Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/01/2023, 15:37

General

  • Target
    HawkEye.exe
  • Size 232KB
  • Sample230108-s2jbdadh88
  • SHA256 1dacdc296fd6ef6ba817b184cce9901901c47c01d849adfa4222bfabfed61838
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Chimera 64 IoCs

    Ransomware which infects local and network files, often distributed via Dropbox links.

  • Chimera Ransomware Loader DLL 1 IoCs

    Drops/unpacks executable file which resembles Chimera's Loader.dll.

  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 27 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.

  • Drops file in Program Files directory 64 IoCs
  • Modifies Internet Explorer settings 1 TTPs 40 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HawkEye.exe
    "C:\Users\Admin\AppData\Local\Temp\HawkEye.exe"
    1⤵
    • Chimera
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:760
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -k "C:\Users\Admin\Music\YOUR_FILES_ARE_ENCRYPTED.HTML"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2088
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2088 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:428

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 471B
        • SHA256 50283072cd484bed2f7889a6b216638697b93b0a007339556f882a3b5777a288
        • MD5 SHA1 SHA512

        7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
        • Size 434B
        • SHA256 0e27d3ea7a7e820a013e7ee98b2b57518132222caf97cdea1344e850401351e9
        • MD5 SHA1 SHA512

        YOUR_FILES_ARE_ENCRYPTED.HTML

        • Path C:\Users\Admin\Favorites\Links\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c
        • MD5 SHA1 SHA512 SSDEEP

        YOUR_FILES_ARE_ENCRYPTED.HTML

        • Path C:\Users\Admin\Favorites\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c
        • MD5 SHA1 SHA512 SSDEEP

        YOUR_FILES_ARE_ENCRYPTED.HTML

        • Path C:\Users\Admin\Music\YOUR_FILES_ARE_ENCRYPTED.HTML
        • Size 4KB
        • SHA256 92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c
        • MD5 SHA1 SHA512 SSDEEP

        memory/760-132-0x0000000074A90000-0x0000000075041000-memory.dmp

        memory/760-133-0x0000000010000000-0x0000000010010000-memory.dmp

        memory/760-137-0x0000000001524000-0x000000000153A000-memory.dmp

        memory/760-138-0x0000000001B00000-0x0000000001B1A000-memory.dmp

        memory/760-139-0x0000000074A90000-0x0000000075041000-memory.dmp

        memory/760-140-0x0000000001524000-0x000000000153A000-memory.dmp