General

  • Target

    100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37

  • Size

    316KB

  • Sample

    220604-qxz28adgbj

  • MD5

    5c3ecbbd07a3a9ea27ab0bddb1a6176d

  • SHA1

    171a1e5ad3fb212af8e30d73a70338c319b4f346

  • SHA256

    100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37

  • SHA512

    0a09c1313c03249c72f19ffe84cb5c3758b9f1394f82aaac24f969009e21b5647cf9af3b3f35703a27c8496427692a8c715c72ac3bd9f918f7cb6ccf21dc8465

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37

    • Size

      316KB

    • MD5

      5c3ecbbd07a3a9ea27ab0bddb1a6176d

    • SHA1

      171a1e5ad3fb212af8e30d73a70338c319b4f346

    • SHA256

      100d8852de93e54659c2e9da519cab6934f488bf4c959889f978e49c8ba59e37

    • SHA512

      0a09c1313c03249c72f19ffe84cb5c3758b9f1394f82aaac24f969009e21b5647cf9af3b3f35703a27c8496427692a8c715c72ac3bd9f918f7cb6ccf21dc8465

    • Tofsee

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

    • Windows security bypass

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks