Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-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) 28 IoCs
  • Detects executables built or packed with MPress PE compressor 17 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
  • 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 15 IoCs
  • Suspicious behavior: MapViewOfSection 3 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:4908
    • 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:2656
    • 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:4716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8889.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2156
    • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
      "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
      2⤵
        PID:3356
      • 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:2484
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\zcpzopyqfrbwyysmufyhunkqjvtae"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2088
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\keukphirtztbbegydpsixaehskdjfzty"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3996
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\myic"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5112

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            8e6aad6e4b3e8f07eddc4a854e7a1b80

            SHA1

            f6f34068cf7af3b46beb148601d1585f4b61a72a

            SHA256

            f95cd0791f2224c31024fcc7a6c3a7ca3adbef39a2b5fd2cdbd8b55bf34d9fb9

            SHA512

            d917cf0df83cf7bb04061f201df509b6e622636b707c47809a8fd2f87f2d98b838c811a475fe44379eef091008945ef30a971437e0f94c4e68296a707c63c7b7

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

            Filesize

            2KB

            MD5

            968cb9309758126772781b83adb8a28f

            SHA1

            8da30e71accf186b2ba11da1797cf67f8f78b47c

            SHA256

            92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

            SHA512

            4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            18KB

            MD5

            247cbc441138ce9fc96007012ae4399a

            SHA1

            fd833b95a1b9191d84c856412bbc97800e35d163

            SHA256

            bbc86bb005f599975a72a89b0789eed78c710f213941b048ff2177726a6c71e6

            SHA512

            adb9a6fa9111fa06d3eb260159eebd3b4bc40945dac5810efc63636a88deef773d2ae0686f5b336a8d97b69e4a6419ecbbe33942215db283d4173672cf0da20c

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gerwgct4.k00.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\tmp8889.tmp

            Filesize

            1KB

            MD5

            64126d5147d5d30cd5c60c324a94606c

            SHA1

            376aab5990b79526c7a218dcc8eb9594c6d3bb86

            SHA256

            112cac119307c519fa55120d14fbaf8e5ea13fa6e87c76fa5b5f58115974bfa2

            SHA512

            7ac74044df24918156ea4a6e5188a682caf0667a21353cf25e2281a8357d2d4ace49b46e5bb1cdc478aa2509f661edfdfa1cc1aaf14fe78e818be83b58296f3c

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

            Filesize

            4KB

            MD5

            5c45226c7bdcd87ae920b1717198c4a4

            SHA1

            1ddd033bc2e4398dfd19ba5cb321e05b293e7ab6

            SHA256

            a3a582b7b4e21cb54fa5c7a2f0e39d10a4c12de1c376d86e909d9c7b3047287f

            SHA512

            67596b4b7bdd3cfad64fa205cb9b74a6d4f5f4b3efd3eb47a68d831e8a342d7ffb784d8a19a4f845ed86c6f3683ea9286cf5eed59b8e5d8c2f487d1a5f8abb2c

          • memory/2088-104-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2088-108-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2088-111-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2088-128-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2484-154-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2484-181-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-148-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-147-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-146-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-145-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2484-144-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2484-81-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-157-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-158-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-165-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-142-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2484-166-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-47-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-134-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2484-173-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-174-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-150-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-182-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-51-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-103-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-54-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-48-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-57-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-58-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-59-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-60-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-61-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-99-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-65-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-79-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-98-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2484-80-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2656-97-0x0000000007B40000-0x0000000007B4A000-memory.dmp

            Filesize

            40KB

          • memory/2656-20-0x00000000053E0000-0x00000000053F0000-memory.dmp

            Filesize

            64KB

          • memory/2656-15-0x00000000051F0000-0x0000000005226000-memory.dmp

            Filesize

            216KB

          • memory/2656-84-0x0000000008110000-0x000000000878A000-memory.dmp

            Filesize

            6.5MB

          • memory/2656-16-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/2656-17-0x0000000005A20000-0x0000000006048000-memory.dmp

