General
Target

35c35175c681c805e8b12413243324b24573f63533d649f0d88e2b8b58b90182

Size

121KB

Sample

220626-25el2aebcj

Score
10/10
MD5

dccd504e5e44c162e8461ad9ad286ee3

SHA1

e2a68b76db070380809754b7a0fa1cf8a0786f27

SHA256

35c35175c681c805e8b12413243324b24573f63533d649f0d88e2b8b58b90182

SHA512

b52b884420af198361ee650ca61ee9b64463b89469d0d54c8a00c06cdf27ff201ecd6262c3dc3cb959d487c8040e2e3d993f8fc09e8f59bf8c5e74119a69ff04

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

35c35175c681c805e8b12413243324b24573f63533d649f0d88e2b8b58b90182

MD5

dccd504e5e44c162e8461ad9ad286ee3

Filesize

121KB

Score
10/10
SHA1

e2a68b76db070380809754b7a0fa1cf8a0786f27

SHA256

35c35175c681c805e8b12413243324b24573f63533d649f0d88e2b8b58b90182

SHA512

b52b884420af198361ee650ca61ee9b64463b89469d0d54c8a00c06cdf27ff201ecd6262c3dc3cb959d487c8040e2e3d993f8fc09e8f59bf8c5e74119a69ff04

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