Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 02:12

General

  • Target
    812723d3e69a8a9543dd2ebeff8a7fa5_JaffaCakes118.exe
  • Size 237KB
  • Sample241031-cm98jsxdql
  • SHA256 1ab4bda709b6dec9b2d4df647e0d4372b1aa9a712b65a32fcc33642005d57e08
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Disables service(s) 3 TTPs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Launches sc.exe 2 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 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 16 IoCs

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

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\812723d3e69a8a9543dd2ebeff8a7fa5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\812723d3e69a8a9543dd2ebeff8a7fa5_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3212
    • C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\cb.exe
      "C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\cb.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3696
    • C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\ic9.exe
      "C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\ic9.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1540
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1540 -s 272
        3⤵
        • Program crash
        PID:364
    • C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\EuroP.exe
      "C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\EuroP.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3528
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /q /c "C:\Users\Admin\AppData\Local\Temp\Msj..bat" > nul 2> nul
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2412
    • C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\E4U.exe
      "C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\E4U.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\E4U.exe > nul
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4660
    • C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\Gi.exe
      "C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\Gi.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2984
      • C:\Users\Admin\AppData\Local\Temp\geurge.exe
        C:\Users\Admin\AppData\Local\Temp\geurge.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4764
      • C:\Windows\SysWOW64\net.exe
        net.exe stop "Security Center"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1528
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Security Center"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3216
      • C:\Windows\SysWOW64\sc.exe
        sc config wscsvc start= DISABLED
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:2272
      • C:\Windows\SysWOW64\net.exe
        net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2444
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2760
      • C:\Windows\SysWOW64\sc.exe
        sc config SharedAccess start= DISABLED
        3⤵
        • Launches sc.exe
        • System Location Discovery: System Language Discovery
        PID:1544
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\tujserrew.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3556
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1540 -ip 1540
    1⤵
      PID:3680

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Msj..bat

          • Path C:\Users\Admin\AppData\Local\Temp\Msj..bat
          • Size 180B
          • SHA256 6566bfa7b5d7565bb5cd35e6f2b4b89cb7d687e17c3919aba50caded602f3904
          • MD5 SHA1 SHA512

          E4U.exe

          • Path C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\E4U.exe
          • Size 22KB
          • SHA256 a41df47a6ed0cc26973c4bc1452f7d2e21946157552a5515052dc8642b48743e
          • MD5 SHA1 SHA512 SSDEEP

          EuroP.exe

          • Path C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\EuroP.exe
          • Size 58KB
          • SHA256 acc6f5666df365ac19248f7854ae8d3753e126ab5125975e232e9d7b924523f1
          • MD5 SHA1 SHA512 SSDEEP

          Gi.exe

          • Path C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\Gi.exe
          • Size 72KB
          • SHA256 b34881d5e2d3933dc467ed65bf05dc43fc17dac7d3c30d0cc89b98fbe71dcafa
          • MD5 SHA1 SHA512 SSDEEP

          cb.exe

          • Path C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\cb.exe
          • Size 3KB
          • SHA256 bd7ca609d2fb63e14d08acab1091579c23e298b4fa2ac1e8d2daaff94fc107be
          • MD5 SHA1 SHA512

          ic9.exe

          • Path C:\Users\Admin\AppData\Local\Temp\nsk9F7E.tmp\ic9.exe
          • Size 81KB
          • SHA256 9fb5e5110b4fa98c20c90c6f597a09baaf7c301e417a4d2ac7dcdcf6c19cfea1
          • MD5 SHA1 SHA512 SSDEEP

          tujserrew.bat

          • Path C:\tujserrew.bat
          • Size 130B
          • SHA256 033632928b0c1a737728bb51db824f5fc92c84cbebae99553e8a1f40bd05b8f9
          • MD5 SHA1 SHA512

          memory/1156-64-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/1156-59-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/1156-65-0x0000000000400000-0x0000000000403000-memory.dmp

          memory/2984-58-0x0000000000400000-0x000000000045A000-memory.dmp

          memory/2984-80-0x0000000000400000-0x000000000045A000-memory.dmp

          memory/3528-66-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/3528-67-0x0000000000419000-0x0000000000425000-memory.dmp

          memory/3528-57-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/3528-43-0x0000000000419000-0x0000000000425000-memory.dmp

          memory/4764-73-0x0000000000400000-0x000000000045A000-memory.dmp

          memory/4764-82-0x0000000000400000-0x000000000045A000-memory.dmp