Analysis

  • max time kernel
    147s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2024 06:20

General

  • Target

    f2e10e6ce6156dc38f07293998121415_JaffaCakes118.exe

  • Size

    11.6MB

  • MD5

    f2e10e6ce6156dc38f07293998121415

  • SHA1

    0367b75e7cc5eac8322c18c711144e0b14868e8b

  • SHA256

    5904e1ce6715d90d01f24f33168326b95b1096de8fbb7d4ec670516e1249587a

  • SHA512

    016dcff3b313312297f315be1c10c0bccdf23dee9e2288b4087592e788cf7963575cbdf896dcfdc6745f1d6c298c0f210f436c8bc0e5d6a1fb68150cce97a2ee

  • SSDEEP

    24576:zfARRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR3:z

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).

  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f2e10e6ce6156dc38f07293998121415_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f2e10e6ce6156dc38f07293998121415_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3752
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\thrvxrxj\
      2⤵
        PID:4840
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gpjogfaw.exe" C:\Windows\SysWOW64\thrvxrxj\
        2⤵
          PID:1708
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create thrvxrxj binPath= "C:\Windows\SysWOW64\thrvxrxj\gpjogfaw.exe /d\"C:\Users\Admin\AppData\Local\Temp\f2e10e6ce6156dc38f07293998121415_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3164
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description thrvxrxj "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2840
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start thrvxrxj
          2⤵
          • Launches sc.exe
          PID:3232
        • 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:792
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3752 -s 1044
          2⤵
          • Program crash
          PID:3568
      • C:\Windows\SysWOW64\thrvxrxj\gpjogfaw.exe
        C:\Windows\SysWOW64\thrvxrxj\gpjogfaw.exe /d"C:\Users\Admin\AppData\Local\Temp\f2e10e6ce6156dc38f07293998121415_JaffaCakes118.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3648
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:4044
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 520
          2⤵
          • Program crash
          PID:4796
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3752 -ip 3752
        1⤵
          PID:2256
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3648 -ip 3648
          1⤵
            PID:3112

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            13.1MB

            MD5

            17ad26b4268d073477fe36d767b6d8b9

            SHA1

            82a87453a68446909628c2b6aa12019be23cccc6

            SHA256

            5b6370d4266bae4bd65cca7274bac763e1b01f89103b4fcdf84e308f41719bd6

            SHA512

            7e1b5ba75cf48f8a0b805737afb87b3aac55ff2458a8962f8df4b6aae3b9b9479a21a33d80e348911d95f38c11f8272d1b9778c4f0a1916a7a50786137a7dfcc

          • memory/3648-10-0x0000000002A40000-0x0000000002B40000-memory.dmp

            Filesize

            1024KB

          • memory/3648-14-0x0000000000400000-0x00000000027A8000-memory.dmp

            Filesize

            35.7MB

          • memory/3648-18-0x0000000000400000-0x00000000027A8000-memory.dmp

            Filesize

            35.7MB

          • memory/3752-4-0x0000000000400000-0x00000000027A8000-memory.dmp

            Filesize

            35.7MB

          • memory/3752-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

            Filesize

            76KB

          • memory/3752-7-0x0000000000400000-0x00000000027A8000-memory.dmp

            Filesize

            35.7MB

          • memory/3752-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

            Filesize

            76KB

          • memory/3752-1-0x00000000027F0000-0x00000000028F0000-memory.dmp

            Filesize

            1024KB

          • memory/4044-11-0x00000000012C0000-0x00000000012D5000-memory.dmp

            Filesize

            84KB

          • memory/4044-16-0x00000000012C0000-0x00000000012D5000-memory.dmp

            Filesize

            84KB

          • memory/4044-17-0x00000000012C0000-0x00000000012D5000-memory.dmp

            Filesize

            84KB

          • memory/4044-19-0x00000000012C0000-0x00000000012D5000-memory.dmp

            Filesize

            84KB