General

  • Target

    file.exe

  • Size

    304KB

  • Sample

    221219-2vh7gagc84

  • MD5

    8990b4f21245d78cd1fcdbaf6f0561e1

  • SHA1

    de8c27206b12e2b165893cf83a73df2ec4c47b53

  • SHA256

    ad70e9386cbcff9534f6c3f2fc921f1f468f13e40c9b489cec17de81f0401de9

  • SHA512

    9034b6c1fa99482a37dbe915948f05ee431c8b07ffc20956d456fac70cc32fe2e8a39ae725e10d5653000a16da40a0d40dc948de9d19418993acd6c05d1a207a

  • SSDEEP

    3072:A7z8tLu+YG25MX5w/ip0cZxezBUZVMo7DVEmRkwxOP2d+77h+y65/1E3ZJyyjXgJ:CeLGBM+K4upEm2wdwJ63QZImQKG0

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      304KB

    • MD5

      8990b4f21245d78cd1fcdbaf6f0561e1

    • SHA1

      de8c27206b12e2b165893cf83a73df2ec4c47b53

    • SHA256

      ad70e9386cbcff9534f6c3f2fc921f1f468f13e40c9b489cec17de81f0401de9

    • SHA512

      9034b6c1fa99482a37dbe915948f05ee431c8b07ffc20956d456fac70cc32fe2e8a39ae725e10d5653000a16da40a0d40dc948de9d19418993acd6c05d1a207a

    • SSDEEP

      3072:A7z8tLu+YG25MX5w/ip0cZxezBUZVMo7DVEmRkwxOP2d+77h+y65/1E3ZJyyjXgJ:CeLGBM+K4upEm2wdwJ63QZImQKG0

    • 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)

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks