General

  • Target

    c59728790fb937ef17a9f0084f354f003ebf0ac776188dc0dc7e35908f96cb66

  • Size

    160KB

  • Sample

    240417-rj18ssbd35

  • MD5

    f595f0787426fc6982bfd79fc7de073f

  • SHA1

    5c097a86360c17b8b2e531754647323725376827

  • SHA256

    c59728790fb937ef17a9f0084f354f003ebf0ac776188dc0dc7e35908f96cb66

  • SHA512

    e39d75e0b7027501bb7874c81635412420cb26bc0a206a331834e687c3386920943814c81fdcd32688a5f5c69d032b878111d9f2857bcbd3d9374de7af06ccf6

  • SSDEEP

    3072:7mv4RvwlRSipqq1/3B+xi2lCFil5WTiApnJqHJRrrV53KRgaKhlVNUdV0g6:9iRtQSRv2lCFi3P3BKR2h9zg6

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      aedba5939122af54e928bc355fbd3ffce10cc95f8d7efd007b8f9960d3c0cfe5.exe

    • Size

      256KB

    • MD5

      11d6fdab8ce0a4462699d12d8cc6e181

    • SHA1

      f79dd773636fb0c46346f08e9a36bea666e34350

    • SHA256

      aedba5939122af54e928bc355fbd3ffce10cc95f8d7efd007b8f9960d3c0cfe5

    • SHA512

      dd582a962bc9d3c50782a528a1c635d065530b96f7e1325d0c254f299b10b29218a8626b15f18b11aaf234b7393cea39d8025fa8d023fa9e79bdbdce2d6478a6

    • SSDEEP

      3072:DlrJL/wyRvNQG+FiOf5hqBNDo0Rpv01b8FbuW5hL4WeNH601:D3L/wUkFiOf5Ybon1gL4WeNa

    • 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