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.

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: D70C9D23md5: 2723c339256abed6d19b585bfaac09bbname: 2723C339256ABED6D19B585BFAAC09BB.mlwsha1: ee822db728a61681d78cdb45a99a75b269125e5fsha256: 146498c637b3a65d7c12dfad1c8a40c50917cf18d3dd5986dd0f03f6646c0e83sha512: baeb436cf4ec6f3b58501d662a29c0bd9ecea5f30a309fd473a34f65d2f6481d8938da709279d2650abcba2c3c66672553c55f5067feb1a153a0a3e062aaaf44ssdeep: 3072:io51m5XT6xqsfU8ZAvAx9nCIBaS7HqvnlLWaz:o5exqsfUjvAP4nxtype: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed
Version Info:
InternalSurname: debaukd.ekzeProd: 1.2.7FileVersions: 1.0.5.6LegalCo: 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.