Overview

overview

10

Static

static

3

f6c76564b0...34.exe

windows7-x64

10

f6c76564b0...34.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    653bb56b0d56694921a92ff391a5f43f60e95fe6e34286263023f3ebdd0764b9
  • Size 133KB
  • Sample240417-qs3ybabc2s
  • SHA256 653bb56b0d56694921a92ff391a5f43f60e95fe6e34286263023f3ebdd0764b9
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      f6c76564b0268b7c3b754b05e498fcbc7e11fc1907460d12b1d55dd0d0662834.exe
    • Size 291KB
    • SHA256 f6c76564b0268b7c3b754b05e498fcbc7e11fc1907460d12b1d55dd0d0662834
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks