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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
    02/05/2024, 02:20

General

  • Target

    f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c.exe

  • Size

    3.6MB

  • MD5

    cf7bc3c744eedf62ec6452c1ab170b51

  • SHA1

    d1b669631370863da9ac7b01bc3881ff4b506f18

  • SHA256

    f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c

  • SHA512

    141ec775ef5676144f8b7470cd08795589e1eb67031ed8235a846013014028747b1a8d0ade054a6b2db200b8d6a30d55d4c651943b4b2471eda5a6ee4a91ed61

  • SSDEEP

    49152:lp98Mq2HVhvxG9I1EBn1SdaVY6kqjpr33J7cXdn7jc7QBip7aF2M2/j8e3KEggFm:lR1h2qaVnkM3eeQY2Fgxt++IY404

Malware Config

Extracted

Family

remcos

Botnet

RDEC

C2

64.188.18.137:1604

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-VI2QU3

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 26 IoCs
  • Detects executables built or packed with MPress PE compressor 16 IoCs
  • Detects executables packed with or use KoiVM 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c.exe
    "C:\Users\Admin\AppData\Local\Temp\f3050a3a335d79e31e55dcc7da2da1a672593433058cbb3e325dde599cc11b1c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:2000
      • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
        "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2332
        • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
          "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\lgltwficpbouaaqtihstbbriugsdvaxtzj"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2504
        • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
          "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\wjqmwxt"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2636
        • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
          "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ydeexqdyrs"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2768
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2008 -s 684
        2⤵
          PID:1992

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • memory/2008-1-0x00000000013B0000-0x000000000168A000-memory.dmp

        Filesize

        2.9MB

      • memory/2008-2-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2008-3-0x000000001B210000-0x000000001B4EA000-memory.dmp

        Filesize

        2.9MB

      • memory/2008-4-0x000000001B040000-0x000000001B114000-memory.dmp

        Filesize

        848KB

      • memory/2008-62-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

        Filesize

        9.9MB

      • memory/2008-61-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

        Filesize

        4KB

      • memory/2008-0-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

        Filesize

        4KB

      • memory/2332-59-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2332-8-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2332-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-12-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-10-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-9-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-20-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-21-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-23-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-24-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-28-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-29-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-73-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-72-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-69-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-68-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-67-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-66-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-65-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-64-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-63-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-5-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-60-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-58-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2332-19-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-18-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/2332-55-0x0000000010000000-0x0000000010019000-memory.dmp

        Filesize

        100KB

      • memory/2504-46-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2504-52-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2504-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2504-34-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2504-32-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2504-40-0x0000000000400000-0x0000000000478000-memory.dmp

        Filesize

        480KB

      • memory/2636-41-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2636-54-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2636-47-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2636-38-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2636-39-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2768-42-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2768-44-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2768-45-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB

      • memory/2768-43-0x0000000000400000-0x0000000000424000-memory.dmp

        Filesize

        144KB