Categories: Malware

What is “Doina.48991”?

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: 3F142808601CDBA66B4E.mlwpath: /opt/CAPEv2/storage/binaries/52ab0e70e5e9f1abb66e365e29ae41e27df9e6e3e7b4625a725eab43dee9d9f3crc32: 0509E012md5: 3f142808601cdba66b4efffb2f6a16ebsha1: e70ff7e393694fd18d954ccdb560f2e859f43b74sha256: 52ab0e70e5e9f1abb66e365e29ae41e27df9e6e3e7b4625a725eab43dee9d9f3sha512: 652a47153fa12c9b6860b2f36f9f13e5ad50bde186e6a2c78ba74795b4800ce2132947d3ff4e8d8f01298341888d99898620d69d5d9968d57c6abd82cad3a20cssdeep: 24576:Uy3c2VEIP6zQMv7Cjr9CKlh1s7gKwmNu:jM2JitD+b1s7gKwstype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T13E152317B7EC4072F9B1573059FA03D31A3B7DE05A38839223DA9D1A1873974A53AB27sha3_384: be873005d5cec7b180520551f3cd41a4035a1dda259e67c304d63baa7e824b8a331a7ab57589dc7044ab54e34bd3c6ecep_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:

DrWeb Trojan.Siggen19.32857
ClamAV Win.Downloader.Amadey-9986882-0
FireEye Generic.mg.3f142808601cdba6
ALYac Gen:Variant.Doina.48991
Malwarebytes MachineLearning/Anomalous.94%
VIPRE Gen:Variant.Jaik.126201
K7AntiVirus Trojan-Downloader ( 0057994f1 )
K7GW Trojan-Downloader ( 0057994f1 )
CrowdStrike win/malicious_confidence_70% (W)
Cyren W32/KillAV.KMEF-6536
Elastic malicious (high confidence)
ESET-NOD32 multiple detections
APEX Malicious
Cynet Malicious (score: 99)
Kaspersky UDS:Trojan.Win32.Zenpak.gen
SUPERAntiSpyware Trojan.Agent/Gen-Downloader
Avast Win32:TrojanX-gen [Trj]
Tencent Trojan-Ransom.Win32.Stop.gen
TrendMicro TROJ_GEN.R002C0PBS23
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
Trapmine malicious.high.ml.score
Ikarus Trojan-Downloader.Win32.Amadey
Avira TR/AD.Nekark.pjulv
Antiy-AVL Trojan/Script.Phonzy
Microsoft Trojan:Win32/Wacatac.B!ml
Google Detected
McAfee Artemis!BDFE6B91BFAB
Cylance unsafe
TrendMicro-HouseCall TROJ_GEN.R002C0PBS23
Rising Downloader.Amadey!8.125AC (TFE:5:HlAGNWrdXqP)
Yandex Trojan.Disabler!G6z7qDxyklM
SentinelOne Static AI – Malicious SFX
Fortinet MSIL/Disabler.DR!tr
AVG Win32:TrojanX-gen [Trj]
Cybereason malicious.8601cd

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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