Backdoor.Win32.Tofsee.doyk (file analysis)

The Backdoor.Win32.Tofsee.doyk 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.doyk 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 (16 unique times)
• Starts servers listening on 0.0.0.0:6342
• 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:

How to determine Backdoor.Win32.Tofsee.doyk?

File Info:
crc32: D70C9D23
md5: 2723c339256abed6d19b585bfaac09bb
name: 2723C339256ABED6D19B585BFAAC09BB.mlw
sha1: ee822db728a61681d78cdb45a99a75b269125e5f
sha256: 146498c637b3a65d7c12dfad1c8a40c50917cf18d3dd5986dd0f03f6646c0e83
sha512: baeb436cf4ec6f3b58501d662a29c0bd9ecea5f30a309fd473a34f65d2f6481d8938da709279d2650abcba2c3c66672553c55f5067feb1a153a0a3e062aaaf44
ssdeep: 3072:io51m5XT6xqsfU8ZAvAx9nCIBaS7HqvnlLWaz:o5exqsfUjvAP4nx
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed

Version Info:
InternalSurname: debaukd.ekze
Prod: 1.2.7
FileVersions: 1.0.5.6
LegalCo: Copyri (C) 2019, permudationzi

Backdoor.Win32.Tofsee.doyk also known as:

How to remove Backdoor.Win32.Tofsee.doyk?

• 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.