Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    30-08-2024 04:31

General

  • Target

    a3a1178a681a45c960b0ed5d0c47926b.exe

  • Size

    1.0MB

  • MD5

    a3a1178a681a45c960b0ed5d0c47926b

  • SHA1

    9048f61cab453a6d4eb6ebae1bd2f913350975d9

  • SHA256

    f0f335a424d98a48836a01aaa8af90ddaa08667ad3fedc6cea38ab5623c4b713

  • SHA512

    974b0726a47312b9ecf429d4ba7716e196448655e24775f9443c5cc5b5a3fb790ef917baf30dc0da4907c9298ddff10fd411b806103a261dcc926c0f008ce0e3

  • SSDEEP

    24576:78+0suO3PuzmSe//zGdg7Vbo11Im2YJAssiWV9w9pTNLo:juO/uzmN/CdSmfUqPx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.106.127.79:5679

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-7VNLX4

  • 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 3 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 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 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
    "C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:560
    • 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\a3a1178a681a45c960b0ed5d0c47926b.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2880
    • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
      "C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2776
      • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
        C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
        3⤵
          PID:2052
        • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
          C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
          3⤵
            PID:2132
          • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
            C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
            3⤵
              PID:2392
            • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
              C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
              3⤵
                PID:1724
              • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
                3⤵
                  PID:1668
                • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                  C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
                  3⤵
                    PID:2376
                  • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                    C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\ysckpuluinebulpeho"
                    3⤵
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2404
                  • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                    C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\inicqmvoevwowzliqzloc"
                    3⤵
                      PID:1920
                    • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                      C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\inicqmvoevwowzliqzloc"
                      3⤵
                        PID:2560
                      • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                        C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\inicqmvoevwowzliqzloc"
                        3⤵
                        • Accesses Microsoft Outlook accounts
                        • System Location Discovery: System Language Discovery
                        PID:2908
                      • C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe
                        C:\Users\Admin\AppData\Local\Temp\a3a1178a681a45c960b0ed5d0c47926b.exe /stext "C:\Users\Admin\AppData\Local\Temp\thvvqfgpsdothfzmhkxqfujwf"
                        3⤵
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2992

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

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

                    Filesize

                    2B

                    MD5

                    f3b25701fe362ec84616a93a45ce9998

                    SHA1

                    d62636d8caec13f04e28442a0a6fa1afeb024bbb

                    SHA256

                    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                    SHA512

                    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                  • memory/560-0-0x000000007477E000-0x000000007477F000-memory.dmp

                    Filesize

                    4KB

                  • memory/560-1-0x0000000000090000-0x000000000019C000-memory.dmp

                    Filesize

                    1.0MB

                  • memory/560-2-0x0000000074770000-0x0000000074E5E000-memory.dmp

                    Filesize

                    6.9MB

                  • memory/560-3-0x00000000004E0000-0x00000000004F8000-memory.dmp

                    Filesize

                    96KB

                  • memory/560-4-0x000000007477E000-0x000000007477F000-memory.dmp

                    Filesize

                    4KB

                  • memory/560-5-0x0000000074770000-0x0000000074E5E000-memory.dmp

                    Filesize

                    6.9MB

                  • memory/560-6-0x0000000004A60000-0x0000000004B20000-memory.dmp

                    Filesize

                    768KB

                  • memory/560-27-0x0000000074770000-0x0000000074E5E000-memory.dmp

                    Filesize

                    6.9MB

                  • memory/2404-40-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/2404-39-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/2404-41-0x0000000000400000-0x0000000000478000-memory.dmp

                    Filesize

                    480KB

                  • memory/2776-35-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-61-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-16-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-14-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-12-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-10-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-9-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-8-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-7-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-29-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-28-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-30-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-31-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                    Filesize

                    4KB

                  • memory/2776-24-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-72-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-71-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-70-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-69-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-68-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-25-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-26-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-67-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-22-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-55-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2776-58-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2776-59-0x0000000010000000-0x0000000010019000-memory.dmp

                    Filesize

                    100KB

                  • memory/2776-60-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-18-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-62-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-64-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-63-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-65-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2776-66-0x0000000000400000-0x0000000000482000-memory.dmp

                    Filesize

                    520KB

                  • memory/2908-49-0x0000000000400000-0x0000000000462000-memory.dmp

                    Filesize

                    392KB

                  • memory/2908-47-0x0000000000400000-0x0000000000462000-memory.dmp

                    Filesize

                    392KB

                  • memory/2908-43-0x0000000000400000-0x0000000000462000-memory.dmp

                    Filesize

                    392KB

                  • memory/2992-45-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2992-46-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2992-48-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB