About “MSIL/TrojanDownloader.Agent.KEF” infection

The MSIL/TrojanDownloader.Agent.KEF 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 MSIL/TrojanDownloader.Agent.KEF virus can do?

Dynamic (imported) function loading detected
CAPE extracted potentially suspicious content
Authenticode signature is invalid

How to determine MSIL/TrojanDownloader.Agent.KEF?


File Info:
name: 734C8FFC050CF5B5329E.mlw
path: /opt/CAPEv2/storage/binaries/4f36dcdeba6afdd67da6e81fcb70d5f6ac146055d4d1b07f76ce433a13965679
crc32: 1D334330
md5: 734c8ffc050cf5b5329eea84bf12688e
sha1: b131c5fe765521a7afddb50db62199f662fcdf71
sha256: 4f36dcdeba6afdd67da6e81fcb70d5f6ac146055d4d1b07f76ce433a13965679
sha512: eb6bfec055152771fa7508d629d9c6a0fcd5e86077bb9906127b3ec10ac90605f60d79f3943a3c0a31f8f51103752c411f745cfbadfd46a3f0bff52468a056aa
ssdeep: 384:V0GSTpz7plzKCyDtdawW6+Z2qqR1tmAhcLDAk1sER9wLW93yMokI:m7pNKCCPawJDqqRahLDtDROLW9N
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T1A9A24B295E9CC133C5BD6B7F6473A2090172E73F6A82EB8F5CDCA1A506563C247C11E2
sha3_384: 574caaaadd00840b961796a925089d1306457a73b2af8b23af1d5780ef1452f4217a2c9fefdb6d96b776785998e90641
ep_bytes: ff250020400000000000000000000000
timestamp: 2022-01-24 20:38:52

Version Info:
Translation: 0x0000 0x04b0
Comments: 
CompanyName: 
FileDescription: Assault Spoofer
FileVersion: 2.0.0.0
InternalName: Assault Dev.exe
LegalCopyright: Copyright ©  2021
LegalTrademarks: 
OriginalFilename: Assault Dev.exe
ProductName: Assault Spoofer
ProductVersion: 2.0.0.0
Assembly Version: 2.0.0.0

MSIL/TrojanDownloader.Agent.KEF also known as:

Lionic	Trojan.Win32.Perseus.4!c
MicroWorld-eScan	Gen:Variant.MSILPerseus.236847
FireEye	Gen:Variant.MSILPerseus.236847
CAT-QuickHeal	Trojan.YakbeexMSIL.ZZ4
ALYac	Gen:Variant.MSILPerseus.236847
Sangfor	Trojan.Win32.Sabsik.FL
ESET-NOD32	MSIL/TrojanDownloader.Agent.KEF
APEX	Malicious
BitDefender	Gen:Variant.MSILPerseus.236847
Avast	Win32:Trojan-gen
Rising	Trojan.Generic/MSIL@AI.90 (RDM.MSIL:ZpaymGvph7oyWV4NhQvpxw)
Ad-Aware	Gen:Variant.MSILPerseus.236847
TrendMicro	TROJ_GEN.R002C0PB122
McAfee-GW-Edition	RDN/Generic.dx
Emsisoft	Gen:Variant.MSILPerseus.236847 (B)
SentinelOne	Static AI – Suspicious PE
GData	Gen:Variant.MSILPerseus.236847
Webroot	W32.Trojan.Gen
MAX	malware (ai score=80)
Microsoft	Trojan:Win32/Sabsik.TE.B!ml
Cynet	Malicious (score: 100)
McAfee	RDN/Generic.dx
TrendMicro-HouseCall	TROJ_GEN.R002C0PB122
Fortinet	MSIL/Agent.KEF!tr.dldr
BitDefenderTheta	Gen:NN.ZemsilF.34182.bm0@aqX@!ak
AVG	Win32:Trojan-gen
Cybereason	malicious.c050cf

How to remove MSIL/TrojanDownloader.Agent.KEF?

MSIL/TrojanDownloader.Agent.KEF 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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