General

  • Target

    5494eb3e9916e9f0401ff9c32f223fd97187b93c182b81b054560e27ab339a37

  • Size

    180KB

  • Sample

    220604-nsv7csdgg6

  • MD5

    06350bf2bfe5d6a8a3566f35abca4ef9

  • SHA1

    245fc54afbe349fd4e69d01367771ea3316dc872

  • SHA256

    5494eb3e9916e9f0401ff9c32f223fd97187b93c182b81b054560e27ab339a37

  • SHA512

    e80edb30f626c35072e3027e3fd251ab2837ab15e1481d834cffc60327b7204fd9c15726c23cff915af044e87cb6afea10354e8bb1d253699b8e42af28645814

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      5494eb3e9916e9f0401ff9c32f223fd97187b93c182b81b054560e27ab339a37

    • Size

      180KB

    • MD5

      06350bf2bfe5d6a8a3566f35abca4ef9

    • SHA1

      245fc54afbe349fd4e69d01367771ea3316dc872

    • SHA256

      5494eb3e9916e9f0401ff9c32f223fd97187b93c182b81b054560e27ab339a37

    • SHA512

      e80edb30f626c35072e3027e3fd251ab2837ab15e1481d834cffc60327b7204fd9c15726c23cff915af044e87cb6afea10354e8bb1d253699b8e42af28645814

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

      suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks