Analysis

  • max time kernel
    128s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 01:25

General

  • Target

    DRCom.dll

  • Size

    2.8MB

  • MD5

    3c8493c81b10ccb36a153cb7b4a6e6d7

  • SHA1

    8834fed8a9595f35e86c6b39eb2993b85041344e

  • SHA256

    ac8353cad0c254f179eaa67eec12392da4847931f2d8f4bddfcf732d5eabd77c

  • SHA512

    ae057e71e0ae0dcb55cc8cac44fa9af986a11d4e8b6eec293ad061685f3f52d930d5746f32b42f0e601359c117a94f37e6529f336293a429ba2a51b8c62569ed

  • SSDEEP

    49152:82TB73A+tsF0cPhBQqOwzuWJgNmVc5l9+YW9FXtJi0b5cHU50Qsh/:84R6qcPJuNmVMYYO3Ji0b5cH407h/

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Themida packer 4 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\DRCom.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3464
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\DRCom.dll,#1
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:2296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2296-0-0x0000000010000000-0x000000001071C000-memory.dmp

    Filesize

    7.1MB

  • memory/2296-1-0x00000000771D4000-0x00000000771D6000-memory.dmp

    Filesize

    8KB

  • memory/2296-2-0x0000000010000000-0x000000001071C000-memory.dmp

    Filesize

    7.1MB

  • memory/2296-3-0x0000000010000000-0x000000001071C000-memory.dmp

    Filesize

    7.1MB

  • memory/2296-4-0x0000000010000000-0x000000001071C000-memory.dmp

    Filesize

    7.1MB