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Analysis

  • max time kernel
    120s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07/09/2024, 09:53

General

  • Target

    dabff55fbaf499428753fad48a5f76d0N.exe

  • Size

    2.5MB

  • MD5

    dabff55fbaf499428753fad48a5f76d0

  • SHA1

    d2f665fca08fa2a191eec5ab8c750a71a77a3854

  • SHA256

    8650cc32a68d474938c678d1e2c15b56cd3c7553d17b82cf7fa384b9b2cfbd14

  • SHA512

    8c32dcd2d0c2b4ee604f0e9b09b3ca2610eb98de60ce80f9091bb6b30467610ee833ab9ab48a33841a0206182b84a63b04084ea97a535c617f14437e713656ce

  • SSDEEP

    49152:hxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxF:hxx9NUFkQx753uWuCyyxF

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 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 20 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
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dabff55fbaf499428753fad48a5f76d0N.exe
    "C:\Users\Admin\AppData\Local\Temp\dabff55fbaf499428753fad48a5f76d0N.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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1852
    • \??\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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2492
      • \??\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
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2248
        • \??\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
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2668
          • \??\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
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2684
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:55 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1556
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:56 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1996
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2916

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.5MB

      MD5

      5a377cae3fc16f55fdc5821651b48ebb

      SHA1

      0d0f692df3e11064cfca0d288fbce6e9dcb981b9

      SHA256

      6d10e847b5d481a94421bc92af05ef9dda0b8f7260afaa96683182bfd61ef993

      SHA512

      c6951eca2eb5061040cc77e0c09ea1dc1c98b3d2d4da8e3efee419c6bae90a82397480d3dba7d509669593c1e3a1388d21cfecd4d4cdb5fb6b3fe5da5f8eaa32

    • \Windows\Resources\spoolsv.exe

      Filesize

      2.5MB

      MD5

      29c8c2e2029b8c6837f5fb0754f34b90

      SHA1

      bac419b39b5647be39fea82e3124d0e102e621f2

      SHA256

      586a713a2d945a67d75f4ac1f70e83196c1d17d9a94ea4c77b0923e502ba51a0

      SHA512

      93200d3ea1b7364cc32258e7b6f8bf1661cd8d93eb05ab706fae67866a5dd3efd77feda7ca48e1c712e4d22dd1b3cc4179c6bd32a9af508a7d932b420b91933a

    • \Windows\Resources\svchost.exe

      Filesize

      2.5MB

      MD5

      85ee185221bbffdff73199428048186f

      SHA1

      56a8377b9b6e11b73718d817e6bfeefc60c7dbc4

      SHA256

      142ed85fa276a8b4d8c4e82eef0456dcc7e767f0643e559db292bd4349db35a7

      SHA512

      ea287a78bd701b2665c98c2f64dca8e51afec4a887a440347b2a0f787c0ac49ca413d6b8693e86d47e3ab4d898ccf8c8889691154ab54c75331f8fa6d2bd485b

    • memory/1852-44-0x0000000003660000-0x0000000003C6E000-memory.dmp

      Filesize

      6.1MB

    • memory/1852-1-0x0000000077230000-0x0000000077232000-memory.dmp

      Filesize

      8KB

    • memory/1852-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/1852-11-0x0000000003660000-0x0000000003C6E000-memory.dmp

      Filesize

      6.1MB

    • memory/1852-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/1852-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2248-24-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2248-35-0x00000000036D0000-0x0000000003CDE000-memory.dmp

      Filesize

      6.1MB

    • memory/2248-52-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-21-0x0000000003800000-0x0000000003E0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-12-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-54-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-64-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2492-68-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2668-36-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2668-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2668-67-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2684-45-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2684-50-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB