Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2024 02:18

General

  • Target

    c1f137e967b895a9c21f96eb4e96d307ec964ac467f39215a9d834a2c0578cdb.exe

  • Size

    2.5MB

  • MD5

    d8874a5a86769a37d3147c2a6061d1c9

  • SHA1

    03a48cc2062073e998e010a8c4b458e05b99bcac

  • SHA256

    c1f137e967b895a9c21f96eb4e96d307ec964ac467f39215a9d834a2c0578cdb

  • SHA512

    6f7384152d78eec8433a04c8c5adf467cee47450b32d08a4baa04557cf2aa63d5194558bb005a95e728640f79d98886f4fe76ae75f39d18716212c6882709f89

  • SSDEEP

    49152:gxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxa:gxx9NUFkQx753uWuCyyxa

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Detects executables packed with Themida 18 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
  • Themida packer 18 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c1f137e967b895a9c21f96eb4e96d307ec964ac467f39215a9d834a2c0578cdb.exe
    "C:\Users\Admin\AppData\Local\Temp\c1f137e967b895a9c21f96eb4e96d307ec964ac467f39215a9d834a2c0578cdb.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • 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:3756
    • \??\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
      • 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:4296
      • \??\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
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2220
        • \??\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
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2060
          • \??\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:612

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Modify Registry

2
T1112

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\Resources\Themes\explorer.exe
    Filesize

    2.5MB

    MD5

    1fbfc1bdd86a60184238bce2fcb10797

    SHA1

    5b32279c5c1714c58e0fb9fdcd617359084736a5

    SHA256

    4f5c62dc4ab03d55b4364c18af7117cb671c74bc58a4fab6864e98a7c0272261

    SHA512

    db1bfa6291090dd5b30ea070f01e0c8ecdef220ce6153083ebd138bfe729f145e30f1cc2b8ee032cb2bcf2d9bb248d96e55944daa638e2237db84797b19a44b1

  • C:\Windows\Resources\spoolsv.exe
    Filesize

    2.5MB

    MD5

    8f20085fc2e81c30f222dc16086deb2f

    SHA1

    5b6a1e7a9dc1096f92271e4e136d4a5571bb3f50

    SHA256

    1fae54e51be262b98d7992671afac6c702ea12344d4c8de4c514464a333b3ef6

    SHA512

    7c5330f8d65c8bfefc403cc7324237bec8fc9df6e59ab4919d25a59ac4c60dc882d46962da4e6490e3697857e6d32c5c7f82256ccf06b7171663fbcc0a838d6d

  • C:\Windows\Resources\svchost.exe
    Filesize

    2.5MB

    MD5

    53a40b3c8b6bfff5380d3b00c3c98bcb

    SHA1

    2babbd8f2ab3fc239b6b7256ce1cd81fc17a5ded

    SHA256

    8310705e5c80bb2bed80373e4fe84863bd80061f1a52e8c0d71720ddfa03a1e3

    SHA512

    345f3dc30774918a696976b9d9fd52b00eb61654edcb48bcc266b1dcb37b01ab666ccb4bc087037d50432c7f6c3b0cb01a4e8a844d5ac68ecbc3275865eb8617

  • memory/612-37-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/2060-42-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/2060-45-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/2060-28-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/2220-38-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/2220-19-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/3756-0-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/3756-1-0x0000000077174000-0x0000000077176000-memory.dmp
    Filesize

    8KB

  • memory/3756-40-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-41-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-10-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-46-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-48-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-54-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-60-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB

  • memory/4296-64-0x0000000000400000-0x0000000000A0E000-memory.dmp
    Filesize

    6.1MB