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Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2024, 11:11

General

  • Target

    JaffaCakes118_fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb.exe

  • Size

    271KB

  • MD5

    3f65dae6305ca843e7b9b7df2f74d838

  • SHA1

    2c44df4d74900d500dcf9835f6c80ff84d268a37

  • SHA256

    fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb

  • SHA512

    93d1cd17ec557a46c3ac6b32a08d24ec1c8dd26ad3c5e2fbe7c4a9c7ce7d2ce568913844d18f950d89a05b22ff76b528ae672b5fbcee8e35da41eb49cde43971

  • SSDEEP

    6144:DgfpPeqotkXALxePgCA0+A3Ii4b6gvlVUgJ:kXotkXALQvAi94+g7/

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

  • Tofsee

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

  • Tofsee family
  • Creates new service(s) 2 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\skephca\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4984
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ndddsjph.exe" C:\Windows\SysWOW64\skephca\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3988
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create skephca binPath= "C:\Windows\SysWOW64\skephca\ndddsjph.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:208
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description skephca "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2164
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start skephca
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2444
    • 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
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:1428
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 1148
      2⤵
      • Program crash
      PID:964
  • C:\Windows\SysWOW64\skephca\ndddsjph.exe
    C:\Windows\SysWOW64\skephca\ndddsjph.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8ee365ed1f5cae302130b5fd5b3e069f91a1d10c94d53cdf5dd6c1db266afb.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4440
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:532
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 512
      2⤵
      • Program crash
      PID:404
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2024 -ip 2024
    1⤵
      PID:4336
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4440 -ip 4440
      1⤵
        PID:4092

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        12.3MB

        MD5

        8188bf989776865c37e1553a051747e8

        SHA1

        437de994566a5cec29e0204dd6f71a38297a9a32

        SHA256

        fca2ae15229a5d8f5949ac479349b587cd654c162251925a5fe85f152841c435

        SHA512

        bbab2349ae3ac120641cbb27eda541d29c87c234f4956307d6281b4e4cbcb8387088a6f3b967b2eaea27b9ce4e09c29330e7661e34a8fbf30992938e9bfc53b6

      • memory/532-13-0x00000000009A0000-0x00000000009B5000-memory.dmp

        Filesize

        84KB

      • memory/532-15-0x00000000009A0000-0x00000000009B5000-memory.dmp

        Filesize

        84KB

      • memory/532-16-0x00000000009A0000-0x00000000009B5000-memory.dmp

        Filesize

        84KB

      • memory/2024-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2024-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

        Filesize

        1024KB

      • memory/2024-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2024-8-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/2024-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

        Filesize

        76KB

      • memory/2024-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

        Filesize

        76KB

      • memory/4440-11-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/4440-12-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB

      • memory/4440-17-0x0000000000400000-0x0000000000454000-memory.dmp

        Filesize

        336KB