Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    17-04-2024 14:28

General

  • Target

    344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe

  • Size

    966KB

  • MD5

    1291a06a395fb852059a6ceb0e3eeb26

  • SHA1

    d2817ad9ae07ebac664f4ecc73094847266592fe

  • SHA256

    344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549

  • SHA512

    2523049d9fd6aaf796a8cef7f452379a9b875bfc047aae0bdf191f2c9eb5cb0825fb2cec2716e86834182d0c1380fd78a396bd31ad7e255d7bdfeebcf47fc21f

  • SSDEEP

    24576:b1Dxc69WYtZlNj16hhTaQabNSXgOf5clRreL9f73Sz:b9xxrjshhTa1NOslRreL9+

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

paygateme.net:2286

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-BDTHCE

  • 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.

  • 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
  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
    "C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fSdBYwnsRgIV.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2532
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fSdBYwnsRgIV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8CB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2716
    • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
      "C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
        C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe /stext "C:\Users\Admin\AppData\Local\Temp\mabwlbwvjjtzmigkfvrn"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:364
      • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
        C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe /stext "C:\Users\Admin\AppData\Local\Temp\ouopmmhxfrlmpouopgepcxb"
        3⤵
          PID:788
        • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
          C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe /stext "C:\Users\Admin\AppData\Local\Temp\ouopmmhxfrlmpouopgepcxb"
          3⤵
            PID:2684
          • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
            C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe /stext "C:\Users\Admin\AppData\Local\Temp\ouopmmhxfrlmpouopgepcxb"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:1836
          • C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe
            C:\Users\Admin\AppData\Local\Temp\344301a6f73b73afd98c763519d52548b0ee3a76824d033712ddf3ec0115f549.exe /stext "C:\Users\Admin\AppData\Local\Temp\ywthnerrszdrzdqsgqyinkveqkx"
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1676

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Scheduled Task/Job

      1
      T1053

      Persistence

      Scheduled Task/Job

      1
      T1053

      Privilege Escalation

      Scheduled Task/Job

      1
      T1053

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      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

        144B

        MD5

        5c8d81a216fcdfe7904aa36b4c0e99f8

        SHA1

        ee19de734e1ada3d36da57b54cf6f22f292972ea

        SHA256

        f9296ede8552181c0c88bc0274415f186dc8d29cde27887eb817362af7b18ebf

        SHA512

        c895f6c12e111fb3d13c2b6d994115042dcf759a3ee6ffa7574929b0ff13ec0fb1a0b78b0b3c67f17313989f7284c8d46cc9d49c0a4cba4805e52a3c03bed951

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

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • C:\Users\Admin\AppData\Local\Temp\tmpC8CB.tmp
        Filesize

        1KB

        MD5

        c571942b0dd1d1a9082b96133e043417

        SHA1

        5ce6db2a69a376f6f4a5b20707b94ba2d4497d0e

        SHA256

        1624ca929746f0ffc727517c9520fb66dd1f361bced81c8d89c6540985dae0aa

        SHA512

        79d7d182743683abf352d3e51e590060c56ba4f1f301fe324c244e6d764d6fc5d906580e74676ed0b63921b814b6f9b796830a088a46b977e1ef7db5723dc25f

      • memory/364-58-0x0000000000400000-0x0000000000478000-memory.dmp
        Filesize

        480KB

      • memory/364-60-0x0000000000400000-0x0000000000478000-memory.dmp
        Filesize

        480KB

      • memory/364-61-0x0000000000400000-0x0000000000478000-memory.dmp
        Filesize

        480KB

      • memory/364-62-0x0000000000400000-0x0000000000478000-memory.dmp
        Filesize

        480KB

      • memory/364-81-0x0000000000400000-0x0000000000478000-memory.dmp
        Filesize

        480KB

      • memory/1280-35-0x0000000074330000-0x0000000074A1E000-memory.dmp
        Filesize

        6.9MB

      • memory/1280-3-0x00000000003A0000-0x00000000003B4000-memory.dmp
        Filesize

        80KB

      • memory/1280-7-0x0000000074330000-0x0000000074A1E000-memory.dmp
        Filesize

        6.9MB

      • memory/1280-6-0x0000000005A10000-0x0000000005AD6000-memory.dmp
        Filesize

        792KB

      • memory/1280-5-0x00000000005B0000-0x00000000005BE000-memory.dmp
        Filesize

        56KB

      • memory/1280-4-0x00000000005A0000-0x00000000005AA000-memory.dmp
        Filesize

        40KB

      • memory/1280-0-0x0000000001250000-0x0000000001348000-memory.dmp
        Filesize

        992KB

      • memory/1280-8-0x0000000000DD0000-0x0000000000E10000-memory.dmp
        Filesize

        256KB

      • memory/1280-1-0x0000000074330000-0x0000000074A1E000-memory.dmp
        Filesize

        6.9MB

      • memory/1280-2-0x0000000000DD0000-0x0000000000E10000-memory.dmp
        Filesize

        256KB

      • memory/1676-74-0x0000000000400000-0x0000000000424000-memory.dmp
        Filesize

        144KB

      • memory/1676-70-0x0000000000400000-0x0000000000424000-memory.dmp
        Filesize

        144KB

      • memory/1676-73-0x0000000000400000-0x0000000000424000-memory.dmp
        Filesize

        144KB

      • memory/1676-75-0x0000000000400000-0x0000000000424000-memory.dmp
        Filesize

        144KB

      • memory/1676-76-0x0000000000400000-0x0000000000424000-memory.dmp
        Filesize

        144KB

      • memory/1804-50-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-41-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-16-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-123-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-14-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-122-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-114-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-115-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-49-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-48-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-51-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-22-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-53-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-24-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-28-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-43-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-107-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/1804-38-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-106-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-100-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-39-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-42-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-20-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-34-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-32-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-26-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-83-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-85-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-98-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-91-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-90-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-89-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-88-0x0000000010000000-0x0000000010019000-memory.dmp
        Filesize

        100KB

      • memory/1804-93-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-18-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1804-97-0x0000000000400000-0x0000000000482000-memory.dmp
        Filesize

        520KB

      • memory/1836-92-0x0000000000400000-0x0000000000462000-memory.dmp
        Filesize

        392KB

      • memory/1836-71-0x0000000000400000-0x0000000000462000-memory.dmp
        Filesize

        392KB

      • memory/1836-68-0x0000000000400000-0x0000000000462000-memory.dmp
        Filesize

        392KB

      • memory/1836-65-0x0000000000400000-0x0000000000462000-memory.dmp
        Filesize

        392KB

      • memory/2532-47-0x0000000074470000-0x0000000074A1B000-memory.dmp
        Filesize

        5.7MB

      • memory/2532-45-0x0000000074470000-0x0000000074A1B000-memory.dmp
        Filesize

        5.7MB

      • memory/2532-46-0x0000000002550000-0x0000000002590000-memory.dmp
        Filesize

        256KB

      • memory/2532-44-0x0000000074470000-0x0000000074A1B000-memory.dmp
        Filesize

        5.7MB