Categories: Malware

Sirefef.950 (B) information

The Sirefef.950 (B) 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 Sirefef.950 (B) 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
  • Attempts to disable Windows Auto Updates
  • 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 Sirefef.950 (B)?


File Info:

name: 48428D236F0B76FC0428.mlwpath: /opt/CAPEv2/storage/binaries/f7c0e9a2f2c873dd75fc9e910bb2a9e3a925f547faaf635e7e93dca179f46bcecrc32: 0CD328F1md5: 48428d236f0b76fc0428bd3d66dd7b20sha1: ea367af6749ef4b73b4d69118ce73f93094ea431sha256: f7c0e9a2f2c873dd75fc9e910bb2a9e3a925f547faaf635e7e93dca179f46bcesha512: 13a742698f5dd218fdd2d9bbd7d82e897efcae10c2573402363b5bc5c0b0d175215b3ab9f4bf96fe7251c1d45d440101f4439dc544d7cda044985bbeecf7a319ssdeep: 1536:KeH0cL3BnxGO9+dGrNsjmJzNuKuFr1u5BRQbCcIb:R3BxGO9+VjO+2type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1C8043E9F7FF52244F9590638ADF386FE19D2A98C7A1B4142673036641BEFE021C24A5Fsha3_384: f8308f656d3f79969bd7e253e252a330ab6f8328310fc63cea8335d275a18576e79b0a9ccf4f1ad73eff0a05a3efdf4aep_bytes: 6894124000e8f0ffffff000048000000timestamp: 2012-04-09 22:21:33

Version Info:

Translation: 0x0409 0x04b0ProductName: dbnTsyFileVersion: 1.00ProductVersion: 1.00InternalName: dicTsuOriginalFilename: dicTsu.exe

Sirefef.950 (B) also known as:

Bkav W32.AIDetectMalware
tehtris Generic.Malware
MicroWorld-eScan Gen:Variant.Sirefef.950
FireEye Generic.mg.48428d236f0b76fc
CAT-QuickHeal Trojan.Beebone.D
Skyhigh BehavesLike.Win32.Generic.cz
McAfee Generic VB.kk
Malwarebytes Generic.Malware.AI.DDS
Zillya Worm.Vobfus.Win32.428402
Sangfor Suspicious.Win32.Save.vb
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Malware:Win32/km_2fac0.None
K7GW EmailWorm ( 0054d10f1 )
K7AntiVirus EmailWorm ( 0054d10f1 )
BitDefenderTheta Gen:NN.ZevbaF.36802.lq0@aynzIpei
VirIT Trojan.Win32.Generic.CKVZ
Symantec W32.Changeup
Elastic malicious (high confidence)
ESET-NOD32 Win32/AutoRun.VB.AUL
APEX Malicious
TrendMicro-HouseCall WORM_VOBFUS.SMJA
Avast Win32:VB-ACGR [Trj]
ClamAV Win.Trojan.Changeup-6169544-0
Kaspersky Worm.Win32.Vobfus.ablx
BitDefender Gen:Variant.Sirefef.950
NANO-Antivirus Trojan.Win32.Jorik.cihugs
SUPERAntiSpyware Worm.Vobfus
Tencent Trojan.Win32.Jorik.pa
Emsisoft Gen:Variant.Sirefef.950 (B)
Baidu Win32.Worm.VB.nn
F-Secure Trojan.TR/Jorik.Vobfu.ahpj
DrWeb Win32.HLLW.Autoruner1.14788
VIPRE Gen:Variant.Sirefef.950
TrendMicro WORM_VOBFUS.SMJA
Trapmine malicious.high.ml.score
Sophos W32/Vobfus-AH
Ikarus Trojan.Win32.Jorik
MAX malware (ai score=81)
Jiangmin Trojan/Jorik.glab
Google Detected
Avira TR/Jorik.Vobfu.ahpj
Varist W32/Vobfus.AJ.gen!Eldorado
Antiy-AVL Worm/Win32.WBNA.gen
Kingsoft malware.kb.a.1000
Microsoft Worm:Win32/Vobfus!pz
Xcitium Worm.Win32.VB.AUA@4o7zkg
Arcabit Trojan.Sirefef.950
ViRobot Worm.Win32.A.VBNA.102400.BA
ZoneAlarm Worm.Win32.Vobfus.ablx
GData Win32.Trojan.PSE1.8A9OXW
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Vobfus.R150635
Acronis suspicious
VBA32 Trojan.Jorik
ALYac Gen:Variant.Sirefef.950
Cylance unsafe
Panda W32/Vobfus.GEW.worm
Rising Worm.VobfusEx!1.99DC (CLASSIC)
Yandex Trojan.GenAsa!n9vpFGRhqIs
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/VBObfus.AU!tr
AVG Win32:VB-ACGR [Trj]
DeepInstinct MALICIOUS
alibabacloud Worm:Win/Vobfus.efae4ae2

How to remove Sirefef.950 (B)?

  • 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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