Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/07/2026, 12:15

General

  • Target
    123.exe
  • Size 584KB
  • Sample260705-pezhasf14n
  • SHA256 f65a25e37c7abc88d641e13004c4e5523502b4568cfcf6713f4f50e34f23e770
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • redosdru

C2
  • http://www.tgzh.club/NetSyst96.dll

Signatures

  • Family: Gh0strat

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

  • Family: Redosdru

    Redosdru is a loader/downloader written in C++.

  • Gh0st RAT payload 12 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • UPX packed file 15 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\123.exe
    "C:\Users\Admin\AppData\Local\Temp\123.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Program Files (x86)\Microsoft Owhrfh\Tlwguwa.exe
      "C:\Program Files (x86)\Microsoft Owhrfh\Tlwguwa.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2456
  • C:\Program Files (x86)\Microsoft Owhrfh\Tlwguwa.exe
    "C:\Program Files (x86)\Microsoft Owhrfh\Tlwguwa.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2452

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Tlwguwa.exe

        • Path C:\Program Files (x86)\Microsoft Owhrfh\Tlwguwa.exe
        • Size 584KB
        • SHA256 f65a25e37c7abc88d641e13004c4e5523502b4568cfcf6713f4f50e34f23e770
        • MD5 SHA1 SHA512 SSDEEP TLSH

        NetSyst96.dll

        • Path C:\Program Files\AppPatch\NetSyst96.dll
        • Size 239KB
        • SHA256 7baee22c9834bef64f0c1b7f5988d9717855942d87c82f019606d07589bc51a9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1904-4-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/1904-9-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/1904-7-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/1904-8-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2452-22-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2452-28-0x0000000010001000-0x000000001030F000-memory.dmp

        memory/2452-27-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2452-25-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2452-26-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-15-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-16-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-18-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-19-0x0000000074DA0000-0x0000000074DDB000-memory.dmp

        memory/2456-20-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-12-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-29-0x0000000010000000-0x000000001034B000-memory.dmp

        memory/2456-30-0x0000000074DA0000-0x0000000074DDB000-memory.dmp