Categories: Worm

Worm.Win32.Vobfus.efsv malicious file

The Worm.Win32.Vobfus.efsv 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.efsv 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
  • Authenticode signature is invalid
  • Behavioural detection: Injection (inter-process)
  • CAPE detected the embedded pe malware family
  • Anomalous binary characteristics
  • 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.efsv?


File Info:

name: 44E4A797FD7C60C91F1D.mlwpath: /opt/CAPEv2/storage/binaries/7079411d9c51fd84cd73b4238900f7e830fd8c8e93142b8da09fb09f142eff90crc32: 003B75C6md5: 44e4a797fd7c60c91f1d665e1c706490sha1: d3dc423531ef17007d2e28a9715aeb2c712afec1sha256: 7079411d9c51fd84cd73b4238900f7e830fd8c8e93142b8da09fb09f142eff90sha512: b2d1de593b2c5ea269342894f54868f75f4e0ac6ff591d8f8528cd9cfe758ce1783ea65414bb365b6b37f353aefeb01a0e2006b8276470251ef12a3415794bddssdeep: 3072:A0O27Wj5h3QKWXXWXG8FF7K+AmsgE5kEZZZy6x8WNE5j4oQc:DWjX3QKKXWFFF7KlgaStdtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1F3F3832676C0F67DC515C6F8392E8390A436ED3565E2AC03F6C26F26B6B6D67D220307sha3_384: ef983664d26869de9fa1c1f367a4066b53df32c604b79f2d7c4ed78ca2c352bb51522986a3b7f24453696ceefcc0ac67ep_bytes: 68cc404000e8f0ffffff000000000000timestamp: 2011-10-03 15:13:14

Version Info:

Translation: 0x0409 0x04b0ProductName: fhNnqRjrnbnyMSFileVersion: 1.00ProductVersion: 1.00InternalName: JmYWebFBNMweSXnpAJOriginalFilename: JmYWebFBNMweSXnpAJ.exe

Worm.Win32.Vobfus.efsv also known as:

Bkav W32.AIDetectMalware
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.VBKrypt.23
ClamAV Win.Trojan.VB-1545
FireEye Generic.mg.44e4a797fd7c60c9
CAT-QuickHeal Trojan.Vobfus.gen
Skyhigh BehavesLike.Win32.VBObfus.cm
McAfee VBObfus.bc
Malwarebytes Generic.Malware.AI.DDS
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus EmailWorm ( 0054d10f1 )
K7GW EmailWorm ( 0054d10f1 )
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta AI:Packer.C33BF22B20
VirIT Worm.Win32.Generic.BAEZ
Symantec W32.Changeup
ESET-NOD32 Win32/AutoRun.VB.AMX
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Worm.Win32.Vobfus.efsv
BitDefender Gen:Variant.VBKrypt.23
NANO-Antivirus Trojan.Win32.VB.rilrb
SUPERAntiSpyware Trojan.Agent/Gen-Vobfus
Avast Win32:VB-ABDC [Drp]
TACHYON Trojan/W32.VB-Diple.159744
Emsisoft Gen:Variant.VBKrypt.23 (B)
Baidu Win32.Trojan.Inject.n
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.VbCrypt.60
VIPRE Gen:Variant.VBKrypt.23
TrendMicro WORM_VOBFUS.SMHE
Trapmine malicious.high.ml.score
Sophos Mal/VB-XV
Ikarus Worm.Win32.Vobfus
GData Gen:Variant.VBKrypt.23
Varist W32/Vobfus.Z.gen!Eldorado
Avira TR/Dropper.Gen
Antiy-AVL Worm/Win32.WBNA.gen
Kingsoft malware.kb.a.1000
Xcitium TrojWare.Win32.Diple.EMIB@4pez3w
Arcabit Trojan.VBKrypt.23
ZoneAlarm Worm.Win32.Vobfus.efsv
Microsoft Worm:Win32/Vobfus!pz
Google Detected
AhnLab-V3 Trojan/Win32.Diple.R13793
Acronis suspicious
ALYac Gen:Variant.VBKrypt.23
MAX malware (ai score=88)
VBA32 BScope.Worm.Vobfus
Cylance unsafe
Panda Trj/Genetic.gen
TrendMicro-HouseCall WORM_VOBFUS.SMHE
Rising Worm.VobfusEx!1.99DB (CLASSIC)
Yandex Trojan.GenAsa!g0BYoJ2W/qc
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/VB.CNE!worm
AVG Win32:VB-ABDC [Drp]
Cybereason malicious.531ef1
DeepInstinct MALICIOUS

How to remove Worm.Win32.Vobfus.efsv?

  • 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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Paul Valéry

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