Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/09/2022, 09:35

General

  • Target
    1c061338a92329304f65622959e94715f5c0f423cde1e9257ee5c6f031476929.exe
  • Size 92KB
  • Sample220908-lkbrmsebe7
  • SHA256 1c061338a92329304f65622959e94715f5c0f423cde1e9257ee5c6f031476929
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 2 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 profiles 1 TTPs 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1c061338a92329304f65622959e94715f5c0f423cde1e9257ee5c6f031476929.exe
    "C:\Users\Admin\AppData\Local\Temp\1c061338a92329304f65622959e94715f5c0f423cde1e9257ee5c6f031476929.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\cc_checker.exe
      "C:\Users\Admin\AppData\Local\cc_checker.exe"
      2⤵
      • Modifies system executable filetype association
      • Executes dropped EXE
      • Checks computer location settings
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Users\Admin\AppData\Local\Temp\3582-490\cc_checker.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\cc_checker.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:1324
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1424
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            5⤵
              PID:4892
            • C:\Windows\SysWOW64\netsh.exe
              netsh wlan show profile
              5⤵
                PID:4512
              • C:\Windows\SysWOW64\findstr.exe
                findstr All
                5⤵
                  PID:2644
              • C:\Windows\SysWOW64\cmd.exe
                "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:3452
                • C:\Windows\SysWOW64\chcp.com
                  chcp 65001
                  5⤵
                    PID:4832
                  • C:\Windows\SysWOW64\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                      PID:2228
            • C:\Windows\system32\msiexec.exe
              C:\Windows\system32\msiexec.exe /V
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1092

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  cc_checker.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\3582-490\cc_checker.exe
                  • Size 2.2MB
                  • SHA256 92b7754587a5ec40ee6cd71c89302b5a1de6603a07d2bc166bc40a96d85313ff
                  • MD5 SHA1 SHA512 SSDEEP

                  cc_checker.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\3582-490\cc_checker.exe
                  • Size 2.2MB
                  • SHA256 92b7754587a5ec40ee6cd71c89302b5a1de6603a07d2bc166bc40a96d85313ff
                  • MD5 SHA1 SHA512 SSDEEP

                  cc_checker.exe

                  • Path C:\Users\Admin\AppData\Local\cc_checker.exe
                  • Size 2.2MB
                  • SHA256 8c8e7e7983d4d5f09fc64759330665c2641d6c0c5c774c07f1505b7c483a02b8
                  • MD5 SHA1 SHA512 SSDEEP

                  cc_checker.exe

                  • Path C:\Users\Admin\AppData\Local\cc_checker.exe
                  • Size 2.2MB
                  • SHA256 8c8e7e7983d4d5f09fc64759330665c2641d6c0c5c774c07f1505b7c483a02b8
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/1324-140-0x00000000007E0000-0x0000000000A10000-memory.dmp

                  memory/1324-153-0x0000000006D70000-0x0000000006D7A000-memory.dmp

                  memory/1324-152-0x0000000006800000-0x0000000006822000-memory.dmp

                  memory/1324-141-0x0000000005200000-0x0000000005266000-memory.dmp

                  memory/1324-144-0x0000000007110000-0x00000000071A2000-memory.dmp

                  memory/1324-145-0x0000000007760000-0x0000000007D04000-memory.dmp

                  memory/4032-132-0x00000000005F0000-0x000000000060E000-memory.dmp

                  memory/5028-142-0x0000000000400000-0x000000000042B000-memory.dmp

                  memory/5028-139-0x0000000000400000-0x000000000042B000-memory.dmp

                  memory/5028-154-0x0000000000400000-0x000000000042B000-memory.dmp