General

  • Target

    Trojan.Autorun.ATA_virussign.com_f7ae445081e10267d2cec9b6b0e2d375.exe

  • Size

    399KB

  • Sample

    240907-pjznvsvama

  • MD5

    f7ae445081e10267d2cec9b6b0e2d375

  • SHA1

    e12892ea4d092e4b959617c6d00356ee23da0797

  • SHA256

    569edae4e4c7f5df590c7ee0a96210942e2be22be73beda9bc1528addca234f4

  • SHA512

    194a260edb0ce0d6c9b74484b55d64e8d593c990ca647acf4c24dd4b58abee0e586485fb06970557d83cc97159933b55a9fa3cc9316f52c28d86552aa039ab04

  • SSDEEP

    6144:ztRdHbfGeyTf8CJH1ci6aZRVDqQP4n48rMI8gVzuhZIIQFa0lw:ztRdHbfByTU3OTBtP44cMYW

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      Trojan.Autorun.ATA_virussign.com_f7ae445081e10267d2cec9b6b0e2d375.exe

    • Size

      399KB

    • MD5

      f7ae445081e10267d2cec9b6b0e2d375

    • SHA1

      e12892ea4d092e4b959617c6d00356ee23da0797

    • SHA256

      569edae4e4c7f5df590c7ee0a96210942e2be22be73beda9bc1528addca234f4

    • SHA512

      194a260edb0ce0d6c9b74484b55d64e8d593c990ca647acf4c24dd4b58abee0e586485fb06970557d83cc97159933b55a9fa3cc9316f52c28d86552aa039ab04

    • SSDEEP

      6144:ztRdHbfGeyTf8CJH1ci6aZRVDqQP4n48rMI8gVzuhZIIQFa0lw:ztRdHbfByTU3OTBtP44cMYW

    • 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