Categories: Malware

Bulz.523878 (B) malicious file

The Bulz.523878 (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 Bulz.523878 (B) virus can do?

  • Executable code extraction
  • Compression (or decompression)
  • Attempts to connect to a dead IP:Port (1 unique times)
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Drops a binary and executes it
  • Unconventionial language used in binary resources: Spanish (Peru)
  • The binary likely contains encrypted or compressed data.
  • Collects information about installed applications
  • Creates a hidden or system file
  • Checks the CPU name from registry, possibly for anti-virtualization
  • Creates a copy of itself
  • Collects information to fingerprint the system
  • Anomalous binary characteristics

How to determine Bulz.523878 (B)?


File Info:

crc32: 5682EA28md5: dfde72c9dcc318caad3e880ec186f010name: DFDE72C9DCC318CAAD3E880EC186F010.mlwsha1: 642beb25cbc0ef367f87884e5bf8d77860279dcdsha256: aa6206082575919b3b0ea11c5430082a8b6b2251ca4d4aeedfe663ca250fdafbsha512: f9b4df25efe3eb1b3ff633b61752044dd1c3fdfcf9cc50cae2de8314e361d7c11ce7b611604533c2ebff697679058cac9d81289ab19987f1ce840e7951bcf16cssdeep: 24576:5Brc+UQvc8QIFYtTpIzlLjSdKYz2YFmB7ADfOiIHku9:E+v38TpsRjS7zdW7ADfJIHHtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translations: 0x48b6 0x0359

Bulz.523878 (B) also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Gen:Variant.Bulz.523878
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
K7GW Riskware ( 0040eff71 )
APEX Malicious
Avast Win32:MdeClass
Kaspersky VHO:Trojan.Win32.Yakes.gen
BitDefender Gen:Variant.Bulz.523878
MicroWorld-eScan Gen:Variant.Bulz.523878
Ad-Aware Gen:Variant.Bulz.523878
Sophos ML/PE-A + Troj/Kryptik-TR
BitDefenderTheta Gen:NN.ZexaF.34758.gz0@aiLIvxIc
McAfee-GW-Edition BehavesLike.Win32.Lockbit.tc
FireEye Generic.mg.dfde72c9dcc318ca
Emsisoft Gen:Variant.Bulz.523878 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Zenpak.hpk
Microsoft Trojan:Win32/Azorult!ml
GData Gen:Variant.Bulz.523878
Acronis suspicious
MAX malware (ai score=88)
VBA32 BScope.Trojan.Crypt
Malwarebytes MachineLearning/Anomalous.95%
Rising Malware.Heuristic!ET#76% (RDMK:cmRtazq0V0DkMc2OVO24BySJg9eP)
Ikarus Trojan.Win32.Ranumbot
MaxSecure Trojan.Malware.300983.susgen
AVG Win32:MdeClass

How to remove Bulz.523878 (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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