About “Backdoor:Win32/Qakbot!B” infection

The Backdoor:Win32/Qakbot!B 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.

What Backdoor:Win32/Qakbot!B virus can do?

• Behavioural detection: Executable code extraction – unpacking
• At least one process apparently crashed during execution
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Dynamic (imported) function loading detected
• 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

How to determine Backdoor:Win32/Qakbot!B?

File Info:
name: F858C2EB2F7C18F4C9C8.mlwpath: /opt/CAPEv2/storage/binaries/43e88533b696944b069591cd04a95582ca9ddfed026892e08fb7be28526099e3crc32: 91F58B0Amd5: f858c2eb2f7c18f4c9c80de25f577dc6sha1: e9a2a00d0377eac66443e2fe4f75d71eafddc7ffsha256: 43e88533b696944b069591cd04a95582ca9ddfed026892e08fb7be28526099e3sha512: 13ae0d97c4e151ce8d6f00ff062a0f86cdf12956a5a1735529b8a40f6956fd2f8b2aeb6a18102572e62b426fa86748f868871f6da089e90d006ce3493c566687ssdeep: 6144:OsWRnIT8Kx2Wmvlb5jPt0mIFaF0ctIZtvvkEOvP4QM:O/Rnq8KMWm9b5j1RAaDtIZtvkCQMtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19244236674179DF8D783A731211F4F99F043B736AA5E4DF2CA7E12BEE8314205101ABAsha3_384: 3437902b95583e3168a982dfcf84e374e3e091259143ecd32a69668c7c2d7c6b18c22281136163c758c745d1fd4f120bep_bytes: 60be153072008dbeebdfcdff5783cdfftimestamp: 2007-03-01 16:06:28
Version Info:
CompanyName: Xrfuvif AsvwnhmfyFileDescription: Xrfuvif Ibxiwoqwvo QcetdpgFileVersion: 21, 28, 9, 47InternalName: XrfuvifLegalCopyright: Copyright © Xrfuvif Asvwnhmfy 1999-2008OriginalFilename: Xrfuvif.exeProductName: Xrfuvif Ibxiwoqwvo QcetdpgProductVersion: 107, 96, 104, 36Translation: 0x0409 0x04e4

Backdoor:Win32/Qakbot!B also known as:

How to remove Backdoor:Win32/Qakbot!B?

• 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.