Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    07-12-2021 21:32

General

  • Target

    af1a95797963e51df6f8348883dd83e1.exe

  • Size

    2.5MB

  • MD5

    af1a95797963e51df6f8348883dd83e1

  • SHA1

    ad7383cc8576ff1ba2652a755d7dd9b585d44f8a

  • SHA256

    0e9d7dd7f56cf707f449e9c046499f2b0a4a953794af5e7a15d3a6d5971594ef

  • SHA512

    ff4739579e66bd383872ed82016727c812cfc512f6eb198586030143988c810d42cb25fcaa230671b229d3e71ff02050f0f876d2d55440fb9e5e7d4e08b0e6ad

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Themida packer 10 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af1a95797963e51df6f8348883dd83e1.exe
    "C:\Users\Admin\AppData\Local\Temp\af1a95797963e51df6f8348883dd83e1.exe"
    1⤵
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:532
    • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
      "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      PID:684

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    af1a95797963e51df6f8348883dd83e1

    SHA1

    ad7383cc8576ff1ba2652a755d7dd9b585d44f8a

    SHA256

    0e9d7dd7f56cf707f449e9c046499f2b0a4a953794af5e7a15d3a6d5971594ef

    SHA512

    ff4739579e66bd383872ed82016727c812cfc512f6eb198586030143988c810d42cb25fcaa230671b229d3e71ff02050f0f876d2d55440fb9e5e7d4e08b0e6ad

  • \Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    af1a95797963e51df6f8348883dd83e1

    SHA1

    ad7383cc8576ff1ba2652a755d7dd9b585d44f8a

    SHA256

    0e9d7dd7f56cf707f449e9c046499f2b0a4a953794af5e7a15d3a6d5971594ef

    SHA512

    ff4739579e66bd383872ed82016727c812cfc512f6eb198586030143988c810d42cb25fcaa230671b229d3e71ff02050f0f876d2d55440fb9e5e7d4e08b0e6ad

  • memory/532-55-0x0000000075C51000-0x0000000075C53000-memory.dmp
    Filesize

    8KB

  • memory/532-56-0x0000000000180000-0x0000000000813000-memory.dmp
    Filesize

    6.6MB

  • memory/532-57-0x0000000000180000-0x0000000000813000-memory.dmp
    Filesize

    6.6MB

  • memory/532-59-0x0000000000180000-0x0000000000813000-memory.dmp
    Filesize

    6.6MB

  • memory/532-58-0x0000000000180000-0x0000000000813000-memory.dmp
    Filesize

    6.6MB

  • memory/684-61-0x0000000000000000-mapping.dmp
  • memory/684-64-0x0000000000B60000-0x00000000011F3000-memory.dmp
    Filesize

    6.6MB

  • memory/684-65-0x0000000000B60000-0x00000000011F3000-memory.dmp
    Filesize

    6.6MB

  • memory/684-66-0x0000000000B60000-0x00000000011F3000-memory.dmp
    Filesize

    6.6MB

  • memory/684-67-0x0000000000B60000-0x00000000011F3000-memory.dmp
    Filesize

    6.6MB