Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 14:43

General

  • Target

    d23b1e9ce21335de1ccfebc24b556c14bf193fd025167d68e0af9e061f9b02bd.bat

  • Size

    4.7MB

  • MD5

    55f48dd51a9f5e43d1c206ad4f972661

  • SHA1

    dcdb11a9f0d5b2ac01600737f96383550096ac4a

  • SHA256

    d23b1e9ce21335de1ccfebc24b556c14bf193fd025167d68e0af9e061f9b02bd

  • SHA512

    08f343befefbeb42c302518092d3832f5b27e43fa9003a05822523b39ac38d53f49711af9dd165cbd1b1d906fdf711486ac875954990849007422971fee0ac1e

  • SSDEEP

    49152:KqDXIfW2UShFhv2Nym/GmpXhvPBi3M5xfrcjKiUns19M8X0KtC8v7sMDlZg6HcNn:R

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.216.139:44800

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-2Z66H0

  • 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 13 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
  • 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 8 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 61 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\d23b1e9ce21335de1ccfebc24b556c14bf193fd025167d68e0af9e061f9b02bd.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1548
    • C:\Windows\System32\extrac32.exe
      C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
      2⤵
        PID:2392
      • 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:2368
        • C:\Windows\system32\extrac32.exe
          extrac32.exe /C /Y C:\\Windows\\System32\\certutil.exe C:\\Users\\Public\\kn.exe
          3⤵
            PID:3144
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\d23b1e9ce21335de1ccfebc24b556c14bf193fd025167d68e0af9e061f9b02bd.bat" "C:\\Users\\Public\\disktop.ini" 9
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:4504
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\Users\Admin\AppData\Local\Temp\d23b1e9ce21335de1ccfebc24b556c14bf193fd025167d68e0af9e061f9b02bd.bat" "C:\\Users\\Public\\disktop.ini" 9
            3⤵
            • Executes dropped EXE
            PID:3888
        • C:\Users\Public\alpha.exe
          C:\\Users\\Public\\alpha /c C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\disktop.ini" "C:\\Users\\Public\\Libraries\\disktop.pif" 12
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:1756
          • C:\Users\Public\kn.exe
            C:\\Users\\Public\\kn -decodehex -F "C:\\Users\\Public\\disktop.ini" "C:\\Users\\Public\\Libraries\\disktop.pif" 12
            3⤵
            • Executes dropped EXE
            PID:2408
        • C:\Users\Public\Libraries\disktop.pif
          C:\Users\Public\Libraries\disktop.pif
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:636
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\CrccmoklO.bat" "
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:4436
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              4⤵
                PID:892
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
                4⤵
                • Enumerates system info in registry
                PID:4388
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                4⤵
                  PID:2344
                • C:\Windows\SysWOW64\xcopy.exe
                  xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
                  4⤵
                  • Enumerates system info in registry
                  PID:2224
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                  4⤵
                    PID:4016
                  • C:\Windows\SysWOW64\xcopy.exe
                    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
                    4⤵
                    • Enumerates system info in registry
                    PID:3908
                  • C:\Windows \System32\easinvoker.exe
                    "C:\Windows \System32\easinvoker.exe"
                    4⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:4788
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1716
                      • C:\Windows\System32\extrac32.exe
                        C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
                        6⤵
                          PID:1560
                        • C:\Users\Public\alpha.exe
                          C:\\Users\\Public\\alpha /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                          6⤵
                          • Executes dropped EXE
                          • Suspicious use of WriteProcessMemory
                          PID:1996
                          • 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:4256
                  • C:\Users\Public\Libraries\disktop.pif
                    C:\Users\Public\Libraries\disktop.pif /stext "C:\Users\Admin\AppData\Local\Temp\oxpjjpgwaxqh"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    PID:3760
                  • C:\Users\Public\Libraries\disktop.pif
                    C:\Users\Public\Libraries\disktop.pif /stext "C:\Users\Admin\AppData\Local\Temp\yrubchzqofiueuwy"
                    3⤵
                    • Executes dropped EXE
                    • Accesses Microsoft Outlook accounts
                    PID:1608
                  • C:\Users\Public\Libraries\disktop.pif
                    C:\Users\Public\Libraries\disktop.pif /stext "C:\Users\Admin\AppData\Local\Temp\jtaudakrcnazhisctyf"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2200
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c del "C:\Users\Public\disktop.ini" / A / F / Q / S
                  2⤵
                  • Executes dropped EXE
                  PID:2564
                • 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:1812

              Network

              MITRE ATT&CK Matrix ATT&CK v13

              Credential Access

              Unsecured Credentials

              1
              T1552

              Credentials In Files

              1
              T1552.001

              Discovery

              Query Registry

              1
              T1012

              System Information Discovery

              1
              T1082

              Collection

              Data from Local System

              1
              T1005

              Email Collection

              1
              T1114

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\remcos\logs.dat
                Filesize

