Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/04/2024, 12:28

General

  • Target
    SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe
  • Size 1.6MB
  • Sample240422-pnbgtsbc39
  • SHA256 cf10c660707993307c44880f02405f59c2970b4de12bfb3d53a593d002c01908
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 127.0.0.1:45671

  • 127.0.0.1:55677

  • 192.3.101.8:55677

  • 192.3.101.8:45671

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-2P1XPK

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • ModiLoader Second Stage 1 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\LppkcfhhO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2932
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
        3⤵
          PID:1980
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
          3⤵
          • Enumerates system info in registry
          PID:1864
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:1540
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:3552
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:4560
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:3012
            • C:\Windows \System32\easinvoker.exe
              "C:\Windows \System32\easinvoker.exe"
              3⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:4488
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:4084
                • C:\Windows\System32\extrac32.exe
                  C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
                  5⤵
                    PID:3372
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                    5⤵
                    • Executes dropped EXE
                    • Suspicious use of WriteProcessMemory
                    PID:2072
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                      6⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3436
            • C:\Windows\SysWOW64\extrac32.exe
              C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe C:\\Users\\Public\\Libraries\\Lppkcfhh.PIF
              2⤵
                PID:2404
              • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe
                C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe /stext "C:\Users\Admin\AppData\Local\Temp\ragxz"
                2⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:628
              • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe
                C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe /stext "C:\Users\Admin\AppData\Local\Temp\bcmqadjq"
                2⤵
                • Accesses Microsoft Outlook accounts
                PID:1980
              • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe
                C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.9491.24773.exe /stext "C:\Users\Admin\AppData\Local\Temp\lwzabvusmuiy"
                2⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3476
            • 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=3624 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
              1⤵
                PID:4896

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    logs.dat

                    • Path C:\ProgramData\remcos\logs.dat
                    • Size 144B
                    • SHA256 882c0783670de7aeb55f1bea0aebc24498441df85622e91a9c3b222ac20f156c
                    • MD5 SHA1 SHA512

                    __PSScriptPolicyTest_t5hy45b4.0xw.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t5hy45b4.0xw.ps1
                    • Size 60B
                    • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                    • MD5 SHA1 SHA512

                    ragxz

                    • Path C:\Users\Admin\AppData\Local\Temp\ragxz
                    • Size 4KB
                    • SHA256 7176ca3d0196ec46f178107fdb587adaef3f6ea65daa80eccd2371a515880e04
                    • MD5 SHA1 SHA512 SSDEEP

                    LppkcfhhO.bat

                    • Path C:\Users\Public\Libraries\LppkcfhhO.bat
                    • Size 29KB
                    • SHA256 abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d
                    • MD5 SHA1 SHA512 SSDEEP

                    aaa.bat

                    • Path C:\Users\Public\Libraries\aaa.bat
                    • Size 3KB
                    • SHA256 11c20fabf677cd77e8a354b520f6ffca09cac37ce15c9932550e749e49efe08a
                    • MD5 SHA1 SHA512

                    easinvoker.exe

                    • Path C:\Users\Public\Libraries\easinvoker.exe
                    • Size 128KB
                    • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
                    • MD5 SHA1 SHA512 SSDEEP

                    netutils.dll

                    • Path C:\Users\Public\Libraries\netutils.dll
                    • Size 114KB
                    • SHA256 a692d4305b95e57e2cfc871d53a41a5bfc9e306cb1a86ca1159db4f469598714
                    • MD5 SHA1 SHA512 SSDEEP

                    alpha.exe

                    • Path C:\Users\Public\alpha.exe
                    • Size 283KB
                    • SHA256 b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/628-81-0x0000000000400000-0x0000000000478000-memory.dmp

                    memory/628-78-0x0000000000400000-0x0000000000478000-memory.dmp

                    memory/628-74-0x0000000000400000-0x0000000000478000-memory.dmp

                    memory/628-103-0x0000000000400000-0x0000000000478000-memory.dmp

                    memory/628-82-0x0000000000400000-0x0000000000478000-memory.dmp

                    memory/1980-93-0x0000000000400000-0x0000000000462000-memory.dmp

                    memory/1980-86-0x0000000000400000-0x0000000000462000-memory.dmp

                    memory/1980-75-0x0000000000400000-0x0000000000462000-memory.dmp

                    memory/1980-79-0x0000000000400000-0x0000000000462000-memory.dmp

                    memory/3436-32-0x000001D5C62B0000-0x000001D5C62D2000-memory.dmp

                    memory/3436-48-0x00007FFC4DC80000-0x00007FFC4E741000-memory.dmp

                    memory/3436-43-0x000001D5DE400000-0x000001D5DE410000-memory.dmp

                    memory/3436-45-0x000001D5DE400000-0x000001D5DE410000-memory.dmp

                    memory/3436-42-0x00007FFC4DC80000-0x00007FFC4E741000-memory.dmp

                    memory/3476-92-0x0000000000430000-0x00000000004F9000-memory.dmp

                    memory/3476-80-0x0000000000400000-0x0000000000424000-memory.dmp

                    memory/3476-94-0x0000000000400000-0x0000000000424000-memory.dmp

                    memory/3476-88-0x0000000000400000-0x0000000000424000-memory.dmp

                    memory/3476-84-0x0000000000400000-0x0000000000424000-memory.dmp

                    memory/4488-24-0x00000000613C0000-0x00000000613E3000-memory.dmp

                    memory/5080-58-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-0-0x00000000007A0000-0x00000000007A1000-memory.dmp

                    memory/5080-59-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-65-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-73-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-57-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-56-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-54-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-71-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-44-0x00000000007A0000-0x00000000007A1000-memory.dmp

                    memory/5080-70-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-68-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-66-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-63-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-4-0x0000000000400000-0x0000000000598000-memory.dmp

                    memory/5080-106-0x000000002DD40000-0x000000002DD59000-memory.dmp

                    memory/5080-109-0x000000002DD40000-0x000000002DD59000-memory.dmp

                    memory/5080-110-0x000000002DD40000-0x000000002DD59000-memory.dmp

                    memory/5080-2-0x0000000002EE0000-0x0000000003EE0000-memory.dmp

                    memory/5080-113-0x000000002DD40000-0x000000002DD59000-memory.dmp

                    memory/5080-112-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-1-0x0000000002EE0000-0x0000000003EE0000-memory.dmp

                    memory/5080-121-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-122-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-132-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-134-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-144-0x00000000158A0000-0x00000000168A0000-memory.dmp

                    memory/5080-145-0x00000000158A0000-0x00000000168A0000-memory.dmp