General

  • Target

    file

  • Size

    245KB

  • Sample

    230920-s5dkasbb96

  • MD5

    df15de798e52159e6541c0373445a9c7

  • SHA1

    f6b9c5e494c8385c5d63b2908f7e6d5f540670ee

  • SHA256

    c9fd78bfd543098028bb45708460fe553e498c350aed74a9397061c1cc10d5fd

  • SHA512

    dcf71d349d91879761c32267d685d79765ed20db244c5e235451d2e73ea9731fa72984a6a75eb73e7503f64b38c8ab92c6ecb8f3914d92b11980499e110bb403

  • SSDEEP

    3072:K5gq7QWTvquIQSWJ5uCekqO5A+sgfoucB9hZn7gi:G7QWNFJ5uCHq4nghPh7

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      245KB

    • MD5

      df15de798e52159e6541c0373445a9c7

    • SHA1

      f6b9c5e494c8385c5d63b2908f7e6d5f540670ee

    • SHA256

      c9fd78bfd543098028bb45708460fe553e498c350aed74a9397061c1cc10d5fd

    • SHA512

      dcf71d349d91879761c32267d685d79765ed20db244c5e235451d2e73ea9731fa72984a6a75eb73e7503f64b38c8ab92c6ecb8f3914d92b11980499e110bb403

    • SSDEEP

      3072:K5gq7QWTvquIQSWJ5uCekqO5A+sgfoucB9hZn7gi:G7QWNFJ5uCHq4nghPh7

    • 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 v15

Tasks