Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2024, 02:47

General

  • Target
    fbc2c420abf78cac67f0ad1b699d498a_JaffaCakes118.exe
  • Size 398KB
  • Sample240420-daa4csfd2v
  • SHA256 ac4b37a2facba94ee05030e6ef3a0898b6078a96bbb798ae9c1e6d075827beb2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 8 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fbc2c420abf78cac67f0ad1b699d498a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fbc2c420abf78cac67f0ad1b699d498a_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4476
    • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\cb.exe
      "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\cb.exe"
      2⤵
      • Executes dropped EXE
      PID:1016
    • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\1EuroP.exe
      "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\1EuroP.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4872
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /q /c "C:\Users\Admin\AppData\Local\Temp\Dfb..bat" > nul 2> nul
        3⤵
          PID:4040
      • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\2IC.exe
        "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\2IC.exe"
        2⤵
        • Executes dropped EXE
        PID:4556
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 476
          3⤵
          • Program crash
          PID:2304
      • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\3E4U - Bucks.exe
        "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\3E4U - Bucks.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1048
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\3E4U-B~1.EXE > nul
          3⤵
            PID:1468
        • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\6tbp.exe
          "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\6tbp.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4180
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe "C:\Users\Admin\AppData\Local\debd140.dll",Startup
            3⤵
            • Loads dropped DLL
            • Adds Run key to start application
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4628
            • C:\Windows\SysWOW64\rundll32.exe
              rundll32.exe "C:\Users\Admin\AppData\Local\debd140.dll",iep
              4⤵
              • Loads dropped DLL
              • Suspicious use of SetWindowsHookEx
              PID:2648
        • C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\IR.exe
          "C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\IR.exe"
          2⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1524
          • C:\Windows\SysWOW64\net.exe
            net.exe stop "Security Center"
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2856
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Security Center"
              4⤵
                PID:60
            • C:\Windows\SysWOW64\sc.exe
              sc config wscsvc start= DISABLED
              3⤵
              • Launches sc.exe
              PID:2684
            • C:\Windows\SysWOW64\net.exe
              net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:2236
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
                4⤵
                  PID:4888
              • C:\Windows\SysWOW64\sc.exe
                sc config SharedAccess start= DISABLED
                3⤵
                • Launches sc.exe
                PID:3880
              • C:\Users\Admin\AppData\Roaming\7bsxzxl.exe
                C:\Users\Admin\AppData\Roaming\7bsxzxl.exe
                3⤵
                • Drops file in Drivers directory
                • Executes dropped EXE
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:4532
                • C:\Users\Admin\AppData\Roaming\7bsxzxl.exe
                  C:\Users\Admin\AppData\Roaming\7bsxzxl.exe -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
                  4⤵
                  • Executes dropped EXE
                  • Suspicious use of SetWindowsHookEx
                  PID:5004
              • C:\Windows\SysWOW64\Rundll32.exe
                Rundll32.exe setupapi,InstallHinfSection DefaultInstall 128 C:\Users\Admin\AppData\Roaming\mdinstall.inf
                3⤵
                • Adds Run key to start application
                • Suspicious use of WriteProcessMemory
                PID:3124
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  4⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:4464
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    5⤵
                      PID:3640
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\1t81u4bzz.bat
                  3⤵
                    PID:4084
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4556 -ip 4556
                1⤵
                  PID:5012

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      Dfb..bat

                      • Path C:\Users\Admin\AppData\Local\Temp\Dfb..bat
                      • Size 182B
                      • SHA256 9c88a32285778a499c48fcb241dc5de915e44e3752d11e2f92eab1d26fbaab89
                      • MD5 SHA1 SHA512

                      1EuroP.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\1EuroP.exe
                      • Size 75KB
                      • SHA256 40abf4fe2142f94b0a9b6ebf933423b47a975b4b6a67332545e9dc7afcfbd1e2
                      • MD5 SHA1 SHA512 SSDEEP

                      2IC.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\2IC.exe
                      • Size 168KB
                      • SHA256 28e120376e926940dc45f8cc2f9193457bf8b89671901453d30e996ca617a29a
                      • MD5 SHA1 SHA512 SSDEEP

