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General

  • Target

    file.exe

  • Size

    357KB

  • Sample

    230210-mv42lsca86

  • MD5

    88d3588e92f5c5f99a2e036252a9d281

  • SHA1

    1ed1ce7b4cb75db17e90efd41349754113648fe0

  • SHA256

    92afdac37111654925657288e25740c7291896b233c012e41ecd23e81b53dee4

  • SHA512

    0b3e93cd59bb5fc8fe6fffe11c35e34fb0bb77bf1af10ce199c53715c09385b5f5b046b625bb6c1f4a0f7109030d5968fc128346de682d22827893e03d1c6131

  • SSDEEP

    3072:0wHqb7eKdaMaTK8CyR6sb9SuqXZW8Va5tWGYkK/FBRA9nf6Nh382UUf/:pH6tauXsb96p/a5LVK/XR2nfWhsA/

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      357KB

    • MD5

      88d3588e92f5c5f99a2e036252a9d281

    • SHA1

      1ed1ce7b4cb75db17e90efd41349754113648fe0

    • SHA256

      92afdac37111654925657288e25740c7291896b233c012e41ecd23e81b53dee4

    • SHA512

      0b3e93cd59bb5fc8fe6fffe11c35e34fb0bb77bf1af10ce199c53715c09385b5f5b046b625bb6c1f4a0f7109030d5968fc128346de682d22827893e03d1c6131

    • SSDEEP

      3072:0wHqb7eKdaMaTK8CyR6sb9SuqXZW8Va5tWGYkK/FBRA9nf6Nh382UUf/:pH6tauXsb96p/a5LVK/XR2nfWhsA/

    • Tofsee

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

    • Windows security bypass

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks