Categories: Backdoor

Backdoor.Win32.Tofsee.amdh (file analysis)

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

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Enumerates services, possibly for anti-virtualization
  • Deletes its original binary from disk
  • Executed a process and injected code into it, probably while unpacking
  • Installs itself for autorun at Windows startup
  • Attempts to interact with an Alternate Data Stream (ADS)

How to determine Backdoor.Win32.Tofsee.amdh?


File Info:

crc32: DD903AEFmd5: 82652d6a1db5a13eaeb9a633db0a1b39name: 82652D6A1DB5A13EAEB9A633DB0A1B39.mlwsha1: 775d78fae54e67a1ef55a1386551d93fbcd2d2d7sha256: 7e25da0160ac9c14ea9d7e70465dd88dab79195725f8e7365c3421f6ab42821bsha512: 4568fd44b5ec9ece169b5c3caca7df33025b9b5ceda5433acdd922b73fbe417aeec000a073f4dc32e19eb5c571a2e70ee96da684265ec30bbbaf464a1ba3c295ssdeep: 1536:FWGCTnjiZbMHDIxXX5BwUCkSDkLhD0Nw4o74p3wKUwwy0qtp5or7YBbNk:/CTnWZEDIxXPwUCFkF0Nwt74NB0QT47type: MS-DOS executable, MZ for MS-DOS

Version Info:

0: [No Data]

Backdoor.Win32.Tofsee.amdh also known as:

Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005157701 )
DrWeb Trojan.MulDrop8.59085
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.41040075
Cylance Unsafe
Zillya Backdoor.Tofsee.Win32.2028
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Backdoor:Win32/Tofsee.0eb025b2
K7GW Trojan ( 005157701 )
Cybereason malicious.a1db5a
ESET-NOD32 Win32/Tofsee.BJ
APEX Malicious
Avast FileRepMalware
ClamAV Win.Malware.Locky-7090183-0
Kaspersky Backdoor.Win32.Tofsee.amdh
BitDefender Trojan.GenericKD.41040075
NANO-Antivirus Trojan.Win32.Tofsee.fjxfqs
MicroWorld-eScan Trojan.GenericKD.41040075
Tencent Win32.Backdoor.Tofsee.Dypx
Ad-Aware Trojan.GenericKD.41040075
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo TrojWare.Win32.Tofsee.BJ@79g6sc
BitDefenderTheta Gen:NN.ZexaF.34628.fmqaaqtsYrj
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
FireEye Generic.mg.82652d6a1db5a13e
Emsisoft Trojan.GenericKD.41040075 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Poison.aus
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1119282
Microsoft Backdoor:Win32/Tofsee.T
Arcabit Trojan.Generic.D27238CB
AegisLab Trojan.Win32.Tofsee.4!c
GData Trojan.GenericKD.41040075
AhnLab-V3 Malware/Win32.Ransom_cerber.C2839936
Acronis suspicious
McAfee Artemis!82652D6A1DB5
MAX malware (ai score=100)
VBA32 Trojan.FakeAV.01657
Malwarebytes Malware.Heuristic.1003
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Rising Trojan.Kryptik!1.AE8C (CLOUD)
Ikarus PUA.Generic
Fortinet W32/Kryptik.GKNL!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Trojan.439

How to remove Backdoor.Win32.Tofsee.amdh?

  • 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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