                188B

                MD5

                5034d3cea33fa2c2eb29adb48a6925f9

                SHA1

                b5ec3941809fd827858f10a4b227ab80bea8bc9d

                SHA256

                15fabe0c9698282e897cc5a0ea76891bcd64d3cf7dba233e807e6eeef8ea11f6

                SHA512

                3508851d5580230143c81aa40e1bb84a55e1094d801c228616e79a834bec467cc1f41155646649a7301391b3b92a4c4c4c30ca5622bf465f607c0e56d1033c66

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vi44d4s3.ub4.ps1
                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • C:\Users\Admin\AppData\Local\Temp\oxpjjpgwaxqh
                Filesize

                4KB

                MD5

                758a04b957a9e217fe0f6a62bbd3c29e

                SHA1

                aca18d2a0f1847d49245cbc59a46c9fb8aab123a

                SHA256

                698768bf8e771c459d87a836723028bcf3e464a48961ca36cfa2d7d7ebbd5b1c

                SHA512

                1d15756acdb1e64dad35ed5808a9669b3157d65b8e93a5c9d9bcf4e014ccaa639db9c65c5514cc0e9067291566ae858a46c4649039187bfe59725139b6cc147e

              • C:\Users\Public\Libraries\CrccmoklO.bat
                Filesize

                29KB

                MD5

                828ffbf60677999579dafe4bf3919c63

                SHA1

                a0d159a1b9a49e9eaccc53fe0c3266c0526a1bdc

                SHA256

                abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d

                SHA512

                bf00909e24c5a6fb2346e8457a9adacd5f1b35988d90abbde9ff26896bbb59edafea60d9db4d10182a7b5e129bb69585d3e20bc5c63af3517b3a7ef1e45ffb7e

              • C:\Users\Public\Libraries\aaa.bat
                Filesize

                3KB

                MD5

                71e46efe9932b83b397b44052513fb49

                SHA1

                741af3b8c31095a0cc2c39c41e62279684913205

                SHA256

                11c20fabf677cd77e8a354b520f6ffca09cac37ce15c9932550e749e49efe08a

                SHA512

                76da3b441c0eaaaabdd4d21b0a3d4aa7fd49d73a5f0dab2cfb39f2e114efe4f4dabe2d46b01b66d810d6e0efa97676599ece5c213c1a69a5f2f4897a9b4ac8da

              • C:\Users\Public\Libraries\disktop.pif
                Filesize

                1.7MB

                MD5

                2c2669d4ac3f6c83a72b2c6eecb57368

                SHA1

                448318f3d65cb965ece84fa6f7000cf4af374366

                SHA256

                7a8be3eba0171a9ee5bf7ed6359181ec36676bc0434acbb106af0a57829aca74

                SHA512

                369de9b34af19530c12f61c481debae35df065ea13cd15e096a8444c612045cbe93a52e80b02d586740bca10289e204b3c37284c9a67b1ebb345f95f2fc3410f

              • C:\Users\Public\Libraries\easinvoker.exe
                Filesize

                128KB

                MD5

                231ce1e1d7d98b44371ffff407d68b59

                SHA1

                25510d0f6353dbf0c9f72fc880de7585e34b28ff

                SHA256

                30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

                SHA512

                520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

              • C:\Users\Public\Libraries\netutils.dll
                Filesize

                114KB

                MD5

                566b326055c3ed8e2028aa1e2c1054d0

                SHA1

                c25fa6d6369c083526cafcf45b5f554635afe218

                SHA256

                a692d4305b95e57e2cfc871d53a41a5bfc9e306cb1a86ca1159db4f469598714

                SHA512

                da4b0b45d47757b69f9abc1817d3cb3c85deb08658e55f07b016fba053efe541a5791b9b2b380c25b440bbae6916c5a2245261553ca3c5025d9d55c943f9823c

              • C:\Users\Public\alpha.exe
                Filesize

                283KB

                MD5

                8a2122e8162dbef04694b9c3e0b6cdee

                SHA1

                f1efb0fddc156e4c61c5f78a54700e4e7984d55d

                SHA256

                b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450

                SHA512

                99e784141193275d4364ba1b8762b07cc150ca3cb7e9aa1d4386ba1fa87e073d0500e61572f8d1b071f2faa2a51bb123e12d9d07054b59a1a2fd768ad9f24397

              • C:\Users\Public\disktop.ini
                Filesize

                3.4MB

                MD5

                942dc36e982c57b8aee62a93c1881bdc

                SHA1

                1c0c70085134d166309a3748466f2cc33c1e1947

                SHA256

                b4d43caf6a7c83b7e5f9d3eddd640649dcd323cbb9764a5dd750a3d5022f49cc

                SHA512

                fce82b46a6595df3b2b38dc8253369c4b897b454d47441c79e84f522002c9718e5cc28811812ad1e189ca2a13a952e81fdfff15a51998aa3db1aa94b92f2530c

              • C:\Users\Public\kn.exe
                Filesize

                1.6MB

                MD5

                bd8d9943a9b1def98eb83e0fa48796c2

                SHA1

                70e89852f023ab7cde0173eda1208dbb580f1e4f

                SHA256

                8de7b4eb1301d6cbe4ea2c8d13b83280453eb64e3b3c80756bbd1560d65ca4d2

                SHA512

                95630fdddad5db60cc97ec76ee1ca02dbb00ee3de7d6957ecda8968570e067ab2a9df1cc07a3ce61161a994acbe8417c83661320b54d04609818009a82552f7b

              • memory/636-81-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-136-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-169-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-168-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-158-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-157-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-147-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-146-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-75-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-76-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-78-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-79-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-80-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-125-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-82-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-83-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-86-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-85-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-30-0x0000000002970000-0x0000000003970000-memory.dmp
                Filesize

                16.0MB

              • memory/636-58-0x0000000000400000-0x00000000005BC000-memory.dmp
                Filesize

                1.7MB

              • memory/636-124-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-135-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-28-0x00000000024E0000-0x00000000024E1000-memory.dmp
                Filesize

                4KB

              • memory/636-122-0x0000000033CD0000-0x0000000033CE9000-memory.dmp
                Filesize

                100KB

              • memory/636-121-0x0000000014F80000-0x0000000015F80000-memory.dmp
                Filesize

                16.0MB

              • memory/636-116-0x0000000033CD0000-0x0000000033CE9000-memory.dmp
                Filesize

                100KB

              • memory/636-119-0x0000000033CD0000-0x0000000033CE9000-memory.dmp
                Filesize

                100KB

              • memory/636-120-0x0000000033CD0000-0x0000000033CE9000-memory.dmp
                Filesize

                100KB

              • memory/636-29-0x0000000002970000-0x0000000003970000-memory.dmp
                Filesize

                16.0MB

              • memory/1608-105-0x0000000000400000-0x0000000000462000-memory.dmp
                Filesize

                392KB

              • memory/1608-104-0x0000000000400000-0x0000000000462000-memory.dmp
                Filesize

                392KB

              • memory/1608-109-0x0000000000400000-0x0000000000462000-memory.dmp
                Filesize

                392KB

              • memory/1608-97-0x0000000000400000-0x0000000000462000-memory.dmp
                Filesize

                392KB

              • memory/1608-91-0x0000000000400000-0x0000000000462000-memory.dmp
                Filesize

                392KB

              • memory/2200-110-0x0000000000430000-0x00000000004F9000-memory.dmp
                Filesize

                804KB

              • memory/2200-111-0x0000000000400000-0x0000000000424000-memory.dmp
                Filesize

                144KB

              • memory/2200-108-0x0000000000400000-0x0000000000424000-memory.dmp
                Filesize

                144KB

              • memory/2200-107-0x0000000000400000-0x0000000000424000-memory.dmp
                Filesize

                144KB

              • memory/2200-98-0x0000000000400000-0x0000000000424000-memory.dmp
                Filesize

                144KB

              • memory/3760-88-0x0000000000400000-0x0000000000478000-memory.dmp
                Filesize

                480KB

              • memory/3760-113-0x0000000000400000-0x0000000000478000-memory.dmp
                Filesize

                480KB

              • memory/3760-96-0x0000000000400000-0x0000000000478000-memory.dmp
                Filesize

                480KB

              • memory/3760-92-0x0000000000400000-0x0000000000478000-memory.dmp
                Filesize

                480KB

              • memory/4256-74-0x00007FFA81540000-0x00007FFA82001000-memory.dmp
                Filesize

                10.8MB

              • memory/4256-71-0x000001FD3DDC0000-0x000001FD3DDD0000-memory.dmp
                Filesize

                64KB

              • memory/4256-70-0x000001FD3DDC0000-0x000001FD3DDD0000-memory.dmp
                Filesize

                64KB

              • memory/4256-69-0x00007FFA81540000-0x00007FFA82001000-memory.dmp
                Filesize

                10.8MB

              • memory/4256-65-0x000001FD3E310000-0x000001FD3E332000-memory.dmp
                Filesize

                136KB

              • memory/4788-51-0x00000000613C0000-0x00000000613E3000-memory.dmp
                Filesize

                140KB