Overview

overview

10

Static

static

3

30205eaf6f...72.exe

windows7-x64

10

30205eaf6f...72.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    b2ed945fc6554c9df5c0b3cfec1ad40e699f7f4512fe1d44e995585da1da1a6d
  • Size 152KB
  • Sample240417-qvs6wsbd2w
  • SHA256 b2ed945fc6554c9df5c0b3cfec1ad40e699f7f4512fe1d44e995585da1da1a6d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      30205eaf6f581036262bfc099dfc5cc5d0e4d771dca3d1c4cf3dada59d097672.exe
    • Size 240KB
    • SHA256 30205eaf6f581036262bfc099dfc5cc5d0e4d771dca3d1c4cf3dada59d097672
    • 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