General

  • Target

    file.exe

  • Size

    214KB

  • Sample

    221218-jgye5aba25

  • MD5

    895e22225e211ab309f7e14c08024498

  • SHA1

    3a343faca4fcf4bf27322c7109fbba19a5f390c2

  • SHA256

    9f3615bc4f0403c7c3bd0b6ab6128cfe871cb228284922bbef62c5bda8e6caf0

  • SHA512

    beeca24d02de7cbe4db7146c650c42b59ac1a5824d7cad701a87c94845269d623eab78ca71a036fb7192a20f7979a0fc67c4b6beced8d2c56b78cf4d04fd8c26

  • SSDEEP

    3072:fyf2iATLGMZwR9vACR3vUbKQ9VaNnXiyqgjw8/g3xotY33mG3ERWR3LV:qf2vTLGM8YafULaJyyjFg3CtGnU0VB

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      214KB

    • MD5

      895e22225e211ab309f7e14c08024498

    • SHA1

      3a343faca4fcf4bf27322c7109fbba19a5f390c2

    • SHA256

      9f3615bc4f0403c7c3bd0b6ab6128cfe871cb228284922bbef62c5bda8e6caf0

    • SHA512

      beeca24d02de7cbe4db7146c650c42b59ac1a5824d7cad701a87c94845269d623eab78ca71a036fb7192a20f7979a0fc67c4b6beced8d2c56b78cf4d04fd8c26

    • SSDEEP

      3072:fyf2iATLGMZwR9vACR3vUbKQ9VaNnXiyqgjw8/g3xotY33mG3ERWR3LV:qf2vTLGM8YafULaJyyjFg3CtGnU0VB

    • Tofsee

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

    • Windows security bypass

    • xmrig

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

    • XMRig Miner payload

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks