General

  • Target

    file.exe

  • Size

    319KB

  • Sample

    230504-m188hsdf4v

  • MD5

    fe0447a7d3da51ecc9bca3a1fae3f57b

  • SHA1

    2f59f1be792d9522ca337f45bda87f6a89758d1a

  • SHA256

    ae6bd7a2bfc9056b62e8ed38a36db8d67c72821b6d3e86bfa1153ff5d7498b0e

  • SHA512

    4eb744f823e2757b831d50a665f12ade8b30a317226dfd5a69bdf87c66391f9c71d87ef28cc32a71447110262b14c556635b25d863dd596936df1b53f60a2790

  • SSDEEP

    3072:ODMOZg29W5FRk75YqJbSNgktBN+CqYO5RirZh5Rn4UmxXAV9x/ht:QMOtu3kyqJ2tvqz4D4ZxXAjt

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      319KB

    • MD5

      fe0447a7d3da51ecc9bca3a1fae3f57b

    • SHA1

      2f59f1be792d9522ca337f45bda87f6a89758d1a

    • SHA256

      ae6bd7a2bfc9056b62e8ed38a36db8d67c72821b6d3e86bfa1153ff5d7498b0e

    • SHA512

      4eb744f823e2757b831d50a665f12ade8b30a317226dfd5a69bdf87c66391f9c71d87ef28cc32a71447110262b14c556635b25d863dd596936df1b53f60a2790

    • SSDEEP

      3072:ODMOZg29W5FRk75YqJbSNgktBN+CqYO5RirZh5Rn4UmxXAV9x/ht:QMOtu3kyqJ2tvqz4D4ZxXAjt

    • 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 v6

Tasks