General

  • Target

    NEAS.a024dc3f72c20bbc40fadda609ea7589f757f3078022d990878d09e2ad7b0c11.exe

  • Size

    252KB

  • Sample

    231106-3b6dbsgc2z

  • MD5

    3daff0208eb4ec8e45c0d84c90b959b8

  • SHA1

    5cfca7fd7003e8a8e25dbdebff2a0113a4c44d4b

  • SHA256

    a024dc3f72c20bbc40fadda609ea7589f757f3078022d990878d09e2ad7b0c11

  • SHA512

    594a8c7c3b7dea0d669684171a6e228ae80e9e0aa426b3c550c855ec8edf43e4f4dcfa2955099c3bc07f6244cf500f85fde8473a2210f968f3aa913609292453

  • SSDEEP

    6144:eAdQSLr8EGVwrXM9d3AX09WKVLsH26gI:oSHRGVwrXM9d3v9WKVgW4

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      NEAS.a024dc3f72c20bbc40fadda609ea7589f757f3078022d990878d09e2ad7b0c11.exe

    • Size

      252KB

    • MD5

      3daff0208eb4ec8e45c0d84c90b959b8

    • SHA1

      5cfca7fd7003e8a8e25dbdebff2a0113a4c44d4b

    • SHA256

      a024dc3f72c20bbc40fadda609ea7589f757f3078022d990878d09e2ad7b0c11

    • SHA512

      594a8c7c3b7dea0d669684171a6e228ae80e9e0aa426b3c550c855ec8edf43e4f4dcfa2955099c3bc07f6244cf500f85fde8473a2210f968f3aa913609292453

    • SSDEEP

      6144:eAdQSLr8EGVwrXM9d3AX09WKVLsH26gI:oSHRGVwrXM9d3v9WKVgW4

    • 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