Analysis

  • max time kernel
    120s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2024, 18:42

General

  • Target

    de5a463ab460f8d517a678001b0532dfe1a9f40bf0de2a5c77d4631cb08b6304N.exe

  • Size

    60KB

  • MD5

    cf254bd70e12a2268931fff43de470e0

  • SHA1

    811c8dd65ec4f0d45a0d334a6dac1f9de4a3b634

  • SHA256

    de5a463ab460f8d517a678001b0532dfe1a9f40bf0de2a5c77d4631cb08b6304

  • SHA512

    7a173a8a7cf414ba28edb64fa8d88608e4dd39eca47caed3d378f04e49ee839aa7693be0c09c76a407758dc835a2cffdb7f7b9da5a88e032c24000d862132886

  • SSDEEP

    1536:ysSH2LffjwHIG571Zpw25L0zF/w12T30S5z4+:gkffMHdZpw2dO/w12Tk3+

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\de5a463ab460f8d517a678001b0532dfe1a9f40bf0de2a5c77d4631cb08b6304N.exe
    "C:\Users\Admin\AppData\Local\Temp\de5a463ab460f8d517a678001b0532dfe1a9f40bf0de2a5c77d4631cb08b6304N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\youbo.exe
      "C:\Users\Admin\youbo.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\youbo.exe

    Filesize

    60KB

    MD5

    ad13a4a2bf19cb9356a8a7e56d36a345

    SHA1

    30ccb86d3532b8324f53ed1a4921af0f3d6e768b

    SHA256

    c59b33d1ff14fc665f36455e1f8f14a89b032b712b121d5e1622b416caf7bfd0

    SHA512

    b8dd5350258b5875d951023cbb69455fa32229de70712609f28f8a28281206e5e337278ae80e956e9d1c3761cda85e5f8dfca802eeb79dec2d24031bc7b93e43