General
Target

3f73b53edc186f0fccb07ac7c9bbffb5b22e8625585388661fd7ee4836d84ccc

Size

262KB

Sample

220701-bylhwsgca6

Score
10/10
MD5

f0a0aad635dfaf849e931d305893f282

SHA1

1501b1f501b1ba2d3b42555f8292e32bd9c00268

SHA256

3f73b53edc186f0fccb07ac7c9bbffb5b22e8625585388661fd7ee4836d84ccc

SHA512

26f7773e81fdd30fd86cac6b6ded11333f1f95cc1a7d8301d535a1ead16cda38368c96a5fee0fa927197118458a57b442ddf446ce7fe0f1531f3c3b50e2ac96f

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

3f73b53edc186f0fccb07ac7c9bbffb5b22e8625585388661fd7ee4836d84ccc

MD5

f0a0aad635dfaf849e931d305893f282

Filesize

262KB

Score
10/10
SHA1

1501b1f501b1ba2d3b42555f8292e32bd9c00268

SHA256

3f73b53edc186f0fccb07ac7c9bbffb5b22e8625585388661fd7ee4836d84ccc

SHA512

26f7773e81fdd30fd86cac6b6ded11333f1f95cc1a7d8301d535a1ead16cda38368c96a5fee0fa927197118458a57b442ddf446ce7fe0f1531f3c3b50e2ac96f

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
  • Deletes itself

  • 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