Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/09/2022, 04:12

General

  • Target
    SecuriteInfo.com.Win32.RATX-gen.19218.exe
  • Size 143KB
  • Sample220927-eshftsdehr
  • SHA256 8fcafbce9965e41f0788634133b69cd42bebc118aa2a5b8da11842b1e088ebb2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • obologs.work.gd:4044

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-F9UER6

  • 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

Extracted

Family
  • formbook

Campaign
  • hqbo

Decoy
  • mwc6l86PJPZCD9Gt0q391w==

  • h8WuFPEOFmGLG1Q=

  • 7dt6icaDMSJXNKQRxmsc

  • VCPQuBGfPDQ74U/hUBcSJRSrwF0=

  • wespuyTDPCBIysXwj4/23w==

  • qJYwD3wmybIoqYGP6GoU

  • N9H9UYIs27f3w+D5j4/23w==

  • ZDeOOF0sDqq2x+jq

  • jAZ9j/SZVUuJTK4Rxmsc

  • syg3zEQb0sUwxTTi

  • 0F23IFLzE2AL2twRDObSkE8=

  • dpC9Ta1LZLCPptrveCsXkYeT

  • Z3uaQFxP3gc89j71

  • e5i3FoJZ48LqdoGXXA==

  • KIuwBF4KZnpdVw==

  • oCqfe+J14bIwxTTi

  • ICIFWLyScNx5Ug==

  • d/sqxzgYSyaNJVU=

  • 2/UghriHtprPTURW3595e68NMJLPos4=

  • pEfdvFgCbU5jImqCXg==

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Remcos

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

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 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
  • Adds Run key to start application 2 TTPs 1 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.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.19218.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.19218.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4220
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4200
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\kgnraeqtjvgaucmaud"
          4⤵
            PID:8
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\kgnraeqtjvgaucmaud"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3152
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\uascbwjmfdyfwiieenkcx"
            4⤵
              PID:4084
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\uascbwjmfdyfwiieenkcx"
              4⤵
              • Accesses Microsoft Outlook accounts
              PID:2216
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe /stext "C:\Users\Admin\AppData\Local\Temp\fcfucptotlqshpwivyxeaggts"
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1940
            • C:\Users\Admin\AppData\Local\Temp\dwn.exe
              "C:\Users\Admin\AppData\Local\Temp\dwn.exe"
              4⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious use of SetThreadContext
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4324
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
                5⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3684
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
                5⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of AdjustPrivilegeToken
                PID:4128
        • C:\Windows\SysWOW64\wscript.exe
          "C:\Windows\SysWOW64\wscript.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • Modifies Internet Explorer settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2268
          • C:\Program Files\Mozilla Firefox\Firefox.exe
            "C:\Program Files\Mozilla Firefox\Firefox.exe"
            3⤵
              PID:1916

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
              • Size 1KB
              • SHA256 e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359
              • MD5 SHA1 SHA512

              ModuleAnalysisCache

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
              • Size 53KB
              • SHA256 474813b625f00710f29fa3b488235a6a22201851efb336bddf60d7d24a66bfba
              • MD5 SHA1 SHA512 SSDEEP

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 16KB
              • SHA256 e4b203abf93eb84f462e85155035763cab2eb222227fa19865ec0774df28d8d7
              • MD5 SHA1 SHA512 SSDEEP

              dwn.exe

              • Path C:\Users\Admin\AppData\Local\Temp\dwn.exe
              • Size 6KB
              • SHA256 e54e955f313ec6b801d3b3eaf9c5a3ba8538e2c010eef7f6284073a44c6124fd
              • MD5 SHA1 SHA512 SSDEEP

              dwn.exe

              • Path C:\Users\Admin\AppData\Local\Temp\dwn.exe
              • Size 6KB
              • SHA256 e54e955f313ec6b801d3b3eaf9c5a3ba8538e2c010eef7f6284073a44c6124fd
              • MD5 SHA1 SHA512 SSDEEP

              kgnraeqtjvgaucmaud

              • Path C:\Users\Admin\AppData\Local\Temp\kgnraeqtjvgaucmaud
              • Size 4KB
              • SHA256 0c9e16830ccc6495def187adde2137ac07a566e1534e5714f626dcd68d28094c
              • MD5 SHA1 SHA512 SSDEEP

              memory/956-132-0x0000000000080000-0x00000000000AA000-memory.dmp

              memory/956-133-0x0000000005A00000-0x0000000005A22000-memory.dmp

              memory/1940-153-0x0000000000400000-0x0000000000424000-memory.dmp

              memory/2216-152-0x0000000000400000-0x0000000000457000-memory.dmp

              memory/2228-180-0x0000000002BD0000-0x0000000002C93000-memory.dmp

              memory/2228-178-0x0000000002BD0000-0x0000000002C93000-memory.dmp

              memory/2228-171-0x0000000002950000-0x0000000002AE6000-memory.dmp

              memory/2268-177-0x0000000002D10000-0x0000000002D9F000-memory.dmp

              memory/2268-176-0x0000000000B60000-0x0000000000B8B000-memory.dmp

              memory/2268-175-0x0000000002EE0000-0x000000000322A000-memory.dmp

              memory/2268-174-0x0000000000650000-0x0000000000677000-memory.dmp

              memory/2268-179-0x0000000000B60000-0x0000000000B8B000-memory.dmp

              memory/3152-159-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/3152-154-0x0000000000400000-0x0000000000478000-memory.dmp

              memory/4128-169-0x0000000001A30000-0x0000000001D7A000-memory.dmp

              memory/4128-173-0x0000000000400000-0x000000000042B000-memory.dmp

              memory/4128-170-0x0000000001430000-0x0000000001440000-memory.dmp

              memory/4128-167-0x0000000000400000-0x000000000042B000-memory.dmp

              memory/4200-165-0x0000000000400000-0x000000000047F000-memory.dmp

              memory/4200-146-0x0000000000400000-0x000000000047F000-memory.dmp

              memory/4200-144-0x0000000000400000-0x000000000047F000-memory.dmp

              memory/4200-145-0x0000000000400000-0x000000000047F000-memory.dmp

              memory/4200-143-0x0000000000400000-0x000000000047F000-memory.dmp

              memory/4220-141-0x0000000006CB0000-0x0000000006CCA000-memory.dmp

              memory/4220-140-0x0000000007E70000-0x00000000084EA000-memory.dmp

              memory/4220-139-0x00000000067A0000-0x00000000067BE000-memory.dmp

              memory/4220-138-0x0000000006130000-0x0000000006196000-memory.dmp

              memory/4220-137-0x0000000005FD0000-0x0000000006036000-memory.dmp

              memory/4220-136-0x00000000058A0000-0x0000000005EC8000-memory.dmp

              memory/4220-135-0x0000000005230000-0x0000000005266000-memory.dmp

              memory/4324-158-0x0000000000270000-0x0000000000278000-memory.dmp