Categories: Malware

Doina.48991 (file analysis)

The Doina.48991 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 Doina.48991 virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • HTTPS urls from behavior.
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Unconventionial binary language: Russian
  • Unconventionial language used in binary resources: Russian
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities to create a scheduled task
  • CAPE detected the RedLine malware family
  • Attempts to identify installed AV products by installation directory
  • Attempts to modify proxy settings
  • Appears to use command line obfuscation
  • Deletes executed files from disk
  • Uses suspicious command line tools or Windows utilities
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Doina.48991?


File Info:

name: 4EA547769D257014E276.mlwpath: /opt/CAPEv2/storage/binaries/a20ccffcd0c283418be5590ab2719f17feba0fcfedcc253e6bcfe7582d52f5afcrc32: 7003865Fmd5: 4ea547769d257014e276d8b4b668b37asha1: 12041bab350a8f15b1ead23cc01c804318f30cd5sha256: a20ccffcd0c283418be5590ab2719f17feba0fcfedcc253e6bcfe7582d52f5afsha512: 17a3e80b3710d2ff7f414861b3e8d861754abe3347d7c151ab258406352545190564fff1fa0b4333a650963a8d38aa174f8a47ad21a85e5fb41d6d9c0a69addfssdeep: 24576:4ykgtf/obxUhbOrYDdf0iDp4CnTGVj3VLxsF:/kgtfAl6bWAdNDTnMLxstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1AB051247A7E89032E8B953708DFA03C3053BBD955B38429B174F596E58729B0A6307BFsha3_384: f6c82b779b5e818531c5405d99703d6481c644111644a6b3eb02f345cf0bb41dddf150180cc2d2ae04ba185140c7ec4dep_bytes: e8f0060000e9000000006a5868b87240timestamp: 2022-05-24 22:49:06

Version Info:

CompanyName: Microsoft CorporationFileDescription: Самоизвлечение CAB-файлов Win32 FileVersion: 11.00.17763.1 (WinBuild.160101.0800)InternalName: Wextract LegalCopyright: © Корпорация Майкрософт. Все права защищены.OriginalFilename: WEXTRACT.EXE .MUIProductName: Internet ExplorerProductVersion: 11.00.17763.1Translation: 0x0419 0x04b0

Doina.48991 also known as:

Elastic malicious (high confidence)
DrWeb Trojan.Siggen19.32857
MicroWorld-eScan Gen:Variant.Babar.167435
CAT-QuickHeal Trojan.MSIL
ALYac Gen:Variant.Doina.48991
Cylance unsafe
K7AntiVirus Trojan-Downloader ( 0057994f1 )
K7GW Trojan-Downloader ( 0057994f1 )
CrowdStrike win/malicious_confidence_70% (W)
Cyren W32/Agent.FRF.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 multiple detections
APEX Malicious
ClamAV Win.Packed.Disabler-9987080-0
Kaspersky UDS:Trojan.MSIL.Agent.gen
NANO-Antivirus Trojan.Win32.Disabler.junsud
SUPERAntiSpyware Trojan.Agent/Gen-Downloader
Avast Win32:TrojanX-gen [Trj]
Tencent Trojan-Ransom.Win32.Stop.gen
F-Secure Trojan.TR/Disabler.ocayi
VIPRE Trojan.GenericKD.65331035
TrendMicro TROJ_GEN.R002C0PBK23
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
Trapmine malicious.high.ml.score
FireEye Generic.mg.4ea547769d257014
SentinelOne Static AI – Malicious SFX
GData Generic.Trojan.PSEB.WGPCII
Google Detected
Avira TR/Disabler.ocayi
Antiy-AVL Trojan[Downloader]/Win32.Amadey
Xcitium ApplicUnwnt@#1ftfc2ja2g1dd
ZoneAlarm UDS:DangerousObject.Multi.Generic
Microsoft Trojan:Win32/Wacatac.B!ml
Cynet Malicious (score: 99)
McAfee Artemis!2120C6C2708A
Malwarebytes Generic.Trojan.Injector.DDS
TrendMicro-HouseCall TROJ_GEN.R002C0PBK23
Rising Downloader.Amadey!8.125AC (TFE:5:HlAGNWrdXqP)
Yandex Trojan.Disabler!G6z7qDxyklM
Ikarus Trojan-Downloader.Win32.Amadey
Fortinet PossibleThreat
AVG Win32:TrojanX-gen [Trj]
Cybereason malicious.69d257

How to remove Doina.48991?

  • 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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