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Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 19:11

General

  • Target

    c27558daab3cd27fbc9c9543dbf648047d6790c6bd3558e8adb0e639738e6d8c.exe

  • Size

    88KB

  • MD5

    0cac74ccf1e802cac120c822adae5078

  • SHA1

    92c878106fb06b3acb91998aafb0690ae5738850

  • SHA256

    c27558daab3cd27fbc9c9543dbf648047d6790c6bd3558e8adb0e639738e6d8c

  • SHA512

    33c8af2c13c77e5b36442af090a0789c6f7f93f680d6d7268eb6fb7ba110e11791f5dab0061f454631cfb6b630569286d3c7ffbdb6f5cb87af4ca4b64afd42ca

  • SSDEEP

    768:ZDFI+tORaaq2AOa6TnwVDZ1RO8YSEQJt1H7a8jFk+Zxqfcw1x2:TIQu7YzDZ16SEQJjZx0cw1x

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 53 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c27558daab3cd27fbc9c9543dbf648047d6790c6bd3558e8adb0e639738e6d8c.exe
    "C:\Users\Admin\AppData\Local\Temp\c27558daab3cd27fbc9c9543dbf648047d6790c6bd3558e8adb0e639738e6d8c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Users\Admin\naesiy.exe
      "C:\Users\Admin\naesiy.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4208

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\naesiy.exe

    Filesize

    88KB

    MD5

    6d828ee5081afe5fe28cca610bc0da3e

    SHA1

    bf53d67fbfcb856bf54e96185205a8bbc7b0ea5f

    SHA256

    f4f33de6384daf1d63adfdc00ef76adf167d4f60e00c093da374a77c5a352486

    SHA512

    f9ac5707062904d21135c0a3578b6bddfa4956f2734052776e3ecfa5958e73cf17eaa3b95b8632499960c4171010261142398cc479b32f6b604a9167b2d4835c

  • C:\Users\Admin\naesiy.exe

    Filesize

    88KB

    MD5

    6d828ee5081afe5fe28cca610bc0da3e

    SHA1

    bf53d67fbfcb856bf54e96185205a8bbc7b0ea5f

    SHA256

    f4f33de6384daf1d63adfdc00ef76adf167d4f60e00c093da374a77c5a352486

    SHA512

    f9ac5707062904d21135c0a3578b6bddfa4956f2734052776e3ecfa5958e73cf17eaa3b95b8632499960c4171010261142398cc479b32f6b604a9167b2d4835c