Analysis

  • max time kernel
    156s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:40

General

  • Target

    3e4f80f9ef93ebd636b98e69b35c203fe0cd61035599a6020c59ee4464dbee0b.exe

  • Size

    128KB

  • MD5

    47ecc2378958452d28a9352c143cbe9b

  • SHA1

    6a29ab216951ded1c0f10b1d242a58cfc88ab683

  • SHA256

    3e4f80f9ef93ebd636b98e69b35c203fe0cd61035599a6020c59ee4464dbee0b

  • SHA512

    b958b02a05ae1368c681c497d1bab3926278cf98f4f6d4b01aed6bf754b725f47aabee3e0538c75ab219ff00fe9290c97e71cfb33266e61233d571eab94455e4

  • SSDEEP

    1536:yYkkbuIXVHKTU097h95SFlc4IE3IezPoVtTqtFyUoHnkHUS65BciuS3mnXjw:5kkbugKTU0bLmWAojqbdBS2Tw

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 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 58 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e4f80f9ef93ebd636b98e69b35c203fe0cd61035599a6020c59ee4464dbee0b.exe
    "C:\Users\Admin\AppData\Local\Temp\3e4f80f9ef93ebd636b98e69b35c203fe0cd61035599a6020c59ee4464dbee0b.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Users\Admin\siaowej.exe
      "C:\Users\Admin\siaowej.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
      PID:1972

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\siaowej.exe

    Filesize

    128KB

    MD5

    50c2642ebbda8cd48b73b557716208b3

    SHA1

    f600b597e292962bc17d70c1beda631c9ece8746

    SHA256

    c1e56672d84c99a9a20325449978d7b1b8f6e8e461578aee68b27be75853c947

    SHA512

    d81d94dcea6af9d93ebf085a6bd5267bdb18e0b2059b7be7dd79e42591bbd7f15d6d1099b1776d2bf0d07aff1507a7392507f95b4bb2e856bb9951d28f5b6e9f

  • C:\Users\Admin\siaowej.exe

    Filesize

    128KB

    MD5

    50c2642ebbda8cd48b73b557716208b3

    SHA1

    f600b597e292962bc17d70c1beda631c9ece8746

    SHA256

    c1e56672d84c99a9a20325449978d7b1b8f6e8e461578aee68b27be75853c947

    SHA512

    d81d94dcea6af9d93ebf085a6bd5267bdb18e0b2059b7be7dd79e42591bbd7f15d6d1099b1776d2bf0d07aff1507a7392507f95b4bb2e856bb9951d28f5b6e9f

  • memory/1972-134-0x0000000000000000-mapping.dmp