnjqyudtk Qajgudhu
FileDescription: Vrnjqyudtk Ufstxfwn Rpsinxtj
FileVersion: 127, 79, 16, 45
InternalName: Vrnjqyudtk
LegalCopyright: Copyright © Vrnjqyudtk Qajgudhu 1997-2010
OriginalFilename: Vrnjqyudtk.exe
ProductName: Vrnjqyudtk Ufstxfwn Rpsinxtj
ProductVersion: 62, 123, 113, 87
Translation: 0x0409 0x04e4

Trojan:Win32/Sefnit.Q also known as:

How to remove Trojan:Win32/Sefnit.Q?

• 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.