            Filesize

            6.2MB

          • memory/2656-77-0x00000000079B0000-0x0000000007A53000-memory.dmp

            Filesize

            652KB

          • memory/2656-94-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

            Filesize

            104KB

          • memory/2656-78-0x00000000053E0000-0x00000000053F0000-memory.dmp

            Filesize

            64KB

          • memory/2656-21-0x00000000053E0000-0x00000000053F0000-memory.dmp

            Filesize

            64KB

          • memory/2656-76-0x0000000007990000-0x00000000079AE000-memory.dmp

            Filesize

            120KB

          • memory/2656-75-0x00000000053E0000-0x00000000053F0000-memory.dmp

            Filesize

            64KB

          • memory/2656-64-0x000000007F2D0000-0x000000007F2E0000-memory.dmp

            Filesize

            64KB

          • memory/2656-63-0x000000006F780000-0x000000006F7CC000-memory.dmp

            Filesize

            304KB

          • memory/2656-62-0x0000000007950000-0x0000000007982000-memory.dmp

            Filesize

            200KB

          • memory/2656-100-0x0000000007D50000-0x0000000007DE6000-memory.dmp

            Filesize

            600KB

          • memory/2656-55-0x0000000006D20000-0x0000000006D6C000-memory.dmp

            Filesize

            304KB

          • memory/2656-101-0x0000000007CD0000-0x0000000007CE1000-memory.dmp

            Filesize

            68KB

          • memory/2656-22-0x0000000005810000-0x0000000005832000-memory.dmp

            Filesize

            136KB

          • memory/2656-136-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/2656-50-0x0000000006780000-0x000000000679E000-memory.dmp

            Filesize

            120KB

          • memory/2656-43-0x00000000061C0000-0x0000000006514000-memory.dmp

            Filesize

            3.3MB

          • memory/2656-26-0x00000000059B0000-0x0000000005A16000-memory.dmp

            Filesize

            408KB

          • memory/2656-126-0x0000000007D10000-0x0000000007D24000-memory.dmp

            Filesize

            80KB

          • memory/2656-125-0x0000000007D00000-0x0000000007D0E000-memory.dmp

            Filesize

            56KB

          • memory/2656-122-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/3996-118-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/3996-121-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/3996-106-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/3996-116-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/4716-83-0x000000007FD50000-0x000000007FD60000-memory.dmp

            Filesize

            64KB

          • memory/4716-19-0x00000000027C0000-0x00000000027D0000-memory.dmp

            Filesize

            64KB

          • memory/4716-123-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4716-27-0x0000000005A30000-0x0000000005A96000-memory.dmp

            Filesize

            408KB

          • memory/4716-129-0x0000000007700000-0x000000000771A000-memory.dmp

            Filesize

            104KB

          • memory/4716-130-0x00000000076E0000-0x00000000076E8000-memory.dmp

            Filesize

            32KB

          • memory/4716-82-0x000000006F780000-0x000000006F7CC000-memory.dmp

            Filesize

            304KB

          • memory/4716-95-0x00000000027C0000-0x00000000027D0000-memory.dmp

            Filesize

            64KB

          • memory/4716-96-0x00000000027C0000-0x00000000027D0000-memory.dmp

            Filesize

            64KB

          • memory/4716-141-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4716-25-0x00000000027C0000-0x00000000027D0000-memory.dmp

            Filesize

            64KB

          • memory/4716-18-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4908-52-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4908-5-0x0000000008220000-0x0000000008230000-memory.dmp

            Filesize

            64KB

          • memory/4908-0-0x0000000000FF0000-0x00000000010FA000-memory.dmp

            Filesize

            1.0MB

          • memory/4908-24-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4908-1-0x0000000074DA0000-0x0000000075550000-memory.dmp

            Filesize

            7.7MB

          • memory/4908-2-0x0000000008480000-0x0000000008A24000-memory.dmp

            Filesize

            5.6MB

          • memory/4908-3-0x0000000007FB0000-0x0000000008042000-memory.dmp

            Filesize

            584KB

          • memory/4908-10-0x000000000AEC0000-0x000000000AF86000-memory.dmp

            Filesize

            792KB

          • memory/4908-9-0x000000000ADD0000-0x000000000ADDE000-memory.dmp

            Filesize

            56KB

          • memory/4908-8-0x000000000ADC0000-0x000000000ADCA000-memory.dmp

            Filesize

            40KB

          • memory/4908-7-0x0000000008280000-0x0000000008294000-memory.dmp

            Filesize

            80KB

          • memory/4908-6-0x000000000AA80000-0x000000000AB1C000-memory.dmp

            Filesize

            624KB

          • memory/4908-4-0x0000000008150000-0x000000000815A000-memory.dmp

            Filesize

            40KB

          • memory/5112-120-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/5112-109-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/5112-119-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/5112-124-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB