Categories: RansomTrojan

VHO:Trojan-Ransom.Win32.Agent (file analysis)

The VHO:Trojan-Ransom.Win32.Agent 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 VHO:Trojan-Ransom.Win32.Agent virus can do?

  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Creates an autorun.inf file
  • Uses Windows utilities for basic functionality
  • Attempts to delete volume shadow copies
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Modifies boot configuration settings
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Clears Windows events or logs
  • Creates a copy of itself
  • Attempts to disable UAC
  • Attempts to modify UAC prompt behavior
  • Uses suspicious command line tools or Windows utilities

How to determine VHO:Trojan-Ransom.Win32.Agent?


File Info:

crc32: 71082517md5: 64dfcd3e16b8c14448abd33f375e729fname: 64DFCD3E16B8C14448ABD33F375E729F.mlwsha1: 30b60f11ffb66361cad7b44996e2a4e8673f35fasha256: b83e430f6f40dc470096516a1780dc87e707a7cb3db07533ea672fdaf2a3ebf5sha512: c3fcaaa55f599c7b1d4b2b30b33cae20db2319c0ce157ef4556a2996641278f4868f6220e254f80975f57eb0352f396e86973d0c6a4ce29f7bee1ed8d0195689ssdeep: 6144:k0pJQOVwfYwXpcz8EPe+TyPseYLk8F/+Nj5Up:kAVifYwXpcne+ReYLdo9Uptype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.InternalName: taskhost.exeFileVersion: 10.0.17763.831 (WinBuild.160101.0800)CompanyName: Microsoft CorporationProductName: Microsoftxae Windowsxae Operating SystemProductVersion: 10.0.17763.831FileDescription: Host Process for Windows TasksOriginalFilename: taskhost.exeTranslation: 0x0409 0x04b0

VHO:Trojan-Ransom.Win32.Agent also known as:

Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 00577dec1 )
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop16.12853
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ransom.Avaddon.3
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_70% (D)
K7GW Trojan ( 00577dec1 )
Cybereason malicious.e16b8c
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.Avaddon.C
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Avaddon-9852658-0
Kaspersky VHO:Trojan-Ransom.Win32.Agent.gen
BitDefender Gen:Variant.Ransom.Avaddon.3
MicroWorld-eScan Gen:Variant.Ransom.Avaddon.3
Ad-Aware Gen:Variant.Ransom.Avaddon.3
Sophos Troj/Avaddon-A
BitDefenderTheta Gen:NN.ZexaF.34690.qmKfam2btfoi
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.64dfcd3e16b8c144
Emsisoft Gen:Variant.Ransom.Avaddon.3 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.DelShad.bhg
Avira TR/Crypt.FKM.Gen
eGambit Unsafe.AI_Score_100%
Microsoft Program:Win32/Wacapew.C!ml
Arcabit Trojan.Ransom.Avaddon.3
GData Gen:Variant.Ransom.Avaddon.3
AhnLab-V3 Ransomware/Win.Avaddon.C4481527
MAX malware (ai score=88)
VBA32 Trojan.DelShad
Panda Trj/GdSda.A
Rising Malware.Heuristic!ET#87% (RDMK:cmRtazp+XeZr4BqIcml4cO4VQDvb)
Yandex Trojan.DelShad!9+W8qxhoK3A
Ikarus Trojan-Ransom.Avaddon
Fortinet W32/Avaddon.C!tr.ransom
AVG Win32:Trojan-gen

How to remove VHO:Trojan-Ransom.Win32.Agent?

  • 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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