Analysis

  • max time kernel
    153s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2022 09:46

General

  • Target

    591f8f7f1f6fd6a7f723bdc73253fcae.exe

  • Size

    2.3MB

  • MD5

    591f8f7f1f6fd6a7f723bdc73253fcae

  • SHA1

    368fe6569d723c0b54a63a0c308cd648f35bdcc1

  • SHA256

    3b6f13caf1fff58da3a4ba290b6d7f2f4ef496517b0adc066137dc97e2ac7457

  • SHA512

    a474d88a3139ea5205f6a02a5a91780da8c4ec27d6f287f72feae0dd5e486989a1b73fad58d4f1364c6dc244ff2ca2801bcd459ee5042a9ea080cec50334ae0c

  • SSDEEP

    49152:XHmN3mosk90948L+g+ok5tAQXhcqb8pdEDzyjHr2IvMAzlTu2Qidl5pBax:XHw3XsL+g+zAQfZiLtvMAzJuepBa

Malware Config

Extracted

Family

remcos

Botnet

mercy

C2

mazhararyousaf.ddns.net:52046

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-C3LYJ6

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • NirSoft MailPassView 4 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 4 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • 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 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
    "C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA3AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4824
    • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
      C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
      2⤵
        PID:1368
      • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
        C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
        2⤵
          PID:2616
        • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
          C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
          2⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1520
          • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
            C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\zyfvbrnt"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4696
          • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
            C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\kakockymwepv"
            3⤵
              PID:3576
            • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
              C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\kakockymwepv"
              3⤵
              • Accesses Microsoft Outlook accounts
              PID:4312
            • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
              C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\muxgcciosmhajja"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3960
            • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
              C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\gjlyzbdagiluvkfjbczdvwfpsumkityfjd"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:3364
            • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
              C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\rmyiztn"
              3⤵
              • Accesses Microsoft Outlook accounts
              PID:3692
            • C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe
              C:\Users\Admin\AppData\Local\Temp\591f8f7f1f6fd6a7f723bdc73253fcae.exe /stext "C:\Users\Admin\AppData\Local\Temp\bgebamyviy"
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3700

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Collection

        Data from Local System

        1
        T1005

        Email Collection

        1
        T1114

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          4KB

          MD5

          07c14121728256ad56b1ef039a28e4a6

          SHA1

          0f39e1e02cd5e2b1b22d9e5470757ae13fe96738

          SHA256

          8d46702077d776b04085cbe5ce2f0e5971595ea4e11b025a215c4379e7fc18f8

          SHA512

          03d9113095e7b6143c4f99b131462fa451a9c2d7e841461603dace64bd6d525cb63d074384d2b3ff285a7183116f1715138beeb756fced9a6b1ad6fde36d4789

        • memory/1368-144-0x0000000000000000-mapping.dmp
        • memory/1520-151-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1520-150-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1520-149-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1520-148-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1520-147-0x0000000000400000-0x000000000047F000-memory.dmp
          Filesize

          508KB

        • memory/1520-146-0x0000000000000000-mapping.dmp
        • memory/2616-145-0x0000000000000000-mapping.dmp
        • memory/3364-159-0x0000000000000000-mapping.dmp
        • memory/3364-167-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/3364-164-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/3404-132-0x0000000000470000-0x00000000006CC000-memory.dmp
          Filesize

          2.4MB

        • memory/3404-133-0x0000000005920000-0x0000000005EC4000-memory.dmp
          Filesize

          5.6MB

        • memory/3404-135-0x0000000005420000-0x0000000005442000-memory.dmp
          Filesize

          136KB

        • memory/3404-134-0x0000000005480000-0x0000000005512000-memory.dmp
          Filesize

          584KB

        • memory/3576-153-0x0000000000000000-mapping.dmp
        • memory/3692-165-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3692-163-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3692-160-0x0000000000000000-mapping.dmp
        • memory/3700-162-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/3700-161-0x0000000000000000-mapping.dmp
        • memory/3960-156-0x0000000000400000-0x0000000000424000-memory.dmp
          Filesize

          144KB

        • memory/3960-155-0x0000000000000000-mapping.dmp
        • memory/4312-166-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/4312-158-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/4312-154-0x0000000000000000-mapping.dmp
        • memory/4696-168-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/4696-157-0x0000000000400000-0x0000000000478000-memory.dmp
          Filesize

          480KB

        • memory/4696-152-0x0000000000000000-mapping.dmp
        • memory/4824-136-0x0000000000000000-mapping.dmp
        • memory/4824-138-0x00000000052A0000-0x00000000058C8000-memory.dmp
          Filesize

          6.2MB

        • memory/4824-139-0x00000000059D0000-0x0000000005A36000-memory.dmp
          Filesize

          408KB

        • memory/4824-137-0x0000000004B90000-0x0000000004BC6000-memory.dmp
          Filesize

          216KB

        • memory/4824-140-0x0000000005B30000-0x0000000005B96000-memory.dmp
          Filesize

          408KB

        • memory/4824-141-0x0000000006160000-0x000000000617E000-memory.dmp
          Filesize

          120KB

        • memory/4824-142-0x0000000007840000-0x0000000007EBA000-memory.dmp
          Filesize

          6.5MB

        • memory/4824-143-0x00000000066F0000-0x000000000670A000-memory.dmp
          Filesize

          104KB