General

  • Target

    3849de13bd02cc7b8eae8795563a251bfc037c103aa15fa24fd4886b3c9d93bf

  • Size

    177KB

  • Sample

    220604-hbd9mabbh6

  • MD5

    24fea6ad48654a8a682548ee45735f31

  • SHA1

    a2e16028912bf3a2f2d6598c3e8f013084e465bc

  • SHA256

    3849de13bd02cc7b8eae8795563a251bfc037c103aa15fa24fd4886b3c9d93bf

  • SHA512

    930be0100fd10195b86ad10ac9a8d4e577545781088fd46b1b9a3efe46fdd9f4a6d58094499221e89ac2ac2fdad3e24944db267688cc2c1f311a554e172f5835

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      3849de13bd02cc7b8eae8795563a251bfc037c103aa15fa24fd4886b3c9d93bf

    • Size

      177KB

    • MD5

      24fea6ad48654a8a682548ee45735f31

    • SHA1

      a2e16028912bf3a2f2d6598c3e8f013084e465bc

    • SHA256

      3849de13bd02cc7b8eae8795563a251bfc037c103aa15fa24fd4886b3c9d93bf

    • SHA512

      930be0100fd10195b86ad10ac9a8d4e577545781088fd46b1b9a3efe46fdd9f4a6d58094499221e89ac2ac2fdad3e24944db267688cc2c1f311a554e172f5835

    • Tofsee

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

    • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

      suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks