Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    01-09-2024 04:36

General

  • Target

    C8DA5E64C79548B8447B7544517442DB.exe

  • Size

    1006KB

  • MD5

    c8da5e64c79548b8447b7544517442db

  • SHA1

    e8bc50e2f1fe84fe96523a40d2a0abfd01c72bf7

  • SHA256

    61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f

  • SHA512

    1d3e062b225f87bc1bde79b25b9bdd0499eda092817b83436d1f1760da9a928f9dcf07456485ce472559f7f4b6e5e7ac0a7af1069cbc1983be0d906cac4893e1

  • SSDEEP

    24576:/doEWj+MjS9+ZW8Z6+soNQMOHGRukDq7IR0RJgU:i1jm+w8dCHGRuEq7IRqh

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.89.247.135:2404

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-7IHQDG

  • 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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
    "C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\unpuLJjbqcRkR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\unpuLJjbqcRkR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp24B0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2664
    • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
      "C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe"
      2⤵
        PID:2724
      • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
        "C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
          C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
          3⤵
            PID:1644
          • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
            C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
            3⤵
              PID:1872
            • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
              C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
              3⤵
                PID:2824
              • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
                3⤵
                  PID:2836
                • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                  C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
                  3⤵
                    PID:1348
                  • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                    C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
                    3⤵
                      PID:2832
                    • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                      C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\farvv"
                      3⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1968
                    • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                      C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\ivefwslw"
                      3⤵
                        PID:1844
                      • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                        C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\ivefwslw"
                        3⤵
                          PID:1956
                        • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                          C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\ivefwslw"
                          3⤵
                          • Accesses Microsoft Outlook accounts
                          • System Location Discovery: System Language Discovery
                          PID:1984
                        • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                          C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxjywlwqtom"
                          3⤵
                            PID:1988
                          • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
                            C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxjywlwqtom"
                            3⤵
                            • System Location Discovery: System Language Discovery
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2284

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

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

                        Filesize

                        2B

                        MD5

                        f3b25701fe362ec84616a93a45ce9998

                        SHA1

                        d62636d8caec13f04e28442a0a6fa1afeb024bbb

                        SHA256

                        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                        SHA512

                        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                      • C:\Users\Admin\AppData\Local\Temp\tmp24B0.tmp

                        Filesize

                        1KB

                        MD5

                        2d46d03d96f68a816a708b21fb915e0d

                        SHA1

                        19b8ec236835354204e912f9b5c43d9cf7cb32c4

                        SHA256

                        06d7a3b74e89f815ac7133d31fc4016dfd7d45f440914752a4c13c1959f336da

                        SHA512

                        272b52112356e44098f63cd07dc648c2f54193a29acb0059ee7e8f0e24a05fd5828bee079ed2f1640d41dc3000d97b9201181b5ae5507f3b563a1549ce78aca0

                      • memory/1968-42-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1968-46-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1968-41-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1984-47-0x0000000000400000-0x0000000000462000-memory.dmp

                        Filesize

                        392KB

                      • memory/1984-45-0x0000000000400000-0x0000000000462000-memory.dmp

                        Filesize

                        392KB

                      • memory/1984-44-0x0000000000400000-0x0000000000462000-memory.dmp

                        Filesize

                        392KB

                      • memory/2284-49-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/2284-50-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/2284-51-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/2488-6-0x0000000004E50000-0x0000000004F10000-memory.dmp

                        Filesize

                        768KB

                      • memory/2488-5-0x0000000074280000-0x000000007496E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2488-33-0x0000000074280000-0x000000007496E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2488-0-0x000000007428E000-0x000000007428F000-memory.dmp

                        Filesize

                        4KB

                      • memory/2488-4-0x000000007428E000-0x000000007428F000-memory.dmp

                        Filesize

                        4KB

                      • memory/2488-3-0x0000000001DF0000-0x0000000001E08000-memory.dmp

                        Filesize

                        96KB

                      • memory/2488-2-0x0000000074280000-0x000000007496E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2488-1-0x0000000000120000-0x0000000000222000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/2808-38-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-14-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-18-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-36-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-37-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-22-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-39-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-24-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-26-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/2808-29-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-30-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-31-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-32-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-16-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-20-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-57-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-12-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-60-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-59-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-61-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2808-65-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2808-64-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2808-66-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-67-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-68-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-69-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-70-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-71-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-72-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-73-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2808-74-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB