Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-09-2024 11:48

General

  • Target

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe

  • Size

    1.0MB

  • MD5

    6aa8b2797c962a2bfbed78a30afa3f4a

  • SHA1

    1c76e253db167d7c6a685282973c1bc80bbe8e5e

  • SHA256

    cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f

  • SHA512

    ce9ba1c1282e0d87665bbe27749106de3c42ee7b2bc9e741586ad643129c01f2c7421d1afc98b599568c4fd1e229fcf08d19503426b6507db6f45e222903b145

  • SSDEEP

    24576:0HH6h1OoaYANm0loL58KwewFARcqlE3r9HMQKw:k8t0loL58KwLgQ7lMQKw

Malware Config

Extracted

Family

remcos

Botnet

Aug 19.2

C2

method8888.ddns.net:6902

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-U6KI2M

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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 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).

  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
    "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3796
    • 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\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:428
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GIxoePCFR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1432
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GIxoePCFR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B7.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:660
    • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
      "C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
        C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\mpcgxzhuaxsci"
        3⤵
          PID:4424
        • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
          C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\mpcgxzhuaxsci"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4156
        • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
          C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wrhzyrsonfkpteyb"
          3⤵
            PID:1780
          • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
            C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\wrhzyrsonfkpteyb"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:620
          • C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe
            C:\Users\Admin\AppData\Local\Temp\cda34c7ddc45a0ac67f0f3745b91686c285bc86f108c5c2deb36c1c3a0fb5a4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\glnkzkdpbncuvsmfmny"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3092
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4328,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=1440 /prefetch:8
        1⤵
          PID:1032

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          3770f6d5cb66c1719b2f5b6e83b7ee9f

          SHA1

          c581675482a84acbf6c783c45b2df64906718594

          SHA256

          eaf356839f94b644a8de459db98ac449b8a6d16896c7be55d4fc59c4d0523d66

          SHA512

          0ffb22681738a9bab281d271c2c674026cbd47e8776ff2b6b0a2949bb40007cf75cdf3c6e4ccbdfe559d535af9eb5665dca71bfd6b9fbcf2e070c16f3decc305

        • 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

          1c7a42d0550ce20a368f80bb1a24cbb2

          SHA1

          7fe3f8f21119c1f6f40446e2830bc406f79d2c3e

          SHA256

          486dbf889cfece0626ff7aef6c70f16430a48e7fef45c9de174e39856e9f768b

          SHA512

          ff5f4cd7e9f77d5f80608099fb153e97d4f31360e7c4b284d4230c160d2d9d57da3a15e3d1ade5546513cedf55ebd0c9b2c5fd956adeef12e0e90eb557845820

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vzzpxjyk.v2i.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          4KB

          MD5

          cda83eba5a004554ccdc061fd3df499c

          SHA1

          58ff2ecb9d47be10335e104896c87c62dc328523

          SHA256

          e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

          SHA512

          f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

        • C:\Users\Admin\AppData\Local\Temp\tmp7B7.tmp

          Filesize

          1KB

          MD5

          ed4bc1f1434e43a8bd56b6285274b9f6

          SHA1

          253f3812b49666e9a71159bf39db687e7445ae51

          SHA256

          3b369e6be49fef047eb34ce51411d3c58cbff3c142aea8b39cf5f31a23d75750

          SHA512

          3273956315874d02ab91642bceb0cead13c60409a7300b6474bb17059105a2b958c5c9f9a398c3c9bd31447314793979a3bc2f90613c9d709a2dbfc3a0414c37

        • memory/428-73-0x0000000006C90000-0x0000000006D33000-memory.dmp

          Filesize

          652KB

        • memory/428-78-0x0000000006E40000-0x0000000006E4A000-memory.dmp

          Filesize

          40KB

        • memory/428-72-0x0000000006A70000-0x0000000006A8E000-memory.dmp

          Filesize

          120KB

        • memory/428-111-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/428-108-0x00000000070F0000-0x00000000070F8000-memory.dmp

          Filesize

          32KB

        • memory/428-74-0x0000000007410000-0x0000000007A8A000-memory.dmp

          Filesize

          6.5MB

        • memory/428-17-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/428-16-0x0000000002170000-0x00000000021A6000-memory.dmp

          Filesize

          216KB

        • memory/428-19-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/428-18-0x0000000004BC0000-0x00000000051E8000-memory.dmp

          Filesize

          6.2MB

        • memory/428-20-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/428-61-0x0000000006050000-0x0000000006082000-memory.dmp

          Filesize

          200KB

        • memory/428-107-0x0000000007110000-0x000000000712A000-memory.dmp

          Filesize

          104KB

        • memory/428-23-0x0000000005250000-0x0000000005272000-memory.dmp

          Filesize

          136KB

        • memory/428-106-0x0000000007010000-0x0000000007024000-memory.dmp

          Filesize

          80KB

        • memory/428-75-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

          Filesize

          104KB

        • memory/428-25-0x0000000005450000-0x00000000054B6000-memory.dmp

          Filesize

          408KB

        • memory/428-36-0x00000000055C0000-0x0000000005914000-memory.dmp

          Filesize

          3.3MB

        • memory/428-102-0x0000000007000000-0x000000000700E000-memory.dmp

          Filesize

          56KB

        • memory/428-89-0x0000000007050000-0x00000000070E6000-memory.dmp

          Filesize

          600KB

        • memory/428-56-0x0000000005E70000-0x0000000005EBC000-memory.dmp

          Filesize

          304KB

        • memory/428-24-0x00000000052F0000-0x0000000005356000-memory.dmp

          Filesize

          408KB

        • memory/428-62-0x0000000074D40000-0x0000000074D8C000-memory.dmp

          Filesize

          304KB

        • memory/428-90-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

          Filesize

          68KB

        • memory/428-55-0x0000000005A80000-0x0000000005A9E000-memory.dmp

          Filesize

          120KB

        • memory/620-96-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/620-95-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/620-94-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1432-79-0x0000000074D40000-0x0000000074D8C000-memory.dmp

          Filesize

          304KB

        • memory/1432-31-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/1432-21-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/1432-115-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/2760-38-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-124-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2760-59-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-60-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-153-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-144-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-58-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-54-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-152-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-145-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-77-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-137-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-136-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-129-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-127-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2760-128-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/2760-100-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-101-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2760-37-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3092-99-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3092-98-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3092-97-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3796-1-0x00000000003A0000-0x00000000004A8000-memory.dmp

          Filesize

          1.0MB

        • memory/3796-9-0x00000000054F0000-0x0000000005500000-memory.dmp

          Filesize

          64KB

        • memory/3796-3-0x0000000004E90000-0x0000000004F22000-memory.dmp

          Filesize

          584KB

        • memory/3796-8-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/3796-11-0x00000000065C0000-0x000000000665C000-memory.dmp

          Filesize

          624KB

        • memory/3796-53-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/3796-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

          Filesize

          4KB

        • memory/3796-2-0x0000000005510000-0x0000000005AB4000-memory.dmp

          Filesize

          5.6MB

        • memory/3796-7-0x00000000744BE000-0x00000000744BF000-memory.dmp

          Filesize

          4KB

        • memory/3796-5-0x00000000744B0000-0x0000000074C60000-memory.dmp

          Filesize

          7.7MB

        • memory/3796-4-0x0000000004F40000-0x0000000004F4A000-memory.dmp

          Filesize

          40KB

        • memory/3796-10-0x0000000006660000-0x0000000006720000-memory.dmp

          Filesize

          768KB

        • memory/3796-6-0x00000000054D0000-0x00000000054E2000-memory.dmp

          Filesize

          72KB

        • memory/4156-92-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4156-93-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/4156-91-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB