Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-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) 25 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 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 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 13 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
    "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2524
    • 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:4748
    • 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:3188
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7D8C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2808
    • 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:5020
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\uwspdzixsloblboqfowiysefajfbybqxb"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2504
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\hscaekesu"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4884
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\eyxhes"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1360
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\eyxhes"
        3⤵
          PID:3876

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            aea106b48f354d67636c9bbad32f57e0

            SHA1

            99ef0aef230d45632a09fc0817aaf01ba57d8f07

            SHA256

            c54964a19276a5e43a5d9060891d223999349e0b723606af191715d5856243e5

            SHA512

            4e9ef1f59d3af81590c88f47b12744fc6cddb3bafb1c02c9b1d6271c46407ad8950bbc38a1a454f9ea0e2c46f7f6475f8d32223ceb98aeedd8a06ca697ff56a6

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yw3g3rly.gaa.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\tmp7D8C.tmp

            Filesize

            1KB

            MD5

            47fb1c5ecd59eba27ec7eef3263efe33

            SHA1

            ee454ef0807cab2f5e944fe4bceb6d326de42299

            SHA256

            2f1cdc8fa3865f426bc35355069e5985628ebe93d3d6057d92e888d721b41f96

            SHA512

            c8f67f08528631d4fb486178c71e4007d6278911bbc2b1bf3d08892256d483c63155ca5c6c3a595fcb70df86ec8879f32e739d08ed06f2d7ad89cd38f52787c8

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

            Filesize

            4KB

            MD5

            9d1c4331e92ea47959e79f26ca09d973

            SHA1

            f8baa65953243feba3299fbaa7af110fbc7011b2

            SHA256

            ffddf68859952ecc2a486189ef0b15519f898d4d1ba04f6555264714b2d9108f

            SHA512

            76cc4cfa6a89d69035c0539294a5903f5b9b01314aaa2ffef7ccc6a5cdc163bf2336fa98e6f5406510b74c8da8bf5cbac5c55718df58f3b082b7fe8f8dda3daf

          • memory/1360-114-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1360-120-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1360-128-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1360-126-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1360-122-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/2504-116-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2504-133-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2504-121-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2504-111-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2524-4-0x0000000005830000-0x0000000005840000-memory.dmp

            Filesize

            64KB

          • memory/2524-10-0x000000000ABF0000-0x000000000ACB6000-memory.dmp

            Filesize

            792KB

          • memory/2524-8-0x000000000AAF0000-0x000000000AAFA000-memory.dmp

            Filesize

            40KB

          • memory/2524-2-0x0000000008290000-0x0000000008834000-memory.dmp

            Filesize

            5.6MB

          • memory/2524-50-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/2524-7-0x0000000008280000-0x0000000008294000-memory.dmp

            Filesize

            80KB

          • memory/2524-1-0x0000000000D20000-0x0000000000E2A000-memory.dmp

            Filesize

            1.0MB

          • memory/2524-0-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/2524-25-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/2524-3-0x0000000007D80000-0x0000000007E12000-memory.dmp

            Filesize

            584KB

          • memory/2524-6-0x000000000A7B0000-0x000000000A84C000-memory.dmp

            Filesize

            624KB

          • memory/2524-9-0x000000000AB00000-0x000000000AB0E000-memory.dmp

            Filesize

            56KB

          • memory/2524-5-0x0000000007D00000-0x0000000007D0A000-memory.dmp

            Filesize

            40KB

          • memory/3188-57-0x0000000005BE0000-0x0000000005C2C000-memory.dmp

            Filesize

            304KB

          • memory/3188-108-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/3188-59-0x0000000006B00000-0x0000000006B32000-memory.dmp

            Filesize

            200KB

          • memory/3188-26-0x00000000054F0000-0x0000000005556000-memory.dmp

            Filesize

            408KB

          • memory/3188-24-0x0000000005390000-0x00000000053F6000-memory.dmp

            Filesize

            408KB

          • memory/3188-54-0x0000000005B30000-0x0000000005B4E000-memory.dmp

            Filesize

            120KB

          • memory/3188-21-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/3188-18-0x0000000002250000-0x0000000002260000-memory.dmp

            Filesize

            64KB

          • memory/3188-104-0x00000000071A0000-0x00000000071BA000-memory.dmp

            Filesize

            104KB

          • memory/3188-17-0x0000000002250000-0x0000000002260000-memory.dmp

            Filesize

            64KB

          • memory/3188-60-0x000000007F560000-0x000000007F570000-memory.dmp

            Filesize

            64KB

          • memory/3188-63-0x0000000071370000-0x00000000713BC000-memory.dmp

            Filesize

            304KB

          • memory/3188-96-0x0000000007060000-0x0000000007071000-memory.dmp

            Filesize

            68KB

          • memory/3188-95-0x00000000070E0000-0x0000000007176000-memory.dmp

            Filesize

            600KB

          • memory/3188-92-0x00000000074A0000-0x0000000007B1A000-memory.dmp

            Filesize

            6.5MB

          • memory/4748-73-0x00000000046D0000-0x00000000046E0000-memory.dmp

            Filesize

            64KB

          • memory/4748-20-0x00000000046D0000-0x00000000046E0000-memory.dmp

            Filesize

            64KB

          • memory/4748-74-0x0000000006BB0000-0x0000000006BCE000-memory.dmp

            Filesize

            120KB

          • memory/4748-15-0x0000000004620000-0x0000000004656000-memory.dmp

            Filesize

            216KB

          • memory/4748-62-0x000000007F550000-0x000000007F560000-memory.dmp

            Filesize

            64KB

          • memory/4748-86-0x0000000006BE0000-0x0000000006C83000-memory.dmp

            Filesize

            652KB

          • memory/4748-16-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/4748-19-0x0000000004D10000-0x0000000005338000-memory.dmp

            Filesize

            6.2MB

          • memory/4748-85-0x00000000046D0000-0x00000000046E0000-memory.dmp

            Filesize

            64KB

          • memory/4748-93-0x0000000006F20000-0x0000000006F3A000-memory.dmp

            Filesize

            104KB

          • memory/4748-94-0x0000000006F90000-0x0000000006F9A000-memory.dmp

            Filesize

            40KB

          • memory/4748-109-0x0000000074BB0000-0x0000000075360000-memory.dmp

            Filesize

            7.7MB

          • memory/4748-61-0x0000000071370000-0x00000000713BC000-memory.dmp

            Filesize

            304KB

          • memory/4748-23-0x0000000004B50000-0x0000000004B72000-memory.dmp

            Filesize

            136KB

          • memory/4748-43-0x0000000005620000-0x0000000005974000-memory.dmp

            Filesize

            3.3MB

          • memory/4748-101-0x0000000007150000-0x000000000715E000-memory.dmp

            Filesize

            56KB

          • memory/4748-102-0x0000000007160000-0x0000000007174000-memory.dmp

            Filesize

            80KB

          • memory/4748-103-0x0000000007260000-0x000000000727A000-memory.dmp

            Filesize

            104KB

          • memory/4748-105-0x0000000007240000-0x0000000007248000-memory.dmp

            Filesize

            32KB

          • memory/4884-127-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4884-117-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4884-130-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4884-131-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/5020-98-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-142-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/5020-51-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-49-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-55-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-56-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-58-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-41-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-42-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-100-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-89-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-75-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-91-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-139-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/5020-140-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/5020-52-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-141-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-138-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/5020-135-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/5020-87-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-144-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-146-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-147-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-90-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-154-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-155-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-162-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-163-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-170-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5020-171-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB