Trojan

How to remove “TrojanDownloader:Win32/Vundo.J”?

Malware Removal

The TrojanDownloader:Win32/Vundo.J 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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Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What TrojanDownloader:Win32/Vundo.J virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Anomalous file deletion behavior detected (10+)
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Russian
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Installs itself for autorun at Windows startup
  • Collects information to fingerprint the system
  • Anomalous binary characteristics
  • Clears web history

How to determine TrojanDownloader:Win32/Vundo.J?


File Info:

name: BBDC9354343CDC9DF4D8.mlw
path: /opt/CAPEv2/storage/binaries/f063416988affc70f38e9400e22a945b3314482b698af255ac8cbbb3d2045960
crc32: B6A1D3B5
md5: bbdc9354343cdc9df4d8898a041d0a48
sha1: 442e21891f7300b828d5e19ac9a6e85bb250cdee
sha256: f063416988affc70f38e9400e22a945b3314482b698af255ac8cbbb3d2045960
sha512: 033eee793570e571d54758824388b84e2889a7d46b2e1185bd4cfc5c33afa619f44879e3087529b74329e19f44472b69b9cfbddcf07b94f87fd3ac03a2bba031
ssdeep: 3072:Jcli7bOci8jhSFo6Y+GlzkF2BJU5HHS7Bs+ePBUa:Jcli7bOcijoT+GuF2LU5HHGBs+eZUa
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11ED3011BBED4D9F3D321933C621FEDCAD2BDF5655BC1BB3B224094226A23A11E54B094
sha3_384: c72260aecb913b3e6e2343a3d0f4a317700955763ecedaf47a74da11c01c4cbfdf7b2fe411b7b196c053269cc88e4cbb
ep_bytes: 833d6cf4410000752d8b155df4410085
timestamp: 1992-06-19 06:00:20

Version Info:

0: [No Data]

TrojanDownloader:Win32/Vundo.J also known as:

LionicHacktool.Win32.Generic.3!c
Elasticmalicious (high confidence)
MicroWorld-eScanGen:Variant.Ser.Razy.12645
FireEyeGeneric.mg.bbdc9354343cdc9d
McAfeePWS-Zbot.gen.aey
CylanceUnsafe
ZillyaBackdoor.Cidox.Win32.915
SangforSuspicious.Win32.Save.a
K7AntiVirusTrojan ( 0040f23c1 )
AlibabaTrojanDownloader:Win32/Vundo.00e28aad
K7GWTrojan ( 0040f23c1 )
Cybereasonmalicious.4343cd
BaiduWin32.Adware.Kryptik.c
VirITTrojan.Win32.LoadMoney.IR
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.AQIN
APEXMalicious
Paloaltogeneric.ml
KasperskyHEUR:Hoax.Win32.ArchSMS.heur
BitDefenderGen:Variant.Ser.Razy.12645
NANO-AntivirusTrojan.Win32.Mayachok.behsdu
AvastWin32:Vundo-ACX [Trj]
TencentWin32.Trojan.Generic.Pjno
Ad-AwareGen:Variant.Ser.Razy.12645
TACHYONBackdoor/W32.Cidox.138752
EmsisoftGen:Variant.Ser.Razy.12645 (B)
ComodoTrojWare.Win32.Kryptik.AOKV@4sn0fa
DrWebTrojan.SMSSend.2363
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.ZBot.ch
SophosMal/Generic-R + Mal/EncPk-AEH
SentinelOneStatic AI – Malicious PE
JiangminBackdoor/Cidox.gm
WebrootW32.Malware.Gen
AviraDR/Delphi.Gen7
Antiy-AVLTrojan[Backdoor]/Win32.Cidox
MicrosoftTrojanDownloader:Win32/Vundo.J
ViRobotBackdoor.Win32.A.Cidox.138752
GDataGen:Variant.Ser.Razy.12645
CynetMalicious (score: 100)
AhnLab-V3Spyware/Win32.Zbot.R46689
Acronissuspicious
BitDefenderThetaGen:NN.ZexaF.34212.iyW@aKaFLthk
ALYacGen:Variant.Ser.Razy.12645
MAXmalware (ai score=100)
VBA32Backdoor.Cidox
MalwarebytesSpyware.ZeuS
RisingSpyware.Voltar!1.AF1D (CLOUD)
YandexTrojan.GenAsa!LjfdRabzQb8
IkarusTrojan-Downloader.Win32.Vundo
MaxSecureTrojan.Malware.1691676.susgen
FortinetW32/Zbot.EQPB!tr
AVGWin32:Vundo-ACX [Trj]
PandaGeneric Malware
CrowdStrikewin/malicious_confidence_100% (D)

How to remove TrojanDownloader:Win32/Vundo.J?

TrojanDownloader:Win32/Vundo.J removal tool
  • 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.

About the author

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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