General

  • Target

    9c9b7260556caeabcb0503f3b105b059b1d7ad78c7efc12d15ba506e7e2c2052_JC.exe

  • Size

    254KB

  • Sample

    230917-sc47jsdd45

  • MD5

    8711b0f84531c6aa872bd7b9cbafe866

  • SHA1

    71e860db1fcd61be5c5034c1a6e7f60db822c32b

  • SHA256

    9c9b7260556caeabcb0503f3b105b059b1d7ad78c7efc12d15ba506e7e2c2052

  • SHA512

    236df6134cb8ef922beced452948bf736bd8a3481ab084b76072570357b971c779ef809497293775cb75f98550af52510e87108b161c695df35bac917487e6c3

  • SSDEEP

    3072:geTmM10cMLLQ6vbxXhBjOlUK1Pm2jWyhG4OK8ZzIMxfezD80:MMecMQ6vphBq1NrjWyhrAz/xW

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      9c9b7260556caeabcb0503f3b105b059b1d7ad78c7efc12d15ba506e7e2c2052_JC.exe

    • Size

      254KB

    • MD5

      8711b0f84531c6aa872bd7b9cbafe866

    • SHA1

      71e860db1fcd61be5c5034c1a6e7f60db822c32b

    • SHA256

      9c9b7260556caeabcb0503f3b105b059b1d7ad78c7efc12d15ba506e7e2c2052

    • SHA512

      236df6134cb8ef922beced452948bf736bd8a3481ab084b76072570357b971c779ef809497293775cb75f98550af52510e87108b161c695df35bac917487e6c3

    • SSDEEP

      3072:geTmM10cMLLQ6vbxXhBjOlUK1Pm2jWyhG4OK8ZzIMxfezD80:MMecMQ6vphBq1NrjWyhrAz/xW

    • 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