Categories: Trojan

How to remove “Trojan-Downloader.Win32.Deyma.boc”?

The Trojan-Downloader.Win32.Deyma.boc 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 Trojan-Downloader.Win32.Deyma.boc virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (4 unique times)
  • Presents an Authenticode digital signature
  • Creates RWX memory
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Uses Windows utilities for basic functionality
  • A process attempted to delay the analysis task by a long amount of time.
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to identify installed AV products by installation directory
  • Creates a copy of itself
  • Harvests credentials from local FTP client softwares
  • Harvests information related to installed instant messenger clients
  • Harvests information related to installed mail clients
  • Collects information to fingerprint the system

Related domains:

redirector.gvt1.com
r4—sn-4g5e6nl6.gvt1.com

How to determine Trojan-Downloader.Win32.Deyma.boc?


File Info:

crc32: 694D3CA6md5: f7592a0c4e90ae30abdde612c8389aa3name: upload_filesha1: dc8c99fe7b2e94527e569b63f10392ac5cac6c96sha256: 4e48224802ab056465fbed3aee1ddcf48b5c77392a8f0b12d5b5b4c648e18515sha512: 385331e65f159e1e83a2f297376c913ae431c7c0db6b613a6f2880b0209b56e4d4fa0de069d46338629f0f13b657aca8d02a4b30f689d6d3c82061ff28f77a91ssdeep: 3072:BjY9xJ5k3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3v3veM:y9DeCBa1kf0Ttype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.InternalName: wmlaunch.exeFileVersion: 11.0.5721.5262 (WMP_11.090130-1421)CompanyName: Microsoft CorporationProductName: Microsoftxae Windowsxae Operating SystemProductVersion: 11.0.5721.5262FileDescription: Windows Media Player LauncherOriginalFilename: wmlaunch.exeTranslation: 0x0409 0x04b0

Trojan-Downloader.Win32.Deyma.boc also known as:

Bkav W32.AIDetectVM.malware2
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader34.9692
MicroWorld-eScan Trojan.GenericKD.43559389
FireEye Generic.mg.f7592a0c4e90ae30
Qihoo-360 Generic/HEUR/QVM20.1.E3AC.Malware.Gen
ALYac Trojan.GenericKD.43559389
Cylance Unsafe
AegisLab Trojan.Win32.Deyma.a!c
Sangfor Malware
K7AntiVirus Trojan ( 005652be1 )
BitDefender Trojan.GenericKD.43559389
K7GW Trojan ( 005652be1 )
Cybereason malicious.e7b2e9
Invincea heuristic
BitDefenderTheta Gen:NN.ZexaF.34144.kr1@aexs1Tli
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/GenKryptik.EPEX
APEX Malicious
Paloalto generic.ml
Kaspersky Trojan-Downloader.Win32.Deyma.boc
Alibaba TrojanDownloader:Win32/Deyma.b0991024
Rising Trojan.Kryptik!1.C974 (CLOUD)
Ad-Aware Trojan.GenericKD.43559389
Emsisoft Trojan.GenericKD.43559389 (B)
F-Secure Trojan.TR/Kryptik.stadp
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_GEN.R057C0PGT20
Sophos Mal/EncPk-APV
SentinelOne DFI – Malicious PE
Jiangmin TrojanDownloader.Deyma.qq
Avira TR/Kryptik.stadp
MAX malware (ai score=82)
Antiy-AVL GrayWare/Win32.Kryptik.ehls
Microsoft Trojan:Win32/Cridex.AR!cert
Arcabit Trojan.Generic.D298A9DD
ZoneAlarm Trojan-Downloader.Win32.Deyma.boc
GData Trojan.GenericKD.43559389
McAfee Packed-GBS!F7592A0C4E90
VBA32 BScope.Trojan.Inject
Malwarebytes Spyware.PasswordStealer
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_GEN.R057C0PGT20
Ikarus Trojan-Spy.Agent
Fortinet W32/Cridex.VHO!tr
AVG Win32:DangerousSig [Trj]
Avast Win32:DangerousSig [Trj]
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan-Downloader.Win32.Deyma.boc?

  • 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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