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General

  • Target

    file.exe

  • Size

    327KB

  • Sample

    230110-aea3dagc42

  • MD5

    c620bc5dee44c490218d77b51a8da747

  • SHA1

    947e939b56984aac0f15afe93e091f0bff74d5a1

  • SHA256

    69e4bc4640c7e9cc9f00c3044c3ec548bbafd8034ee93f53308c935df8e7e651

  • SHA512

    05f9d601f1035ceb160d0774ebdfb9485cf1e399985a4be95ac35f980d39564299448c8016232af5e1c32bf6c57f68820dd6294ebd84e38e6e01fb0ba5c08521

  • SSDEEP

    6144:aIPlkzB13tpPtg4F4qIozg+7dBA0X+JY:aItA391tg4FCocIu

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      327KB

    • MD5

      c620bc5dee44c490218d77b51a8da747

    • SHA1

      947e939b56984aac0f15afe93e091f0bff74d5a1

    • SHA256

      69e4bc4640c7e9cc9f00c3044c3ec548bbafd8034ee93f53308c935df8e7e651

    • SHA512

      05f9d601f1035ceb160d0774ebdfb9485cf1e399985a4be95ac35f980d39564299448c8016232af5e1c32bf6c57f68820dd6294ebd84e38e6e01fb0ba5c08521

    • SSDEEP

      6144:aIPlkzB13tpPtg4F4qIozg+7dBA0X+JY:aItA391tg4FCocIu

    • 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