Analysis

  • max time kernel
    137s
  • max time network
    112s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    15/07/2020, 12:38

General

  • Target
    2222.exe
  • Size 971KB
  • Sample200715-jsmhearnc6
  • SHA256 a75040c1f0f11bf9629774525960c9cf35153727e1191057b575fb3c1ed0700a
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Checks whether UAC is enabled 2 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2222.exe
    "C:\Users\Admin\AppData\Local\Temp\2222.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Users\Admin\AppData\Local\Temp\2222.exe
      "{path}"
      2⤵
        PID:1856
      • C:\Users\Admin\AppData\Local\Temp\2222.exe
        "{path}"
        2⤵
          PID:1848
        • C:\Users\Admin\AppData\Local\Temp\2222.exe
          "{path}"
          2⤵
            PID:1864
          • C:\Users\Admin\AppData\Local\Temp\2222.exe
            "{path}"
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Modifies system certificate store
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1880
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe" http://localhost:16216/
              3⤵
              • Checks whether UAC is enabled
              • Suspicious use of SetWindowsHookEx
              • Modifies Internet Explorer settings
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of WriteProcessMemory
              PID:1524
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1524 CREDAT:275457 /prefetch:2
                4⤵
                • Checks whether UAC is enabled
                • Suspicious use of SetWindowsHookEx
                • Modifies Internet Explorer settings
                PID:2020
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /C taskkill /F /PID 1880 && choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\2222.exe"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:832
              • C:\Windows\SysWOW64\taskkill.exe
                taskkill /F /PID 1880
                4⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:1868
              • C:\Windows\SysWOW64\choice.exe
                choice /C Y /N /D Y /T 3
                4⤵
                  PID:1112

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/1880-4-0x0000000000400000-0x000000000042C000-memory.dmp

                memory/1880-5-0x0000000000400000-0x000000000042C000-memory.dmp

                memory/1880-2-0x0000000000400000-0x000000000042C000-memory.dmp