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General

  • Target

    file.exe

  • Size

    295KB

  • Sample

    230807-e4tcgade66

  • MD5

    d23526d5cd20f9798f82ef630510838c

  • SHA1

    531bac0c65fd2209651295dab9e71085f3e2950d

  • SHA256

    81841275b53476b892ba3da736e05c01392b7f79f6fbb679fbb344f1433cc11e

  • SHA512

    d49de33f3b81280d5bf0bc429e9508438de71dec43deb995956d684131df724017c152e2e27b8983dc5c6c7a6d440f1bc86bc80c1c0e9d2aa22ab79019b2e0b5

  • SSDEEP

    3072:NoN2WdiJsjnhu+snkoBgaUCeboSuZXuPPdhVCe2TJXweU5VeNzGZ:qNWUnhuntvUISeEPNAJXweQVe4

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      295KB

    • MD5

      d23526d5cd20f9798f82ef630510838c

    • SHA1

      531bac0c65fd2209651295dab9e71085f3e2950d

    • SHA256

      81841275b53476b892ba3da736e05c01392b7f79f6fbb679fbb344f1433cc11e

    • SHA512

      d49de33f3b81280d5bf0bc429e9508438de71dec43deb995956d684131df724017c152e2e27b8983dc5c6c7a6d440f1bc86bc80c1c0e9d2aa22ab79019b2e0b5

    • SSDEEP

      3072:NoN2WdiJsjnhu+snkoBgaUCeboSuZXuPPdhVCe2TJXweU5VeNzGZ:qNWUnhuntvUISeEPNAJXweQVe4

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • 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

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks