Categories: Malware

How to remove “Bulz.637531”?

The Bulz.637531 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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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Bulz.637531 virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • Authenticode signature is invalid
  • Created a process from a suspicious location
  • CAPE detected the PyInstaller malware family

How to determine Bulz.637531?


File Info:

name: 96A57994DAC844201DA0.mlwpath: /opt/CAPEv2/storage/binaries/9353cf6347377bf1194349bff4001485fac99a5cd3ee03781e81c157452dae68crc32: 8785F7EFmd5: 96a57994dac844201da03003ee2183aesha1: e7cd1448b9b33c928b25451a9f72de71b2dbc7bfsha256: 9353cf6347377bf1194349bff4001485fac99a5cd3ee03781e81c157452dae68sha512: 5f82aa92a1f15287884bc7fcb26f7b0bcf2db0444417c678e613c46f0c9da0833845ca1fefc10ea35ec58ad6d7c9c627081bdf94915e41f136b6abdf3e6cf6dessdeep: 196608:wnHdJmVsyb49UuImXz1neX38DXDQ9/tbYPvbJQlHPrO2SvMTvN8CTJ+iGydotQa1:wnHdJmVsU4izm10MDTQ9/kJQlvrJTLxGtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T131C6333FF6624462C0E3173EB9B4D4765829AD346B39296B4FC83CF668734D1E638A05sha3_384: f837f29202543d3686518e913cd758d15e62133382f965d97d0354b56aebc9711b24c723626edcc0e9288eefe636e947ep_bytes: e8a0040000e97afeffff558bec6a00fftimestamp: 2021-08-01 04:40:34

Version Info:

0: [No Data]

Bulz.637531 also known as:

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Generic.4!c
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Bulz.637531
McAfee Artemis!96A57994DAC8
Cylance Unsafe
Zillya Trojan.Disco.Win64.61
Sangfor Trojan.Win32.Generic.ky
K7AntiVirus Trojan ( 00561f361 )
BitDefender Gen:Variant.Bulz.637531
K7GW Trojan ( 00561f361 )
Cybereason malicious.4dac84
Arcabit Trojan.Bulz.D9BA5B
Cyren PYC/Filecoder.A.gen!Camelot
Symantec Ransom.Raasnet
ESET-NOD32 Python/Filecoder.DM
APEX Malicious
Paloalto generic.ml
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Almi_Filecoder.f
Rising Ransom.Agent!1.D430 (CLASSIC)
Ad-Aware Gen:Variant.Bulz.637531
Emsisoft Gen:Variant.Bulz.637531 (B)
Comodo Malware@#3ay1gal83fejv
VIPRE Gen:Variant.Bulz.637531
TrendMicro TROJ_GEN.R002C0PHL21
McAfee-GW-Edition BehavesLike.Win32.Generic.wc
FireEye Generic.mg.96a57994dac84420
Sophos Mal/Generic-S
Webroot W32.Malware.Gen
Avira TR/Ransom.bimvh
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Sabsik.FL.A!ml
GData Win32.Trojan.PSE.11JYQR4
Cynet Malicious (score: 99)
AhnLab-V3 Trojan/Win.InfoStealer.C4605050
BitDefenderTheta Gen:NN.ZexaF.34582.@xZ@aOtRAOb
ALYac Trojan.Ransom.Python
MAX malware (ai score=85)
VBA32 Trojan.Sabsik.FL
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_GEN.R002C0PHL21
Tencent Win32.Trojan.Generic.Huph
Yandex Trojan.Agent!LVBNgczB/WU
MaxSecure Trojan.Malware.7164915.susgen
Fortinet Python/Filecoder.DM!tr.ransom
AVG Multi:Filecoder-H [Trj]
Avast Multi:Filecoder-H [Trj]
CrowdStrike win/malicious_confidence_100% (W)

How to remove Bulz.637531?

  • 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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