Categories: Malware

Fragtor.31231 (B) removal tips

The Fragtor.31231 (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.

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What Fragtor.31231 (B) virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Attempts to connect to a dead IP:Port (1 unique times)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • The executable is likely packed with VMProtect
  • Authenticode signature is invalid
  • Tries to suspend Cuckoo threads to prevent logging of malicious activity
  • Tries to unhook or modify Windows functions monitored by Cuckoo

How to determine Fragtor.31231 (B)?


File Info:

name: 900A886D2960E4A25B16.mlwpath: /opt/CAPEv2/storage/binaries/8cde5a661c62a2d246b706e66d8840b13202cef80f3dcba385e15dec196de9f8crc32: 9B3DADB1md5: 900a886d2960e4a25b16858ede136314sha1: c71301fda47d483df52644faf7c752496214a1e6sha256: 8cde5a661c62a2d246b706e66d8840b13202cef80f3dcba385e15dec196de9f8sha512: 1d09ec25e7749b5acc1ce2e5bc0a2496ed1927982457921be6fcfd53e2f3144dc9033146283e966f6b696c119f2d7d5939851d421dd4a68344ab93f8e8195f11ssdeep: 196608:u7fbC+ipwF/U7Hm+WvUH3nCbo12ndjtLN+jbmdjIlCgUc:u7fbC+SwF/U7HyUH3F1IdBLIHmdj6H7type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1E99633635269018EC0E5DD3E85277DE030F35766AF41BC346AEA9FC12C638EAE613C56sha3_384: 2e069e5378a34777fbf856fa6d65958d583eda99d2dc8b1d59bfd594f34bb657b8a68f407922f8db57f9e126be58609cep_bytes: 68ff39cf83e8104bfdff8b06660fb610timestamp: 2022-06-30 03:31:05

Version Info:

FileVersion: 1.0.1.0FileDescription: 武神坛ProductName: 武神坛ProductVersion: 1.0.1.0CompanyName: 武神坛LegalCopyright: 武神坛 版权所有Comments: 本程序使用易语言编写(http://www.eyuyan.com)Translation: 0x0804 0x04b0

Fragtor.31231 (B) also known as:

Bkav W32.AIDetect.malware1
tehtris Generic.Malware
MicroWorld-eScan Gen:Variant.Fragtor.31231
FireEye Generic.mg.900a886d2960e4a2
ALYac Gen:Variant.Fragtor.31231
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Adware ( 004b8e1b1 )
K7GW Adware ( 004b8e1b1 )
Cybereason malicious.da47d4
Cyren W32/FlyStudio.W.gen!Eldorado
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/FlyStudio.Packed.AO potentially unwanted
APEX Malicious
Kaspersky VHO:Packed.Win32.Convagent.gen
BitDefender Gen:Variant.Fragtor.31231
Ad-Aware Gen:Variant.Fragtor.31231
Sophos Generic ML PUA (PUA)
Comodo TrojWare.Win32.Agent.ISVQ@5mbonp
McAfee-GW-Edition BehavesLike.Win32.Generic.rc
Trapmine suspicious.low.ml.score
Emsisoft Gen:Variant.Fragtor.31231 (B)
SentinelOne Static AI – Malicious PE
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Trojan:Win32/Wacatac.B!ml
ZoneAlarm VHO:Packed.Win32.Convagent.gen
GData Win32.Application.PUPStudio.A
Cynet Malicious (score: 100)
Acronis suspicious
MAX malware (ai score=84)
Malwarebytes Malware.Heuristic.1003
Rising Trojan.Generic@AI.100 (RDML:8PDUYvteUuyqdUuJ8lbytA)
Ikarus Trojan.Win32.Krypt
MaxSecure Dropper.Dinwod.frindll
Fortinet W32/GenKryptik.DLII!tr
BitDefenderTheta Gen:NN.ZexaF.34742.@B0@a80Jzsdb

How to remove Fragtor.31231 (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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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