Resubmissions

28/02/2024, 08:04

240228-jyrznseh7x 9

23/02/2024, 14:57

240223-sblc2sbe25 9

Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 08:04

General

  • Target

    691ef3891d5c155f2689647f2c441617.exe

  • Size

    4.1MB

  • MD5

    691ef3891d5c155f2689647f2c441617

  • SHA1

    03252b08cea28b39026ead3ee95f9d3db3acf3ce

  • SHA256

    bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65

  • SHA512

    37f9e6c9ab03ceee528f8eab910d2ddaf8822a6c28bdb8b3129996120d50c4d51358482e14d8d4e90d3ef2e8a08cda5f36cd1109e0129998243e89806dc34960

  • SSDEEP

    98304:rJwI8rhd38BxuBCgbL5KWnsdZButFXK/IUCccYZPAxFe:GECwgQYspAF6/IjccYGF

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\691ef3891d5c155f2689647f2c441617.exe
    "C:\Users\Admin\AppData\Local\Temp\691ef3891d5c155f2689647f2c441617.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Drops startup file
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2828
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe"
      2⤵
      • Executes dropped EXE
      PID:520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe

          Filesize

          4KB

          MD5

          a5ce3aba68bdb438e98b1d0c70a3d95c

          SHA1

          013f5aa9057bf0b3c0c24824de9d075434501354

          SHA256

          9b860be98a046ea97a7f67b006e0b1bc9ab7731dd2a0f3a9fd3d710f6c43278a

          SHA512

          7446f1256873b51a59b9d2d3498cef5a41dbce55864c2a5fb8cb7d25f7d6e6d8ea249d551a45b75d99b1ad0d6fb4b5e4544e5ca77bcd627717d6598b5f566a79

        • memory/520-47-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

          Filesize

          9.9MB

        • memory/520-46-0x0000000000150000-0x0000000000158000-memory.dmp

          Filesize

          32KB

        • memory/2828-23-0x00000000011E0000-0x0000000001220000-memory.dmp

          Filesize

          256KB

        • memory/2828-32-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-8-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-10-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-12-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-14-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-13-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-16-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-15-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-18-0x00000000776B0000-0x00000000776B2000-memory.dmp

          Filesize

          8KB

        • memory/2828-19-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-17-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-20-0x0000000074670000-0x0000000074D5E000-memory.dmp

          Filesize

          6.9MB

        • memory/2828-21-0x0000000001390000-0x0000000001E52000-memory.dmp

          Filesize

          10.8MB

        • memory/2828-22-0x0000000001390000-0x0000000001E52000-memory.dmp

          Filesize

          10.8MB

        • memory/2828-0-0x0000000001390000-0x0000000001E52000-memory.dmp

          Filesize

          10.8MB

        • memory/2828-5-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-33-0x0000000001390000-0x0000000001E52000-memory.dmp

          Filesize

          10.8MB

        • memory/2828-1-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-34-0x0000000077140000-0x0000000077187000-memory.dmp

          Filesize

          284KB

        • memory/2828-37-0x0000000001390000-0x0000000001E52000-memory.dmp

          Filesize

          10.8MB

        • memory/2828-38-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-36-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-35-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-39-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-40-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-41-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-42-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-44-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-43-0x0000000074670000-0x0000000074D5E000-memory.dmp

          Filesize

          6.9MB

        • memory/2828-45-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-3-0x0000000077190000-0x00000000772A0000-memory.dmp

          Filesize

          1.1MB

        • memory/2828-2-0x0000000077140000-0x0000000077187000-memory.dmp

          Filesize

          284KB