Categories: Malware

Should I remove “Doina.8131 (B)”?

The Doina.8131 (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 Doina.8131 (B) virus can do?

  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Performs HTTP requests potentially not found in PCAP.
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Attempts to modify proxy settings
  • Attempts to modify browser security settings
  • Creates a copy of itself
  • Deletes executed files from disk
  • Harvests cookies for information gathering

How to determine Doina.8131 (B)?


File Info:

name: 465A94CEB440CFBD2767.mlwpath: /opt/CAPEv2/storage/binaries/0125f4b55682ca5ca5d5c64eb96e0352c9c8dd99d675670da9de15dbc56932fccrc32: 80125B01md5: 465a94ceb440cfbd27671d3e3e2b7cecsha1: cc12dc785a7b0ade60be33e29b799d000a1dfa6bsha256: 0125f4b55682ca5ca5d5c64eb96e0352c9c8dd99d675670da9de15dbc56932fcsha512: 53d8e2baa82a147a910eaf5959b3d1eca47c96d8e52f2d7e54df4d084bc98222c1bacbb960c21ad2858c0aa33918c69ce0ddfe9d3d4f1bf494df9b6d6466aa3cssdeep: 49152:ITMlxnTABV9276ncfN+UyT+UkO/acWJrAja5Rb4wME+iId+qrViN1hdpxtVBwcED:6MlxnTABV9276ncfN+UyT+UkO/acWJrQtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T121A59D23E19180F1D20200712AF697399D79BB660D25CBA7DBE0DEF85D613E1DA2731Esha3_384: f28d634adea54e64c3598e36f40ad3eb88b80bc5aaf3e1528aa0132f2d4704049f72558f6e91fe1371df57deb0e171c4ep_bytes: e81f770000e978feffffb8faf14a00a3timestamp: 2016-08-22 07:58:22

Version Info:

FileVersion: 6.7.9.3FileDescription: ProductName: ProductVersion: 6.7.9.3CompanyName: LegalCopyright: Comments: 本程序使用易语言编写(http://www.dywt.com.cn)Translation: 0x0804 0x04b0

Doina.8131 (B) also known as:

Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Doina.8131
ClamAV Win.Malware.Mikey-6718286-0
FireEye Generic.mg.465a94ceb440cfbd
CAT-QuickHeal Trojan.Tonmye.A4
ALYac Gen:Variant.Doina.8131
Cylance Unsafe
Zillya Adware.Hebchengjiu.Win32.18
Sangfor Virus.Win32.Save.a
K7AntiVirus Adware ( 004f4efb1 )
K7GW Adware ( 004f4efb1 )
Cybereason malicious.eb440c
Cyren W32/S-54031f37!Eldorado
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 a variant of Win32/Adware.Hebchengjiu.A
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky not-a-virus:HEUR:AdWare.Win32.Generic
BitDefender Gen:Variant.Doina.8131
NANO-Antivirus Riskware.Win32.FlyStudio.egioic
Avast Win32:Evo-gen [Trj]
Tencent Adware.Win32.Hebchengjiu.16000480
Ad-Aware Gen:Variant.Doina.8131
Sophos Generic PUA MM (PUA)
Comodo TrojWare.Win32.Agent.OSCF@5rs7jr
DrWeb Trojan.DownLoader23.7752
VIPRE Gen:Variant.Doina.8131
TrendMicro TROJ_GEN.R035C0OIA22
McAfee-GW-Edition BehavesLike.Win32.CoinMiner.vh
Trapmine malicious.moderate.ml.score
Emsisoft Gen:Variant.Doina.8131 (B)
SentinelOne Static AI – Malicious PE
GData Win32.Trojan.PSE.10V60DG
Jiangmin TrojanDropper.Injector.bjta
Avira HEUR/AGEN.1229234
MAX malware (ai score=85)
Antiy-AVL Trojan/Generic.ASMalwS.3B95
ZoneAlarm not-a-virus:HEUR:AdWare.Win32.Generic
Microsoft Trojan:Win32/Wacatac.B!ml
Google Detected
AhnLab-V3 PUP/Win32.Helper.R189978
Acronis suspicious
McAfee GenericR-IOJ!465A94CEB440
VBA32 BScope.Trojan.Downloader
Malwarebytes Generic.Trojan.Malicious.DDS
TrendMicro-HouseCall TROJ_GEN.R035C0OIA22
Rising Trojan.ClickDouTu!1.A668 (CLASSIC)
Yandex Trojan.GenAsa!/TttOAwCcdc
Ikarus Trojan.Win32.Tonmye
MaxSecure Trojan.Malware.300983.susgen
Fortinet Adware/Hebchengjiu.A
BitDefenderTheta Gen:NN.ZexaF.34646.fs1@aSRJwYob
AVG Win32:Evo-gen [Trj]
Panda Trj/Genetic.gen
CrowdStrike win/grayware_confidence_100% (W)

How to remove Doina.8131 (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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