General

  • Target

    4336baec00605852af5cc8bd1d16062d9284c49c13a2de7943526d338c2365b7

  • Size

    13.8MB

  • Sample

    240529-k82gjahg9z

  • MD5

    c4582eeb3067dac7496b9bd05783574f

  • SHA1

    a4ece6f28cf4b6e61f478e3a191d5295884517dd

  • SHA256

    4336baec00605852af5cc8bd1d16062d9284c49c13a2de7943526d338c2365b7

  • SHA512

    b7381c4fef6e628ceb678213d5fbb6adbe68b0b81b3e88ab736db704e690cee6286dfec0a28187cc853964e8d6efaf178e78018c871df6826d0a3eda6790c18a

  • SSDEEP

    24576:88ZMAyYW////////////////////////////////////////////////////////:TZa

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      4336baec00605852af5cc8bd1d16062d9284c49c13a2de7943526d338c2365b7

    • Size

      13.8MB

    • MD5

      c4582eeb3067dac7496b9bd05783574f

    • SHA1

      a4ece6f28cf4b6e61f478e3a191d5295884517dd

    • SHA256

      4336baec00605852af5cc8bd1d16062d9284c49c13a2de7943526d338c2365b7

    • SHA512

      b7381c4fef6e628ceb678213d5fbb6adbe68b0b81b3e88ab736db704e690cee6286dfec0a28187cc853964e8d6efaf178e78018c871df6826d0a3eda6790c18a

    • SSDEEP

      24576:88ZMAyYW////////////////////////////////////////////////////////:TZa

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks