General

  • Target

    file.exe

  • Size

    279KB

  • Sample

    230110-qcm7xsbh4y

  • MD5

    8035036e2b7f2d056604bb52c0030ee4

  • SHA1

    54739d3b71f885b767fcc8df3fa5e99ff0952371

  • SHA256

    2fe625f45a287a8c2e5745ee7f99c4b6855914a8d626de839019f799b04b6cf1

  • SHA512

    2034bebf0fab10d2a417ce7df75b221c250ac6e2e0c960ec33e61f4dd09c2d5686c8640430df1e193d7a096778375a12f69e18ecc5ee36f2ae349190f85472d5

  • SSDEEP

    6144:3JnraEMLPVG7ip96jtQhmceobH8SMVAe9/IQnEmQLr:3lraEMM7iLYQH8SwAWbE7

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      279KB

    • MD5

      8035036e2b7f2d056604bb52c0030ee4

    • SHA1

      54739d3b71f885b767fcc8df3fa5e99ff0952371

    • SHA256

      2fe625f45a287a8c2e5745ee7f99c4b6855914a8d626de839019f799b04b6cf1

    • SHA512

      2034bebf0fab10d2a417ce7df75b221c250ac6e2e0c960ec33e61f4dd09c2d5686c8640430df1e193d7a096778375a12f69e18ecc5ee36f2ae349190f85472d5

    • SSDEEP

      6144:3JnraEMLPVG7ip96jtQhmceobH8SMVAe9/IQnEmQLr:3lraEMM7iLYQH8SwAWbE7

    • 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