Analysis

  • max time kernel
    147s
  • 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
    13/06/2024, 01:23

General

  • Target
    768fe2181e2f8595d84ccd19ea882ebb6632482ee4ad4954637289a278d27a85.exe
  • Size 4.1MB
  • Sample240613-brv4rasflk
  • SHA256 768fe2181e2f8595d84ccd19ea882ebb6632482ee4ad4954637289a278d27a85
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Gh0st RAT payload 4 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • UPX dump on OEP (original entry point) 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 16 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 30 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\768fe2181e2f8595d84ccd19ea882ebb6632482ee4ad4954637289a278d27a85.exe
    "C:\Users\Admin\AppData\Local\Temp\768fe2181e2f8595d84ccd19ea882ebb6632482ee4ad4954637289a278d27a85.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4620
    • C:\Program Files\218218218\tt.exe
      "C:\Program Files\218218218\tt.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5556
      • C:\Program Files (x86)\kpzs\bin\kpzs.exe
        "C:\Program Files (x86)\kpzs\bin\kpzs.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:5768
      • C:\Program Files (x86)\kpzs\bin\kpzs.exe
        "C:\Program Files (x86)\kpzs\bin\kpzs.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:5804
      • C:\Program Files\218218218\EP.exe
        "C:\Program Files\218218218\EP.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2992
        • C:\Program Files\218218218\EP.exe
          "C:\Program Files\218218218\EP.exe"
          4⤵
          • Executes dropped EXE
          • Enumerates connected drives
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3624
      • C:\Program Files (x86)\kpzs\bin\kpzs.exe
        "C:\Program Files (x86)\kpzs\bin\kpzs.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1280
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {c08afd90-f2a1-11d1-8455-00a0c91f3880} -Embedding
    1⤵
      PID:5356
    • C:\Program Files (x86)\kpzs\bin\kpzs.exe
      "C:\Program Files (x86)\kpzs\bin\kpzs.exe" "C:\Users\Admin\AppData\Local\Temp\\213E32F56AB44875A891DC.lnk"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      PID:1940
    • C:\Program Files (x86)\kpzs\bin\kpzs.exe
      "C:\Program Files (x86)\kpzs\bin\kpzs.exe" "C:\Users\Admin\AppData\Local\Temp\\AD5819DC6983472892A4D6.lnk"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      PID:5788
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:5196

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            12345678.exe

            • Path C:\Program Files\218218218\12345678.exe
            • Size 302KB
            • SHA256 f8b93502b5d4a2d8180acd6bdf0a855146df0eeec437dfa3b5ee35059d8791a3
            • MD5 SHA1 SHA512 SSDEEP

            DTLUI.dll

            • Path C:\Program Files\218218218\DTLUI.dll
            • Size 2.4MB
            • SHA256 0e2493de858d0690219ef6ad3ab9fc7567825272fb68db3c288f601513fb59bf
            • MD5 SHA1 SHA512 SSDEEP

            EP.exe

            • Path C:\Program Files\218218218\EP.exe
            • Size 1.1MB
            • SHA256 37865f209c91b291282c51515a868e6993070d3d7594cf931b42f5a6a8f09a3a
            • MD5 SHA1 SHA512 SSDEEP

            XPFarmer.bpl

            • Path C:\Program Files\218218218\XPFarmer.bpl
            • Size 1.5MB
            • SHA256 a2b6b2c4e1a49809936780149416e8cbb793a0631f81f746350c3c06fcd2bc8e
            • MD5 SHA1 SHA512 SSDEEP

            kpzs.exe

            • Path C:\Program Files\218218218\kpzs.exe
            • Size 72KB
            • SHA256 8ce68528e25b86977f18d42c8c5dddbd6e6f24f34a340d447f4b4db0cb96bfbe
            • MD5 SHA1 SHA512 SSDEEP

            msvcp100.dll

            • Path C:\Program Files\218218218\msvcp100.dll
            • Size 411KB
            • SHA256 d769fafa2b3232de9fa7153212ba287f68e745257f1c00fafb511e7a02de7adf
            • MD5 SHA1 SHA512 SSDEEP

            msvcr100.dll

            • Path C:\Program Files\218218218\msvcr100.dll
            • Size 755KB
            • SHA256 60c06e0fa4449314da3a0a87c1a9d9577df99226f943637e06f61188e5862efa
            • MD5 SHA1 SHA512 SSDEEP

            rtl70.bpl

            • Path C:\Program Files\218218218\rtl70.bpl
            • Size 1.2MB
            • SHA256 b73f521981a27dec5af0c7b21e2a42e89f4423d996a1c6d6317ee7f05955af4a
            • MD5 SHA1 SHA512 SSDEEP

            tt.exe

            • Path C:\Program Files\218218218\tt.exe
            • Size 216KB
            • SHA256 a937d9295271cc131a2e019dd41ce4ead3bca2d5115fb7d7482508297971b17e
            • MD5 SHA1 SHA512 SSDEEP

            vcl70.bpl

            • Path C:\Program Files\218218218\vcl70.bpl
            • Size 1.3MB
            • SHA256 a7a26cbf6968063c51d4d70f4599f295e4a88e352f19bdd475f3416e6411c390
            • MD5 SHA1 SHA512 SSDEEP

            20240613012323483~YingInstall-TopFramePicture.bmp

            • Path C:\Users\Admin\AppData\Local\Temp\20240613012323483~YingInstall-TopFramePicture.bmp
            • Size 563KB
            • SHA256 d9295a5e215cf9f1c2dd5b9aa5deb1ee46619202b5814296ca73777506846608
            • MD5 SHA1 SHA512 SSDEEP

            memory/2992-103-0x0000000000400000-0x0000000000528000-memory.dmp

            memory/2992-104-0x00000000400C0000-0x0000000040218000-memory.dmp

            memory/2992-98-0x0000000000A10000-0x0000000000B8A000-memory.dmp

            memory/2992-105-0x0000000000A10000-0x0000000000B8A000-memory.dmp

            memory/3624-102-0x0000000000400000-0x000000000044D000-memory.dmp

            memory/3624-106-0x0000000010000000-0x000000001018F000-memory.dmp

            memory/3624-110-0x0000000010000000-0x000000001018F000-memory.dmp

            memory/3624-108-0x0000000010000000-0x000000001018F000-memory.dmp

            memory/3624-100-0x0000000000400000-0x000000000044D000-memory.dmp

            memory/3624-109-0x0000000010000000-0x000000001018F000-memory.dmp

            memory/3624-111-0x0000000010000000-0x000000001018F000-memory.dmp

            memory/3624-119-0x0000000000400000-0x000000000044D000-memory.dmp