Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 02:39

General

  • Target

    89a2cf3f42ccf919d224c04120d83a14769ae50f59a2e181f766a104a98b1590.exe

  • Size

    2.5MB

  • MD5

    5480cdaf397ec7d51489a1ec48df429c

  • SHA1

    039322ecdb08371144a76ca9e38f51aa0bfec024

  • SHA256

    89a2cf3f42ccf919d224c04120d83a14769ae50f59a2e181f766a104a98b1590

  • SHA512

    3854b8cbb812ce17c1510efa3ea5ff58322d932060dc8e5c1b863d0bdbe0882af53f42af46ccb443dab14ee031ffa86c401c7bc2e66904ef080b6771480f9b63

  • SSDEEP

    49152:MxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxS:Mxx9NUFkQx753uWuCyyxS

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Detects executables packed with Themida 16 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
  • Checks BIOS information in registry 2 TTPs 10 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Themida packer 16 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 5 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • Creates scheduled task(s) 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 10 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\89a2cf3f42ccf919d224c04120d83a14769ae50f59a2e181f766a104a98b1590.exe
    "C:\Users\Admin\AppData\Local\Temp\89a2cf3f42ccf919d224c04120d83a14769ae50f59a2e181f766a104a98b1590.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2784
    • \??\c:\windows\resources\themes\explorer.exe
      c:\windows\resources\themes\explorer.exe
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2976
      • \??\c:\windows\resources\spoolsv.exe
        c:\windows\resources\spoolsv.exe SE
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2524
        • \??\c:\windows\resources\svchost.exe
          c:\windows\resources\svchost.exe
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2636
          • \??\c:\windows\resources\spoolsv.exe
            c:\windows\resources\spoolsv.exe PR
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetWindowsHookEx
            PID:2796
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:41 /f
            5⤵
            • Creates scheduled task(s)
            PID:2544
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:42 /f
            5⤵
            • Creates scheduled task(s)
            PID:2328
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:43 /f
            5⤵
            • Creates scheduled task(s)
            PID:1800
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2188

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      2.5MB

      MD5

      98c937621695e2135ed5ae69368e5e57

      SHA1

      9df70e06a1a76aa1483d4f86274d7d50d29ccbbe

      SHA256

      0d351cd7b0fe7945781b03770a53c40f72a982714bc806c0b6018b169e7fb98e

      SHA512

      5d435bf29c8ef81463a2fa25afd26efe569ec436302900c2b4ab22118922f5883f8f774cd0f7e17431252fcc8f5393329c53f1ebd4e42cd96638b0b4620d7ec3

    • C:\Windows\Resources\svchost.exe

      Filesize

      2.5MB

      MD5

      480d929e895fac20a0471910da8b4a83

      SHA1

      17d34c09f9fd28534d89fe9b6d4a0a552bd115ab

      SHA256

      b040d324decd2f5bf1dcd3c30b87d3bee95ab7ae88190071de2484a57ce50df3

      SHA512

      14d8614261ce505551c055cafa8ab6367edfa436bf6837647baa3e19a7db2138fa6e7149ac144ac586409440410116c758041f05d790486406063e7331f2a11f

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.5MB

      MD5

      cd1ae195a1a81341e3197c09e510105f

      SHA1

      fab3614635534d26ee445408f41692a3950364d5

      SHA256

      b34637d706407653787c52f34c23f2dba79aa659cf96aede6c2d7c971c0baa44

      SHA512

      6f00771a13b396c86c79adef77069d8eb255412d0744d6e9715f1950617e6db76f3680305d87c7a57c9c2ea9b434ea6bebde7afd39a8c5d6c697bd6dcbeb6e16

    • memory/2524-23-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2524-48-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2524-34-0x0000000003680000-0x0000000003C8E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-52-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-35-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-42-0x00000000031B0000-0x00000000037BE000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-50-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-1-0x0000000077350000-0x0000000077352000-memory.dmp

      Filesize

      8KB

    • memory/2796-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2796-47-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-22-0x00000000037A0000-0x0000000003DAE000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-51-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-11-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-53-0x00000000037A0000-0x0000000003DAE000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-62-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-68-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2976-74-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB