Worm

Worm:Win32/Vobfus.YC information

Malware Removal

The Worm:Win32/Vobfus.YC 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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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 Worm:Win32/Vobfus.YC 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 likely contains encrypted or compressed data.
  • Creates an autorun.inf file
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Behavioural detection: Injection (inter-process)
  • Creates a copy of itself
  • Attempts to disable Windows Auto Updates
  • 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 Worm:Win32/Vobfus.YC?


File Info:

name: 355CB9C5166964BD7C25.mlw
path: /opt/CAPEv2/storage/binaries/8f73271f256d2dfa2572843465724c523504cd8ba303681d5421253982894f1a
crc32: D336F3A1
md5: 355cb9c5166964bd7c2515538a901b81
sha1: eeb852c31e34c8022409eac26872ed1f03e8bca1
sha256: 8f73271f256d2dfa2572843465724c523504cd8ba303681d5421253982894f1a
sha512: 4e93be2663646b76eb33af0879621782697686df4426591cc3139b72552677ef85928da98654e6fe5e0e5309dd9dc19f6cb2307b0c96538f1f3d50567549fcfb
ssdeep: 3072:V+M9IsqkRR0tLqX0sBaqLZIMgES0gDqaqAj3iA:DbcLqTl1jSZDqK3x
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T137B39E5AFE875027D0152E3286D583E49FBDBC433E87266FEB1432693C62E085994DB3
sha3_384: 0da879c01616ab2249b2923f5e904d2b8dfef1b34c81fdb2ea3b88102ef7ed04957d4d00212e2be6d64b68b49ef9d8e0
ep_bytes: 68ac104000e8eeffffff000000000000
timestamp: 2014-06-04 13:10:47

Version Info:

Translation: 0x0409 0x04b0

Worm:Win32/Vobfus.YC also known as:

BkavW32.AIDetectMalware
LionicWorm.Win32.Vobfus.lKG2
tehtrisGeneric.Malware
MicroWorld-eScanGen:Variant.Symmi.9442
FireEyeGeneric.mg.355cb9c5166964bd
CAT-QuickHealTrojan.Beebone.D
SkyhighBehavesLike.Win32.VBObfus.cc
ALYacGen:Variant.Symmi.9442
MalwarebytesMalware.AI.800385697
ZillyaTrojan.VBKrypt.Win32.230436
SangforSuspicious.Win32.Save.vb
K7AntiVirusTrojan ( 0040f7f31 )
BitDefenderGen:Variant.Symmi.9442
K7GWTrojan ( 0040f7f31 )
Cybereasonmalicious.31e34c
BaiduWin32.Trojan.Inject.af
SymantecW32.Changeup!gen44
Elasticmalicious (high confidence)
ESET-NOD32a variant of Win32/Injector.AZJD
APEXMalicious
KasperskyTrojan.Win32.VBKrypt.upsg
AlibabaWorm:Win32/VBKrypt.5e9f6b0c
NANO-AntivirusTrojan.Win32.VBKrypt.cwzxla
RisingWorm.Vobfus!8.10E (TFE:3:Az1HDBtPlWG)
EmsisoftGen:Variant.Symmi.9442 (B)
F-SecureTrojan.TR/Dropper.Gen
DrWebWin32.HLLW.Autoruner2.10348
VIPREGen:Variant.Symmi.9442
TrendMicroTROJ_GEN.R002C0CJS23
Trapminemalicious.high.ml.score
SophosMal/SillyFDC-AH
IkarusWorm.Win32.Vobfus
MAXmalware (ai score=100)
JiangminTrojan/VBKrypt.hyxp
WebrootW32.Malware.gen
GoogleDetected
AviraTR/Dropper.Gen
VaristW32/Vobfus.PK.gen!Eldorado
Antiy-AVLTrojan/Win32.VBKrypt
Kingsoftmalware.kb.a.997
MicrosoftWorm:Win32/Vobfus.YC
XcitiumTrojWare.Win32.VB.ICOU@58gw6x
ArcabitTrojan.Symmi.D24E2
ZoneAlarmTrojan.Win32.VBKrypt.upsg
GDataGen:Variant.Symmi.9442
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Vobfus.C265149
BitDefenderThetaAI:Packer.9096621620
TACHYONTrojan/W32.VB-VBKrypt.114688.AT
DeepInstinctMALICIOUS
VBA32TScope.Trojan.VB
Cylanceunsafe
PandaTrj/Genetic.gen
TrendMicro-HouseCallTROJ_GEN.R002C0CJS23
TencentWin32.Trojan.Vbkrypt.Ydkl
YandexTrojan.VBKrypt!BzDSNeOoFoE
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.6976350.susgen
FortinetW32/Injector.VOX!tr
AVGWin32:VB-AHUE [Trj]
AvastWin32:VB-AHUE [Trj]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Worm:Win32/Vobfus.YC?

Worm:Win32/Vobfus.YC 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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