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Worm.Win32.Vobfus.dlcn (file analysis)

Published May 3, 2024 Worm category 3 min read
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What to verify before removal

Use this report for a controlled check of Worm.Win32.Vobfus.dlcn (file analysis) when the affected machine shows suspicious processes, dropped files, or payload delivery behavior. The goal is to verify the exact file and persistence path before quarantine.

Start by comparing the local file name with 5A5CEC6EC34378636E14.mlw, then review the behavior notes for persistence entries, dropped files, unusual processes, and browser or network changes. This helps separate a matching detection from a different file that only shares a similar alert name.

Observed file
5A5CEC6EC34378636E14.mlw
  • Compare the suspicious file name with 5A5CEC6EC34378636E14.mlw.
  • Confirm the detection name matches Worm.Win32.Vobfus.dlcn (file analysis) before removing related files.
  • Review the report for persistence entries, dropped files, unusual processes, and browser or network changes so the cleanup is based on observed behavior, not only the label.
  • Run a full scan, quarantine confirmed detections, and restart before signing back in to sensitive accounts.

The Worm.Win32.Vobfus.dlcn 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.

What Worm.Win32.Vobfus.dlcn 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.dlcn?



File Info:

name: 5A5CEC6EC34378636E14.mlw
path: /opt/CAPEv2/storage/binaries/272361883768f93e5ce652f88e8b5572e7065f704e133a12b29e62ba3e727b47
crc32: 59266882
md5: 5a5cec6ec34378636e140fb36c861ae4
sha1: abceac9a7ad94cad882b0ab7e7ce46524fa0f9f8
sha256: 272361883768f93e5ce652f88e8b5572e7065f704e133a12b29e62ba3e727b47
sha512: a334a7757d81b52ced0d214eb39ce11757c17100a6d3e044a4c709772190b331f7424451154043a6273ed8cf88cbc389ad30381a519f05ff232071856a4491fa
ssdeep: 3072:/E/6h/WF+X4g+RXujvcKPUJlZnPo1IpME831bIkI8SZIP90DU6MwsEyPgEwqgvvU:l/5u6EtlNV
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1FFB30D3CA0E15803F587757076B3C2B6006EE48D6A1AA5CD21B2CADD572AFC4D1ECB5B
sha3_384: 306a139a4e8a6f19fe71f59164aa4fc69a9aac3b0fddd0c5d006ffef970a8ee530e35586d30ba47ee22c50b4bacd8e29
ep_bytes: 68a8124000e8eeffffff000040000000
timestamp: 2010-07-18 10:32:32


Version Info:

Translation: 0x0409 0x04b0
ProductName: gyu7
FileVersion: 3.49
ProductVersion: 3.49
InternalName: WWcNFRoj
OriginalFilename: WWcNFRoj.exe

Worm.Win32.Vobfus.dlcn also known as:

Bkav W32.AIDetectMalware
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Heur.PonyStealer.MLT.1
CAT-QuickHeal Worm.VBNA.gen
Skyhigh BehavesLike.Win32.VBObfus.cm
McAfee Downloader-CJX.gen.e
Malwarebytes Generic.Malware.AI.DDS
VIPRE Gen:Heur.PonyStealer.MLT.1
Sangfor Suspicious.Win32.Save.a
K7GW EmailWorm ( 00568ebc1 )
K7AntiVirus EmailWorm ( 00568ebc1 )
Baidu Win32.Trojan.AutoRun.az
VirIT Trojan.Win32.Scar.LM
Symantec W32.Changeup
tehtris Generic.Malware
ESET-NOD32 Win32/VB.NWX
APEX Malicious
TrendMicro-HouseCall WORM_VBNA.SMN
ClamAV Win.Worm.VB-1131
Kaspersky Worm.Win32.Vobfus.dlcn
BitDefender Gen:Heur.PonyStealer.MLT.1
NANO-Antivirus Trojan.Win32.VB.cojahv
SUPERAntiSpyware Trojan.Agent/Gen-FakeAV
Avast Win32:AutoRun-BLX [Wrm]
Tencent Worm.Win32.Vobfus.kav
Emsisoft Gen:Heur.PonyStealer.MLT.1 (B)
Google Detected
F-Secure Worm:W32/Vobfus.gen!K
DrWeb Trojan.MulDrop1.39613
TrendMicro WORM_VBNA.SMN
Trapmine suspicious.low.ml.score
FireEye Generic.mg.5a5cec6ec3437863
Sophos Mal/SillyFDC-D
Ikarus Worm.Win32.Vobfus
Jiangmin Worm.WBNA.ihmv
Webroot W32.Obfuscated.Gen
Varist W32/Vobfus.E.gen!Eldorado
Avira TR/Drop.Age.115200
Antiy-AVL Worm/Win32.WBNA.gen
Microsoft Worm:Win32/Vobfus!pz
Xcitium TrojWare.Win32.VB.SWA@527lh3
Arcabit Trojan.PonyStealer.MLT.1
ZoneAlarm Worm.Win32.Vobfus.dlcn
GData Gen:Heur.PonyStealer.MLT.1
Cynet Malicious (score: 100)
AhnLab-V3 Win32/Vbna4.worm.Gen
BitDefenderTheta Gen:NN.ZevbaF.36804.hm0@a8mTg1li
MAX malware (ai score=81)
VBA32 Worm.VBNA
Cylance unsafe
Panda W32/Autorun.JZS
Rising Worm.VobfusEx!1.99E0 (CLASSIC)
Yandex Trojan.GenAsa!35FPp5jah00
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.5557811.susgen
Fortinet W32/Injector.ADYA!tr
AVG Win32:AutoRun-BLX [Wrm]
DeepInstinct MALICIOUS
alibabacloud Trojan.Win.UnkAgent

How to remove Worm.Win32.Vobfus.dlcn?

Recommended second-opinion scan

Verify the infection before changing system settings

Use GridinSoft Anti-Malware to run a full scan, review detected persistence entries, and quarantine confirmed threats before restarting Windows.

Download GridinSoft Anti-Malware
  • 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.