Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 02:22

General

  • Target

    3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe

  • Size

    1.0MB

  • MD5

    e5d2981fd9c531b3cfb780cf781bac91

  • SHA1

    aaf7084c369138eb5588051eda8aec9aa3c4ac26

  • SHA256

    3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b

  • SHA512

    ec10e5de423564c17caac9e3c8a4ab2d1ed51882c9cfe145374d69e9f18382d7bd23d370f0389fb56c3b77073da11351978e803dc53c7135e618bbf0507be539

  • SSDEEP

    24576:Aazz87bccsW43UyDBU7RCFYK9i3iOpOnC+yqiQDi/DtS:AOz8732BdUCYK9i3X6CPqinDo

Malware Config

Extracted

Family

remcos

Botnet

P2-bin

C2

84.38.132.126:61445

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-ANE1CN

  • 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) 28 IoCs
  • Detects executables built or packed with MPress PE compressor 18 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
  • 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 9 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
    "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2760
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bZurkfs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2808
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp49BD.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2140
    • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
      "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
      2⤵
        PID:2608
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2620
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\gmlbjpdqyvdugxverpgm"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2660
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ipyujiosmdvzrdriaatfnqg"
          3⤵
            PID:1792
          • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
            C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ipyujiosmdvzrdriaatfnqg"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:1520
          • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
            C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\tjemkagmalnetrfmrknhqvackyn"
            3⤵
              PID:1528
            • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
              C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\tjemkagmalnetrfmrknhqvackyn"
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1428

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\ProgramData\remcos\logs.dat

                Filesize

                144B

                MD5

                69923b7fb0f38d2e69c6963a2b40b46e

                SHA1

                9d4c1f9dc8fede097870f27786f591407f1abfed

                SHA256

                18f71edbf282763cb052335d80ed7ae53d64a1daca5b729b7c6d028af67a950e

                SHA512

                f4c5d0a63d4f515e969c0214c9b0ae363c66c5ae6eb0b21d3d1a030c01c31e6886b83c72cb7e78762d6c0ff7106e67a4f0a54bebff6be7075a85383f30dfa79b

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

                Filesize

                2B

                MD5

                f3b25701fe362ec84616a93a45ce9998

                SHA1

                d62636d8caec13f04e28442a0a6fa1afeb024bbb

                SHA256

                b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                SHA512

                98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

              • C:\Users\Admin\AppData\Local\Temp\tmp49BD.tmp

                Filesize

                1KB

                MD5

                519c1fcf23a254cfc24a53049a98a686

                SHA1

                921b98830a75f5e2b95cced398706d54b2309ce6

                SHA256

                2abafc2da3b92be43c31ad96415f264c742d4cf4f7f0de59a26e0ca8caef8a43

                SHA512

                72515108b58f0b7f4feba91bdc7051050b63bfe8f5d74a3fb3fefee6301e2b94d7c81a71601c4dfbb7d3143a0e64144a80670da0c165c105a84c1b075624fb1c

              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

                Filesize

                7KB

                MD5

                7b59b21530321b0ef9937fc7201f411b

                SHA1

                4988bca0ad825aae54e7fd280d65945a52fd5cff

                SHA256

                9a987c99bf6b90a2e8190e357ffc28b4a5f9412a4244ec77020e087b8bf577d8

                SHA512

                dd264173049ab99d72f70d0de3e43e8e59c202949d2989fa636405bb00735b156d81fb7cc1a0b12d1c31145b6dee169d7634cb298fe93a543950557fabd45c48

              • memory/1428-76-0x0000000000400000-0x0000000000424000-memory.dmp

                Filesize

                144KB

              • memory/1428-79-0x0000000000400000-0x0000000000424000-memory.dmp

                Filesize

                144KB

              • memory/1428-83-0x0000000000400000-0x0000000000424000-memory.dmp

                Filesize

                144KB

              • memory/1428-84-0x0000000000400000-0x0000000000424000-memory.dmp

                Filesize

                144KB

              • memory/1520-99-0x0000000000400000-0x0000000000457000-memory.dmp

                Filesize

                348KB

              • memory/1520-72-0x0000000000400000-0x0000000000457000-memory.dmp

                Filesize

                348KB

              • memory/1520-81-0x0000000000400000-0x0000000000457000-memory.dmp

                Filesize

                348KB

              • memory/1520-77-0x0000000000400000-0x0000000000457000-memory.dmp

                Filesize

                348KB

              • memory/2512-6-0x0000000007580000-0x0000000007646000-memory.dmp

                Filesize

                792KB

              • memory/2512-5-0x00000000007B0000-0x00000000007BE000-memory.dmp

                Filesize

                56KB

              • memory/2512-4-0x00000000007A0000-0x00000000007AA000-memory.dmp

                Filesize

                40KB

              • memory/2512-3-0x0000000000770000-0x0000000000784000-memory.dmp

                Filesize

                80KB

              • memory/2512-2-0x0000000000370000-0x00000000003B0000-memory.dmp

                Filesize

                256KB

              • memory/2512-0-0x0000000001390000-0x000000000149A000-memory.dmp

                Filesize

                1.0MB

              • memory/2512-1-0x0000000074BF0000-0x00000000752DE000-memory.dmp

                Filesize

                6.9MB

              • memory/2512-38-0x0000000074BF0000-0x00000000752DE000-memory.dmp

                Filesize

                6.9MB

              • memory/2620-20-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-58-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-128-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-121-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-120-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-43-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-113-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-112-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-47-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-108-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2620-49-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-50-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-19-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-104-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-53-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-54-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-55-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-56-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-57-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-97-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2620-60-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-61-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-62-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-103-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-100-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-39-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-21-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-35-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                Filesize

                4KB

              • memory/2620-31-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-27-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-29-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-25-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-98-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2620-23-0x0000000000400000-0x0000000000482000-memory.dmp

                Filesize

                520KB

              • memory/2620-92-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2620-96-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2620-95-0x0000000010000000-0x0000000010019000-memory.dmp

                Filesize

                100KB

              • memory/2660-71-0x0000000000400000-0x0000000000478000-memory.dmp

                Filesize

                480KB

              • memory/2660-89-0x0000000000400000-0x0000000000478000-memory.dmp

                Filesize

                480KB

              • memory/2660-68-0x0000000000400000-0x0000000000478000-memory.dmp

                Filesize

                480KB

              • memory/2660-65-0x0000000000400000-0x0000000000478000-memory.dmp

                Filesize

                480KB

              • memory/2760-51-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB

              • memory/2760-44-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB

              • memory/2760-41-0x0000000002860000-0x00000000028A0000-memory.dmp

                Filesize

                256KB

              • memory/2760-40-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB

              • memory/2808-37-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB

              • memory/2808-52-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB

              • memory/2808-48-0x0000000002BF0000-0x0000000002C30000-memory.dmp

                Filesize

                256KB

              • memory/2808-46-0x0000000002BF0000-0x0000000002C30000-memory.dmp

                Filesize

                256KB

              • memory/2808-42-0x000000006F7E0000-0x000000006FD8B000-memory.dmp

                Filesize

                5.7MB