Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250502-en
  • resource tags

    arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/05/2025, 10:42

General

  • Target
    JaffaCakes118_eaee1f74cc9ae31299b598b935bfead3.exe
  • Size 600KB
  • Sample250504-mr1vsatpt3
  • SHA256 3e06f56d26583dfba148969d99d8447a797f6b98332b553de2c3da2eb63f5239
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
  • Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

  • Pykspa family
  • UAC bypass 3 TTPs 15 IoCs
  • Detect Pykspa worm 2 IoCs
  • Adds policy Run key to start application 2 TTPs 37 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 40 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 12 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 23 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eaee1f74cc9ae31299b598b935bfead3.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eaee1f74cc9ae31299b598b935bfead3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
      "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\jaffacakes118_eaee1f74cc9ae31299b598b935bfead3.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2212
      • C:\Users\Admin\AppData\Local\Temp\wggpp.exe
        "C:\Users\Admin\AppData\Local\Temp\wggpp.exe" "-C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Impair Defenses: Safe Mode Boot
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops autorun.inf file
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:3404
      • C:\Users\Admin\AppData\Local\Temp\wggpp.exe
        "C:\Users\Admin\AppData\Local\Temp\wggpp.exe" "-C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:2948
    • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
      "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\jaffacakes118_eaee1f74cc9ae31299b598b935bfead3.exe"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:2576
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c wwmlbytnlndfxuhudppfe.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\wwmlbytnlndfxuhudppfe.exe
      wwmlbytnlndfxuhudppfe.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5076
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c jgtpcwofazmlaueoud.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3380
    • C:\Windows\jgtpcwofazmlaueoud.exe
      jgtpcwofazmlaueoud.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5944
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\jgtpcwofazmlaueoud.exe*."
        3⤵
        • Executes dropped EXE
        PID:3020
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c toztewmburczmemu.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5020
    • C:\Windows\toztewmburczmemu.exe
      toztewmburczmemu.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4756
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4484
    • C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe
      C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:460
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe
      C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5780
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\jgtpcwofazmlaueoud.exe*."
        3⤵
        • Executes dropped EXE
        PID:1896
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe
      C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3812
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe
      C:\Users\Admin\AppData\Local\Temp\awidpizpjhtrfyhqv.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3336
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\awidpizpjhtrfyhqv.exe*."
        3⤵
        • Executes dropped EXE
        PID:388
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c jgtpcwofazmlaueoud.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Windows\jgtpcwofazmlaueoud.exe
      jgtpcwofazmlaueoud.exe
      2⤵
      • Executes dropped EXE
      PID:1700
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c hgvtieyropefwseqyjix.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Windows\hgvtieyropefwseqyjix.exe
      hgvtieyropefwseqyjix.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4144
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c wwmlbytnlndfxuhudppfe.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Windows\wwmlbytnlndfxuhudppfe.exe
      wwmlbytnlndfxuhudppfe.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5508
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\wwmlbytnlndfxuhudppfe.exe*."
        3⤵
        • Executes dropped EXE
        PID:124
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c awidpizpjhtrfyhqv.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Windows\awidpizpjhtrfyhqv.exe
      awidpizpjhtrfyhqv.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5940
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\awidpizpjhtrfyhqv.exe*."
        3⤵
        • Executes dropped EXE
        PID:796
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c toztewmburczmemu.exe .
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\Windows\toztewmburczmemu.exe
      toztewmburczmemu.exe .
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\toztewmburczmemu.exe*."
        3⤵
        • Executes dropped EXE
        PID:568
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe
      C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5772
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe
    1⤵
      PID:5376
      • C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe
        C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5320
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe .
      1⤵
        PID:1884
        • C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe
          C:\Users\Admin\AppData\Local\Temp\wwmlbytnlndfxuhudppfe.exe .
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:644
          • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
            "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\wwmlbytnlndfxuhudppfe.exe*."
            3⤵
            • Modifies WinLogon for persistence
            • UAC bypass
            • Adds policy Run key to start application
            • Executes dropped EXE
            • Adds Run key to start application
            • Checks whether UAC is enabled
            • Drops file in System32 directory
            • Drops file in Windows directory
            • System policy modification
            PID:6088
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe .
        1⤵
          PID:1136
          • C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe
            C:\Users\Admin\AppData\Local\Temp\hgvtieyropefwseqyjix.exe .
            2⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:3080
            • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
              "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\hgvtieyropefwseqyjix.exe*."
              3⤵
              • Executes dropped EXE
              PID:4432
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c usgdrmfxtthhxsdovfd.exe .
          1⤵
            PID:4848
            • C:\Windows\usgdrmfxtthhxsdovfd.exe
              usgdrmfxtthhxsdovfd.exe .
              2⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:4652
              • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
                "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\usgdrmfxtthhxsdovfd.exe*."
                3⤵
                • Executes dropped EXE
                PID:1540
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe
            1⤵
              PID:6016
              • C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe
                C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe
                2⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                PID:1344
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c awidpizpjhtrfyhqv.exe
              1⤵
                PID:2036
                • C:\Windows\awidpizpjhtrfyhqv.exe
                  awidpizpjhtrfyhqv.exe
                  2⤵
                  • Executes dropped EXE
                  PID:1116
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe .
                1⤵
                  PID:3360
                  • C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe
                    C:\Users\Admin\AppData\Local\Temp\usgdrmfxtthhxsdovfd.exe .
                    2⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    PID:3536
                    • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
                      "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\usgdrmfxtthhxsdovfd.exe*."
                      3⤵
                      • Modifies WinLogon for persistence
                      • UAC bypass
                      • Adds policy Run key to start application
                      • Executes dropped EXE
                      • Adds Run key to start application
                      • Checks whether UAC is enabled
                      • Drops file in System32 directory
                      • Drops file in Windows directory
                      • System policy modification
                      PID:940
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c hgvtieyropefwseqyjix.exe .
                  1⤵
                    PID:3784
                    • C:\Windows\hgvtieyropefwseqyjix.exe
                      hgvtieyropefwseqyjix.exe .
                      2⤵
                      • Executes dropped EXE
                      • System Location Discovery: System Language Discovery
                      PID:3044
                      • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
                        "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\windows\hgvtieyropefwseqyjix.exe*."
                        3⤵
                        • Executes dropped EXE
                        PID:1936
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe .
                    1⤵
                      PID:3544
                      • C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe
                        C:\Users\Admin\AppData\Local\Temp\toztewmburczmemu.exe .
                        2⤵
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        PID:1384
                        • C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
                          "C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe" "c:\users\admin\appdata\local\temp\toztewmburczmemu.exe*."
                          3⤵
                          • Executes dropped EXE
                          PID:4680
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c usgdrmfxtthhxsdovfd.exe
                      1⤵
                        PID:2480
                        • C:\Windows\usgdrmfxtthhxsdovfd.exe
                          usgdrmfxtthhxsdovfd.exe
                          2⤵
                          • Executes dropped EXE
                          PID:1212
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe
                        1⤵
                          PID:4104
                          • C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe
                            C:\Users\Admin\AppData\Local\Temp\jgtpcwofazmlaueoud.exe
                            2⤵
                            • Executes dropped EXE
                            PID:4556

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              wggppwbfnzzlnurohdnnwwdimug.sub

                              • Path C:\Program Files (x86)\wggppwbfnzzlnurohdnnwwdimug.sub
                              • Size 272B
                              • SHA256 9b1052070c5288fffbb8b7dd673c758dbf70baa36eccf46298824b8e50daae68
                              • MD5 SHA1 SHA512

                              wggppwbfnzzlnurohdnnwwdimug.sub

                              • Path C:\Program Files (x86)\wggppwbfnzzlnurohdnnwwdimug.sub
                              • Size 272B
                              • SHA256 776b4d1526e71d1c1f4c0a376ac4aa2c45fbd6eb301fb3d49bd7f2b76d70b778
                              • MD5 SHA1 SHA512

                              wggppwbfnzzlnurohdnnwwdimug.sub

                              • Path C:\Program Files (x86)\wggppwbfnzzlnurohdnnwwdimug.sub
                              • Size 272B
                              • SHA256 5f6025d94d07b4aa930587b3054d1636b709c496a6a096df442a0189a4476ddc
                              • MD5 SHA1 SHA512

                              wggpp.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\wggpp.exe
                              • Size 716KB
                              • SHA256 c068a0c36e30a6834a8db12e6399e2da26873519566388e516d91cde19ed2948
                              • MD5 SHA1 SHA512 SSDEEP

                              yeweruxwiog.exe

                              • Path C:\Users\Admin\AppData\Local\Temp\yeweruxwiog.exe
                              • Size 320KB
                              • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
                              • MD5 SHA1 SHA512 SSDEEP

                              toztewmburczmemuyfalfqiyngdolyqygkrmxr.ukz

                              • Path C:\Users\Admin\AppData\Local\toztewmburczmemuyfalfqiyngdolyqygkrmxr.ukz
                              • Size 3KB
                              • SHA256 b30de1e5f49c551024a1c864630a20cc4a78ac9fe504ab7a75f16b4df994ec28
                              • MD5 SHA1 SHA512

                              wggppwbfnzzlnurohdnnwwdimug.sub

                              • Path C:\Users\Admin\AppData\Local\wggppwbfnzzlnurohdnnwwdimug.sub
                              • Size 272B
                              • SHA256 061b335e46ec3ec4dfdb77770f9264c84f33483c8ca6347bc99be1bb6f6364ec
                              • MD5 SHA1 SHA512

                              jgtpcwofazmlaueoud.exe

                              • Path C:\Windows\SysWOW64\jgtpcwofazmlaueoud.exe
                              • Size 600KB
                              • SHA256 3e06f56d26583dfba148969d99d8447a797f6b98332b553de2c3da2eb63f5239
                              • MD5 SHA1 SHA512 SSDEEP