Analysis

  • max time kernel
    145s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-04-2024 19:25

General

  • Target

    f1bdc796ba64b96cd4aaaf20ff3da0cc_JaffaCakes118.exe

  • Size

    13.1MB

  • MD5

    f1bdc796ba64b96cd4aaaf20ff3da0cc

  • SHA1

    3853853e87d469821b136c75f4bc16b09a9c5a2b

  • SHA256

    46c879741fc6d476d4ff3edcd1b33c43c5b6107958925d706dd83fb0b1035f20

  • SHA512

    e6876df269d2c0559484e37b0da780191c45ae3a6b3d48b7dc01002e5a789e696a6fe7b9674e60d90e94bd5214a7ebb2012a3bd39bf381bc79d40aa33b5bf92a

  • SSDEEP

    24576:Vl3YWRibbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbn:

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

  • Tofsee

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

  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f1bdc796ba64b96cd4aaaf20ff3da0cc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f1bdc796ba64b96cd4aaaf20ff3da0cc_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3704
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kbzegtoa\
      2⤵
        PID:2072
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nqagnyrh.exe" C:\Windows\SysWOW64\kbzegtoa\
        2⤵
          PID:4756
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create kbzegtoa binPath= "C:\Windows\SysWOW64\kbzegtoa\nqagnyrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1bdc796ba64b96cd4aaaf20ff3da0cc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:928
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description kbzegtoa "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2320
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start kbzegtoa
          2⤵
          • Launches sc.exe
          PID:4072
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:5072
      • C:\Windows\SysWOW64\kbzegtoa\nqagnyrh.exe
        C:\Windows\SysWOW64\kbzegtoa\nqagnyrh.exe /d"C:\Users\Admin\AppData\Local\Temp\f1bdc796ba64b96cd4aaaf20ff3da0cc_JaffaCakes118.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3492
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:2368

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\nqagnyrh.exe

        Filesize

        14.4MB

        MD5

        4892caf3f563e96ce613252bab7601a6

        SHA1

        50142f382a8c49d509202e7af9bbbf1ec1e7281b

        SHA256

        3bd58a9ae9c819cd1f5fa8b81cca36dbe5181454905b10efb138a170318d411c

        SHA512

        6fe851fcf8ebd34a2ca052bc5de976fe60d6b5fdaf5553653b332fc410af66a4a741b66ff200e67e26c9d7afa89c2c83bc187d64b0d5dae529b777dbfc72528b

      • memory/2368-9-0x00000000004A0000-0x00000000004B5000-memory.dmp

        Filesize

        84KB

      • memory/2368-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

        Filesize

        84KB

      • memory/2368-15-0x00000000004A0000-0x00000000004B5000-memory.dmp

        Filesize

        84KB

      • memory/2368-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

        Filesize

        84KB

      • memory/2368-13-0x00000000004A0000-0x00000000004B5000-memory.dmp

        Filesize

        84KB

      • memory/3492-8-0x0000000000580000-0x0000000000581000-memory.dmp

        Filesize

        4KB

      • memory/3492-7-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/3492-11-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/3704-1-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/3704-6-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/3704-2-0x0000000000590000-0x0000000000591000-memory.dmp

        Filesize

        4KB

      • memory/3704-0-0x0000000000580000-0x0000000000581000-memory.dmp

        Filesize

        4KB