                      3E4U - Bucks.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\3E4U - Bucks.exe
                      • Size 29KB
                      • SHA256 e5775cc832c611d33bae42484d318e62b374fcf8786f11d5ae8087e5fb6d011f
                      • MD5 SHA1 SHA512 SSDEEP

                      6tbp.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\6tbp.exe
                      • Size 112KB
                      • SHA256 7ff56015fd3fe7ccec00eb198318d8647c0c3386974f1889abc632a55ceafa80
                      • MD5 SHA1 SHA512 SSDEEP

                      IR.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\IR.exe
                      • Size 61KB
                      • SHA256 cd964af4e62c9007c4aaedd9ccab5cf84a78b51e11332ded2b591c81b23872d6
                      • MD5 SHA1 SHA512 SSDEEP

                      cb.exe

                      • Path C:\Users\Admin\AppData\Local\Temp\nsw320E.tmp\cb.exe
                      • Size 3KB
                      • SHA256 bd7ca609d2fb63e14d08acab1091579c23e298b4fa2ac1e8d2daaff94fc107be
                      • MD5 SHA1 SHA512

                      debd140.dll

                      • Path C:\Users\Admin\AppData\Local\debd140.dll
                      • Size 112KB
                      • SHA256 0fff9ca615a9371402721e8b3a4c99ef846bff7e5e663b764660edae138f5fa7
                      • MD5 SHA1 SHA512 SSDEEP

                      1t81u4bzz.bat

                      • Path C:\Users\Admin\AppData\Roaming\1t81u4bzz.bat
                      • Size 154B
                      • SHA256 c67be55b949b9133e35150a729d9b6515145d1db872ebb2a22f8e6fa18e0d4d0
                      • MD5 SHA1 SHA512

                      mdinstall.inf

                      • Path C:\Users\Admin\AppData\Roaming\mdinstall.inf
                      • Size 410B
                      • SHA256 5d96bec9bc06fd8d7abc11efbb3cb263844ee0416910f63581dd7848b4e1d8dd
                      • MD5 SHA1 SHA512

                      memory/1048-63-0x0000000002930000-0x00000000032D0000-memory.dmp

                      memory/1048-71-0x0000000000880000-0x000000000089B000-memory.dmp

                      memory/1524-102-0x0000000000400000-0x0000000000430000-memory.dmp

                      memory/1524-77-0x0000000000400000-0x0000000000430000-memory.dmp

                      memory/2648-130-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/2648-124-0x0000000002410000-0x0000000002420000-memory.dmp

                      memory/2648-123-0x0000000002410000-0x0000000002420000-memory.dmp

                      memory/2648-135-0x0000000002410000-0x0000000002420000-memory.dmp

                      memory/2648-136-0x0000000002410000-0x0000000002420000-memory.dmp

                      memory/4180-64-0x00000000021F0000-0x0000000002200000-memory.dmp

                      memory/4180-62-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4180-112-0x00000000021F0000-0x0000000002200000-memory.dmp

                      memory/4180-75-0x00000000021F0000-0x0000000002200000-memory.dmp

                      memory/4180-108-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4532-110-0x0000000000400000-0x0000000000430000-memory.dmp

                      memory/4532-145-0x0000000000400000-0x0000000000430000-memory.dmp

                      memory/4628-113-0x00000000027F0000-0x0000000002800000-memory.dmp

                      memory/4628-81-0x00000000027F0000-0x0000000002800000-memory.dmp

                      memory/4628-79-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4628-82-0x00000000027F0000-0x0000000002800000-memory.dmp

                      memory/4628-109-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4628-114-0x00000000027F0000-0x0000000002800000-memory.dmp

                      memory/4628-122-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4628-127-0x0000000010000000-0x000000001001C000-memory.dmp

                      memory/4872-85-0x00000000005B0000-0x00000000005B1000-memory.dmp

                      memory/4872-84-0x00000000005B0000-0x00000000005B1000-memory.dmp

                      memory/4872-88-0x0000000000400000-0x000000000041A000-memory.dmp

                      memory/4872-40-0x0000000001F60000-0x0000000001F85000-memory.dmp

                      memory/4872-43-0x0000000000400000-0x000000000041A000-memory.dmp

                      memory/5004-111-0x0000000000400000-0x0000000000430000-memory.dmp

                      memory/5004-141-0x0000000000400000-0x0000000000430000-memory.dmp