Thursday, November 30, 2023

New Credential Stealer Malware Campaign Targets Hundreds of Companies Abusing Legitimate Tools

A new wave of infamous credential stealer malware “Separ” infects organizations through living off the land attack methods.

In this campaign, threat actors leverage new file hosting service and a legitimate FTP client to upload the exfiltrate and to store data.

According to DeepInstinct, the activity still continues and the data extracted are stored on a daily basis to the hosting service.

The campaign targeted a number of companies in South East Asia and the Middle East, some targets in North America. The attack targeting business organizations with fake documents appear to be for quotations, shipments, and equipment specifications.

Infection Chain – Separ

The infection starts with a phishing email that contains malicious attachments, mostly decoy PDF document, present in a self-extracting archive. the archive contains a VB Script(adobel.vbs), two batch scripts(adob01.bat, adob02.bat), and four executable files(adobepdf.exe, adobepdf2.exe, ancp.exe, and Areada.exe).

Files present in the archive appears to be related with Adobe, when the user clicks on the PDF attachment with the Email, then the VB Script will be executed.

The VB script calls batch script(adob01[.]bat) which copies several files and executes the second batch file (adob02[.]bat) that performs various malicious functions.

According to DeepInstinct analysis, it performs the following functions.

  • Opens an empty decoy jpg, which hides additional command windows.
  • Changes firewall settings.
  • Saves ipconfig /all results into a file.
  • Steals credentials.
  • Renames the extracted passwords and upload via FTP
  • Turns computer to sleep, once it runs second batch script once sleep completed

Attackers used haven’t used any obfuscation or evasion techniques and the spear uses various legitimate tools that include xcopy.exe, attrib.exe, sleep.exe (renamed Areada.exe), and ancp.exe.

Extracted details are stored in an FTP server belong to a well-known hosting provider( using an FTP client ancp.exe.

The growth in the number of victims claimed by this malware shows that simple attacks can be very effective, DeepInstinct said.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity updates also you can take the Best Cybersecurity courses online to keep your self-updated.

Also Read:

Hackers Deliver Banking Malware Through Password Protected ZIP File

Organized Cybercrime – Hacker Groups Work Together To Distribute Banking Malware Globally


Latest articles

Chrome Zero-Day Vulnerability That Exploited In The Wild

Google has fixed the sixth Chrome zero-day bug that was exploited in the wild this...

Iranian Mobile Banking Malware Steal Login Credentials & Steal OTP Codes

An Android malware campaign was previously discovered that distributed banking trojans targeting four major...

BLUFFS: Six New Attacks that Break Secrecy of Bluetooth Sessions

Six novel Bluetooth attack methods have been discovered, which were named BLUFFS (Bluetooth Forward...

Google Workspace’s Design Flaw Allows Attacker Unauthorized Access

Recent years saw a surge in cloud tech adoption, highlighting the efficiency through tools...

Serial ‘SIM Swapper’ Sentenced to Eight Years in Prison

In a digital age marred by deceit, 25-year-old Amir Hossein Golshan stands as a...

Design Flaw in Domain-Wide Delegation Could Leave Google Workspace Vulnerable to Takeover – Hunters

BOSTON, MASS. and TEL AVIV, ISRAEL, November 28, 2023 - A severe design flaw...

Hackers Behind High-Profile Ransomware Attacks on 71 Countries Arrested

Hackers launched ransomware attacks to extort money from the following two entities by encrypting...

API Attack Simulation Webinar

Live API Attack Simulation

In the upcoming webinar, Karthik Krishnamoorthy, CTO and Vivek Gopalan, VP of Products at Indusface demonstrate how APIs could be hacked.The session will cover:an exploit of OWASP API Top 10 vulnerability, a brute force account take-over (ATO) attack on API, a DDoS attack on an API, how a WAAP could bolster security over an API gateway

Related Articles