Analysis

  • max time kernel
    136s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    04-11-2020 03:03

General

  • Target

    70d06bd4e6a91b60bc8515e327fa1f9fb7ac82125e3c8a06359b5bb3f96e48f3.exe

  • Size

    594KB

  • MD5

    cf92bea857aea977023ad61ec6b6c980

  • SHA1

    3bd8631ef9a7cab613af223e33734e8f2a4bc0bb

  • SHA256

    70d06bd4e6a91b60bc8515e327fa1f9fb7ac82125e3c8a06359b5bb3f96e48f3

  • SHA512

    1e249b79a244d6d1877592607628efc79977a44d22f4a79b137e99f7d5e44cfd2fd235d5eaba5f6bddea5962e07455ee22fda284dec02b3be0ca1a76098dcba8

Malware Config

Signatures

  • Locky

    Ransomware strain released in 2016, with advanced features like anti-analysis.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Deletes itself 1 IoCs
  • Modifies service 2 TTPs 6 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Control Panel 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70d06bd4e6a91b60bc8515e327fa1f9fb7ac82125e3c8a06359b5bb3f96e48f3.exe
    "C:\Users\Admin\AppData\Local\Temp\70d06bd4e6a91b60bc8515e327fa1f9fb7ac82125e3c8a06359b5bb3f96e48f3.exe"
    1⤵
    • Modifies extensions of user files
    • Modifies service
    • Sets desktop wallpaper using registry
    • Enumerates system info in registry
    • Modifies Control Panel
    • Suspicious use of WriteProcessMemory
    PID:1004
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\ykcol.htm
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:672
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:672 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:956
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\70d06bd4e6a91b60bc8515e327fa1f9fb7ac82125e3c8a06359b5bb3f96e48f3.exe"
      2⤵
      • Deletes itself
      PID:1892
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:612
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {A6203F57-43CF-4B9E-B820-8FF84168B096} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
      2⤵
      • Interacts with shadow copies
      PID:1708
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1592-2-0x000007FEF7160000-0x000007FEF73DA000-memory.dmp

    Filesize

    2.5MB