General

  • Target

    f97ac5a687cc94db960df62fb910a74a.zip

  • Size

    176KB

  • Sample

    240903-l7zrzsterk

  • MD5

    d3e32959c427fd4282418a95abd4b997

  • SHA1

    0fb21e3ddbdc058c36e4978a20d0c1845599e56b

  • SHA256

    a21cf982259a4e11dae815314ca1f22ab6bf0b8741da75484483708a7a5653e1

  • SHA512

    f892553f7405e9863ed3799e75ea5a9a76810ea09ee98964ea94898765b5563573d028aa1ecce735a6a2f1f05194b223cd2af7f06dab2cff06e1332070bcc344

  • SSDEEP

    3072:Kwadi6k0Bg8+4r2zITLDhaewPeOQIiPXMuC0KeNp8vIrS8rUQ5KcSP1h2kaJ:KjiH07foITLUGOQI9uZNpQxs5vi4kq

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Targets

    • Target

      00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954

    • Size

      11.6MB

    • MD5

      f97ac5a687cc94db960df62fb910a74a

    • SHA1

      24b5c7775506327081ea3ed0093c62d938dd50e4

    • SHA256

      00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954

    • SHA512

      ab81fd40d42ad8dd102b48906d5fba078360001cb300743b8e90849bc38d22f40302b6e26ee5d45f0b6bf1bd082e0293adee78ed3e21668c3c55b014d9746c0b

    • SSDEEP

      196608:QPHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:Q

    • Tofsee

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

    • Windows security bypass

    • Creates new service(s)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks