General
Target

3d09b1338518359bce932c85f293e482c0f300173fff9a15c7f785d03d132a6a

Size

98KB

Sample

220703-e3sdsafbej

Score
10/10
MD5

64d99f54eb2c930bfe3aab70dd462137

SHA1

ec87ef99e4a6080b01e708e0746dae89f704d120

SHA256

3d09b1338518359bce932c85f293e482c0f300173fff9a15c7f785d03d132a6a

SHA512

3c3b1397643347189af74fd470577c840683aa955ce87d2b1ce80d3abafb68629e29b4caaa7318612071ebd2f036e1a835f99da78d9183191e5073b3dd5aeac3

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

3d09b1338518359bce932c85f293e482c0f300173fff9a15c7f785d03d132a6a

MD5

64d99f54eb2c930bfe3aab70dd462137

Filesize

98KB

Score
10/10
SHA1

ec87ef99e4a6080b01e708e0746dae89f704d120

SHA256

3d09b1338518359bce932c85f293e482c0f300173fff9a15c7f785d03d132a6a

SHA512

3c3b1397643347189af74fd470577c840683aa955ce87d2b1ce80d3abafb68629e29b4caaa7318612071ebd2f036e1a835f99da78d9183191e5073b3dd5aeac3

Tags

Signatures

  • Tofsee

    Description

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

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security ToolsModify Registry
  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Checks computer location settings

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Loads dropped DLL

  • Adds Run key to start application

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Collection
    Command and Control
      Credential Access
        Execution
          Exfiltration
            Impact
              Initial Access
                Lateral Movement
                  Privilege Escalation
                    Tasks

                    static1

                    Score
                    N/A

                    behavioral1

                    Score
                    10/10

                    behavioral2

                    Score
                    10/10