General
Target

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

Size

113KB

Sample

220622-kb15haecg3

Score
10/10
MD5

f065237fd3b6c12dae373cf7815a92e8

SHA1

047579f3b675f1cd67e300dc065b129bf63b118f

SHA256

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

SHA512

8462c2a3e8d7873103b7707219485f14d2b5d591f2c276eac90ff0fad91b9bb4cef82766a218e4404739a783e7da45c5fd08ae7450c43d054a4c44064c0a9275

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

MD5

f065237fd3b6c12dae373cf7815a92e8

Filesize

113KB

Score
10/10
SHA1

047579f3b675f1cd67e300dc065b129bf63b118f

SHA256

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

SHA512

8462c2a3e8d7873103b7707219485f14d2b5d591f2c276eac90ff0fad91b9bb4cef82766a218e4404739a783e7da45c5fd08ae7450c43d054a4c44064c0a9275

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