General

  • Target

    229b6c4fa6bf3086364bbb00da7199f5e5c006062b8d986aebc6a68efe28516f

  • Size

    97KB

  • Sample

    220612-e91czaahd4

  • MD5

    4d20335690b8218af519b6a5ff523c94

  • SHA1

    05b23688e15db6b5b5730e76c762af9a1390617c

  • SHA256

    229b6c4fa6bf3086364bbb00da7199f5e5c006062b8d986aebc6a68efe28516f

  • SHA512

    ffa59b9145ee118d0dfedf4dd7b6ed364ab43d5347ba8f34d2cbdde09ca318b4f9de89b1ec4933bd0eaa7068bb15bb2bbaed3658d5b5713caf02455eed20ece5

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      229b6c4fa6bf3086364bbb00da7199f5e5c006062b8d986aebc6a68efe28516f

    • Size

      97KB

    • MD5

      4d20335690b8218af519b6a5ff523c94

    • SHA1

      05b23688e15db6b5b5730e76c762af9a1390617c

    • SHA256

      229b6c4fa6bf3086364bbb00da7199f5e5c006062b8d986aebc6a68efe28516f

    • SHA512

      ffa59b9145ee118d0dfedf4dd7b6ed364ab43d5347ba8f34d2cbdde09ca318b4f9de89b1ec4933bd0eaa7068bb15bb2bbaed3658d5b5713caf02455eed20ece5

    • Tofsee

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

    • Windows security bypass

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks