: Restrict the download of .rar , .7z , and .lnk files from external email sources or unknown web domains.
is a malicious archive associated with a sophisticated spear-phishing campaign targeting high-profile organizations . It typically contains a multi-stage loader designed to bypass traditional security defenses and deploy final payloads like information stealers or remote access trojans (RATs). Overview of the Infection Chain
Common indicators associated with files like DAHALO.rar include: DAHALO.rar
: The loader communicates with a Command and Control (C2) server to download the final stage, which is often a modular malware variant capable of: Exfiltrating browser credentials and cookies. Capturing screenshots. Logging keystrokes. Downloading further malicious modules. Technical Analysis of Components
: Once downloaded and extracted, the RAR file typically reveals a shortcut file ( .LNK ) or a heavily obfuscated script (VBScript or PowerShell) disguised as a document. : Restrict the download of
: The campaign begins with a spear-phishing email containing a link to a cloud storage service (e.g., Google Drive or Dropbox) where the DAHALO.rar file is hosted.
: The scripts inside the archive are frequently layered with Base64 encoding, XOR encryption, and junk code to hinder static analysis by antivirus engines. Overview of the Infection Chain Common indicators associated
: Often uses a double extension (e.g., Project_Specs.pdf.lnk ) and executes a hidden command that launches mshta.exe or powershell.exe to run a remote script.