Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 23:00

General

  • Target

    ad1427f6cca3d14f405f847fdb508efa.exe

  • Size

    2.6MB

  • MD5

    ad1427f6cca3d14f405f847fdb508efa

  • SHA1

    c131531758503e531edfc322048269291d7719c0

  • SHA256

    a628618f961434862d7ae607e762b29d299ad695648caac0b7c37278b623e373

  • SHA512

    905581251e9ddfb451d09a9c07b6e8e5ce73563ca9eb16422d43991613546cb619791c22a18c147af7680a237c0ebeac59427c53dd57b83cf4a9e4cdeb1e2c33

  • SSDEEP

    49152:tU/5M1X4Wl/YvzYCQR9RQs+C40yZpJaD99Gf:tKq4oEa9RQs+Cn4/UKf

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
  • 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\ad1427f6cca3d14f405f847fdb508efa.exe
    "C:\Users\Admin\AppData\Local\Temp\ad1427f6cca3d14f405f847fdb508efa.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:1048
    • \??\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:2800
      • \??\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:2672
        • \??\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:2536
          • \??\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:2780
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:03 /f
            5⤵
            • Creates scheduled task(s)
            PID:2980
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:04 /f
            5⤵
            • Creates scheduled task(s)
            PID:3040
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:05 /f
            5⤵
            • Creates scheduled task(s)
            PID:1940
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2704

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      2.6MB

      MD5

      22decbad45b551a45193ea3f859129eb

      SHA1

      de5d47700754c2891f4525c3e21c164817a20c85

      SHA256

      efbbcc825eceb86535a8a5ecd39b317471b30e4c4bf0014192f0b858d9699b2c

      SHA512

      095800f0bed6266c1c7eb1e02b62706406c493b2363322f6eede35926a1ffba3dc3d7bbaa60f42f3544a2862077440cb96a444e1a53ee106cdea8d1c12c5f652

    • \??\c:\windows\resources\spoolsv.exe

      Filesize

      1.7MB

      MD5

      93877b66a29abd1270cd01b20c846fc5

      SHA1

      0c085b0de9f4f392ff81b1e756aaf05111204513

      SHA256

      0a8fec1559e7246783dee577679c6c899648d97baa605a24156f13d062dc5af0

      SHA512

      54d985cb83784e614a717d0be3df4e1a0246b4f1425f0a7cf4b8eac4881f5f70ba20128444a18977aefbc02b5b6d5104444645daa21fa71c89b27f06fa4111b8

    • \??\c:\windows\resources\themes\explorer.exe

      Filesize

      1.7MB

      MD5

      78b76f7b3d2d342d932254315f901e3d

      SHA1

      c447b631b935902d081225fad3098baa40bcf21c

      SHA256

      28efd42f78360229973fc5ab2bb2ff2d659ed169e3a11c0ec835748f019406f3

      SHA512

      46a99d49f3de8330c7f8dc334500f1a11cfa8ceb75e75318b3c0807a8aba47f6e6b89c74d46e87465d7db4c5a0668d1aaf1cdaf811734410ee361a46ddc3e369

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.6MB

      MD5

      ddb087430c0fa0bca8357f701763b61e

      SHA1

      3a52de00094da0c458c222d750b90fd05bb28cb8

      SHA256

      dd633a70f13544242cc2cbc3ca2078036f7d8abb1ac715bc79e37e0f6fa50bfc

      SHA512

      e5fe029721619e560311e9550be40490099d1e7ac8654a96e9fee2f0708a365e48dd7a5d88a75db6ff9c58442b5096d3fe876d0b7a9f564ad499fbcc4a830c3c

    • \Windows\Resources\svchost.exe

      Filesize

      2.6MB

      MD5

      250bca199bc8381a2c4db7c3befef848

      SHA1

      db7b471a1a4c3d1b8c24588872bf36f1a959ea42

      SHA256

      b4e668e43d88f109ba178e4d0b955c3ae4c127dad24441d16cf1636b4da6d080

      SHA512

      113eca3fe2711aa58e1becef1fd09dcb9f5b3a5768da2c4106c21c98b141ebed6671e8efc6a01455c7447ab317f18ec35875e1f7334a9f8d0ae15cf5b7b6c007

    • memory/1048-47-0x0000000003450000-0x0000000003A67000-memory.dmp

      Filesize

      6.1MB

    • memory/1048-0-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/1048-1-0x0000000077A40000-0x0000000077A42000-memory.dmp

      Filesize

      8KB

    • memory/1048-37-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/1048-50-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2536-53-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2536-73-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2536-55-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2536-35-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2672-24-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2672-49-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2672-33-0x00000000032F0000-0x0000000003907000-memory.dmp

      Filesize

      6.1MB

    • memory/2780-48-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2780-43-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2800-22-0x0000000003520000-0x0000000003B37000-memory.dmp

      Filesize

      6.1MB

    • memory/2800-52-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2800-51-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2800-64-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB

    • memory/2800-11-0x0000000000400000-0x0000000000A17000-memory.dmp

      Filesize

      6.1MB