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Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    17/11/2023, 02:35

General

  • Target

    NEAS.098aeeead8bcc2fc053a4a7af5db4190.exe

  • Size

    2.5MB

  • MD5

    098aeeead8bcc2fc053a4a7af5db4190

  • SHA1

    717d879bd4178c857c94c34f2f517193ca8460f6

  • SHA256

    2e24bbb3773c2d0fab2156685298b7c4adf96c22790beab3be80226995954b51

  • SHA512

    c2301e55402b6107a70018b07d398c599b86279faec0a8f484efc76162317b935e653ae3d8173e050e321ea9226e06cf426d58cfe3e124719c1e61677599d0d1

  • SSDEEP

    49152:y4daOqAehx7x20RKuniOJqfU7F1tLYoNovTE3pzNx0FOnpe4v/681:cP7tRtrJq88SqgnpXiu

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Modifies AppInit DLL entries 2 TTPs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.098aeeead8bcc2fc053a4a7af5db4190.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.098aeeead8bcc2fc053a4a7af5db4190.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Suspicious use of UnmapMainImage
    PID:2868
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {FB9B440D-BAFA-4EDF-95CF-6CE43F686099} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\PROGRA~3\Mozilla\suvkbwn.exe
      C:\PROGRA~3\Mozilla\suvkbwn.exe -tlhykym
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious use of UnmapMainImage
      PID:2760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~3\Mozilla\suvkbwn.exe

    Filesize

    2.5MB

    MD5

    1db5089a72da7f0ddce4049fc58b1c98

    SHA1

    b69ff9d14af215dfa22e273b002aef0295b7e222

    SHA256

    8a1abdee2341c59ec689c334a73051ec9a25d66e8fd4e6c7b118a5ca9b5e40a8

    SHA512

    072c13a70d3027985d6268db90dcdafde5435c31643f11eb4e051a50c75f4419a3ae874f136735097fdd0d46ea72dd661eef48419e64b5a5c600efc8fe5d8eb2

  • C:\PROGRA~3\Mozilla\suvkbwn.exe

    Filesize

    2.5MB

    MD5

    1db5089a72da7f0ddce4049fc58b1c98

    SHA1

    b69ff9d14af215dfa22e273b002aef0295b7e222

    SHA256

    8a1abdee2341c59ec689c334a73051ec9a25d66e8fd4e6c7b118a5ca9b5e40a8

    SHA512

    072c13a70d3027985d6268db90dcdafde5435c31643f11eb4e051a50c75f4419a3ae874f136735097fdd0d46ea72dd661eef48419e64b5a5c600efc8fe5d8eb2

  • memory/2760-10-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB

  • memory/2760-9-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB

  • memory/2760-11-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB

  • memory/2760-12-0x0000000000320000-0x000000000037C000-memory.dmp

    Filesize

    368KB

  • memory/2760-13-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/2760-15-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/2868-4-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/2868-3-0x0000000000330000-0x000000000038C000-memory.dmp

    Filesize

    368KB

  • memory/2868-6-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/2868-2-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB

  • memory/2868-1-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB

  • memory/2868-0-0x0000000000400000-0x0000000000A57000-memory.dmp

    Filesize

    6.3MB