Analysis

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

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    16-04-2024 01:35

General

  • Target

    f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe

  • Size

    967KB

  • MD5

    6d53853d0d56802e6ad845407f61eee7

  • SHA1

    3cfb6e47d65afb417444d23908e28163ab83a341

  • SHA256

    f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2

  • SHA512

    20279d70d086aec743a7c6df92384fe5100e4a9e9f7cb710ac3c947b2a36a0a3b307638a0f3dfcd93cf26ba2172db1d546ffa311939ebc28c5b3988d0b6b00e5

  • SSDEEP

    24576:Zo5Cx4T0Nq036gAfCwpOypJ4k4ZS3yWw:C5Cx4QN/OCypJ4ZZSCWw

Malware Config

Extracted

Family

remcos

Botnet

BUDDY

C2

192.210.201.57:52499

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-LMLI87

  • 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) 27 IoCs
  • Detects executables built or packed with MPress PE compressor 18 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 2 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
  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
    "C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
      "C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1296
      • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
        C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhggwcxxitwiondocnkgsd"
        3⤵
          PID:1736
        • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
          C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhggwcxxitwiondocnkgsd"
          3⤵
            PID:2608
          • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
            C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhggwcxxitwiondocnkgsd"
            3⤵
              PID:656
            • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
              C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhggwcxxitwiondocnkgsd"
              3⤵
                PID:2376
              • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
                C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\nhggwcxxitwiondocnkgsd"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:2372
              • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
                C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\ybtzxuizwbonybrstyfhcqrxb"
                3⤵
                • Accesses Microsoft Outlook accounts
                PID:2420
              • C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe
                C:\Users\Admin\AppData\Local\Temp\f5d0cc0b20705f516fd4b613c5e10473dd6a49aff8f9a03db004e6e8b80f46d2.exe /stext "C:\Users\Admin\AppData\Local\Temp\idyrxnttkjgsahnecjsjfvmgcnhst"
                3⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:2784

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Credential Access

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          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

            ca8713e26809b00152bdd4b2d166aa06

            SHA1

            e3b0270b008922e724046f9ed8b7f4f4cf52c9ef

            SHA256

            923e221e2279a3c63ceb33a16add43bdd0e4fdca2aa63d884caeea000f7eb1ef

            SHA512

            2cd81e7ab2e287b670d79819f0b6d561e403a00519c0f20ee89df95daae29a796252e5943cc33de1b2132b28a7b2134f9ace504c3720618929971153e10e8eb5

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

            2B

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • memory/1296-40-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-77-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-15-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-109-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-108-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-17-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-101-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-21-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
            Filesize

            4KB

          • memory/1296-25-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-27-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-28-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-100-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-93-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-92-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-86-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-9-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-84-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-29-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-83-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-33-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-34-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-35-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-36-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-37-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-38-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-7-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-80-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-73-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-19-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-32-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-13-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/1296-74-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-76-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-75-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-70-0x0000000010000000-0x0000000010019000-memory.dmp
            Filesize

            100KB

          • memory/1296-11-0x0000000000400000-0x0000000000482000-memory.dmp
            Filesize

            520KB

          • memory/2032-6-0x0000000005C10000-0x0000000005CD0000-memory.dmp
            Filesize

            768KB

          • memory/2032-30-0x00000000745C0000-0x0000000074CAE000-memory.dmp
            Filesize

            6.9MB

          • memory/2032-3-0x0000000000630000-0x000000000064C000-memory.dmp
            Filesize

            112KB

          • memory/2032-2-0x0000000004C60000-0x0000000004CA0000-memory.dmp
            Filesize

            256KB

          • memory/2032-4-0x0000000000690000-0x0000000000698000-memory.dmp
            Filesize

            32KB

          • memory/2032-5-0x00000000006A0000-0x00000000006AC000-memory.dmp
            Filesize

            48KB

          • memory/2032-0-0x0000000000090000-0x0000000000188000-memory.dmp
            Filesize

            992KB

          • memory/2032-1-0x00000000745C0000-0x0000000074CAE000-memory.dmp
            Filesize

            6.9MB

          • memory/2372-46-0x0000000000400000-0x0000000000478000-memory.dmp
            Filesize

            480KB

          • memory/2372-67-0x0000000000400000-0x0000000000478000-memory.dmp
            Filesize

            480KB

          • memory/2372-49-0x0000000000400000-0x0000000000478000-memory.dmp
            Filesize

            480KB

          • memory/2372-43-0x0000000000400000-0x0000000000478000-memory.dmp
            Filesize

            480KB

          • memory/2420-58-0x0000000000400000-0x0000000000462000-memory.dmp
            Filesize

            392KB

          • memory/2420-78-0x0000000000400000-0x0000000000462000-memory.dmp
            Filesize

            392KB

          • memory/2420-54-0x0000000000400000-0x0000000000462000-memory.dmp
            Filesize

            392KB

          • memory/2420-50-0x0000000000400000-0x0000000000462000-memory.dmp
            Filesize

            392KB

          • memory/2784-55-0x0000000000400000-0x0000000000424000-memory.dmp
            Filesize

            144KB

          • memory/2784-61-0x0000000000400000-0x0000000000424000-memory.dmp
            Filesize

            144KB

          • memory/2784-59-0x0000000000400000-0x0000000000424000-memory.dmp
            Filesize

            144KB

          • memory/2784-62-0x0000000000400000-0x0000000000424000-memory.dmp
            Filesize

            144KB