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General

  • Target

    74acfb30c4959a65e42cce9a97411900.bin

  • Size

    154KB

  • Sample

    230312-btbswseb5t

  • MD5

    d577d001229cc4f08ba415ba15bcac9d

  • SHA1

    9a12a09b8ad620cf19f29a3fa051962e750ed2c2

  • SHA256

    63436bf7e97ff2256bf24049f350f5c101101370ca2ee419ab6a875cf64302d1

  • SHA512

    8a5de79bceee085dbce2df9265f8143fb2716ec475183b04a6b0716d8b64008ee930d6a4f9c7a58808f3fd9810d84713862a0a4efa81655ae23c9120e20db81c

  • SSDEEP

    3072:o543WRiCGvMnaUIKC95lVRAlMHHdtXnze5utBgf62IB6REE:o5aDZMPMlvndAiBKvGNE

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      c9b4a44e5db5ef9216c69411aa44218c8b1a8860c773fa96991dc30b7ded218b.exe

    • Size

      256KB

    • MD5

      74acfb30c4959a65e42cce9a97411900

    • SHA1

      2dd172d565be99baafb81d3b7f2890a476ec110d

    • SHA256

      c9b4a44e5db5ef9216c69411aa44218c8b1a8860c773fa96991dc30b7ded218b

    • SHA512

      e59c4e0f4e614bcae0337de0f70b1056a4b57c9791d4248ab12bf59989a0199db081b7b9ce8a26ba1957518ef1dd5e7050b77e96a3010d49546b8881d7afddd8

    • SSDEEP

      3072:44CMrJO29U37A+fyvKFmxA5tQoA3qjlEBod/HN3pjAXPSQo:lfJzUrA+fyvKb5tQoA3qREBOfj

    • 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