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General

  • Target

    file.exe

  • Size

    328KB

  • Sample

    230110-efl89afc3y

  • MD5

    572ad96b85d4a1494c07b82ec6da8270

  • SHA1

    eba8ab6dbb408d103c71702ef4c578fe0283cc26

  • SHA256

    baa9b309139f49ebb0c7effd218f496a66bad7f90535452c28123f29f680687f

  • SHA512

    fe89d310e9895cca6ce1334dd323380bd2419f4f26e80a378b60fb9b3c58c4891a40b83487cb7be0369c6b7ce2c929716e7c161ed75b7de0d1c54ed0a72f5806

  • SSDEEP

    3072:wX3mmPtmv31EAV5HTndH1CgaBr3cYsCi7Il+lD3nVLA7XL7EReBA0X8rFc4CqQJK:klmv+AfTyZrsVCujnV+7dBA0Xo27JY

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      328KB

    • MD5

      572ad96b85d4a1494c07b82ec6da8270

    • SHA1

      eba8ab6dbb408d103c71702ef4c578fe0283cc26

    • SHA256

      baa9b309139f49ebb0c7effd218f496a66bad7f90535452c28123f29f680687f

    • SHA512

      fe89d310e9895cca6ce1334dd323380bd2419f4f26e80a378b60fb9b3c58c4891a40b83487cb7be0369c6b7ce2c929716e7c161ed75b7de0d1c54ed0a72f5806

    • SSDEEP

      3072:wX3mmPtmv31EAV5HTndH1CgaBr3cYsCi7Il+lD3nVLA7XL7EReBA0X8rFc4CqQJK:klmv+AfTyZrsVCujnV+7dBA0Xo27JY

    • 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