Analysis

  • max time kernel
    113s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230831-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-09-2023 18:17

General

  • Target

    HawkEye.exe

  • Size

    232KB

  • MD5

    60fabd1a2509b59831876d5e2aa71a6b

  • SHA1

    8b91f3c4f721cb04cc4974fc91056f397ae78faa

  • SHA256

    1dacdc296fd6ef6ba817b184cce9901901c47c01d849adfa4222bfabfed61838

  • SHA512

    3e842a7d47b32942adb936cae13293eddf1a6b860abcfe7422d0fb73098264cc95656b5c6d9980fad1bf8b5c277cd846c26acaba1bef441582caf34eb1e5295a

  • SSDEEP

    3072:BMhIBKH7j7DzQi7y5bvl4YAbdY9KWvwn7XHMzqEOf64CEEl64HBVdGXPKD:BMh5H7j5g54YZKXoxOuEEl64HZAi

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.

  • Renames multiple (4287) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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 33 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
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -k "C:\Users\Admin\AppData\Roaming\YOUR_FILES_ARE_ENCRYPTED.HTML"
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2300
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2300 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Java\jdk1.8.0_66\jre\YOUR_FILES_ARE_ENCRYPTED.HTML

    Filesize

    4KB

    MD5

    fc623628c799efc0bfb2fc95310e3e15

    SHA1

    43e660bbc1fdbff3c96a023e1be7ef67deee5b6c

    SHA256

    7aaaa756dc8e66076a562cfbe145323b2bbbc080d8e9af177138748585777c25

    SHA512

    c7532f98907a62af8033036b484ce1c316b6357ef2946bd4cbd1b11968ab4be17298000b6b068b3a391c9fd543894926e1913dd3f27cd594b345ce3576f611e9

  • C:\Users\Admin\AppData\Roaming\YOUR_FILES_ARE_ENCRYPTED.HTML

    Filesize

    4KB

    MD5

    fc623628c799efc0bfb2fc95310e3e15

    SHA1

    43e660bbc1fdbff3c96a023e1be7ef67deee5b6c

    SHA256

    7aaaa756dc8e66076a562cfbe145323b2bbbc080d8e9af177138748585777c25

    SHA512

    c7532f98907a62af8033036b484ce1c316b6357ef2946bd4cbd1b11968ab4be17298000b6b068b3a391c9fd543894926e1913dd3f27cd594b345ce3576f611e9

  • C:\Users\Admin\Favorites\Links\YOUR_FILES_ARE_ENCRYPTED.HTML

    Filesize

    4KB

    MD5

    fc623628c799efc0bfb2fc95310e3e15

    SHA1

    43e660bbc1fdbff3c96a023e1be7ef67deee5b6c

    SHA256

    7aaaa756dc8e66076a562cfbe145323b2bbbc080d8e9af177138748585777c25

    SHA512

    c7532f98907a62af8033036b484ce1c316b6357ef2946bd4cbd1b11968ab4be17298000b6b068b3a391c9fd543894926e1913dd3f27cd594b345ce3576f611e9

  • C:\Users\Admin\Favorites\YOUR_FILES_ARE_ENCRYPTED.HTML

    Filesize

    4KB

    MD5

    fc623628c799efc0bfb2fc95310e3e15

    SHA1

    43e660bbc1fdbff3c96a023e1be7ef67deee5b6c

    SHA256

    7aaaa756dc8e66076a562cfbe145323b2bbbc080d8e9af177138748585777c25

    SHA512

    c7532f98907a62af8033036b484ce1c316b6357ef2946bd4cbd1b11968ab4be17298000b6b068b3a391c9fd543894926e1913dd3f27cd594b345ce3576f611e9

  • memory/3944-10-0x00000000054F0000-0x000000000550A000-memory.dmp

    Filesize

    104KB

  • memory/3944-9-0x00000000054F0000-0x000000000550A000-memory.dmp

    Filesize

    104KB

  • memory/3944-0-0x0000000075200000-0x00000000757B1000-memory.dmp

    Filesize

    5.7MB

  • memory/3944-8-0x0000000001080000-0x0000000001180000-memory.dmp

    Filesize

    1024KB

  • memory/3944-411-0x0000000075200000-0x00000000757B1000-memory.dmp

    Filesize

    5.7MB

  • memory/3944-662-0x0000000001080000-0x0000000001180000-memory.dmp

    Filesize

    1024KB

  • memory/3944-3-0x0000000010000000-0x0000000010010000-memory.dmp

    Filesize

    64KB

  • memory/3944-2-0x00000000016C0000-0x00000000016D0000-memory.dmp

    Filesize

    64KB

  • memory/3944-1-0x0000000075200000-0x00000000757B1000-memory.dmp

    Filesize

    5.7MB