Resubmissions

28/02/2024, 08:04

240228-jyrznseh7x 9

23/02/2024, 14:57

240223-sblc2sbe25 9

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 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
    • Checks computer location settings
    • Drops startup file
    • 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:4516
    • 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:1800

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          4KB

          MD5

          a5ce3aba68bdb438e98b1d0c70a3d95c

          SHA1

          013f5aa9057bf0b3c0c24824de9d075434501354

          SHA256

          9b860be98a046ea97a7f67b006e0b1bc9ab7731dd2a0f3a9fd3d710f6c43278a

          SHA512

          7446f1256873b51a59b9d2d3498cef5a41dbce55864c2a5fb8cb7d25f7d6e6d8ea249d551a45b75d99b1ad0d6fb4b5e4544e5ca77bcd627717d6598b5f566a79

        • memory/1800-46-0x00007FFE77BA0000-0x00007FFE78661000-memory.dmp

          Filesize

          10.8MB

        • memory/1800-45-0x00007FFE77BA0000-0x00007FFE78661000-memory.dmp

          Filesize

          10.8MB

        • memory/1800-41-0x0000000000300000-0x0000000000308000-memory.dmp

          Filesize

          32KB

        • memory/4516-18-0x0000000006360000-0x000000000639C000-memory.dmp

          Filesize

          240KB

        • memory/4516-21-0x00000000077A0000-0x0000000007D44000-memory.dmp

          Filesize

          5.6MB

        • memory/4516-6-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-7-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-8-0x0000000077C04000-0x0000000077C06000-memory.dmp

          Filesize

          8KB

        • memory/4516-13-0x0000000000D80000-0x0000000001842000-memory.dmp

          Filesize

          10.8MB

        • memory/4516-14-0x0000000000D80000-0x0000000001842000-memory.dmp

          Filesize

          10.8MB

        • memory/4516-15-0x0000000006AD0000-0x00000000070E8000-memory.dmp

          Filesize

          6.1MB

        • memory/4516-16-0x0000000006300000-0x0000000006312000-memory.dmp

          Filesize

          72KB

        • memory/4516-17-0x00000000064B0000-0x00000000065BA000-memory.dmp

          Filesize

          1.0MB

        • memory/4516-0-0x0000000000D80000-0x0000000001842000-memory.dmp

          Filesize

          10.8MB

        • memory/4516-19-0x00000000063A0000-0x00000000063EC000-memory.dmp

          Filesize

          304KB

        • memory/4516-20-0x0000000006690000-0x00000000066F6000-memory.dmp

          Filesize

          408KB

        • memory/4516-5-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-22-0x0000000007290000-0x0000000007322000-memory.dmp

          Filesize

          584KB

        • memory/4516-23-0x0000000007330000-0x00000000073A6000-memory.dmp

          Filesize

          472KB

        • memory/4516-24-0x0000000007430000-0x000000000744E000-memory.dmp

          Filesize

          120KB

        • memory/4516-25-0x0000000008320000-0x0000000008370000-memory.dmp

          Filesize

          320KB

        • memory/4516-26-0x00000000094A0000-0x0000000009662000-memory.dmp

          Filesize

          1.8MB

        • memory/4516-27-0x0000000009BA0000-0x000000000A0CC000-memory.dmp

          Filesize

          5.2MB

        • memory/4516-4-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-3-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-43-0x0000000000D80000-0x0000000001842000-memory.dmp

          Filesize

          10.8MB

        • memory/4516-44-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-2-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB

        • memory/4516-1-0x00000000767D0000-0x00000000768C0000-memory.dmp

          Filesize

          960KB