Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 02:26

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) 33 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 7 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 11 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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:2240
    • 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:2180
    • 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:2656
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp47CA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2668
    • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
      "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
      2⤵
        PID:2464
      • 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:2496
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
          3⤵
            PID:1868
          • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
            C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
            3⤵
              PID:1864
            • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
              C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
              3⤵
                PID:1132
              • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
                3⤵
                  PID:1160
                • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                  C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
                  3⤵
                    PID:2092
                  • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                    C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uonsfkxblizczfwptro"
                    3⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1764
                  • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                    C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\fitkfdiuzqrhbtttdcjyiwb"
                    3⤵
                    • Accesses Microsoft Outlook accounts
                    PID:2560
                  • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                    C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\pkyvgvbwvyjmmzhxumvatjnxxv"
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1648
                • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                  "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
                  2⤵
                    PID:2476

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\ProgramData\remcos\logs.dat

                        Filesize

                        144B

                        MD5

                        b877dff7423b560ebe11ec005f17067f

                        SHA1

                        a79ec23ea843d94573f1056d5011c906fc7f6f39

                        SHA256

                        bd27c5d9ae0bfcefc51dacc7b0712f1de411f5ef2cf011aab45f582dc79af4d6

                        SHA512

                        afcbea5d2fa486354122a56196c52e2aadfae8646aed66643d0e0d7f3048b3db589ab8b2ef593ab135656e41fa752c76bad69334dac8a5fa22ae544630e2b61a

                      • C:\Users\Admin\AppData\Local\Temp\tmp47CA.tmp

                        Filesize

                        1KB

                        MD5

                        8b7293738d19fa19094355c3a393e57d

                        SHA1

                        7d2fdba1e83a774fe5b88cfc879e571addeaa14e

                        SHA256

                        a79bae861944da9f2d4cfd0560d9021b6b77919dc42b4cc7eff3c046e1fa46c3

                        SHA512

                        5c83bb1b13907abbd128c0df33b6b89a728eb51116f73dc1348fe44d5957ba04f2d6c8050ef151248abbf650a77c5437f831324ed0596b49f7b6baf867d9d5fa

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

                        Filesize

                        2B

                        MD5

                        f3b25701fe362ec84616a93a45ce9998

                        SHA1

                        d62636d8caec13f04e28442a0a6fa1afeb024bbb

                        SHA256

                        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                        SHA512

                        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\UBWENRJFHOYR0N90WTB4.temp

                        Filesize

                        7KB

                        MD5

                        b019ac366ee89f33f203e6af94e9d477

                        SHA1

                        d297eace390ab51073b4bb959fb33fe33a6ce747

                        SHA256

                        fbcd3f71db474935df97700e441ab403b7436ea3c302b8430aaa111054aa0983

                        SHA512

                        4d90b034ef74043a99816a6d4c73bf2fe7915bfe0854d0e8353f6386bd5730820d936a91820fdc816c72eb9e9fbbbaf2e8fbc3038e55b6b6b751975c00557c20

                      • memory/1648-84-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/1648-81-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/1648-76-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/1648-80-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/1648-82-0x0000000000400000-0x0000000000424000-memory.dmp

                        Filesize

                        144KB

                      • memory/1764-68-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1764-71-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1764-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/1764-64-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/1764-89-0x0000000000400000-0x0000000000478000-memory.dmp

                        Filesize

                        480KB

                      • memory/2180-48-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/2180-30-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/2180-26-0x00000000028C0000-0x0000000002900000-memory.dmp

                        Filesize

                        256KB

                      • memory/2180-28-0x00000000028C0000-0x0000000002900000-memory.dmp

                        Filesize

                        256KB

                      • memory/2180-19-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/2180-20-0x00000000028C0000-0x0000000002900000-memory.dmp

                        Filesize

                        256KB

                      • memory/2240-6-0x00000000075B0000-0x0000000007676000-memory.dmp

                        Filesize

                        792KB

                      • memory/2240-34-0x0000000074150000-0x000000007483E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2240-1-0x0000000074150000-0x000000007483E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2240-5-0x00000000005D0000-0x00000000005DE000-memory.dmp

                        Filesize

                        56KB

                      • memory/2240-0-0x0000000000270000-0x000000000037A000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/2240-4-0x00000000005C0000-0x00000000005CA000-memory.dmp

                        Filesize

                        40KB

                      • memory/2240-3-0x0000000000510000-0x0000000000524000-memory.dmp

                        Filesize

                        80KB

                      • memory/2240-2-0x0000000007450000-0x0000000007490000-memory.dmp

                        Filesize

                        256KB

                      • memory/2240-41-0x0000000074150000-0x000000007483E000-memory.dmp

                        Filesize

                        6.9MB

                      • memory/2496-35-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-93-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2496-43-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-46-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-47-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-45-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-131-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-40-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-50-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-51-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-52-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-54-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-53-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-55-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-57-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-58-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-59-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-60-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-61-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-130-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-123-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-38-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-33-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-122-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-115-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-114-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                        Filesize

                        4KB

                      • memory/2496-31-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-29-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-27-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-25-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-23-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-107-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-106-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-98-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2496-97-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2496-96-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2496-42-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-99-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-101-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-21-0x0000000000400000-0x0000000000482000-memory.dmp

                        Filesize

                        520KB

                      • memory/2496-105-0x0000000010000000-0x0000000010019000-memory.dmp

                        Filesize

                        100KB

                      • memory/2560-91-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/2560-78-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/2560-75-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/2560-70-0x0000000000400000-0x0000000000457000-memory.dmp

                        Filesize

                        348KB

                      • memory/2656-22-0x0000000002950000-0x0000000002990000-memory.dmp

                        Filesize

                        256KB

                      • memory/2656-32-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/2656-24-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/2656-49-0x000000006EDD0000-0x000000006F37B000-memory.dmp

                        Filesize

                        5.7MB