Overview

overview

10

Static

static

3

cc3ac85b3c...83.exe

windows7-x64

10

cc3ac85b3c...83.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    cc3ac85b3c5690d542ed9f3266b9bd83.exe
  • Size 204KB
  • Sample240521-c5a66sfe8v
  • SHA256 8eb33da353d3756d8cd4cb9308fd5ef72a9b35441bec41fd17c3f3ee508ea9ab
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      cc3ac85b3c5690d542ed9f3266b9bd83.exe
    • Size 204KB
    • SHA256 8eb33da353d3756d8cd4cb9308fd5ef72a9b35441bec41fd17c3f3ee508ea9ab
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    tofseeevasionexecutionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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