Overview

overview

10

Static

static

3

2824201eea...fN.exe

windows7-x64

10

2824201eea...fN.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 04:11

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General

  • Target

    2824201eeaa0a0c47b8672a678e079e1c69a265b70bcee54e2ad6bda80cd89afN.exe

  • Size

    252KB

  • MD5

    91783490d36d9f6811629afe74f22820

  • SHA1

    78429624cd6bfd77970e52800968bf2a75aa0464

  • SHA256

    2824201eeaa0a0c47b8672a678e079e1c69a265b70bcee54e2ad6bda80cd89af

  • SHA512

    758c81f47a88dde4b8d978a7d8fee6a20f49e7a4e8a5381d7a36f573487c25381ca15c643c4c09cf214500355f1bd4f51fad074ae5ad23495722ca4ef582f167

  • SSDEEP

    6144:xml7FNnnPbuxN8b7giqR20NGNccko5Knvmb7/D26i02maSTOarRMJ:kl7FNnjuxN8cGNccko5Knvmb7/D26i0c

Score
10/10
discoveryevasionpersistence

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
    evasion
  • 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 51 IoCs
    persistence
  • 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.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2824201eeaa0a0c47b8672a678e079e1c69a265b70bcee54e2ad6bda80cd89afN.exe
    "C:\Users\Admin\AppData\Local\Temp\2824201eeaa0a0c47b8672a678e079e1c69a265b70bcee54e2ad6bda80cd89afN.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Users\Admin\yiigut.exe
      "C:\Users\Admin\yiigut.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
      PID:4448

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\yiigut.exe
    Filesize

    252KB

    MD5

    d9057d35a0eee77362579ffe204e1b75

    SHA1

    487e638b04fda3653bf8c56351db50d0e5dbaa85

    SHA256

    d0ebd9f8c052f8b8b160ba0e3ee5f384fc23b5ac0571929ad0add17400600664

    SHA512

    1a735b24a969ec65099b6a46ece70aea46ea7db7b78b829c04209581de96a750a6eb6e1577d6a9f79ef8902b517419f4e012fdfb5410bd9dfa4c6ded5cfc7392

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