Resubmissions

22-06-2024 18:38

240622-w938astclj 10

20-06-2024 19:06

240620-xscjpashpg 10

Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    20-06-2024 19:06

General

  • Target

    Yonder_Fivem.exe

  • Size

    6.3MB

  • MD5

    b1c825266b3ba65293047125b6187839

  • SHA1

    2717197678e400a693ca7c3a4eedf1fe7001382b

  • SHA256

    f6602a9eba868412294f032e365016623518da2a24c949e9659256c46d156bd1

  • SHA512

    24830021254f1206775201f98fb0323dec02f947374a367c8d2f0c9c328b55fe492a36b0d2217ca41f1cdeb24152290501cef7b01dfb20e717db10f92952760e

  • SSDEEP

    98304:gjWxDXRGFyZftzByQ6/Sw87AB3bq6p9OJmtgiBnuNfXWNasKo+oX2hsfBoj:gjWxFG2JByQ6/g01q6PiNiB6y97X2/j

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 7 IoCs
  • VMProtect packed file 1 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Yonder_Fivem.exe
    "C:\Users\Admin\AppData\Local\Temp\Yonder_Fivem.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2240
    • \??\c:\users\admin\appdata\local\temp\yonder_fivem.exe 
      c:\users\admin\appdata\local\temp\yonder_fivem.exe 
      2⤵
      • Executes dropped EXE
      PID:2124
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2912
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2804
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2640
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2832
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:2984
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:08 /f
              6⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2764
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:09 /f
              6⤵
              • Scheduled Task/Job: Scheduled Task
              PID:1360
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:10 /f
              6⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2292
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:2756

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Resources\Themes\icsys.icn.exe

      Filesize

      135KB

      MD5

      978ae55280e654a976ad5c783299bcab

      SHA1

      7c770eea670e19ee20ca85739f2ae7aa64df36b8

      SHA256

      26060149b4d3fd2303a771485c20603006eca325afd8cae3ea50b70b680c3445

      SHA512

      db674c677472b9d1f09747ee07ee111d9b346fd3d5a9f940fb07b7781d14a8a0a27a2bdca82a50929eb55dda9b83a437b5252313c071952eba2bbd2bcbe02b13

    • \Users\Admin\AppData\Local\Temp\yonder_fivem.exe 

      Filesize

      6.2MB

      MD5

      bc7128e9bc6cd871e9d2c287cd717d39

      SHA1

      b19ac0afaa4d93f9469a4367056b62e9ba49f094

      SHA256

      ed5b5ac658a134ad7f62d115510abca2850459b313d53e7d1742190a9ea60d14

      SHA512

      12dc613eda0f0372bc40c3ce74c3b5dd5cb1bf01d43e6786f7a11c7b9d89171aad85c9b2a813072cfdc73e511d192cb60be8effebd3c1c35d60a2a5ed20dd349

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      135KB

      MD5

      96e8c6f18c0627dc1bd40cb06444730c

      SHA1

      bb0ceff7cd4de1cc27f29ed33ef34cf4428169a5

      SHA256

      1b57004835ef5d976169750b120f0bd60de7a85ea2ea150e7e8356e1d23dcf7d

      SHA512

      b0cf7815ff27786f6b659a3e60f0a1e7058cc17d39f9d9a686449b115b507ab2be77485b4bc6882b62d153062f690cf141643d75f121a58a440ec9326cde98a8

    • \Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      72de4414dd12cedf85ed49a170c7352f

      SHA1

      6de5fb92277b332e3f1d3fa31c9af3d808feebe0

      SHA256

      d7659c773acfc75804a8b25aaf22513b3b27e895127bb4f5b7a687f74e79d200

      SHA512

      6cb8bbd478d7d076634c0b8d8db132fcec810eb0a3cd837d7ebc181711df63246354f1ffcba0277d81c03149af2a4722ece7977b3027873ecf27730aee669770

    • \Windows\Resources\svchost.exe

      Filesize

      135KB

      MD5

      58831f17468bd441f247e4902e244203

      SHA1

      9cefa8dacccf9971fa6199c90945a25166768393

      SHA256

      bfde6cc23b6945867db240c59319af4f2da4b62a5693ab0bb3b0d833939c34b8

      SHA512

      761e2d587b4dc0026964a76a4339e7c3da39f2449b1d834dff434c9d9d8da2c61415fa7c99ed4b5e8401a717837e896b2bc3a5b3b80a31677641e16f63a465c3

    • memory/2240-13-0x0000000000420000-0x000000000043F000-memory.dmp

      Filesize

      124KB

    • memory/2240-0-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2240-59-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2640-46-0x00000000002A0000-0x00000000002BF000-memory.dmp

      Filesize

      124KB

    • memory/2832-53-0x00000000004A0000-0x00000000004BF000-memory.dmp

      Filesize

      124KB

    • memory/2912-23-0x0000000000350000-0x000000000036F000-memory.dmp

      Filesize

      124KB

    • memory/2912-58-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2984-57-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB