Categories: Backdoor

Should I remove “Backdoor.Win32.Tofsee.doyi”?

The Backdoor.Win32.Tofsee.doyi 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 Backdoor.Win32.Tofsee.doyi virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Attempts to connect to a dead IP:Port (18 unique times)
  • Starts servers listening on 0.0.0.0:7843
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Ukrainian
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Uses Windows utilities for basic functionality
  • Enumerates services, possibly for anti-virtualization
  • Executed a process and injected code into it, probably while unpacking
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup
  • A possible cryptomining command was executed
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics

Related domains:

microsoft-com.mail.protection.outlook.com
0.0.0.0.dnsbl.sorbs.net
0.0.0.0.bl.spamcop.net
0.0.0.0.zen.spamhaus.org
0.0.0.0.sbl-xbl.spamhaus.org
0.0.0.0.cbl.abuseat.org
www.footshop.eu
msr.pool-pay.com
www.instagram.com
mirollex.com
m.jdsports.nl

How to determine Backdoor.Win32.Tofsee.doyi?


File Info:

crc32: A410436Dmd5: 29ed8c7ab5a0c13ad330fe2b00008babname: 29ED8C7AB5A0C13AD330FE2B00008BAB.mlwsha1: 96558a7f7efe3721415b72acca8484b5c55a4747sha256: b3356f39253c449d8a411f4068b4bf568368c63f9425a23f2e00cc1f896f86edsha512: 6737c4f118aba71b165b8e764062f06ea253d4ee5acfa5cd25122565ca2d12f7de17c65149ba1b40059e3990141c413523127602260f1484f723dbbfd6b5d342ssdeep: 3072:Pdx0KOjtSx7joLODxtnblIMPRWGY/JKBGjGyk:1x7Ey7ELODx9bnJWGY/g0yyktype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

InternalSurname: debaukd.ekzeProd: 1.2.7FileVersions: 1.0.5.6LegalCo: Copyri (C) 2019, permudationzi

Backdoor.Win32.Tofsee.doyi also known as:

Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.35919796
FireEye Generic.mg.29ed8c7ab5a0c13a
Qihoo-360 Win32/Backdoor.057
McAfee Artemis!29ED8C7AB5A0
Cylance Unsafe
Sangfor Malware
K7AntiVirus Trojan ( 0057567a1 )
Alibaba Backdoor:Win32/Tofsee.5c9e732c
K7GW Trojan ( 0057567a1 )
BitDefenderTheta Gen:NN.ZexaF.34700.jmGfaWeCn9hc
Symantec ML.Attribute.HighConfidence
Paloalto generic.ml
Kaspersky Backdoor.Win32.Tofsee.doyi
BitDefender Trojan.GenericKD.35919796
AegisLab Trojan.Multi.Generic.4!c
Avast Win32:MalwareX-gen [Trj]
Rising Backdoor.Agent!8.C5D (TFE:5:IhzqwXEXQUL)
Ad-Aware Trojan.GenericKD.35919796
Sophos Mal/Generic-S
F-Secure Trojan.TR/Kryptik.qddyj
DrWeb Trojan.Siggen11.56902
McAfee-GW-Edition BehavesLike.Win32.Trojan.cc
SentinelOne Static AI – Malicious PE
Emsisoft Trojan.Crypt (A)
APEX Malicious
Avira TR/Kryptik.qddyj
Microsoft Trojan:Win32/Zenpack.MU!MTB
Arcabit Trojan.Generic.D22417B4
ZoneAlarm Backdoor.Win32.Tofsee.doyi
GData Trojan.GenericKD.35919796
Cynet Malicious (score: 100)
Acronis suspicious
VBA32 Backdoor.Tofsee
ALYac Trojan.GenericKD.35919796
MAX malware (ai score=84)
Malwarebytes Trojan.MalPack.GS
ESET-NOD32 a variant of Win32/Kryptik.HILV
Tencent Win32.Backdoor.Tofsee.Huqf
Ikarus Trojan.Win32.Krypt
eGambit Unsafe.AI_Score_95%
Fortinet W32/Kryptik.HGHW!tr
AVG FileRepMalware
Panda Trj/Genetic.gen
CrowdStrike win/malicious_confidence_100% (D)

How to remove Backdoor.Win32.Tofsee.doyi?

  • 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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