Analysis

  • max time kernel
    120s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07/09/2024, 02:58

General

  • Target

    caae26b72d0960304e244c8434132840N.exe

  • Size

    2.5MB

  • MD5

    caae26b72d0960304e244c8434132840

  • SHA1

    bc4735a47cb28067a99d1db7ba2625f31e06ea7f

  • SHA256

    f517c3f8313b330d30932bc4923897a6b191c941e559d412f59a1c681eabf770

  • SHA512

    37e1ea2cdaa05381527a153310dfc097b2e9e22000b37a772c78811f577096da5090e5fa585bb028fc7a564dfbd77c906be06847c0250d26d3b7284e0ec762d4

  • SSDEEP

    49152:MxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxr:Mxx9NUFkQx753uWuCyyxr

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 21 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\caae26b72d0960304e244c8434132840N.exe
    "C:\Users\Admin\AppData\Local\Temp\caae26b72d0960304e244c8434132840N.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:2304
    • \??\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:2320
      • \??\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:2128
        • \??\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:2692
          • \??\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:2796
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:00 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2884
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:01 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2120
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2760

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Windows\Resources\spoolsv.exe

            Filesize

            2.5MB

            MD5

            b5ff599efd3613219eb87a7c8596b689

            SHA1

            74560bca7e785c62a10f75e55995ef55eb086b84

            SHA256

            27ec2f14b1911f55d05c2eb5d13e0d864443f3121ee0405d9cd5e28294434106

            SHA512

            d6e659d145084fa787f0527e547541d55745ddf23da6326eb3834cc4b5313a892caf9676b6e187be946bfe32e465cf173b7fddf78ed07879ae7ea0f750c11834

          • \Windows\Resources\Themes\explorer.exe

            Filesize

            2.5MB

            MD5

            7fb72eb57da5686275c6ee3abd5ec874

            SHA1

            f58c2d12a2cd1717191843e0e1c1a34327ecc061

            SHA256

            40e160c0b3dd7e1936fa503f880d479d3f239a959658c35e2c128dc312a79f3c

            SHA512

            d26752d85849629e06048d0a5eeb0d807f90792b86e4ac7aed72d122321a404282c66f13a977cd71e435626f9415acefd28b773cbf2b5a224895f661ff0e589a

          • \Windows\Resources\svchost.exe

            Filesize

            2.5MB

            MD5

            c98b64152a48151cda437b94c17d6715

            SHA1

            b4a8508e5e6e35cd3bd9f0da6fa0147e371daa50

            SHA256

            aea96e1e27e494ac1a22e11761a6d65d1e8e2546187044abc36158b1b4a9404e

            SHA512

            956457789322a98f9d8644178877d68029df320af15c45917982fa1de11e0e0610b07e16dc1e14bc325824f7fc4a90bd6373f1347e7f57fa221b7fa7bd8a6bae

          • memory/2128-24-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2128-35-0x0000000003630000-0x0000000003C3E000-memory.dmp

            Filesize

            6.1MB

          • memory/2128-51-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2304-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2304-1-0x0000000077470000-0x0000000077472000-memory.dmp

            Filesize

            8KB

          • memory/2304-10-0x0000000003670000-0x0000000003C7E000-memory.dmp

            Filesize

            6.1MB

          • memory/2304-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2304-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-12-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-69-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-77-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-65-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-22-0x00000000036B0000-0x0000000003CBE000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-54-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-55-0x00000000036B0000-0x0000000003CBE000-memory.dmp

            Filesize

            6.1MB

          • memory/2320-57-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2692-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2692-68-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2692-36-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2692-78-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2796-49-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB

          • memory/2796-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

            Filesize

            6.1MB