Resubmissions

30-05-2024 18:56

240530-xlvfxshe33 9

30-05-2024 18:54

240530-xkezvagb8v 9

29-05-2024 23:57

240529-3zvazaeg6s 9

Analysis

  • max time kernel
    28s
  • max time network
    3s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 18:56

General

  • Target

    asa.exe

  • Size

    7.0MB

  • MD5

    e0c26d4ff2caf2baaa9968b6a1fd33ff

  • SHA1

    5631a0da13af42bbacbcfc2e878a37b857c21157

  • SHA256

    67d6547f4024b6fefc861cf459edd084508b06606d98b79cf7e323fe88057e79

  • SHA512

    a3710eefa23286dbd704d26f9d5fb5f7f4cdf4433b6c4d84238e2c9b689b4e17c0dfb29912f9796f9a4f1d61c1f0e96348effb737895ff90df58088372a367d5

  • SSDEEP

    98304:EB2pC6XG4HNkq5UKPhc24Y1/QPldHVTgPNhV0ADXqQgpkWDRIZVMnu0jjD8ueJU:tcUG4raKu24YY7HVT4hV0AD6QgqKRgX

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.

  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Themida packer 5 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 AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\asa.exe
    "C:\Users\Admin\AppData\Local\Temp\asa.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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\46f17dfb-dd93-4b8b-9636-058b2dc118e8\AgileDotNetRT.dll

    Filesize

    2.8MB

    MD5

    1e275530f75ec0222ad0a49117819936

    SHA1

    c469db9377442dc65d1c4c6cc5985b28cb1c26e2

    SHA256

    d8519a2a1f40baeb1ee2e6eb1aca27745e5dcab7c046d65b27246e24af57d2bb

    SHA512

    76af1a2193a3b4dc6adc31c9d160b368c6d1a6368af1e99065b53c01cd1c6a93533167a570e6ea68959eeb06b24664f182ad7eef5d7f1ecbfc4cd55e83a72061

  • memory/4060-14-0x0000000071C30000-0x00000000723B5000-memory.dmp

    Filesize

    7.5MB

  • memory/4060-13-0x0000000071C30000-0x00000000723B5000-memory.dmp

    Filesize

    7.5MB

  • memory/4060-3-0x0000000005EC0000-0x0000000006466000-memory.dmp

    Filesize

    5.6MB

  • memory/4060-1-0x0000000000890000-0x0000000000F9A000-memory.dmp

    Filesize

    7.0MB

  • memory/4060-17-0x0000000072E50000-0x0000000072EDA000-memory.dmp

    Filesize

    552KB

  • memory/4060-11-0x00000000743C0000-0x0000000074B71000-memory.dmp

    Filesize

    7.7MB

  • memory/4060-2-0x00000000743C0000-0x0000000074B71000-memory.dmp

    Filesize

    7.7MB

  • memory/4060-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

    Filesize

    4KB

  • memory/4060-10-0x0000000071C30000-0x00000000723B5000-memory.dmp

    Filesize

    7.5MB

  • memory/4060-18-0x0000000006CD0000-0x0000000006D6C000-memory.dmp

    Filesize

    624KB

  • memory/4060-19-0x0000000006D70000-0x0000000006DD6000-memory.dmp

    Filesize

    408KB

  • memory/4060-20-0x0000000007180000-0x0000000007212000-memory.dmp

    Filesize

    584KB

  • memory/4060-21-0x0000000071C30000-0x00000000723B5000-memory.dmp

    Filesize

    7.5MB

  • memory/4060-22-0x00000000743CE000-0x00000000743CF000-memory.dmp

    Filesize

    4KB

  • memory/4060-23-0x00000000743C0000-0x0000000074B71000-memory.dmp

    Filesize

    7.7MB

  • memory/4060-25-0x00000000743C0000-0x0000000074B71000-memory.dmp

    Filesize

    7.7MB