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General

  • Target

    file

  • Size

    247KB

  • Sample

    231012-q3rm2aeg25

  • MD5

    db0915efc5df3cca31e05b8b3ac0f5ee

  • SHA1

    6d25d1ba8cc8716b6c9f40d6fc998b174418c2bb

  • SHA256

    344cdf9460d4d63a1cd728f6edaaf15cdbd540058dc8cb5a48a059a380fe21a4

  • SHA512

    86126487cd2d78a82e284922eb187280123506d5c9a875c1178f5b35e28784d72507baefcb662061eb20b4ff8633634dd47f251bf93e46707981d91814d55433

  • SSDEEP

    3072:ufniykEWHMXNrACbZ6rDLrBoVDf78BOIKWwtY1:ekEWH+JDbZ6SIOOwt

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      247KB

    • MD5

      db0915efc5df3cca31e05b8b3ac0f5ee

    • SHA1

      6d25d1ba8cc8716b6c9f40d6fc998b174418c2bb

    • SHA256

      344cdf9460d4d63a1cd728f6edaaf15cdbd540058dc8cb5a48a059a380fe21a4

    • SHA512

      86126487cd2d78a82e284922eb187280123506d5c9a875c1178f5b35e28784d72507baefcb662061eb20b4ff8633634dd47f251bf93e46707981d91814d55433

    • SSDEEP

      3072:ufniykEWHMXNrACbZ6rDLrBoVDf78BOIKWwtY1:ekEWH+JDbZ6SIOOwt

    • 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 v15

Tasks