Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 12:24

General

  • Target

    8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe

  • Size

    287KB

  • MD5

    8b781b88987500ec50c623ccf8aa6a8a

  • SHA1

    857882d0763580b23e64e1f3e4f7eb7bd9173b5b

  • SHA256

    c9ce74a6fde17c62cff139a74cb86d26c53196d0712a3ae677fa74910b34047b

  • SHA512

    d5f730c21bb733beb4230d006b2cb39a2a560598c08832ab6510a600eb80371cc72d05a3f45f5131a54faa8346916ac49c4f1963c17dc4eecf2de786308ac2cb

  • SSDEEP

    6144:8wkmQ1kUgOdYL9yOPoeA8rFXj77QWldyQG1/e:PrXyYL9yOPk8rFT70WY

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\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qxvoqkwm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2392
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ilemkmue.exe" C:\Windows\SysWOW64\qxvoqkwm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4008
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qxvoqkwm binPath= "C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe /d\"C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4356
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qxvoqkwm "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3464
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qxvoqkwm
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:464
    • 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:2932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1224
      2⤵
      • Program crash
      PID:3428
  • C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe
    C:\Windows\SysWOW64\qxvoqkwm\ilemkmue.exe /d"C:\Users\Admin\AppData\Local\Temp\8b781b88987500ec50c623ccf8aa6a8a_JaffaCakes118.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:224
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4788
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 560
      2⤵
      • Program crash
      PID:3004
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1492 -ip 1492
    1⤵
      PID:2396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 224 -ip 224
      1⤵
        PID:4440

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.9MB

        MD5

        1af794be6a4b5c9b0b82c49fd6952efe

        SHA1

        b60b8316c37591e395531fc737304c6ce4028e77

        SHA256

        807823181bccca5299feabb4197710cd1d6ca412c4b327ff8ed8c61cb8a6ef5c

        SHA512

        5a1b379baebbd805e19fc759a9c61cb9d9f7b18aa9475c3c6e912aa89ab6b35991656761f462a921a95913089bdcf62aa5c0254d440ba9949b0b40d002c6a047

      • memory/224-15-0x0000000000400000-0x0000000002B90000-memory.dmp

        Filesize

        39.6MB

      • memory/1492-1-0x0000000002DF0000-0x0000000002EF0000-memory.dmp

        Filesize

        1024KB

      • memory/1492-2-0x0000000002D40000-0x0000000002D53000-memory.dmp

        Filesize

        76KB

      • memory/1492-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1492-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1492-9-0x0000000002D40000-0x0000000002D53000-memory.dmp

        Filesize

        76KB

      • memory/1492-8-0x0000000000400000-0x0000000002B90000-memory.dmp

        Filesize

        39.6MB

      • memory/4788-11-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4788-13-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4788-14-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB