General

  • Target

    file

  • Size

    317KB

  • Sample

    230504-2wvxnahd6t

  • MD5

    a287377cc831c829ac4f1f039a9691b0

  • SHA1

    43c5dff1710c27f71fa53c77d5c53d55d211e974

  • SHA256

    4416e4a4b101caee2b4e13d32e46d99c5c0458f62a8f095680a6df135dcb9bfb

  • SHA512

    982aa1db607c134014e9e5a945172aa0bb4ba0e1fa9d9d062d4b58738d9fe7a9314fe9bd5207832b0bd7af78200e9dcaeff49e494c80745200f5b705292b5ae6

  • SSDEEP

    3072:T8fNxIhB7bkD8Oh/UL8crUiFwfNpkj+ym/465NgPeN9oD5h9y4UHHOx//t:QahkD8OxUL9rUIsXy84U+PevS9FC8t

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      317KB

    • MD5

      a287377cc831c829ac4f1f039a9691b0

    • SHA1

      43c5dff1710c27f71fa53c77d5c53d55d211e974

    • SHA256

      4416e4a4b101caee2b4e13d32e46d99c5c0458f62a8f095680a6df135dcb9bfb

    • SHA512

      982aa1db607c134014e9e5a945172aa0bb4ba0e1fa9d9d062d4b58738d9fe7a9314fe9bd5207832b0bd7af78200e9dcaeff49e494c80745200f5b705292b5ae6

    • SSDEEP

      3072:T8fNxIhB7bkD8Oh/UL8crUiFwfNpkj+ym/465NgPeN9oD5h9y4UHHOx//t:QahkD8OxUL9rUIsXy84U+PevS9FC8t

    • Tofsee

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

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks