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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 13:38

General

  • Target

    a8665d0ba00b860befbf28d3e5e670d5.exe

  • Size

    3.6MB

  • MD5

    a8665d0ba00b860befbf28d3e5e670d5

  • SHA1

    8f5f4ef8ee3408f6216d7abf731911ac7f363f40

  • SHA256

    5b163534033ed61d09c3eba2b2743d8869729a5a566640c1d10f18809f09e643

  • SHA512

    3006f4badede6be27b37d857ed33a281b75d159553d50b44e4a1c82fb8bf7c86a1f0e5e406b5750354c48b1facefc02fb8c2701dbcc0daefc373b5806b1c44f6

  • SSDEEP

    49152:BslvbszilY8dy0WFltM4fR44Mz5zJJqBivmfM+h2Xd/ACygCZk6QAM:2FxgrBKfz5WZh2HRak1

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.

  • Drops startup file 1 IoCs
  • Themida packer 7 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8665d0ba00b860befbf28d3e5e670d5.exe
    "C:\Users\Admin\AppData\Local\Temp\a8665d0ba00b860befbf28d3e5e670d5.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Drops startup file
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:3844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/3844-0-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-2-0x00007FF90E910000-0x00007FF90EB05000-memory.dmp

    Filesize

    2.0MB

  • memory/3844-1-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-4-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-3-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-5-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-6-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-20-0x00007FF7FAB40000-0x00007FF7FAF11000-memory.dmp

    Filesize

    3.8MB

  • memory/3844-21-0x00007FF90E910000-0x00007FF90EB05000-memory.dmp

    Filesize

    2.0MB