Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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, 02:26

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) 26 IoCs
  • Detects executables built or packed with MPress PE compressor 16 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 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:3412
    • 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:452
    • 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:4004
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8405.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4656
    • 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:4716
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\zmvdjxpmjqffcjwezowrglrfu"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1320
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\koiwkqaoxyxkepsiqyjlrymodlla"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:5032
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjnplikhlgpxpdguajwmudyflzdjrww"
        3⤵
          PID:3880
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjnplikhlgpxpdguajwmudyflzdjrww"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1536

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            48e7aeabe7b011655eee398cb40ef676

            SHA1

            91abb0b29be437d72b2ca21f98047cb2b50b453e

            SHA256

            06011eb7563f579ef1d5b370f4f67c69484b5979a34e4ecb94bde9e625bb49ab

            SHA512

            3e0f963f59b53ccccae312d356d5785458f95dc7a8aa86691710d14ee5bd01f90443bde4048c2e6ab13709938e5db15d62cc90377c2bced514f5ec240bd50ed2

          • 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

            600ba4d7fb617532dc740a3d8c39745e

            SHA1

            8c1a1937024652426a6f92709bcf55fac888b2dd

            SHA256

            5163af4ee07587e914db171c4da79b60d7aabf6f460ee9936722728e5668b1fc

            SHA512

            6a4b496a0a06d5664de7090702cc5d512c9d46c3d8bccfa91c012324f0a03120c7a48982c9fc4ea53767a505aceb03dc3bb40a4f638bdf3760525ea423018143

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ohla4b30.0nz.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\tmp8405.tmp

            Filesize

            1KB

            MD5

            7c80bcb6895d24aaa625a39ce99b769e

            SHA1

            41a615ae2b4f7c2d33c4f177e1b2ae79b5fed5fd

            SHA256

            657c33187ff4076b7bde2a6ceffd3c4828705b46911c0b4157a271b173ea4b99

            SHA512

            11e76a84a9a617227e1d4436c975c39e0de438dee42cc3bc78445cff4a7b2356e21eb1d5e816e0a5bea61ad75a694cb2dac285ad93fa895e2555c224a486652f

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

            Filesize

            4KB

            MD5

            636c8230de66506aa2bdb3deee259503

            SHA1

            244299ce9ed66e9bed0c458c28fa3c417eeabdee

            SHA256

            98e7ebb0441c43ba079892f7fd1e9c1360d9d0e6d37575e452944fa0b08638d4

            SHA512

            fb5756dc8c9726be7b7629230ca5cf12c59f7d01225b9b73f08953bd02087bef10e1d2cdb6ed717776d683bd5ce523a069a6ab081992839a238056d57fc4eb6e

          • memory/452-89-0x00000000049B0000-0x00000000049C0000-memory.dmp

            Filesize

            64KB

          • memory/452-101-0x00000000074C0000-0x00000000074CE000-memory.dmp

            Filesize

            56KB

          • memory/452-111-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/452-41-0x0000000005980000-0x0000000005CD4000-memory.dmp

            Filesize

            3.3MB

          • memory/452-103-0x00000000075D0000-0x00000000075EA000-memory.dmp

            Filesize

            104KB

          • memory/452-15-0x0000000004A00000-0x0000000004A36000-memory.dmp

            Filesize

            216KB

          • memory/452-16-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/452-18-0x0000000005070000-0x0000000005698000-memory.dmp

            Filesize

            6.2MB

          • memory/452-17-0x00000000049B0000-0x00000000049C0000-memory.dmp

            Filesize

            64KB

          • memory/452-77-0x00000000758A0000-0x00000000758EC000-memory.dmp

            Filesize

            304KB

          • memory/452-95-0x0000000007510000-0x00000000075A6000-memory.dmp

            Filesize

            600KB

          • memory/452-92-0x00000000049B0000-0x00000000049C0000-memory.dmp

            Filesize

            64KB

          • memory/452-24-0x00000000057F0000-0x0000000005856000-memory.dmp

            Filesize

            408KB

          • memory/452-23-0x00000000056D0000-0x00000000056F2000-memory.dmp

            Filesize

            136KB

          • memory/1320-134-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/1320-122-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/1320-114-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/1320-118-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/1536-121-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1536-132-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1536-126-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1536-130-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/3412-0-0x00000000008C0000-0x00000000009CA000-memory.dmp

            Filesize

            1.0MB

          • memory/3412-5-0x0000000004E40000-0x0000000004E4A000-memory.dmp

            Filesize

            40KB

          • memory/3412-2-0x0000000007DA0000-0x0000000008344000-memory.dmp

            Filesize

            5.6MB

          • memory/3412-1-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/3412-50-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/3412-22-0x0000000007A80000-0x0000000007A90000-memory.dmp

            Filesize

            64KB

          • memory/3412-4-0x0000000007A80000-0x0000000007A90000-memory.dmp

            Filesize

            64KB

          • memory/3412-3-0x0000000007890000-0x0000000007922000-memory.dmp

            Filesize

            584KB

          • memory/3412-6-0x000000000A350000-0x000000000A3EC000-memory.dmp

            Filesize

            624KB

          • memory/3412-7-0x0000000007C40000-0x0000000007C54000-memory.dmp

            Filesize

            80KB

          • memory/3412-8-0x000000000A690000-0x000000000A69A000-memory.dmp

            Filesize

            40KB

          • memory/3412-9-0x000000000A6A0000-0x000000000A6AE000-memory.dmp

            Filesize

            56KB

          • memory/3412-10-0x000000000A790000-0x000000000A856000-memory.dmp

            Filesize

            792KB

          • memory/3412-19-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/4004-102-0x0000000007CC0000-0x0000000007CD4000-memory.dmp

            Filesize

            80KB

          • memory/4004-104-0x0000000007DA0000-0x0000000007DA8000-memory.dmp

            Filesize

            32KB

          • memory/4004-54-0x0000000006730000-0x000000000674E000-memory.dmp

            Filesize

            120KB

          • memory/4004-56-0x0000000006760000-0x00000000067AC000-memory.dmp

            Filesize

            304KB

          • memory/4004-26-0x00000000060E0000-0x0000000006146000-memory.dmp

            Filesize

            408KB

          • memory/4004-88-0x00000000080C0000-0x000000000873A000-memory.dmp

            Filesize

            6.5MB

          • memory/4004-59-0x0000000007720000-0x0000000007752000-memory.dmp

            Filesize

            200KB

          • memory/4004-20-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/4004-21-0x0000000002EB0000-0x0000000002EC0000-memory.dmp

            Filesize

            64KB

          • memory/4004-61-0x00000000758A0000-0x00000000758EC000-memory.dmp

            Filesize

            304KB

          • memory/4004-90-0x0000000007A80000-0x0000000007A9A000-memory.dmp

            Filesize

            104KB

          • memory/4004-94-0x0000000007AF0000-0x0000000007AFA000-memory.dmp

            Filesize

            40KB

          • memory/4004-60-0x000000007F320000-0x000000007F330000-memory.dmp

            Filesize

            64KB

          • memory/4004-96-0x0000000007C80000-0x0000000007C91000-memory.dmp

            Filesize

            68KB

          • memory/4004-112-0x0000000074FF0000-0x00000000757A0000-memory.dmp

            Filesize

            7.7MB

          • memory/4004-71-0x0000000006D20000-0x0000000006D3E000-memory.dmp

            Filesize

            120KB

          • memory/4004-73-0x0000000007960000-0x0000000007A03000-memory.dmp

            Filesize

            652KB

          • memory/4004-72-0x0000000002EB0000-0x0000000002EC0000-memory.dmp

            Filesize

            64KB

          • memory/4716-144-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/4716-146-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-99-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-97-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-74-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-93-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-91-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-179-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-58-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-178-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-171-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-57-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-55-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-87-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-170-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-76-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-51-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-52-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-136-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/4716-47-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-139-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/4716-141-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/4716-75-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-143-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-142-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-46-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-147-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-49-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-154-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-155-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-162-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/4716-163-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/5032-131-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/5032-125-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/5032-119-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/5032-115-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB