Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2023 01:51

General

  • Target

    00000078afd5c2441b0a4ca628c1b7bcc961a68f2b779d281af6d2af405b5f1a.exe

  • Size

    152KB

  • MD5

    d041c6e0156b87978a54ab6a49f66593

  • SHA1

    0a6d717d33329bbc794ac3d608d197e276654228

  • SHA256

    00000078afd5c2441b0a4ca628c1b7bcc961a68f2b779d281af6d2af405b5f1a

  • SHA512

    44544d301be9e15363e626a75898a955a2bfab7d001703631232a7d28d11cbec2f57b7ceb94c1400092a00e874864f4be52ce218dbba000275b4fcf9cde82df2

  • SSDEEP

    3072:H3sVvl3Po5+tTjFqV+t3DRGCKBiAKN4oQZiEx0:SQ5+t8+NDR5AWWs

Score
10/10

Malware Config

Signatures

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

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 55 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\00000078afd5c2441b0a4ca628c1b7bcc961a68f2b779d281af6d2af405b5f1a.exe
    "C:\Users\Admin\AppData\Local\Temp\00000078afd5c2441b0a4ca628c1b7bcc961a68f2b779d281af6d2af405b5f1a.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:2524
    • C:\Users\Admin\ysqoeh.exe
      "C:\Users\Admin\ysqoeh.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:3640

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\ysqoeh.exe

    Filesize

    152KB

    MD5

    433e059ab1ccbbc722d05ca19b791cec

    SHA1

    b6282173324e0b882f1d199016788f2679251fa1

    SHA256

    5cdebb35c195bf3cb93b37defdd5874df17b5f2a1b29949a189430c49a93e561

    SHA512

    38b56c3b71c25ec7f03d27386a5fadf5d8f46dff5852982ec475cecd632c24ea63685602a924014ade380a6897e0c81e2e0e3c1a8f0a9562466e884c9b34ede2

  • C:\Users\Admin\ysqoeh.exe

    Filesize

    152KB

    MD5

    433e059ab1ccbbc722d05ca19b791cec

    SHA1

    b6282173324e0b882f1d199016788f2679251fa1

    SHA256

    5cdebb35c195bf3cb93b37defdd5874df17b5f2a1b29949a189430c49a93e561

    SHA512

    38b56c3b71c25ec7f03d27386a5fadf5d8f46dff5852982ec475cecd632c24ea63685602a924014ade380a6897e0c81e2e0e3c1a8f0a9562466e884c9b34ede2

  • C:\Users\Admin\ysqoeh.exe

    Filesize

    152KB

    MD5

    433e059ab1ccbbc722d05ca19b791cec

    SHA1

    b6282173324e0b882f1d199016788f2679251fa1

    SHA256

    5cdebb35c195bf3cb93b37defdd5874df17b5f2a1b29949a189430c49a93e561

    SHA512

    38b56c3b71c25ec7f03d27386a5fadf5d8f46dff5852982ec475cecd632c24ea63685602a924014ade380a6897e0c81e2e0e3c1a8f0a9562466e884c9b34ede2