General

  • Target

    390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82

  • Size

    263KB

  • Sample

    230108-kmj1csdb29

  • MD5

    a35ce6fc97aa8fa54afa43808153bf33

  • SHA1

    3285adb85971400d48016ae77e2834646b07691b

  • SHA256

    390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82

  • SHA512

    32f7c0b61ba49438d89aed522898459bf34553f6385d4e394d3a0fcc56c02e589bfec74a927867fc578d7bdceb4eba622183e85c04e38afd19abb39ba85f68bf

  • SSDEEP

    3072:XXhV3FBEGLAF/jJNTvQp58q9ZL+OM/GY/Bs/WCQuLKWFV5iXpxOxqKPhKUZNTKXX:HwGLAFNNTvQnLEnsxQQKwiXtKPhOuN

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82

    • Size

      263KB

    • MD5

      a35ce6fc97aa8fa54afa43808153bf33

    • SHA1

      3285adb85971400d48016ae77e2834646b07691b

    • SHA256

      390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82

    • SHA512

      32f7c0b61ba49438d89aed522898459bf34553f6385d4e394d3a0fcc56c02e589bfec74a927867fc578d7bdceb4eba622183e85c04e38afd19abb39ba85f68bf

    • SSDEEP

      3072:XXhV3FBEGLAF/jJNTvQp58q9ZL+OM/GY/Bs/WCQuLKWFV5iXpxOxqKPhKUZNTKXX:HwGLAFNNTvQnLEnsxQQKwiXtKPhOuN

    • 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)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks