Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-08-2024 15:36

General

  • Target

    86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe

  • Size

    928KB

  • MD5

    04d4d4d83e1601d220f83f09ae16cd79

  • SHA1

    4f0a7d8060399a7ae5029690bdee2bf3b2e3e395

  • SHA256

    86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8

  • SHA512

    87747374bd1c72c9d33d2af9e7456617c95e6c100788f16123bf15cb1c6748a13ad1ac9b5a967553fdf668ea226033a741c08f45febc2130a7e50ccabe69333c

  • SSDEEP

    24576:bhdtlx9EP2aKUQ6/FfCH1bGl4rg5YWNexNBpqod:bhdrY+aPQiFgDWcxNzqi

Malware Config

Extracted

Family

remcos

Botnet

AUG 26

C2

sungito2.ddns.net:6509

154.216.19.222:5532

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-LXAZN2

  • 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 5 IoCs

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

  • NirSoft MailPassView 2 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 1 IoCs

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

  • 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 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
    "C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:248
    • 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\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5112
    • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
      "C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe"
      2⤵
        PID:1388
      • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
        "C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:668
        • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
          C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\hbduyxqfrfgtzmrelwitueuwmkpjcsruyi"
          3⤵
            PID:3748
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 28
              4⤵
              • Program crash
              PID:4984
          • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
            C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\kwrnzp"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:1088
          • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
            C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\uywfaimabw"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2692
          • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
            C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\ofsxwggmosvwyzgsmddpgfnwgjvfw"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:1328
          • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
            C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\zhxpxzrfcanjanuwwoqijjhnppmopfkdo"
            3⤵
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:3624
          • C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe
            C:\Users\Admin\AppData\Local\Temp\86b19710e100964d95cfa01201152d4e73f1297f7286207feeb01cdb7e55efc8.exe /stext "C:\Users\Admin\AppData\Local\Temp\jbcay"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1748
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3748 -ip 3748
        1⤵
          PID:1048

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          dfe46336173b0987213f491809019c6f

          SHA1

          cd1d7005a65fc4f4c03ce6d1b6357b4f1a8889c9

          SHA256

          e8c957be65d5690f5a4b0e721e92ffacfe47570e57fb74c267c52218cb3fa80e

          SHA512

          6b8f6cdf12b7691a9f82301cca669955a5e3f5e49a185e1621e7eedcd8c4120a45e621b756fb220bd43631edc1487970561ec968dc450bee24f4dfa8fa63f5af

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1bf4zv2i.wqh.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • memory/248-6-0x0000000008310000-0x0000000008328000-memory.dmp

          Filesize

          96KB

        • memory/248-4-0x00000000057D0000-0x00000000057DA000-memory.dmp

          Filesize

          40KB

        • memory/248-5-0x0000000074FA0000-0x0000000075751000-memory.dmp

          Filesize

          7.7MB

        • memory/248-0-0x0000000074FAE000-0x0000000074FAF000-memory.dmp

          Filesize

          4KB

        • memory/248-7-0x0000000074FAE000-0x0000000074FAF000-memory.dmp

          Filesize

          4KB

        • memory/248-8-0x0000000074FA0000-0x0000000075751000-memory.dmp

          Filesize

          7.7MB

        • memory/248-9-0x0000000008470000-0x0000000008530000-memory.dmp

          Filesize

          768KB

        • memory/248-10-0x000000000AC90000-0x000000000AD2C000-memory.dmp

          Filesize

          624KB

        • memory/248-3-0x0000000005850000-0x00000000058E2000-memory.dmp

          Filesize

          584KB

        • memory/248-2-0x0000000005E00000-0x00000000063A6000-memory.dmp

          Filesize

          5.6MB

        • memory/248-1-0x0000000000C40000-0x0000000000D2A000-memory.dmp

          Filesize

          936KB

        • memory/248-20-0x0000000074FA0000-0x0000000075751000-memory.dmp

          Filesize

          7.7MB

        • memory/668-13-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-45-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-15-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-18-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-22-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-133-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-118-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-25-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-117-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-109-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-110-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-11-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-78-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-103-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-102-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-41-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-40-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-42-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-43-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-134-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-101-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/668-100-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/668-97-0x0000000010000000-0x0000000010019000-memory.dmp

          Filesize

          100KB

        • memory/668-12-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/668-79-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/1088-62-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1088-65-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1088-61-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1328-85-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1328-87-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/1748-90-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/1748-94-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2692-63-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2692-64-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/2692-66-0x0000000000400000-0x0000000000424000-memory.dmp

          Filesize

          144KB

        • memory/3624-86-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3624-88-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/3748-60-0x0000000000400000-0x0000000000478000-memory.dmp

          Filesize

          480KB

        • memory/5112-21-0x00000000026C0000-0x00000000026F6000-memory.dmp

          Filesize

          216KB

        • memory/5112-76-0x0000000074FA0000-0x0000000075751000-memory.dmp

          Filesize

          7.7MB

        • memory/5112-77-0x0000000000400000-0x0000000000469000-memory.dmp

          Filesize

          420KB

        • memory/5112-73-0x0000000007550000-0x0000000007558000-memory.dmp

          Filesize

          32KB

        • memory/5112-72-0x0000000007560000-0x000000000757A000-memory.dmp

          Filesize

          104KB

        • memory/5112-71-0x0000000007460000-0x0000000007475000-memory.dmp

          Filesize

          84KB

        • memory/5112-70-0x0000000007450000-0x000000000745E000-memory.dmp

          Filesize

          56KB

        • memory/5112-69-0x0000000007420000-0x0000000007431000-memory.dmp

          Filesize

          68KB

        • memory/5112-68-0x00000000074A0000-0x0000000007536000-memory.dmp

          Filesize

          600KB

        • memory/5112-67-0x0000000007290000-0x000000000729A000-memory.dmp

          Filesize

          40KB

        • memory/5112-59-0x0000000007210000-0x000000000722A000-memory.dmp

          Filesize

          104KB

        • memory/5112-58-0x0000000007850000-0x0000000007ECA000-memory.dmp

          Filesize

          6.5MB

        • memory/5112-57-0x0000000006ED0000-0x0000000006F74000-memory.dmp

          Filesize

          656KB

        • memory/5112-56-0x0000000006EB0000-0x0000000006ECE000-memory.dmp

          Filesize

          120KB

        • memory/5112-47-0x0000000071640000-0x000000007168C000-memory.dmp

          Filesize

          304KB

        • memory/5112-46-0x0000000006E70000-0x0000000006EA4000-memory.dmp

          Filesize

          208KB

        • memory/5112-39-0x0000000005F00000-0x0000000005F4C000-memory.dmp

          Filesize

          304KB

        • memory/5112-38-0x0000000005EB0000-0x0000000005ECE000-memory.dmp

          Filesize

          120KB

        • memory/5112-37-0x0000000005AC0000-0x0000000005E17000-memory.dmp

          Filesize

          3.3MB

        • memory/5112-27-0x0000000005130000-0x0000000005196000-memory.dmp

          Filesize

          408KB

        • memory/5112-28-0x00000000059C0000-0x0000000005A26000-memory.dmp

          Filesize

          408KB

        • memory/5112-26-0x0000000005010000-0x0000000005032000-memory.dmp

          Filesize

          136KB

        • memory/5112-24-0x0000000005320000-0x000000000594A000-memory.dmp

          Filesize

          6.2MB

        • memory/5112-23-0x0000000000400000-0x0000000000469000-memory.dmp

          Filesize

          420KB

        • memory/5112-19-0x0000000074FA0000-0x0000000075751000-memory.dmp

          Filesize

          7.7MB