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

  • 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.

  • 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

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    471B

    MD5

    af328f997c1fd654a97d9cd9313518ae

    SHA1

    64dc24457d09fc45ce70100d951ea95ef46769de

    SHA256

    50283072cd484bed2f7889a6b216638697b93b0a007339556f882a3b5777a288

    SHA512

    f58fef62cfebc1b95e875ff15712615ef72de3856333d5f2b6f18f6ca027db7508c59e7c5734e280869c2dd60459def03e73989e83df4ab101c2e686913fca49

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    434B

    MD5

    952bcbd7cba3e2990b741adad4681350

    SHA1

    b01954381fe73de2d4366dadb5e04bcdb90af719

    SHA256

    0e27d3ea7a7e820a013e7ee98b2b57518132222caf97cdea1344e850401351e9

    SHA512

    20dc67e955fe42a02d5da28a09f579f393490658609435776bac7f5ab3cba5d47b62d8a87b521c1602f716f82e909c21cf8651878f547d784e0b5fb919dc5462

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

    Filesize

    4KB

    MD5

    597cfcf680926c8eb29ae648856d9320

    SHA1

    938e427edd6c31cdabd4876623f142b941ca3a56

    SHA256

    92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c

    SHA512

    05d716444124c6a2648329a81a53216aaadd7d089ef0d9d82a83de86b8cfb379a74ae0a59d1994b263727617081133ec89294c04d966cbd16bf714a8ee83a8cb

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

    Filesize

    4KB

    MD5

    597cfcf680926c8eb29ae648856d9320

    SHA1

    938e427edd6c31cdabd4876623f142b941ca3a56

    SHA256

    92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c

    SHA512

    05d716444124c6a2648329a81a53216aaadd7d089ef0d9d82a83de86b8cfb379a74ae0a59d1994b263727617081133ec89294c04d966cbd16bf714a8ee83a8cb

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

    Filesize

    4KB

    MD5

    597cfcf680926c8eb29ae648856d9320

    SHA1

    938e427edd6c31cdabd4876623f142b941ca3a56

    SHA256

    92ce65fc540bae06da243f6e146e159feb4787565c1c352bea4dd3efc891274c

    SHA512

    05d716444124c6a2648329a81a53216aaadd7d089ef0d9d82a83de86b8cfb379a74ae0a59d1994b263727617081133ec89294c04d966cbd16bf714a8ee83a8cb

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

    Filesize

    5.7MB

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

    Filesize

    64KB

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

    Filesize

    88KB

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

    Filesize

    104KB

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

    Filesize

    5.7MB

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

    Filesize

    88KB