Worm

Worm.Win32.Vobfus.efnr (file analysis)

Malware Removal

The Worm.Win32.Vobfus.efnr 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 Worm.Win32.Vobfus.efnr 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)
  • 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 Worm.Win32.Vobfus.efnr?


File Info:

name: BB73B7A3768F5CC1811F.mlw
path: /opt/CAPEv2/storage/binaries/1cb497d136dd710f988cf27c9cab357fd1c04f24efc61d86d6bd4ead1dbc7edb
crc32: 74861449
md5: bb73b7a3768f5cc1811ff8e9b6a543f5
sha1: b8ff8521ffd71abba6fcceb4697d8a0835047b43
sha256: 1cb497d136dd710f988cf27c9cab357fd1c04f24efc61d86d6bd4ead1dbc7edb
sha512: fdac3c4c64810447f8f5d693b49476ca1ced9b22fe212d949e516d0e5196ce65e92c4319676f179514abb2fa01a062f4fb5367bb1109cda29fbc00bab2190ee7
ssdeep: 6144:ZFUbmAUqrtodM0M5MYGmqgKnvmb7/D26rpOaX8RQFsjw+tJAwOCuAUT:AbmAU0YM0M5MaqgKnvmb7/D26dX8RQFL
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1774484136A00B42FF69684F01A2CA65B7C2A1D7A1394BC43B2C17F5925B1A9BF4F435F
sha3_384: 0d3d30a9c9b58d4e9f257c669575bc6bd4df4a8400a5cc6dd080407b4f95eaf0c9d61ebc2bc996e013038ffddb197b19
ep_bytes: 68603d4000e8eeffffff000000000000
timestamp: 1998-05-14 21:48:28

Version Info:

0: [No Data]

Worm.Win32.Vobfus.efnr also known as:

BkavW32.AIDetectMalware
Elasticmalicious (high confidence)
MicroWorld-eScanGen:Variant.Barys.2263
FireEyeGeneric.mg.bb73b7a3768f5cc1
SkyhighBehavesLike.Win32.Generic.dm
McAfeeVBObfus.bu
MalwarebytesGeneric.Malware.AI.DDS
VIPREGen:Variant.Barys.2263
SangforSuspicious.Win32.Save.vb
K7AntiVirusEmailWorm ( 0054d10f1 )
K7GWEmailWorm ( 0054d10f1 )
CrowdStrikewin/malicious_confidence_100% (D)
BaiduWin32.Worm.Autorun.l
VirITTrojan.Win32.Diple.CNLQ
SymantecW32.Changeup
tehtrisGeneric.Malware
ESET-NOD32a variant of Win32/AutoRun.VB.AMW
APEXMalicious
TrendMicro-HouseCallWORM_VOBFUS.SMAB
ClamAVWin.Trojan.Changeup-6169544-0
KasperskyWorm.Win32.Vobfus.efnr
BitDefenderGen:Variant.Barys.2263
NANO-AntivirusTrojan.Win32.WBNA.cqkydw
TencentWorm.Win32.Vobfus.n
EmsisoftGen:Variant.Barys.2263 (B)
F-SecureTrojan.TR/VB.Inject.112564
DrWebTrojan.VbCrypt.60
TrendMicroWORM_VOBFUS.SMAB
Trapminemalicious.moderate.ml.score
SophosW32/SillyFDC-GH
SentinelOneStatic AI – Malicious PE
MAXmalware (ai score=89)
GoogleDetected
AviraTR/VB.Inject.112564
VaristW32/Vobfus.AA.gen!Eldorado
Antiy-AVLVirus/Win64.Expiro.rsrc
MicrosoftWorm:Win32/Vobfus!pz
XcitiumWorm.Win32.Pronny.AK@4ogvoo
ArcabitTrojan.Barys.D8D7
ZoneAlarmWorm.Win32.Vobfus.efnr
GDataGen:Variant.Barys.2263
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Diple.R15226
Acronissuspicious
BitDefenderThetaGen:NN.ZevbaF.36802.pqW@aivYlDmi
DeepInstinctMALICIOUS
VBA32BScope.Trojan.Diple
Cylanceunsafe
PandaW32/Vobfus.GEW.worm
RisingWorm.VobfusEx!1.99DB (CLASSIC)
YandexTrojan.GenAsa!l+8jqIxUMw8
IkarusWorm.Win32.Vobfus
MaxSecureTrojan.Diple.cnlq
FortinetW32/VB.ADV!tr
AVGWin32:Virtu-F [Inf]
Cybereasonmalicious.3768f5
AvastWin32:Virtu-F [Inf]
alibabacloudWorm:Win/Vobfus.4a141f97

How to remove Worm.Win32.Vobfus.efnr?

Worm.Win32.Vobfus.efnr 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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