Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/10/2024, 01:41

General

  • Target

    a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe

  • Size

    1017KB

  • MD5

    673d693b0c8b68503d64ed15fd863d61

  • SHA1

    4fb6b11e933354b9f7c5bda096543a5d6b56ff83

  • SHA256

    a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4

  • SHA512

    3996083d6b2f207e742a81a1dd11277c1bdb2631438a0ee72eeec88a57ff39fb2a7c9a100b30bc2839519c3019129d2157e89d6ade8cc326c4073daf4cc2bd27

  • SSDEEP

    24576:myN887MU2cPnNupjbW/5OheoofVmhGmfCtquly:myNVQUPNudihOhRdhHIqul

Malware Config

Extracted

Family

remcos

Botnet

IRN

C2

irnserv1.ddns.net:4424

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-CA8761

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe
    "C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mDBLQPaU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3232
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mDBLQPaU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF368.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4304
    • C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe
      "C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe"
      2⤵
        PID:1348
      • C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe
        "C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe"
        2⤵
          PID:4956
        • C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe
          "C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe"
          2⤵
            PID:4924
          • C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe
            "C:\Users\Admin\AppData\Local\Temp\a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4.exe"
            2⤵
            • Checks computer location settings
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2712
            • C:\ProgramData\Remcos\remcos.exe
              "C:\ProgramData\Remcos\remcos.exe"
              3⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:5076
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mDBLQPaU.exe"
                4⤵
                • Command and Scripting Interpreter: PowerShell
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:400
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mDBLQPaU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp292E.tmp"
                4⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:3796
              • C:\ProgramData\Remcos\remcos.exe
                "C:\ProgramData\Remcos\remcos.exe"
                4⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • System Location Discovery: System Language Discovery
                • Suspicious use of SetWindowsHookEx
                PID:1068

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Remcos\logs.dat

          Filesize

          144B

          MD5

          6ab29626502f2b62dd3d16536bfe7923

          SHA1

          7d55c6a8c6ae671e27a90d6e7670d58ba454565f

          SHA256

          7e662206cf96b808f6cb44534f2c9039272138a257893bfdeac5d883498b2e1c

          SHA512

          c6a59bac6eb5a91c83c63fc12a8a6e12531ef65e8561b91202dcdbf59e43264fb602d003f266c10b73736640fd2341c5e45c8ae8280598630549be4663706079

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          1017KB

          MD5

          673d693b0c8b68503d64ed15fd863d61

          SHA1

          4fb6b11e933354b9f7c5bda096543a5d6b56ff83

          SHA256

          a77754ef6de4a61024e443178b88e50be8b1994f87b323ed7fa5f2f197acdab4

          SHA512

          3996083d6b2f207e742a81a1dd11277c1bdb2631438a0ee72eeec88a57ff39fb2a7c9a100b30bc2839519c3019129d2157e89d6ade8cc326c4073daf4cc2bd27

        • 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

          9c6404088091a8acb2ba5c8c2000e995

          SHA1

          972682a522685799829b3720a812ce1ad96722dd

          SHA256

          14fed612120e58bfda6f39ee4dc43924197568dbbb542287bf0ede6b6e27d883

          SHA512

          d09d740bbc679d3ac03ca3612efda6353b362715542fd2aaf870a4b0fe0155f138474de39dee9c03ca4c41db4aede505e6ed382c4ec99c6adb1430f94a7df5b3

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h4dxzu0m.dx0.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpF368.tmp

          Filesize

          1KB

          MD5

          80d32710a5a4a3ac2efaa909a6dd1d10

          SHA1

          6676ad0e0779aa1373c09819ac9d77fc1418e9b2

          SHA256

          39d55760bbd13b566374b19f168ef76fa168d2cc6b8a0b5e062029fe8f03e858

          SHA512

          9170d399c88a976098893a881bfd6a3ff9506b625594eaada3efc598a52a3de1521dd53bfddb1478d736a0b6143044e25e8799abab1179f1405118eab85c2321

        • memory/400-115-0x0000000007700000-0x0000000007714000-memory.dmp

          Filesize

          80KB

        • memory/400-114-0x00000000076C0000-0x00000000076D1000-memory.dmp

          Filesize

          68KB

        • memory/400-113-0x00000000073F0000-0x0000000007493000-memory.dmp

          Filesize

          652KB

        • memory/400-103-0x0000000073260000-0x00000000732AC000-memory.dmp

          Filesize

          304KB

        • memory/400-102-0x00000000061D0000-0x000000000621C000-memory.dmp

          Filesize

          304KB

        • memory/400-94-0x0000000005CF0000-0x0000000006044000-memory.dmp

          Filesize

          3.3MB

        • memory/1068-154-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-157-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-193-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-191-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-190-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-189-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-187-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-186-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-184-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-124-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-181-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-180-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-179-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-177-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-176-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-175-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-173-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-172-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-171-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-123-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-170-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-168-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-167-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-165-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-164-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-162-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-161-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-158-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-155-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-152-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-151-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-149-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-147-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-146-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-93-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-144-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-121-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-95-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-143-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-142-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-141-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-140-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-138-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-137-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-117-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-118-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-120-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-98-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-136-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-183-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-126-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-127-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-128-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-130-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-131-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-132-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1068-135-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1336-8-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/1336-9-0x0000000009580000-0x0000000009640000-memory.dmp

          Filesize

          768KB

        • memory/1336-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

          Filesize

          5.6MB

        • memory/1336-3-0x0000000005540000-0x00000000055D2000-memory.dmp

          Filesize

          584KB

        • memory/1336-4-0x00000000054F0000-0x00000000054FA000-memory.dmp

          Filesize

          40KB

        • memory/1336-5-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/1336-6-0x00000000056C0000-0x00000000056DE000-memory.dmp

          Filesize

          120KB

        • memory/1336-7-0x000000007479E000-0x000000007479F000-memory.dmp

          Filesize

          4KB

        • memory/1336-10-0x000000000C640000-0x000000000C6DC000-memory.dmp

          Filesize

          624KB

        • memory/1336-0-0x000000007479E000-0x000000007479F000-memory.dmp

          Filesize

          4KB

        • memory/1336-1-0x00000000009F0000-0x0000000000AF4000-memory.dmp

          Filesize

          1.0MB

        • memory/1336-40-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/2712-39-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2712-36-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2712-30-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2712-29-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2712-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3232-78-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-75-0x0000000007250000-0x0000000007258000-memory.dmp

          Filesize

          32KB

        • memory/3232-71-0x0000000007130000-0x0000000007141000-memory.dmp

          Filesize

          68KB

        • memory/3232-67-0x0000000007570000-0x0000000007BEA000-memory.dmp

          Filesize

          6.5MB

        • memory/3232-18-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-66-0x0000000006C00000-0x0000000006CA3000-memory.dmp

          Filesize

          652KB

        • memory/3232-55-0x0000000070A60000-0x0000000070AAC000-memory.dmp

          Filesize

          304KB

        • memory/3232-65-0x0000000006BD0000-0x0000000006BEE000-memory.dmp

          Filesize

          120KB

        • memory/3232-51-0x0000000005FD0000-0x000000000601C000-memory.dmp

          Filesize

          304KB

        • memory/3232-68-0x0000000006F30000-0x0000000006F4A000-memory.dmp

          Filesize

          104KB

        • memory/3232-48-0x0000000005C10000-0x0000000005C2E000-memory.dmp

          Filesize

          120KB

        • memory/3232-72-0x0000000007160000-0x000000000716E000-memory.dmp

          Filesize

          56KB

        • memory/3232-73-0x0000000007170000-0x0000000007184000-memory.dmp

          Filesize

          80KB

        • memory/3232-70-0x00000000071B0000-0x0000000007246000-memory.dmp

          Filesize

          600KB

        • memory/3232-37-0x00000000055F0000-0x0000000005944000-memory.dmp

          Filesize

          3.3MB

        • memory/3232-74-0x0000000007270000-0x000000000728A000-memory.dmp

          Filesize

          104KB

        • memory/3232-22-0x0000000005360000-0x00000000053C6000-memory.dmp

          Filesize

          408KB

        • memory/3232-69-0x0000000006FA0000-0x0000000006FAA000-memory.dmp

          Filesize

          40KB

        • memory/3232-54-0x00000000061E0000-0x0000000006212000-memory.dmp

          Filesize

          200KB

        • memory/3232-15-0x0000000004680000-0x00000000046B6000-memory.dmp

          Filesize

          216KB

        • memory/3232-23-0x0000000005480000-0x00000000054E6000-memory.dmp

          Filesize

          408KB

        • memory/3232-21-0x0000000004B30000-0x0000000004B52000-memory.dmp

          Filesize

          136KB

        • memory/3232-16-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-20-0x0000000074790000-0x0000000074F40000-memory.dmp

          Filesize

          7.7MB

        • memory/3232-17-0x0000000004D30000-0x0000000005358000-memory.dmp

          Filesize

          6.2MB