Categories: Trojan

How to remove “TrojanDropper:Win32/Sirefef!B”?

The TrojanDropper:Win32/Sirefef!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 TrojanDropper:Win32/Sirefef!B virus can do?

Behavioural detection: Executable code extraction – unpacking
Yara rule detections observed from a process memory dump/dropped files/CAPE
Attempted to write to a harddisk volume
CAPE extracted potentially suspicious content
Unconventionial language used in binary resources: Bulgarian
Authenticode signature is invalid
Uses Windows utilities for basic functionality
Behavioural detection: Injection (Process Hollowing)
Behavioural detection: Injection (inter-process)
Attempts to identify installed AV products by installation directory
Creates a copy of itself
Attempts to interact with an Alternate Data Stream (ADS)
Anomalous binary characteristics

How to determine TrojanDropper:Win32/Sirefef!B?


File Info:
name: 3EF2943CB595ED0B334B.mlwpath: /opt/CAPEv2/storage/binaries/5207b5ff2f32ccec0e3280713c4a30073b15f60da1740aa7aa87474e5b79f6a0crc32: 5339F21Dmd5: 3ef2943cb595ed0b334bac1bd61aa055sha1: 09ef5a9fcd1f2950752d65623d1b90089eea3357sha256: 5207b5ff2f32ccec0e3280713c4a30073b15f60da1740aa7aa87474e5b79f6a0sha512: 3d82f1b1946bbb598e69578d7324fda4c76c8a77c839bcc1117d13c8e4b6f9c2a7df82a398781db934d9fef6ea7db98f44fedab61451781d7c5ed3388f7388d2ssdeep: 6144:FIo5u0lYLP2/LpJnkiAvo7Vv/Kx5t0mM6w:FIo51lYL+TDnkiAvoZva0ttype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1CD24017021409E1BC5638F79A9F273C91E4EFCE38A54C65AC5873CBC56222074B6B27Asha3_384: 0afa83550debc3ac43464453ea223fa18b6866a36342418336555208bce93a511d7ef80a6e41a97bed3fad566572fa11ep_bytes: 558bec83e4f883ec3c535657be000010timestamp: 2007-12-22 14:43:52
Version Info:
0: [No Data]

TrojanDropper:Win32/Sirefef!B also known as:

Bkav	W32.AIDetect.malware1
Lionic	Trojan.Win32.Generic.4!c
MicroWorld-eScan	Gen:Variant.Sirefef.1247
ClamAV	Win.Trojan.Zaccess-2569
CAT-QuickHeal	TrojanDropper.Sirefef.A9
ALYac	Gen:Variant.Sirefef.1247
Cylance	Unsafe
VIPRE	Gen:Variant.Sirefef.1247
Sangfor	Suspicious.Win32.Save.a
K7AntiVirus	RootKit ( 0044814a1 )
Alibaba	TrojanDropper:Win32/Sirefef.27c37ea1
K7GW	RootKit ( 0044814a1 )
Cybereason	malicious.cb595e
Cyren	W32/Zbot.OW.gen!Eldorado
Symantec	ML.Attribute.HighConfidence
Elastic	malicious (high confidence)
ESET-NOD32	Win32/Sirefef.FY
APEX	Malicious
Paloalto	generic.ml
Cynet	Malicious (score: 99)
Kaspersky	HEUR:Trojan.Win32.Generic
BitDefender	Gen:Variant.Sirefef.1247
NANO-Antivirus	Trojan.Win32.ZAccess.crazzp
SUPERAntiSpyware	Trojan.Agent/Gen-Sirefef
Avast	Win32:CrypterX-gen [Trj]
Ad-Aware	Gen:Variant.Sirefef.1247
Emsisoft	Gen:Variant.Sirefef.1247 (B)
Comodo	TrojWare.Win32.Kryptik.BQFD@55v62f
DrWeb	BackDoor.Maxplus.13106
TrendMicro	TROJ_GEN.R002C0DHA22
McAfee-GW-Edition	ZeroAccess-FEP!3EF2943CB595
Trapmine	malicious.high.ml.score
FireEye	Generic.mg.3ef2943cb595ed0b
Sophos	ML/PE-A + Mal/EncPk-AKZ
SentinelOne	Static AI – Suspicious PE
GData	Gen:Variant.Sirefef.1247
Jiangmin	Backdoor/ZAccess.pdz
Webroot	W32.Trojan.Gen
Avira	HEUR/AGEN.1207384
MAX	malware (ai score=83)
Antiy-AVL	Trojan/Generic.ASMalwS.116
Kingsoft	Win32.Hack.ZAccess.el.(kcloud)
Microsoft	TrojanDropper:Win32/Sirefef.gen!B
Google	Detected
AhnLab-V3	Trojan/Win32.ZAccess.R86068
McAfee	ZeroAccess-FEP!3EF2943CB595
VBA32	Backdoor.ZAccess
Malwarebytes	Malware.Heuristic.1001
TrendMicro-HouseCall	TROJ_GEN.R002C0DHA22
Rising	Trojan.Generic@AI.98 (RDML:R2kvDgWwli4F1Y+4lPqsTQ)
Yandex	Trojan.GenAsa!sFt6dEk8hR0
Ikarus	Trojan-Dropper.Win32.Sirefef
MaxSecure	Trojan.Malware.300983.susgen
Fortinet	W32/Generic.AC.2230FF!tr
BitDefenderTheta	Gen:NN.ZexaF.34592.oyW@aSRL5ajG
AVG	Win32:CrypterX-gen [Trj]
Panda	Trj/Genetic.gen
CrowdStrike	win/malicious_confidence_100% (W)