Analysis

  • max time kernel
    31s
  • max time network
    32s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06-10-2024 11:50

General

  • Target

    GrabberBuilder.exe

  • Size

    3.4MB

  • MD5

    fb7b19adc02c514e4e396b0184fe4d5b

  • SHA1

    7067272c1aa7dcb9cbe37699da88e18ddcd4e616

  • SHA256

    56f44437618196097836457153108f24370c94cad2f078076e96221797ddff10

  • SHA512

    5df96dabef422b22d54a884289b80d028c8cc0d5cf095d032d5126002c04e826090f61ed549d800a28945f7afcbd7c74debcd65948de01b12463127d1750bc40

  • SSDEEP

    98304:pcO+IuSn/xejlEvsJyrNyPL3Prc/BJUvju+wp:tZr/2xyUPLYZJU6

Malware Config

Signatures

  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 2 IoCs
  • 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.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 29 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe
    "C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2088
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2096
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\SubmitApprove.gif
    1⤵
    • Modifies Internet Explorer settings
    PID:2332

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

    Filesize

    10KB

    MD5

    cd6829f53a60318a54648f4ff9d694c2

    SHA1

    eda672c23f219a9cdbe740079412f5fbe04a157d

    SHA256

    5410184dfd5ef071de14c78cc7e9488049a85e313a3454250d53e974251ac906

    SHA512

    25a54ac013419868211b704a9b1f4cbc7c0a5b1a0e10cec09cd8eee3fbde7497e36c8e35f0506622eb9a47939c2c6b9590bf9bbf8d43508be13d7f85f7838ec9

  • memory/2088-9-0x0000000003150000-0x0000000003162000-memory.dmp

    Filesize

    72KB

  • memory/2088-6-0x0000000000400000-0x0000000000D28000-memory.dmp

    Filesize

    9.2MB

  • memory/2088-10-0x0000000003170000-0x00000000031AC000-memory.dmp

    Filesize

    240KB

  • memory/2088-4-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-11-0x00000000031D0000-0x000000000321C000-memory.dmp

    Filesize

    304KB

  • memory/2088-7-0x0000000000400000-0x0000000000D28000-memory.dmp

    Filesize

    9.2MB

  • memory/2088-8-0x0000000005440000-0x0000000005A58000-memory.dmp

    Filesize

    6.1MB

  • memory/2088-12-0x0000000005B90000-0x0000000005C9A000-memory.dmp

    Filesize

    1.0MB

  • memory/2088-2-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-3-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-0-0x0000000000400000-0x0000000000D28000-memory.dmp

    Filesize

    9.2MB

  • memory/2088-13-0x0000000000400000-0x0000000000D28000-memory.dmp

    Filesize

    9.2MB

  • memory/2088-14-0x0000000076726000-0x0000000076727000-memory.dmp

    Filesize

    4KB

  • memory/2088-15-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-16-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-18-0x0000000076710000-0x0000000076800000-memory.dmp

    Filesize

    960KB

  • memory/2088-1-0x0000000076726000-0x0000000076727000-memory.dmp

    Filesize

    4KB