Overview

overview

10

Static

static

3

c894ed7169...73.exe

windows10-2004-x64

10

c894ed7169...73.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/07/2026, 04:10

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General

  • Target
    c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973.exe
  • Size 643KB
  • Sample260718-erg4nsfz4l
  • SHA256 c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoordiscoveryexecutiondonutloadervalleyrat_s2loaderpersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • windonws.com:6667

Attributes
  • campaign_date

    2026. 6. 3

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    loaderdonutloader
  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

    backdoorvalleyrat_s2
  • Detects DonutLoader 2 IoCs
    loader
  • Detects ValleyRAT payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 44 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973.exe
    "C:\Users\Admin\AppData\Local\Temp\c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3232
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\中文包.bat" "
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:4668
    • C:\ProgramData\Telephony.exe
      "C:\ProgramData\Telephony.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:4176
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:2036
  • C:\ProgramData\Telephony.exe
    C:\ProgramData\Telephony.exe
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:4368

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        1.log
        • Path C:\ProgramData\1.log
        • Size 266KB
        • SHA256 534d71cadd3552439fd7de01b8eb92187bc084a922bc96af3fd63aed1b43d45c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Telephony.exe
        • Path C:\ProgramData\Telephony.exe
        • Size 150KB
        • SHA256 9b4e496e28d0dd2c22dafab7b91114d58be3c9f2b07eaa1200709b5fe84dd046
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        中文包.bat
        • Path C:\ProgramData\中文包.bat
        • Size 46B
        • SHA256 9f483fcda5bbb1209ac02f81fcb196c781e4799a9a047fc7ceaf6727bb86711a
        • MD5 SHA1 SHA512
        Submit Download

        memory/4176-21-0x00000000029F0000-0x0000000002A33000-memory.dmp
        Download

        memory/4176-23-0x0000000002D40000-0x0000000002D86000-memory.dmp
        Download

        memory/4368-26-0x00000000025F0000-0x0000000002636000-memory.dmp
        Download