hxxps://www[.]avast[.]com/en-us/index

General

Target

https://www.avast.com/en-us/index
Sample

241113-kl9vds1rcn

Score

10^/10

Malware Config

Targets

- Target
  
  https://www.avast.com/en-us/index
Score

10^/10

adware bootkit defense_evasion discovery evasion persistence phishing privilege_escalation spyware stealer trojan
- Suspicious use of NtCreateProcessExOtherParentProcess
- Boot or Logon Autostart Execution: Active Setup
  Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
  persistence
- Downloads MZ/PE file
- Drops file in Drivers directory
- Event Triggered Execution: Image File Execution Options Injection
  persistence
- Manipulates Digital Signatures
  Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
- Sets service image path in registry
  persistence
- Uses Session Manager for persistence
  Creates Session Manager registry key to run executable early in system boot.
  persistence
- A potential corporate email address has been identified in the URL: 0E920C0F53DA9E9B0A490D45@AdobeOrg
  phishing
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Event Triggered Execution: Component Object Model Hijacking
  Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
  persistence privilege_escalation
- Executes dropped EXE
- Impair Defenses: Safe Mode Boot
  defense_evasion
- Loads dropped DLL
- Modifies system executable filetype association
  persistence
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Windows security modification
  evasion trojan
- Adds Run key to start application
  persistence
- Blocklisted process makes network request
- Checks for any installed AV software in registry
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- Installs/modifies Browser Helper Object
  BHOs are DLL modules which act as plugins for Internet Explorer.
  stealer adware
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Checks system information in the registry
  System information is often read in order to detect sandboxing environments.
- Drops file in System32 directory
behavioral1