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Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2024, 14:33

General

  • Target

    JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe

  • Size

    188KB

  • MD5

    b8ae14ec90bf47e6f94d942c5718059b

  • SHA1

    fbc2ed4e74385f5e1763cd8fdf3db0b4cd607ae8

  • SHA256

    4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80

  • SHA512

    4d22ec962b2555ac2480ab9d78b4de369602ce2c6b5376a863782d8e0e85e419d67e8e30176ed0e01c76cc0656d1cfa38e3f7d0fd31d0803001e190c17c6ac1f

  • SSDEEP

    3072:97F4NKHBeCklmKGuJveyIh5cLcLLDjaqX+IzYZf6w6Eq:bACklmKTOaqZTssw

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\otyqoflh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wtejhrol.exe" C:\Windows\SysWOW64\otyqoflh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3520
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create otyqoflh binPath= "C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1060
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description otyqoflh "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1036
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start otyqoflh
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1164
    • 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:1488
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4912 -s 1272
      2⤵
      • Program crash
      PID:3244
  • C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe
    C:\Windows\SysWOW64\otyqoflh\wtejhrol.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4a8ff4292376fecbc3a78ec62f84db4cd27ed5f124af777837678c12edda5d80.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3992
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 540
      2⤵
      • Program crash
      PID:1988
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4912 -ip 4912
    1⤵
      PID:2332
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2884 -ip 2884
      1⤵
        PID:2940

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.5MB

        MD5

        66489b24e3a72fe21e21bf6c0b70a428

        SHA1

        f7df90e0b3e11debfb53d3e5c77e070dd47fc96b

        SHA256

        4774900bdf8332cfb64d2e79eb3c27ce85cc02f1e1e842df2af612eb9d2e5b17

        SHA512

        b08d65ce8f116329caa055b312d812f7c49f46ce01ae8f89a8cad43a39b4ceb9121d615c24ab06714bc84dd262bbaf0b199004b7f49655a84d7d162ebe7d49ed

      • memory/2884-17-0x0000000000400000-0x0000000000437000-memory.dmp

        Filesize

        220KB

      • memory/2884-6-0x0000000000400000-0x0000000000437000-memory.dmp

        Filesize

        220KB

      • memory/2884-7-0x0000000000400000-0x0000000000437000-memory.dmp

        Filesize

        220KB

      • memory/3992-11-0x0000000000A20000-0x0000000000A35000-memory.dmp

        Filesize

        84KB

      • memory/3992-20-0x0000000000A20000-0x0000000000A35000-memory.dmp

        Filesize

        84KB

      • memory/3992-8-0x0000000000A20000-0x0000000000A35000-memory.dmp

        Filesize

        84KB

      • memory/3992-19-0x0000000000A20000-0x0000000000A35000-memory.dmp

        Filesize

        84KB

      • memory/3992-18-0x0000000000A20000-0x0000000000A35000-memory.dmp

        Filesize

        84KB

      • memory/4912-15-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4912-13-0x0000000002180000-0x000000000218D000-memory.dmp

        Filesize

        52KB

      • memory/4912-12-0x0000000000400000-0x0000000000437000-memory.dmp

        Filesize

        220KB

      • memory/4912-0-0x0000000002180000-0x000000000218D000-memory.dmp

        Filesize

        52KB

      • memory/4912-14-0x0000000002190000-0x00000000021A3000-memory.dmp

        Filesize

        76KB

      • memory/4912-2-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4912-1-0x0000000002190000-0x00000000021A3000-memory.dmp

        Filesize

        76KB