Categories: Trojan

About “Trojan.Varydrop.2921” infection

The Trojan.Varydrop.2921 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 Trojan.Varydrop.2921 virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Behavioural detection: Injection (inter-process)
  • Anomalous binary characteristics
  • Attempts to modify Explorer settings to prevent hidden files from being displayed
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Trojan.Varydrop.2921?


File Info:

name: 55C09F48387DD5AB0866.mlwpath: /opt/CAPEv2/storage/binaries/16f501eb9cf08600e5ab4cf26628fba2a7862a64e4b9a0ab3369cb90818689becrc32: A8849409md5: 55c09f48387dd5ab0866cc4e414b1148sha1: 9ba9ea8f6c4ac5ecfbfc11348a417e5ccdfa72b1sha256: 16f501eb9cf08600e5ab4cf26628fba2a7862a64e4b9a0ab3369cb90818689besha512: 116606643b4855d69ee70f6f584a21a3e7d9992cd24064af4256088502efd6c638671b2abee513ec25589893caadc8f6564c1d19ee5442e44039179ed0c9373cssdeep: 6144:wvkhE4XMEMoZFOJaa82i2QIJ/UXEsH+3A06swOJRnCm5UjSQB:wvk98zo2gabhQoUX/e3EsPJRgjdtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1C2341FD4A380E97BE4B19FFAA785035300945DB859C57233B3C19B1A377A8E682707E7sha3_384: 27e43426de92803779e92271fb7f83dcb6f7a1755d7451b3e3e85c174109e808c6554460f663d138602ad355e60eac97ep_bytes: 68bc3e4000e8eeffffff000000000000timestamp: 2011-03-05 05:22:59

Version Info:

Translation: 0x0409 0x04b0ProductName: IYsdCIuUBssSudEkNWOUDXsXIukmFileVersion: 3.76ProductVersion: 3.76InternalName: WXWPbSDOriginalFilename: WXWPbSD.exe

Trojan.Varydrop.2921 also known as:

DrWeb Trojan.VbCrypt.60
MicroWorld-eScan Gen:Variant.Symmi.86696
ClamAV Win.Trojan.Changeup-6169544-0
FireEye Generic.mg.55c09f48387dd5ab
CAT-QuickHeal Worm.VobfusVMF.S20640996
McAfee Downloader-CJX.gen.v
Malwarebytes Generic.Malware.AI.DDS
VIPRE Gen:Variant.Symmi.86696
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus NetWorm ( 700000151 )
K7GW NetWorm ( 700000151 )
Cybereason malicious.8387dd
BitDefenderTheta AI:Packer.D97D5C5D21
VirIT Trojan.Win32.Heur.BQWM
Cyren W32/Vobfus.P.gen!Eldorado
Symantec W32.Changeup
Elastic malicious (high confidence)
ESET-NOD32 Win32/AutoRun.VB.ACA
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.WBNA.sq
BitDefender Gen:Variant.Symmi.86696
NANO-Antivirus Trojan.Win32.WBNA.cnwqxh
SUPERAntiSpyware Trojan.Agent/Gen-ZBot
Avast Win32:VB-RSN [Wrm]
TACHYON Trojan/W32.VB-VBKrypt.233472.G
Emsisoft Gen:Variant.Symmi.86696 (B)
F-Secure Trojan.TR/Kazy.14392.18
Baidu Win32.Worm.VB.tn
TrendMicro WORM_VOBFUS.SMHC
McAfee-GW-Edition BehavesLike.Win32.VBObfus.dm
Sophos Mal/SillyFDC-M
SentinelOne Static AI – Malicious PE
GData Gen:Variant.Symmi.86696
Avira TR/Kazy.14392.18
Antiy-AVL Worm/Win32.WBNA.gen
Arcabit Trojan.Symmi.D152A8
ViRobot Worm.Win32.A.WBNA.233472.A
ZoneAlarm Worm.Win32.WBNA.sq
Microsoft Worm:Win32/Vobfus.BM
Google Detected
AhnLab-V3 Trojan/Win32.VBKrypt.R3426
VBA32 Trojan.Varydrop.2921
ALYac Gen:Variant.Symmi.86696
MAX malware (ai score=81)
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall WORM_VOBFUS.SMHC
Rising Worm.Autorun!8.50 (TFE:3:3QRHIFWg9mD)
Ikarus Trojan.Win32.Genome
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/VB.ACA!tr
AVG Win32:VB-RSN [Wrm]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan.Varydrop.2921?

  • 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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