Analysis

  • max time kernel
    151s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18-04-2024 01:18

General

  • Target

    ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe

  • Size

    993KB

  • MD5

    1d8293e3afb0f662daa9cb98f261b242

  • SHA1

    fc360154f0ecf671a51cc98477b784cb8931957f

  • SHA256

    ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e

  • SHA512

    be20420bc2ea105d67e7564485f3a29266091eafa7904e3bd2e1552eea98be19a44a78974c1d0a4d4bc9c33e1ef04cde1752941712e8350ff65914c60d1ad495

  • SSDEEP

    24576:vym/SbQP4ZuM15cTGdwAXImx0cvlG6kNGgGXAe7ZtVx:vy6SbQP4ZuMcpYIwv7kAweTVx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

176.31.142.221:7769

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-QLWO0M

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 15 IoCs
  • Detects executables built or packed with MPress PE compressor 21 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 5 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs
  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 12 IoCs
  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
    "C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sBdQfHqbIm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2592
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sBdQfHqbIm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88FE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2744
    • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
      "C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2508
      • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
        C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\yifdqb"
        3⤵
          PID:2276
        • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
          C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\yifdqb"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1204
        • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
          C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\jlkwrtnqh"
          3⤵
            PID:836
          • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
            C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\jlkwrtnqh"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:2432
          • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
            C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\lfygsmxkvvhdn"
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1816
          • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
            C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\qwrqp"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:2064
          • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
            C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\aqejpdnr"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:1308
          • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
            C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\dkkuqoysgqn"
            3⤵
              PID:3068
            • C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe
              C:\Users\Admin\AppData\Local\Temp\ad4c85f8557f27d634c576983d359095dba4fd7a7f2e614ec6615109d106ce9e.exe /stext "C:\Users\Admin\AppData\Local\Temp\dkkuqoysgqn"
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1164

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Execution

        Scheduled Task/Job

        1
        T1053

        Persistence

        Scheduled Task/Job

        1
        T1053

        Privilege Escalation

        Scheduled Task/Job

        1
        T1053

        Credential Access

        Unsecured Credentials

        1
        T1552

        Credentials In Files

        1
        T1552.001

        Discovery

        System Information Discovery

        1
        T1082

        Collection

        Data from Local System

        1
        T1005

        Email Collection

        1
        T1114

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\qwrqp
          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\tmp88FE.tmp
          Filesize

          1KB

          MD5

          b782dd387095fc8929a65a1e1ea7acac

          SHA1

          f7b6c772a31fa72e25790b47bdc181d71879ebe2

          SHA256

          ef86352fc497711e3dc2b169721a4f4e8e58d8326551029e805c66d4b7338e89

          SHA512

          c49aa93e051775942f761c162a16a30b0328701f5902329019a9034b9cfb2c5cf259e464931b92e516360bf992d238112fe367b21d33c35ef98f9e05ca294a55

        • memory/1164-99-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1204-78-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/1204-57-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/1204-60-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/1204-52-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/1308-98-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/1308-95-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/1816-71-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1816-69-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1816-65-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1816-67-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/1816-63-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/2064-79-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
          Filesize

          4KB

        • memory/2064-104-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/2432-70-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/2432-68-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/2432-66-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/2432-114-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/2432-56-0x0000000000400000-0x0000000000462000-memory.dmp
          Filesize

          392KB

        • memory/2508-20-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-22-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-37-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-115-0x0000000010000000-0x0000000010019000-memory.dmp
          Filesize

          100KB

        • memory/2508-112-0x0000000010000000-0x0000000010019000-memory.dmp
          Filesize

          100KB

        • memory/2508-111-0x0000000010000000-0x0000000010019000-memory.dmp
          Filesize

          100KB

        • memory/2508-73-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-72-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-14-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-44-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-45-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-47-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-49-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-35-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-15-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-30-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
          Filesize

          4KB

        • memory/2508-26-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-24-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-36-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-16-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2508-18-0x0000000000400000-0x0000000000482000-memory.dmp
          Filesize

          520KB

        • memory/2592-40-0x0000000072E50000-0x00000000733FB000-memory.dmp
          Filesize

          5.7MB

        • memory/2592-41-0x0000000002480000-0x00000000024C0000-memory.dmp
          Filesize

          256KB

        • memory/2592-43-0x0000000072E50000-0x00000000733FB000-memory.dmp
          Filesize

          5.7MB

        • memory/2592-42-0x0000000002480000-0x00000000024C0000-memory.dmp
          Filesize

          256KB

        • memory/2592-38-0x0000000072E50000-0x00000000733FB000-memory.dmp
          Filesize

          5.7MB

        • memory/2592-39-0x0000000072E50000-0x00000000733FB000-memory.dmp
          Filesize

          5.7MB

        • memory/2884-7-0x0000000005300000-0x00000000053C0000-memory.dmp
          Filesize

          768KB

        • memory/2884-6-0x00000000004F0000-0x00000000004FC000-memory.dmp
          Filesize

          48KB

        • memory/2884-31-0x0000000074010000-0x00000000746FE000-memory.dmp
          Filesize

          6.9MB

        • memory/2884-4-0x00000000004A0000-0x00000000004B2000-memory.dmp
          Filesize

          72KB

        • memory/2884-3-0x0000000005220000-0x00000000052FE000-memory.dmp
          Filesize

          888KB

        • memory/2884-2-0x0000000004C40000-0x0000000004C80000-memory.dmp
          Filesize

          256KB

        • memory/2884-0-0x00000000009F0000-0x0000000000AEA000-memory.dmp
          Filesize

          1000KB

        • memory/2884-13-0x0000000074010000-0x00000000746FE000-memory.dmp
          Filesize

          6.9MB

        • memory/2884-1-0x0000000074010000-0x00000000746FE000-memory.dmp
          Filesize

          6.9MB

        • memory/2884-5-0x00000000004E0000-0x00000000004E8000-memory.dmp
          Filesize

          32KB