Analysis

  • max time kernel
    144s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Executes dropped EXE 2 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 physical storage devices 1 TTPs

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

  • 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 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:2784
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Public\Libraries\LppkcfhhO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2464
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
        3⤵
          PID:2508
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
          3⤵
          • Enumerates system info in registry
          PID:2536
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:1736
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:2872
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:2736
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:3032
            • C:\Windows \System32\easinvoker.exe
              "C:\Windows \System32\easinvoker.exe"
              3⤵
              • Executes dropped EXE
              PID:1672
            • C:\Windows \System32\easinvoker.exe
              "C:\Windows \System32\easinvoker.exe"
              3⤵
              • Executes dropped EXE
              PID:1660
          • 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:1964
            • 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\ktfoipuvaulkreiwkdzeleoboqk"
              2⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:1952
            • 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\mvkhjifpwcdxtkeatolgorisxwtdokr"
              2⤵
              • Accesses Microsoft Outlook accounts
              PID:2824
            • 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\xqxrkaqqkkvceyselyyhzwdbfdlmpviowj"
              2⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1720

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                logs.dat

                • Path C:\ProgramData\remcos\logs.dat
                • Size 144B
                • SHA256 3a53c31bdedc8b97060c030be11bb14f7069fbca3e93bab8facd773413b3e24f
                • MD5 SHA1 SHA512

                94308059B57B3142E455B38A6EB92015

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                • Size 68KB
                • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
                • MD5 SHA1 SHA512 SSDEEP

                Tar44F3.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\Tar44F3.tmp
                • Size 177KB
                • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
                • MD5 SHA1 SHA512 SSDEEP

                ktfoipuvaulkreiwkdzeleoboqk

                • Path C:\Users\Admin\AppData\Local\Temp\ktfoipuvaulkreiwkdzeleoboqk
                • Size 2B
                • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
                • MD5 SHA1 SHA512

                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

                memory/1720-129-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/1720-127-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/1720-125-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/1720-120-0x0000000000400000-0x0000000000424000-memory.dmp

                memory/1952-113-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/1952-135-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/1952-119-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/1952-116-0x0000000000400000-0x0000000000478000-memory.dmp

                memory/2464-81-0x0000000000570000-0x0000000000571000-memory.dmp

                memory/2784-97-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-2-0x0000000003420000-0x0000000004420000-memory.dmp

                memory/2784-108-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-109-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-110-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-112-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-105-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-185-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-100-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-99-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-98-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-184-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-174-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-0-0x00000000003A0000-0x00000000003A1000-memory.dmp

                memory/2784-95-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-5-0x0000000000400000-0x0000000000598000-memory.dmp

                memory/2784-4-0x00000000003A0000-0x00000000003A1000-memory.dmp

                memory/2784-107-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-139-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-140-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-141-0x0000000015F20000-0x0000000015F39000-memory.dmp

                memory/2784-147-0x0000000015F20000-0x0000000015F39000-memory.dmp

                memory/2784-148-0x0000000015F20000-0x0000000015F39000-memory.dmp

                memory/2784-173-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-144-0x0000000015F20000-0x0000000015F39000-memory.dmp

                memory/2784-163-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-152-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2784-1-0x0000000003420000-0x0000000004420000-memory.dmp

                memory/2784-155-0x0000000015F20000-0x0000000015F39000-memory.dmp

                memory/2784-162-0x00000000160E0000-0x00000000170E0000-memory.dmp

                memory/2824-150-0x0000000000400000-0x0000000000462000-memory.dmp

                memory/2824-145-0x0000000000400000-0x0000000000462000-memory.dmp

                memory/2824-124-0x0000000000400000-0x0000000000462000-memory.dmp

                memory/2824-121-0x0000000000400000-0x0000000000462000-memory.dmp

                memory/2824-115-0x0000000000400000-0x0000000000462000-memory.dmp