General
Target

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

Size

137KB

Sample

220622-pr1acshba9

Score
10/10
MD5

2ccea0b6d24c740b88eb1ac98db1548f

SHA1

38fc1c6b54b9d0804340d99f9e0c14bd566c4dad

SHA256

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

SHA512

a0b225e1835efd43fb69b2c429da8bef2a30a518ab59940e9d35bab45cc37c1d5817ede5f07b5995ceec2d0d292fb850d736003a8222a43c8214432addce5d0e

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

MD5

2ccea0b6d24c740b88eb1ac98db1548f

Filesize

137KB

Score
10/10
SHA1

38fc1c6b54b9d0804340d99f9e0c14bd566c4dad

SHA256

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

SHA512

a0b225e1835efd43fb69b2c429da8bef2a30a518ab59940e9d35bab45cc37c1d5817ede5f07b5995ceec2d0d292fb850d736003a8222a43c8214432addce5d0e

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