Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    12/10/2026, 04:12

General

  • Target
    0690572add22e5e9170c8a7878af06ef5416861392b957db53fb829903f8fd15.exe
  • Size 4.1MB
  • Sample261012-esnb3s1thy
  • SHA256 0690572add22e5e9170c8a7878af06ef5416861392b957db53fb829903f8fd15
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • fatalrat

C2
  • http://www.taobao.com/help/getip.php

  • https://vv.video.qq.com/checktime?otype=ojson

  • https://searchplugin.csdn.net/api/v1/ip/get?ip=

  • https://www.ipplus360.com/getIP

Signatures

  • Family: FatalRat

    FatalRat is a modular infostealer family written in C++ first appearing in June 2021.

  • Fatal Rat payload 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 7 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates video capture drivers 2 TTPs 1 IoCs

    Queries the legacy Video for Windows capture drivers. This is commonly abused by RATs to check for available webcams on the system before reporting to their C2.

  • 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.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 11 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.

  • Delays execution with timeout.exe 6 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0690572add22e5e9170c8a7878af06ef5416861392b957db53fb829903f8fd15.exe
    "C:\Users\Admin\AppData\Local\Temp\0690572add22e5e9170c8a7878af06ef5416861392b957db53fb829903f8fd15.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2832
    • C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe
      "C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Enumerates video capture drivers
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4244
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe.bat""
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:516
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4640
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3860
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2476
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3600
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4208
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3244
  • C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe
    "C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    PID:4724
  • C:\Windows\SysUtilSvc.exe
    C:\Windows\SysUtilSvc.exe
    1⤵
    • Executes dropped EXE
    • Drops file in Program Files directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:992

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        DropboxCrashHandler.exe

        • Path C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe
        • Size 130KB
        • SHA256 e7141aeb22ea3165a4f7fb8c4d210151575f1b95ef545e0978a2174598a08265
        • MD5 SHA1 SHA512 SSDEEP TLSH

        DropboxCrashHandler.exe.bat

        • Path C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\DropboxCrashHandler.exe.bat
        • Size 299B
        • SHA256 b1fac2aaeb3f84f80604c117417087294db40d35fac78a2097a034cbfecedb27
        • MD5 SHA1 SHA512 TLSH

        SVP7.PNG

        • Path C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\SVP7.PNG
        • Size 195KB
        • SHA256 a9ea7566f183454d25ff53b6fc20d2fde9353ff37f78fd8757fb9d8f4f33d1cb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        goopdate.dll

        • Path C:\Program Files (x86)\Dropbox\Update\1.3.5055.162\goopdate.dll
        • Size 42KB
        • SHA256 a7d07b13f6fc72ff905c69579f9be0cec237fc6df97b0d24e51ba44129831caa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        3FE2BD01AB6BC312BF0DADE7F797388F_D700B3BF42AE699B26DDBDD3E4CB7EDD

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3FE2BD01AB6BC312BF0DADE7F797388F_D700B3BF42AE699B26DDBDD3E4CB7EDD
        • Size 471B
        • SHA256 9c97757e032f15c4bf46af06f611fe050e3bdd3e218dca956b4ecfada28502f2
        • MD5 SHA1 SHA512 TLSH

        ACF36929369259566C0D9BA6E8069883

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\ACF36929369259566C0D9BA6E8069883
        • Size 727B
        • SHA256 06d07e79e6703c2f9c88922d62e49f55eb2f4ef05d29a863662c142426da2678
        • MD5 SHA1 SHA512 TLSH

        E2C6CBAF0AF08CF203BA74BF0D0AB6D5_7F584189DFCC61AA971930CA5AED3120

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_7F584189DFCC61AA971930CA5AED3120
        • Size 471B
        • SHA256 9faa33967e71e81c38d5f8f2e52c1fbb8b127287f8ba13e0cdf24aeb748d2443
        • MD5 SHA1 SHA512 TLSH

        3FE2BD01AB6BC312BF0DADE7F797388F_D700B3BF42AE699B26DDBDD3E4CB7EDD

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3FE2BD01AB6BC312BF0DADE7F797388F_D700B3BF42AE699B26DDBDD3E4CB7EDD
        • Size 402B
        • SHA256 06f5cc435ba52045e9b5e6110201a4481c0b736bf0726ef08a6ed6f1506feab2
        • MD5 SHA1 SHA512 TLSH

        ACF36929369259566C0D9BA6E8069883

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\ACF36929369259566C0D9BA6E8069883
        • Size 400B
        • SHA256 bad551aa3c3573afeda7aab54453d2df7701355b7cdf907fdee48bb223130801
        • MD5 SHA1 SHA512 TLSH

        E2C6CBAF0AF08CF203BA74BF0D0AB6D5_7F584189DFCC61AA971930CA5AED3120

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_7F584189DFCC61AA971930CA5AED3120
        • Size 412B
        • SHA256 8f98846470bb776a540840b3076dcda4542cf7ba3a94fbad3291c5c87c17ff66
        • MD5 SHA1 SHA512 TLSH

        SysUtilSvc.exe

        • Path C:\Windows\SysUtilSvc.exe
        • Size 4.1MB
        • SHA256 0690572add22e5e9170c8a7878af06ef5416861392b957db53fb829903f8fd15
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4244-21-0x00000000009F0000-0x0000000000A19000-memory.dmp

        memory/4244-18-0x0000000010000000-0x0000000010030000-memory.dmp