Categories: Malware

Troj/VB-FSK (file analysis)

The Troj/VB-FSK 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 Troj/VB-FSK virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Behavioural detection: Injection (inter-process)
  • CAPE detected the embedded pe malware family
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Troj/VB-FSK?


File Info:

name: DD169A09542ADE501A7A.mlwpath: /opt/CAPEv2/storage/binaries/500f1d7168b42001c2b1356a366677bb1ec1165e91a88939c86e92662e474b50crc32: E35427E2md5: dd169a09542ade501a7a0f8ad1cc221asha1: 792c059323f503fbb53bee024485c6b905bdbd9bsha256: 500f1d7168b42001c2b1356a366677bb1ec1165e91a88939c86e92662e474b50sha512: 11b45cbe63c7a1c4ec368114e74422861518caec3858d478ba1939369d15844cc70bcb94520bd4acf261bf3707db4b165b71ad19185e6867da2d40589d486293ssdeep: 6144:nfXim9AN+tytpx96Hg02BCh3FZuhbYaxUG2nIVeUuto:nfXiAfyDxsHg02BCh3FZuhbYaxUG2npQtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T16354E7297390FB3AE065C1F13A5A83A4553EED7624A4A807F7D22F2A73B0D57D061723sha3_384: 9d24d393b1959af6e4967168f292b9635b9fdb8c8c16438476b66590d7bcf7961c6f01db412042884a3155b8fae67119ep_bytes: 68ac434000e8f0ffffff000040000000timestamp: 2012-01-04 19:14:12

Version Info:

0: [No Data]

Troj/VB-FSK also known as:

Bkav W32.AIDetectMalware
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ser.Zusy.4173
FireEye Generic.mg.dd169a09542ade50
CAT-QuickHeal Trojan.Beebone.D
Skyhigh BehavesLike.Win32.VBObfus.dm
McAfee VBObfus.eq
Malwarebytes Generic.Worm.AutoRun.DDS
VIPRE Gen:Variant.Ser.Zusy.4173
Sangfor Suspicious.Win32.Save.vb
CrowdStrike win/malicious_confidence_100% (D)
K7GW EmailWorm ( 0054d10f1 )
K7AntiVirus EmailWorm ( 0054d10f1 )
Baidu Win32.Worm.Pronny.d
VirIT Trojan.Win32.Zyx.HC
Symantec W32.Changeup!gen15
ESET-NOD32 Win32/AutoRun.VB.AQE
APEX Malicious
ClamAV Win.Trojan.Vobfus-70360
Kaspersky Worm.Win32.Vobfus.dfhy
BitDefender Gen:Variant.Ser.Zusy.4173
NANO-Antivirus Trojan.Win32.VB.chvyxv
Avast Win32:AutoRun-CMJ [Trj]
Tencent Worm.Win32.Vobfus.kay
Emsisoft Gen:Variant.Ser.Zusy.4173 (B)
F-Secure Trojan.TR/Jorik.Vobfus.klo
DrWeb Trojan.VbCrypt.150
TrendMicro TROJ_AGENT_006413.TOMB
Trapmine malicious.moderate.ml.score
Sophos Troj/VB-FSK
Ikarus Sality.Win32
Google Detected
Avira TR/Jorik.Vobfus.klo
Varist W32/Vobfus.AI.gen!Eldorado
Antiy-AVL Worm/Win32.WBNA.gen
Microsoft Worm:Win32/Vobfus.gen!P
Xcitium Worm.Win32.Vobfus.MJ@8ekc4q
Arcabit Trojan.Ser.Zusy.D104D
ViRobot Worm.Win32.A.WBNA.294912.S
ZoneAlarm Worm.Win32.Vobfus.dfhy
GData Gen:Variant.Ser.Zusy.4173
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Menti.R36357
Acronis suspicious
BitDefenderTheta AI:Packer.2C00F6471E
ALYac Gen:Variant.Ser.Zusy.4173
MAX malware (ai score=83)
VBA32 BScope.Trojan.Diple
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_AGENT_006413.TOMB
Rising Worm.Pronoy!1.9A2F (CLASSIC)
SentinelOne Static AI – Malicious PE
Fortinet W32/Diple.EJQE!tr
AVG Win32:AutoRun-CMJ [Trj]
DeepInstinct MALICIOUS

How to remove Troj/VB-FSK?

  • 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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