Overview

overview

8

Static

static

5

update.exe

windows10-2004-x64

8

update.exe

windows11-ltsc_2024-x64

8

Sharing

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General

  • Target
    update.exe
  • Size 2.8MB
  • Sample260820-wxs7katang
  • SHA256 391716e313f93634901425a3c18be748c436b2e03a8038dbea2f5d35c459e9e7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
defense_evasionexecutionpersistenceupx

Malware Config

Targets

    • Target
      update.exe
    • Size 2.8MB
    • SHA256 391716e313f93634901425a3c18be748c436b2e03a8038dbea2f5d35c459e9e7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    defense_evasionexecutionpersistenceupx

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Drops file in Drivers directory

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Creates new service(s)

      persistenceexecution

    • Executes dropped EXE

    • Stops running service(s)

      defense_evasionexecution

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks