Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 01:48

General

  • Target

    d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe

  • Size

    931KB

  • MD5

    c8b97aad582adb6ccddc6f3e74bda215

  • SHA1

    bbf2e45bd5af0695f5f82fed5728a480a7fd4c04

  • SHA256

    d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34

  • SHA512

    7ede8146da39ea716cd6c64f3a60ca324566c3000cb5c1275f5f1563cca726ec8b97420c7e4620f4fe998f8542896bb99294cef83a7e8bfae2e1e46fb4bbc100

  • SSDEEP

    24576:9elw4o5E6Gkf1CGkuH2sz6rtlHa08qsCJAUke0O:9elw4o5E+C1ttl605X3ko

Malware Config

Extracted

Family

remcos

Botnet

Sept. 04C

C2

154.216.20.211:6902

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-YGC9WY

  • 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 4 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 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 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 16 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
    "C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.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:3876
    • 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\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2460
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iVWcGN.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4112
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iVWcGN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp15E4.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3056
    • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
      "C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe"
      2⤵
        PID:1408
      • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
        "C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe"
        2⤵
          PID:4896
        • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
          "C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3708
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\zdwntgvkkeuao"
            3⤵
            • Suspicious use of UnmapMainImage
            PID:3352
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 12
              4⤵
              • Program crash
              PID:2644
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\bfbyurgdymmfqmoj"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4812
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\mzpqvjqfmvekaaknznui"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4680
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\riqasivkozaq"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2416
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\tkvttbgmchsvznr"
            3⤵
            • Suspicious use of UnmapMainImage
            PID:3040
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 12
              4⤵
              • Program crash
              PID:3000
          • C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe
            C:\Users\Admin\AppData\Local\Temp\d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34.exe /stext "C:\Users\Admin\AppData\Local\Temp\deadttrfxpkabbnfky"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1084
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3352 -ip 3352
        1⤵
          PID:1796
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3040 -ip 3040
          1⤵
            PID:4088

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\remcos\logs.dat

            Filesize

            144B

            MD5

            2fca6079e3cdf3a8c8f6464c9a42c8b3

            SHA1

            7ba3356ec3884dabbc16522104d20f6076a1661d

            SHA256

            fda39078d7f252cc025cbf3d5904346c6647660cabd773f433991acd26c5e8f0

            SHA512

            51ecc94ff361aad7dfc8e068cb4bf10e9e234c27f458a7fdcb727d283ce0df31ca701cca38047c963a607872aa6f2a13c14f09120e17b1ac54da0c39b5192b44

          • 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

            7d3320a37df7b5c8b52fd3f0e10152f9

            SHA1

            7c7422c9654d1f41abc083424aa7118f9bdf352b

            SHA256

            a1b8bceb7741d9f87ff54e040ba9101d4e94c79c6c894dabfcb1b27cf0b2448a

            SHA512

            bb4f3177d5f156547fcb232656874d89ca04963c9fd0a80c6b60f7bb3ff7d0d6416bc95868b9b84b13741186f84ac1991cb640e75feffbe25e2f9c0b26827847

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p50x1ce4.ubh.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

            Filesize

            4KB

            MD5

            c0ab2847671ed5375328c5127a02cc72

            SHA1

            dc2bcb51562fb17e5c8787833bc0181d88a5b75e

            SHA256

            e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

            SHA512

            0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

          • C:\Users\Admin\AppData\Local\Temp\tmp15E4.tmp

            Filesize

            1KB

            MD5

            71ef0f974d88bc55f2143837da201882

            SHA1

            cdef65d177c4f15f5c3f70b28626f2d5fdd97d82

            SHA256

            b42870ed1a88d2785ac61f6713c9dc3e0eb039fe07623100621a794055c1b253

            SHA512

            a515130d17c1f9c310c7802eea5345a02ad6e3fca84bc31770c86ec966bdd71f5396b5e5eeda509f1a49e298e72918672698ca26051f5dfd09e06d4152fc8327

          • memory/1084-114-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1084-115-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2416-116-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2416-112-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2460-34-0x0000000006310000-0x0000000006664000-memory.dmp

            Filesize

            3.3MB

          • memory/2460-24-0x0000000005AB0000-0x0000000005B16000-memory.dmp

            Filesize

            408KB

          • memory/2460-16-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/2460-17-0x0000000005B20000-0x0000000006148000-memory.dmp

            Filesize

            6.2MB

          • memory/2460-18-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/2460-107-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/2460-99-0x0000000007EA0000-0x0000000007EB4000-memory.dmp

            Filesize

            80KB

          • memory/2460-15-0x0000000005370000-0x00000000053A6000-memory.dmp

            Filesize

            216KB

          • memory/2460-21-0x0000000005990000-0x00000000059B2000-memory.dmp

            Filesize

            136KB

          • memory/2460-79-0x000000006F800000-0x000000006F84C000-memory.dmp

            Filesize

            304KB

          • memory/2460-55-0x0000000006E10000-0x0000000006E5C000-memory.dmp

            Filesize

            304KB

          • memory/2460-54-0x0000000006950000-0x000000000696E000-memory.dmp

            Filesize

            120KB

          • memory/2460-45-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/2460-22-0x0000000005A40000-0x0000000005AA6000-memory.dmp

            Filesize

            408KB

          • memory/3352-89-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/3708-52-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-138-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-46-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-154-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-51-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-47-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-123-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3708-127-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3708-58-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-59-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-57-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-60-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-62-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-153-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-48-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-145-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-146-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-126-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3708-137-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-128-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-129-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3708-130-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3876-9-0x0000000006D20000-0x0000000006DE0000-memory.dmp

            Filesize

            768KB

          • memory/3876-1-0x0000000000FE0000-0x00000000010CC000-memory.dmp

            Filesize

            944KB

          • memory/3876-8-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/3876-56-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/3876-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

            Filesize

            4KB

          • memory/3876-2-0x0000000006170000-0x0000000006714000-memory.dmp

            Filesize

            5.6MB

          • memory/3876-3-0x0000000005AB0000-0x0000000005B42000-memory.dmp

            Filesize

            584KB

          • memory/3876-4-0x0000000005B60000-0x0000000005B6A000-memory.dmp

            Filesize

            40KB

          • memory/3876-5-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/3876-10-0x0000000007000000-0x000000000709C000-memory.dmp

            Filesize

            624KB

          • memory/3876-6-0x0000000005E80000-0x0000000005E98000-memory.dmp

            Filesize

            96KB

          • memory/3876-7-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

            Filesize

            4KB

          • memory/4112-75-0x0000000007080000-0x0000000007123000-memory.dmp

            Filesize

            652KB

          • memory/4112-76-0x0000000007800000-0x0000000007E7A000-memory.dmp

            Filesize

            6.5MB

          • memory/4112-108-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/4112-19-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/4112-100-0x0000000007500000-0x000000000751A000-memory.dmp

            Filesize

            104KB

          • memory/4112-98-0x00000000073F0000-0x00000000073FE000-memory.dmp

            Filesize

            56KB

          • memory/4112-97-0x00000000073C0000-0x00000000073D1000-memory.dmp

            Filesize

            68KB

          • memory/4112-44-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/4112-63-0x0000000007040000-0x0000000007072000-memory.dmp

            Filesize

            200KB

          • memory/4112-93-0x0000000007440000-0x00000000074D6000-memory.dmp

            Filesize

            600KB

          • memory/4112-74-0x0000000006460000-0x000000000647E000-memory.dmp

            Filesize

            120KB

          • memory/4112-64-0x000000006F800000-0x000000006F84C000-memory.dmp

            Filesize

            304KB

          • memory/4112-77-0x00000000071C0000-0x00000000071DA000-memory.dmp

            Filesize

            104KB

          • memory/4112-101-0x00000000074E0000-0x00000000074E8000-memory.dmp

            Filesize

            32KB

          • memory/4112-23-0x0000000074EB0000-0x0000000075660000-memory.dmp

            Filesize

            7.7MB

          • memory/4112-78-0x0000000007230000-0x000000000723A000-memory.dmp

            Filesize

            40KB

          • memory/4680-92-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4680-95-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4680-94-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/4812-96-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4812-91-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/4812-90-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB