General

  • Target

    file

  • Size

    206KB

  • Sample

    230831-ywq2xsac29

  • MD5

    0f9c373964288e253936c6fca66e7c3d

  • SHA1

    89cd1ecf9d256f4ad608ae27ae59d86960078850

  • SHA256

    043f6d52d44dc42b0da11af5b87c27bbaada4c88bacda864f644fbf1731f5404

  • SHA512

    1f534cbb70ac2f95d1170c7c55f0bf2af3244de80ac7d47d395b4b8516fe39a780af06fea9f4f9530c0641b3111ca30d42fcee589687deff825db4a60714f236

  • SSDEEP

    3072:9KLxYvgRbgBeCiMGsIvTN7BW//30MYGOR0Ali8V9Z/8u:9i5RbaeCiVxFB2QN8Ot8

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      206KB

    • MD5

      0f9c373964288e253936c6fca66e7c3d

    • SHA1

      89cd1ecf9d256f4ad608ae27ae59d86960078850

    • SHA256

      043f6d52d44dc42b0da11af5b87c27bbaada4c88bacda864f644fbf1731f5404

    • SHA512

      1f534cbb70ac2f95d1170c7c55f0bf2af3244de80ac7d47d395b4b8516fe39a780af06fea9f4f9530c0641b3111ca30d42fcee589687deff825db4a60714f236

    • SSDEEP

      3072:9KLxYvgRbgBeCiMGsIvTN7BW//30MYGOR0Ali8V9Z/8u:9i5RbaeCiVxFB2QN8Ot8

    • 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