Overview

overview

10

Static

static

5

PURCHASE O...96.exe

windows10-2004-x64

10

PURCHASE O...96.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250619-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2025, 17:49

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General

  • Target
    PURCHASE ORDER NO_76896.exe
  • Size 1.1MB
  • Sample250905-webjss1mt5
  • SHA256 40eef915ba2a07c79245cf756df19409e4ec1aedb063d7a2c7bc9e587d4951d8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
discoverydarkcloudpersistencestealer

Malware Config

Extracted

Family

  • darkcloud

C2

  • https://api.telegram.org/bot8365645575:AAEQT_N09lDjEsrpZTodZtDLEcItjKCUl6U/sendMessage?chat_id=6683518699

Signatures

  • DarkCloud

    An information stealer written in Visual Basic.

    stealerdarkcloud
  • Darkcloud family
    darkcloud
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • 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
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5040
    • C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
      2⤵
        PID:3492
      • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe
        "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:6028
        • C:\Windows\SysWOW64\svchost.exe
          "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
          3⤵
            PID:5564
          • C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe
            "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
            3⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:3868
            • C:\Windows\SysWOW64\svchost.exe
              "C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER NO_76896.exe"
              4⤵
              • Adds Run key to start application
              • Drops file in System32 directory
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of SetWindowsHookEx
              PID:2616
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3868 -s 688
              4⤵
              • Program crash
              PID:4436
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3868 -ip 3868
        1⤵
          PID:4292
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\flaker.exe
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:4732
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\flaker.exe
            C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\flaker.exe
            2⤵
            • Executes dropped EXE
            PID:1864

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              Milburt
              • Path C:\Users\Admin\AppData\Local\Temp\Milburt
              • Size 42KB
              • SHA256 3f6629642890910f31c38a4733b0a9ab69cb12ad4bf3d2756c860573c0e05194
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              aut54C7.tmp
              • Path C:\Users\Admin\AppData\Local\Temp\aut54C7.tmp
              • Size 10KB
              • SHA256 a4c4725ccd0ee231dccc9581959a5fc140a77a0f82540863e21f19d30ff9a371
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              aut55C2.tmp
              • Path C:\Users\Admin\AppData\Local\Temp\aut55C2.tmp
              • Size 221KB
              • SHA256 93bd539113f2a0e6d42d1dda4379f4d7fc6dbfea5844d19aa20498b37f65c824
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              trickstress
              • Path C:\Users\Admin\AppData\Local\Temp\trickstress
              • Size 296KB
              • SHA256 7be1bba36eb8603b32d206512cf21860a91998a07c10e4844584f892d7cfdfb5
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              LoginData
              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PBRJOPUE-Admin\LoginData
              • Size 56KB
              • SHA256 bb923abf471bb79086ff9ace293602e1ad882d9af7946dda17ff1c3a7e19f45b
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              WebData
              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\PBRJOPUE-Admin\WebData
              • Size 228KB
              • SHA256 3a07b3003758a79a574aa73032076567870389751f2a959537257070da3a10d8
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              flaker.exe
              • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\flaker.exe
              • Size 45KB
              • SHA256 5c3257b277f160109071e7e716040e67657341d8c42aa68d9afafe1630fcc53e
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              memory/2616-67-0x0000000000400000-0x000000000044B000-memory.dmp
              Download

              memory/2616-43-0x0000000000400000-0x000000000044B000-memory.dmp
              Download

              memory/2616-45-0x0000000000400000-0x000000000044B000-memory.dmp
              Download

              memory/3868-42-0x0000000000D50000-0x0000000001150000-memory.dmp
              Download

              memory/5040-12-0x0000000001130000-0x0000000001530000-memory.dmp
              Download

              memory/6028-27-0x0000000000DF0000-0x00000000011F0000-memory.dmp
              Download