General

  • Target

    file.exe

  • Size

    279KB

  • Sample

    230110-kmklwsfd99

  • MD5

    ee856ba42deb0b2e0f4bff08260d1706

  • SHA1

    b96427c7eb75774e76f8b2426d054e5afd6af370

  • SHA256

    57194874ec0af3b64dd90976aea0034ec7b1ef2ead165b20ad44be412fdf9189

  • SHA512

    8fcb5423438d0ebac584dfee02588900ccc8332529dd40a4ccf81c15ed29607f4983b58d8b9303b24451356d79d0bba1a2a31a77c6847a3d587bd7bfc25c6905

  • SSDEEP

    3072:rGXEpiqruL85SCWfpX05aQVMstiesFeRQAyfWoWHQZe07rCt95o1:C/LNCWfpXboVsF4i/7r/

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      279KB

    • MD5

      ee856ba42deb0b2e0f4bff08260d1706

    • SHA1

      b96427c7eb75774e76f8b2426d054e5afd6af370

    • SHA256

      57194874ec0af3b64dd90976aea0034ec7b1ef2ead165b20ad44be412fdf9189

    • SHA512

      8fcb5423438d0ebac584dfee02588900ccc8332529dd40a4ccf81c15ed29607f4983b58d8b9303b24451356d79d0bba1a2a31a77c6847a3d587bd7bfc25c6905

    • SSDEEP

      3072:rGXEpiqruL85SCWfpX05aQVMstiesFeRQAyfWoWHQZe07rCt95o1:C/LNCWfpXboVsF4i/7r/

    • 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