Analysis

  • max time kernel
    50s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    30/08/2021, 03:02

General

  • Target
    b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe
  • Size 341KB
  • Sample210830-ejax1we21e
  • SHA256 b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa4a164b7328ed9a3153a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • 6e76410dbdf2085ebcf2777560bd8cb0790329c9

Attributes
  • url4cnc

    https://telete.in/bibiOutriggr1

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 15 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

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

  • 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.

  • Delays execution with timeout.exe 2 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe
    "C:\Users\Admin\AppData\Local\Temp\b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\8958433323.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:632
      • C:\Users\Admin\AppData\Local\Temp\8958433323.exe
        "C:\Users\Admin\AppData\Local\Temp\8958433323.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious use of WriteProcessMemory
        PID:1740
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\8958433323.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1636
          • C:\Windows\SysWOW64\timeout.exe
            timeout /T 10 /NOBREAK
            5⤵
            • Delays execution with timeout.exe
            PID:1100
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\7300244442.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:916
      • C:\Users\Admin\AppData\Local\Temp\7300244442.exe
        "C:\Users\Admin\AppData\Local\Temp\7300244442.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1892
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im 7300244442.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\7300244442.exe" & del C:\ProgramData\*.dll & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:696
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im 7300244442.exe /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:988
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 6
            5⤵
            • Delays execution with timeout.exe
            PID:2032
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe" & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:684
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "b185909f484fb9247ee23e1ca9bc8a9914db5a8b41caa.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1992

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1740-70-0x0000000000400000-0x0000000001DC8000-memory.dmp

        memory/1740-69-0x00000000002C0000-0x000000000034F000-memory.dmp

        memory/1892-90-0x0000000000400000-0x0000000001DF4000-memory.dmp

        memory/1892-89-0x0000000001E00000-0x0000000001ED3000-memory.dmp

        memory/2044-59-0x0000000075D11000-0x0000000075D13000-memory.dmp

        memory/2044-61-0x0000000000400000-0x0000000001DA2000-memory.dmp

        memory/2044-60-0x00000000002B0000-0x00000000002FA000-memory.dmp