Categories: Malware

How to remove “Win32/Kryptik.BBZ”?

The Win32/Kryptik.BBZ 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 Win32/Kryptik.BBZ virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary contains an unknown PE section name indicative of packing
  • The executable is compressed using UPX
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities for basic functionality
  • Enumerates services, possibly for anti-virtualization
  • Deletes its original binary from disk
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Installs itself for autorun at Windows startup
  • Installs itself for autorun at Windows startup
  • CAPE detected the Tofsee malware family
  • Uses suspicious command line tools or Windows utilities

How to determine Win32/Kryptik.BBZ?


File Info:

name: 592063353FF2F4396857.mlwpath: /opt/CAPEv2/storage/binaries/e306f5f475ebc630f33724cad572e7fc8f34fca072c3117baf28db7305ad3791crc32: 9F1FD31Bmd5: 592063353ff2f4396857c599e9f4e276sha1: 36451e74eea1582f2e89e12e77be7606b0eb5020sha256: e306f5f475ebc630f33724cad572e7fc8f34fca072c3117baf28db7305ad3791sha512: 643497d20e505bdbdd554c344eba72c9602eb68d5ab94b8923e28ca93d315459820c450614cb4641454975d2a63e97bdbaad16350258b97780bbc3a72735bd56ssdeep: 1536:B+evTXfKSEm8QDthu9k99q6AXnn21nTGEaJVTgY3aO2+1n+Ejo9BcP0uG/jombze:1TfUjn2SDve+1Xo9BO0No2zpiptype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T182F66A6B43811C82E61F233169AB0F9FB7FAD2105367976B5744A23E2D96FC83D83125sha3_384: 1e08a5c52f409abc71f60812fe21ced85a3f8fc06d5eb4f8eccd07523b2d111856dc24382ae671e36ce91ee61caa2c17ep_bytes: 60be152041008dbeebeffeff57eb0b90timestamp: 2017-05-09 05:09:20

Version Info:

0: [No Data]

Win32/Kryptik.BBZ also known as:

Bkav W32.AIDetect.malware1
tehtris Generic.Malware
MicroWorld-eScan Trojan.GenericKDZ.40568
FireEye Generic.mg.592063353ff2f439
Cylance Unsafe
Sangfor Suspicious.Win32.Save.a
Cybereason malicious.53ff2f
BitDefenderTheta Gen:NN.ZexaF.34712.@pGfaGqDC9l
Symantec Ransom.Cerber
Elastic malicious (moderate confidence)
ESET-NOD32 a variant of Win32/Kryptik.BBZ
ClamAV Win.Malware.Locky-7090183-0
BitDefender Trojan.GenericKDZ.40568
NANO-Antivirus Trojan.Win32.Kryptik.esztuz
Avast Win32:Malware-gen
Ad-Aware Trojan.GenericKDZ.40568
Emsisoft Trojan.GenericKDZ.40568 (B)
Comodo TrojWare.Win32.Tofsee.BJ@79g6sc
Zillya Backdoor.Tofsee.Win32.2550
SentinelOne Static AI – Malicious PE
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/HckPk-G
APEX Malicious
GData Trojan.GenericKDZ.40568
Jiangmin Trojan.Tofsee.bm
Avira TR/Crypt.ULPM.Gen
Microsoft Trojan:Win32/Wacatac.B!ml
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/RansomCrypt.Exp
VBA32 Trojan.FakeAV.01657
ALYac Trojan.GenericKDZ.40568
Malwarebytes Malware.Heuristic.1003
Rising Trojan.Kryptik!1.AE8C (TFE:dGZlOgU9t1XrU6SrdA)
Ikarus Trojan-Ransom.Locky
Fortinet W32/Kryptik.GKVH!tr
AVG Win32:Malware-gen
CrowdStrike win/malicious_confidence_70% (D)

How to remove Win32/Kryptik.BBZ?

  • 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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