General

  • Target

    file.exe

  • Size

    261KB

  • Sample

    221029-lpw85sbag8

  • MD5

    d05bfb73d5ac78043e5bc9de2b7e55fd

  • SHA1

    1f9475a862e5a9aa9457a7e5016d5ea354c3394c

  • SHA256

    f0cd32e03ff07b9fb4c97680498e77e0088c0072067b8ad575551dae93b872a3

  • SHA512

    2d9c24bb2171904176cd95840968beb8af8a770f7f43157c8df6d19f8df1c50fb0e4b1fe140efc27cfa794a587861d19e09cf43677ed20a70003d6e50828c72e

  • SSDEEP

    3072:sHO0LBVK4Ltszmy3V5tHUfhSYDB+3J8FFAY1NpoZ6OHkxwTFlTFOhM/h3:CLBs4LtymHfnksXpoZjHcwTF5FOh

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      261KB

    • MD5

      d05bfb73d5ac78043e5bc9de2b7e55fd

    • SHA1

      1f9475a862e5a9aa9457a7e5016d5ea354c3394c

    • SHA256

      f0cd32e03ff07b9fb4c97680498e77e0088c0072067b8ad575551dae93b872a3

    • SHA512

      2d9c24bb2171904176cd95840968beb8af8a770f7f43157c8df6d19f8df1c50fb0e4b1fe140efc27cfa794a587861d19e09cf43677ed20a70003d6e50828c72e

    • SSDEEP

      3072:sHO0LBVK4Ltszmy3V5tHUfhSYDB+3J8FFAY1NpoZ6OHkxwTFlTFOhM/h3:CLBs4LtymHfnksXpoZjHcwTF5FOh

    • 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