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, 02:42

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) 27 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 7 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 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:2548
    • 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:2824
    • 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:2672
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp407A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2892
    • 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:2512
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\mwxejytkeimflbas"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1068
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\wzcwkiddsrekohowqmg"
        3⤵
          PID:1440
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\wzcwkiddsrekohowqmg"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:644
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\wzcwkiddsrekohowqmg"
          3⤵
            PID:1472
          • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
            C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ytphkbofgzwxynkazxtlel"
            3⤵
              PID:1620
            • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
              C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ytphkbofgzwxynkazxtlel"
              3⤵
                PID:2040
              • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ytphkbofgzwxynkazxtlel"
                3⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:2960
              • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
                C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ytphkbofgzwxynkazxtlel"
                3⤵
                  PID:1232

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\ProgramData\remcos\logs.dat

                    Filesize

                    144B

                    MD5

                    01858ef3d89414fe18ee21beabc2e5eb

                    SHA1

                    cb7513d082cbbb4bfba82007d60f662223f17a32

                    SHA256

                    a41db451968a627681c1153696b72e8eb9116b0b6f207ee5434b1d638c74f265

                    SHA512

                    8453dd6b4be559b203d8d9e8c3030ef457589a76eeef08a59b466e4f9eaab19fbf3a877789f3d42b4efb155a64d97ccef5a99d398895eb23871a28f4f05c999d

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

                    Filesize

                    2B

                    MD5

                    f3b25701fe362ec84616a93a45ce9998

                    SHA1

                    d62636d8caec13f04e28442a0a6fa1afeb024bbb

                    SHA256

                    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                    SHA512

                    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                  • C:\Users\Admin\AppData\Local\Temp\tmp407A.tmp

                    Filesize

                    1KB

                    MD5

                    a74c62fd136aca222a10d7ceb0778550

                    SHA1

                    8cc9227127366cf2133ed32f1e4547ca7f99b36b

                    SHA256

                    d956d502f4de4501d919a3bb0df2369425389d4bf39b3fb36db001936144d6dc

                    SHA512

                    18e8c0ff6ae2ea1865f4ba9344e2ef5a3bc00fdac20c70fa06e0033b3506a4b095205f4595ccc80d4b3df5fef5c5ca5c327df0ad6640e82e7dbe5287228c4e8a

                  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4W44A8D75E2213A4MZT4.temp

                    Filesize

                    7KB

                    MD5

                    8d65f902bdfa36bd969d763af66d8840

                    SHA1

                    a3ab43f6ec982272220695700d25297d76316adb

                    SHA256

                    7892eae1d19e2fb4641ae6e0bae6b5e28010fee6db0888bc808c970aebda8b24

                    SHA512

                    81b503a502d2a67a5f04354009b0a956f4dce3da4729df1a3a962e9e078e96f1ee4c49f86d205a8991dcbf471112c87c6a77cdf8c1a1d3f485b37c7ab50fa028

                  • memory/644-95-0x0000000000400000-0x0000000000457000-memory.dmp

                    Filesize

                    348KB

                  • memory/644-80-0x0000000000400000-0x0000000000457000-memory.dmp

                    Filesize

                    348KB

                  • memory/644-77-0x0000000000400000-0x0000000000457000-memory.dmp

                    Filesize

                    348KB

                  • memory/644-75-0x0000000000400000-0x0000000000457000-memory.dmp

                    Filesize

                    348KB

                  • memory/1068-92-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/1068-67-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/1068-74-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/1068-71-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/2512-48-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-102-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-27-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-111-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2512-30-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-23-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-107-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-106-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-34-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-105-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-37-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-39-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2512-41-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-45-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-47-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-96-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2512-116-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-51-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-52-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-53-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-115-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-100-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2512-57-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-56-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-58-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-59-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-60-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-61-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-63-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-64-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-123-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-72-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-19-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2512-99-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2512-101-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2548-4-0x00000000005F0000-0x00000000005FA000-memory.dmp

                    Filesize

                    40KB

                  • memory/2548-3-0x0000000000460000-0x0000000000474000-memory.dmp

                    Filesize

                    80KB

                  • memory/2548-5-0x0000000000600000-0x000000000060E000-memory.dmp

                    Filesize

                    56KB

                  • memory/2548-6-0x0000000007450000-0x0000000007516000-memory.dmp

                    Filesize

                    792KB

                  • memory/2548-1-0x00000000747B0000-0x0000000074E9E000-memory.dmp

                    Filesize

                    6.9MB

                  • memory/2548-49-0x00000000747B0000-0x0000000074E9E000-memory.dmp

                    Filesize

                    6.9MB

                  • memory/2548-2-0x0000000004BA0000-0x0000000004BE0000-memory.dmp

                    Filesize

                    256KB

                  • memory/2548-0-0x00000000000E0000-0x00000000001EA000-memory.dmp

                    Filesize

                    1.0MB

                  • memory/2672-55-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2672-35-0x0000000002AE0000-0x0000000002B20000-memory.dmp

                    Filesize

                    256KB

                  • memory/2672-22-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2672-24-0x0000000002AE0000-0x0000000002B20000-memory.dmp

                    Filesize

                    256KB

                  • memory/2672-28-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2672-31-0x0000000002AE0000-0x0000000002B20000-memory.dmp

                    Filesize

                    256KB

                  • memory/2824-26-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2824-54-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2824-33-0x0000000002A00000-0x0000000002A40000-memory.dmp

                    Filesize

                    256KB

                  • memory/2824-20-0x000000006F300000-0x000000006F8AB000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/2960-87-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2960-82-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2960-84-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2960-85-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2960-86-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB