Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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, 02:39

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 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 17 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 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:3932
    • 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:1020
    • 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:4668
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bZurkfs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C83.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4788
    • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
      "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
      2⤵
        PID:4780
      • 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:4688
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\fryjxsbwwzzvwjgfzktfgujgobbexyuofu"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4756
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\pmltyl"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3924
        • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
          C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe /stext "C:\Users\Admin\AppData\Local\Temp\zoqmzdwrg"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2764
      • C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe
        "C:\Users\Admin\AppData\Local\Temp\3758ece40a4e7fdefd1d742e694dc86ddbd87f1d78bafcfb48934c450630d10b.exe"
        2⤵
          PID:3608

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\ProgramData\remcos\logs.dat

              Filesize

              144B

              MD5

              9aa4b078265adbb6492b1f982484fa1a

              SHA1

              8dfc7ceb9bda99c5d8a4a185c50f4edd0c70f5d1

              SHA256

              8f23ff2f91a0de3386c3c2134741684f91b8695f9f7c9b8cf43a706b8b0798b4

              SHA512

              5f13c8aec0b59029c7c9d635865b8b70601d142c6c5bae8966a3f5b9f8f6035676f5f52306d9af4839cb35fd4fff2115b776f47e262c421667294adb27584c76

            • 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

              a93916c9140474d94083883ca0dbaab2

              SHA1

              3da7e3c2114124214d680302c71be7e753f1c108

              SHA256

              596ae82910e6c65d7acf59768a51bcabe552e1ef6548a68050d8f3b89ecb7090

              SHA512

              e88f9530f9f70c10400f2494bae88758c32131c412369e364f456261f6b7c052be76585dd622db9818e64b03e77dfed76a879b9cbed1e5976fb22c5040025b83

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ghzwiu1c.vyp.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

              Filesize

              4KB

              MD5

              2cbe8873d9d19e766fd9a1f758da8e74

              SHA1

              544271b8bf2aa7108e9f0f1cf11de5eb2a389f17

              SHA256

              b92f48c215f2d309a748e67787283bb2c61bbce1faf7dcb3b917f57be92b28e2

              SHA512

              4f8842cfc7b97b82e5f105aeb1b838f9f50072d3f9cae7412e09c0f8fb592a40fc6064cd9ef8e67133ec5694590d106d3e3141e2fd0a21c3d32d6340068ca632

            • C:\Users\Admin\AppData\Local\Temp\tmp7C83.tmp

              Filesize

              1KB

              MD5

              ad81223addb11ebb92c7174a2650c7b9

              SHA1

              a3e8b2f33583879b22cdf2b73c5156ac08e6145b

              SHA256

              03454a2d05e1c0dcb44f10acea7101f59f0f177d3adc36b1d7e6d12e42d3863d

              SHA512

              34a6b7934f924977fed49d6932aceb146c2ab7d8bfd77bc55a49e96e2a4ca4f2d1c853babb344832ce729bfed901d9c2613434a27f58161688a29641af2bdd67

            • memory/1020-60-0x0000000073510000-0x000000007355C000-memory.dmp

              Filesize

              304KB

            • memory/1020-83-0x0000000007930000-0x00000000079D3000-memory.dmp

              Filesize

              652KB

            • memory/1020-71-0x0000000006CE0000-0x0000000006CFE000-memory.dmp

              Filesize

              120KB

            • memory/1020-109-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/1020-101-0x0000000007DB0000-0x0000000007DCA000-memory.dmp

              Filesize

              104KB

            • memory/1020-15-0x0000000005190000-0x00000000051C6000-memory.dmp

              Filesize

              216KB

            • memory/1020-16-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/1020-17-0x0000000005880000-0x0000000005EA8000-memory.dmp

              Filesize

              6.2MB

            • memory/1020-18-0x0000000005240000-0x0000000005250000-memory.dmp

              Filesize

              64KB

            • memory/1020-24-0x0000000005240000-0x0000000005250000-memory.dmp

              Filesize

              64KB

            • memory/1020-19-0x0000000005690000-0x00000000056B2000-memory.dmp

              Filesize

              136KB

            • memory/1020-94-0x0000000007C70000-0x0000000007C81000-memory.dmp

              Filesize

              68KB

            • memory/1020-59-0x000000007FD50000-0x000000007FD60000-memory.dmp

              Filesize

              64KB

            • memory/1020-73-0x0000000005240000-0x0000000005250000-memory.dmp

              Filesize

              64KB

            • memory/1020-25-0x0000000006120000-0x0000000006186000-memory.dmp

              Filesize

              408KB

            • memory/2764-116-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2764-128-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2764-130-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2764-122-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/3924-118-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3924-129-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3924-113-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3924-126-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/3932-2-0x0000000007C10000-0x00000000081B4000-memory.dmp

              Filesize

              5.6MB

            • memory/3932-3-0x0000000007660000-0x00000000076F2000-memory.dmp

              Filesize

              584KB

            • memory/3932-4-0x00000000078D0000-0x00000000078E0000-memory.dmp

              Filesize

              64KB

            • memory/3932-10-0x000000000A580000-0x000000000A646000-memory.dmp

              Filesize

              792KB

            • memory/3932-49-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/3932-5-0x0000000004C30000-0x0000000004C3A000-memory.dmp

              Filesize

              40KB

            • memory/3932-0-0x00000000006B0000-0x00000000007BA000-memory.dmp

              Filesize

              1.0MB

            • memory/3932-6-0x000000000A140000-0x000000000A1DC000-memory.dmp

              Filesize

              624KB

            • memory/3932-1-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/3932-7-0x000000000A090000-0x000000000A0A4000-memory.dmp

              Filesize

              80KB

            • memory/3932-9-0x000000000A490000-0x000000000A49E000-memory.dmp

              Filesize

              56KB

            • memory/3932-8-0x000000000A480000-0x000000000A48A000-memory.dmp

              Filesize

              40KB

            • memory/4668-90-0x0000000007540000-0x0000000007BBA000-memory.dmp

              Filesize

              6.5MB

            • memory/4668-110-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/4668-91-0x0000000006F00000-0x0000000006F1A000-memory.dmp

              Filesize

              104KB

            • memory/4668-55-0x0000000005BE0000-0x0000000005BFE000-memory.dmp

              Filesize

              120KB

            • memory/4668-56-0x0000000005C70000-0x0000000005CBC000-memory.dmp

              Filesize

              304KB

            • memory/4668-57-0x000000007F8A0000-0x000000007F8B0000-memory.dmp

              Filesize

              64KB

            • memory/4668-92-0x0000000006F70000-0x0000000006F7A000-memory.dmp

              Filesize

              40KB

            • memory/4668-22-0x00000000054F0000-0x0000000005556000-memory.dmp

              Filesize

              408KB

            • memory/4668-61-0x0000000073510000-0x000000007355C000-memory.dmp

              Filesize

              304KB

            • memory/4668-93-0x0000000007180000-0x0000000007216000-memory.dmp

              Filesize

              600KB

            • memory/4668-23-0x0000000004710000-0x0000000004720000-memory.dmp

              Filesize

              64KB

            • memory/4668-58-0x00000000061B0000-0x00000000061E2000-memory.dmp

              Filesize

              200KB

            • memory/4668-21-0x0000000074A40000-0x00000000751F0000-memory.dmp

              Filesize

              7.7MB

            • memory/4668-26-0x0000000005640000-0x0000000005994000-memory.dmp

              Filesize

              3.3MB

            • memory/4668-84-0x0000000004710000-0x0000000004720000-memory.dmp

              Filesize

              64KB

            • memory/4668-100-0x0000000007140000-0x0000000007154000-memory.dmp

              Filesize

              80KB

            • memory/4668-98-0x0000000007130000-0x000000000713E000-memory.dmp

              Filesize

              56KB

            • memory/4668-102-0x0000000007220000-0x0000000007228000-memory.dmp

              Filesize

              32KB

            • memory/4688-53-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-140-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/4688-87-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-99-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-97-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-176-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-46-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-96-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-175-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-37-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-168-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-72-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-85-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-89-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-52-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-54-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-167-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-88-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-139-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-138-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/4688-137-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/4688-134-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/4688-48-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-142-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-144-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-145-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-50-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-151-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-152-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-159-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4688-160-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/4756-132-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/4756-115-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/4756-120-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/4756-111-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB