General

  • Target

    file

  • Size

    274KB

  • Sample

    231009-kk87gadg67

  • MD5

    5c35f8f54a25a18450a925821a7f4ba6

  • SHA1

    5432db03a23af857350e3c70064ead8f68f33e20

  • SHA256

    88dea8a4856d30c952faf8bde72411e6152458f6c563abaf5d7e450cb822fe7a

  • SHA512

    8cda8d37e192804439616c6d515151ca45bba2e3f2ade7904b81663780a1554853101f08bb7f8407cca087993bf05500d415fbfaaddf6b85fd35848d1b3b4bbe

  • SSDEEP

    3072:0jXOHVwPBAI9BvDXcm0m+ND1A38jYsE05qU3i6wU+4l8QU:SXOiPr9BrXcDND+38ssE05qU3i6nZ8Q

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      274KB

    • MD5

      5c35f8f54a25a18450a925821a7f4ba6

    • SHA1

      5432db03a23af857350e3c70064ead8f68f33e20

    • SHA256

      88dea8a4856d30c952faf8bde72411e6152458f6c563abaf5d7e450cb822fe7a

    • SHA512

      8cda8d37e192804439616c6d515151ca45bba2e3f2ade7904b81663780a1554853101f08bb7f8407cca087993bf05500d415fbfaaddf6b85fd35848d1b3b4bbe

    • SSDEEP

      3072:0jXOHVwPBAI9BvDXcm0m+ND1A38jYsE05qU3i6wU+4l8QU:SXOiPr9BrXcDND+38ssE05qU3i6nZ8Q

    • 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)

    • 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