Backdoor:Win32/Tofsee.BK!MTB information

The Backdoor:Win32/Tofsee.BK!MTB 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.BK!MTB virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Behavioural detection: Executable code extraction – unpacking
• Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Possible date expiration check, exits too soon after checking local time
• Checks adapter addresses which can be used to detect virtual network interfaces
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• A named pipe was used for inter-process communication
• Reads data out of its own binary image
• A process created a hidden window
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• Unconventionial language used in binary resources: Korean
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Enumerates services, possibly for anti-virtualization
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Deletes its original binary from disk
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Injection with CreateRemoteThread in a remote process
• Collects and encrypts information about the computer likely to send to C2 server
• Installs itself for autorun at Windows startup
• Installs itself for autorun at Windows startup
• Creates a hidden or system file
• CAPE detected the Tofsee malware family
• Deletes executed files from disk
• Attempts to interact with an Alternate Data Stream (ADS)
• Anomalous binary characteristics
• Uses suspicious command line tools or Windows utilities

How to determine Backdoor:Win32/Tofsee.BK!MTB?

File Info:
name: 2DE6D19FAC6948E42DDF.mlwpath: /opt/CAPEv2/storage/binaries/dbb342a2c5c4fb63004faf6b5c79c7c850d80189f913220818a314166dc4dfcccrc32: DC839F20md5: 2de6d19fac6948e42ddfe32e73bb826fsha1: 9ae6d621f63044d327e52a6133ed65ce2599f2f0sha256: dbb342a2c5c4fb63004faf6b5c79c7c850d80189f913220818a314166dc4dfccsha512: e246c266c1fed3df20932e0336862268899bc2c2f5987024a422c417c79898a5ef1680a12374060e969eb13f13510be7eb807c71992b3a5cd6fa384c284ec27fssdeep: 6144:3lqiMbO7p6sJk/nFUiia008/CaNV7kgJhps2FRbq4LT:1+O7L+/nFUVf08/CaXkgJhp1LLtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11BC6D5017B95954AE4223E364935CAA65B26FFFBFD1003CB31843F1EEC7A6605A81E53sha3_384: ead037ee1d57806222a33711a9b38202599cfd73e115a849319de3e16f6a13d601a57f1ec91a7dd8dfe7533ca7b5de18ep_bytes: 8bff558bece876b30000e8110000005dtimestamp: 2021-03-26 00:14:35
Version Info:
Translations: 0x0152 0x036f

Backdoor:Win32/Tofsee.BK!MTB also known as:

How to remove Backdoor:Win32/Tofsee.BK!MTB?

• 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.