General

  • Target

    file.exe

  • Size

    273KB

  • Sample

    230325-yhhtdseb76

  • MD5

    6cc6e0f96c9436d423167dbeb71da2a7

  • SHA1

    074ffa92fb78dc09b4674e45fad70ce2082eeea3

  • SHA256

    9b8b81e1185334bcf1d2c4a865e631c4b67ecca8d2795a6174cfa8cad721c737

  • SHA512

    f6e97bf800a0436d27a7d059ddb8c6a49828957a3dd39d6ef9ce6c85a3fdab99d8bb035d0ae911f58512fd19c0a2caa4de905286e14529c57f8ff246c43aa0ac

  • SSDEEP

    3072:Ca+zzQ2vCRxuUxAIvKLpnmlKWAkcVgHZLYUlEC2UoXsAEsrTZAbW8dLJf/+yCJQO:moxueinmlF0UlhoXsjoZsW8ddETfz

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      273KB

    • MD5

      6cc6e0f96c9436d423167dbeb71da2a7

    • SHA1

      074ffa92fb78dc09b4674e45fad70ce2082eeea3

    • SHA256

      9b8b81e1185334bcf1d2c4a865e631c4b67ecca8d2795a6174cfa8cad721c737

    • SHA512

      f6e97bf800a0436d27a7d059ddb8c6a49828957a3dd39d6ef9ce6c85a3fdab99d8bb035d0ae911f58512fd19c0a2caa4de905286e14529c57f8ff246c43aa0ac

    • SSDEEP

      3072:Ca+zzQ2vCRxuUxAIvKLpnmlKWAkcVgHZLYUlEC2UoXsAEsrTZAbW8dLJf/+yCJQO:moxueinmlF0UlhoXsjoZsW8ddETfz

    • 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