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.

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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.mlw
path: /opt/CAPEv2/storage/binaries/dbb342a2c5c4fb63004faf6b5c79c7c850d80189f913220818a314166dc4dfcc
crc32: DC839F20
md5: 2de6d19fac6948e42ddfe32e73bb826f
sha1: 9ae6d621f63044d327e52a6133ed65ce2599f2f0
sha256: dbb342a2c5c4fb63004faf6b5c79c7c850d80189f913220818a314166dc4dfcc
sha512: e246c266c1fed3df20932e0336862268899bc2c2f5987024a422c417c79898a5ef1680a12374060e969eb13f13510be7eb807c71992b3a5cd6fa384c284ec27f
ssdeep: 6144:3lqiMbO7p6sJk/nFUiia008/CaNV7kgJhps2FRbq4LT:1+O7L+/nFUVf08/CaXkgJhp1LL
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11BC6D5017B95954AE4223E364935CAA65B26FFFBFD1003CB31843F1EEC7A6605A81E53
sha3_384: ead037ee1d57806222a33711a9b38202599cfd73e115a849319de3e16f6a13d601a57f1ec91a7dd8dfe7533ca7b5de18
ep_bytes: 8bff558bece876b30000e8110000005d
timestamp: 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.