Flagpro is used in the initial stage of attacks to investigate target’s environment, download a second stage malware and execute it.
An attack case using Flagpro starts with a spear phishing e-mail.
The message is adjusted to its target organization.
It is disguised as an e-mail communication with target’s business partner.
This means the attackers probed deeper into their target before attacking.
The attackers attach a password protected archived file (ZIP or RAR) to the email, and they write its password in the message.
The archived file includes an xlsm format file and it contains a malicious macro.
If a user activates the macro, a malware will be dropped. They also adjust the contents of the xlsm file to the target.
Therefore, it is not easy to feel at odds with the file sent by the attacker.
After the macro is executed, it creates an EXE file in startup directory.
This EXE file is “Flagpro”.
In the most cases, this created EXE files are named “dwm.exe”.
When the system launches next time, Flagpro, which was placed in startup directory as “dwm.exe”, will be executed.
Flagpro communicates with a C&C server, and it receives commands to execute from the server, or Flagpro downloads a second stage malware and then executes it.
The attackers check the target’s environment whether it is suitable for running the second stage malware or not.
If they determine to attack the target, another malware sample will be downloaded and executed.
Sign Up For Threat Alerts
Jul 04, 2023
Rhysida Ransomware RaaS Crawls Out of Crimeware...
The Rhysida ransomware-as-a-service (RaaS) group has gone from a dubious newcomer to a fully-fledged ransomware...
Jun 26, 2023
Operation Magalenha – Long-Running Campaign Pursues Portuguese...
The attackers can steal credentials and exfiltrate users' data and personal information, which can be...
Apr 24, 2023
Lazarus Group Adds Linux Malware to Arsenal...
Researchers have discovered a new campaign conducted by Lazarus, known as "Operation DreamJob," which targets...
Apr 23, 2023
Additional IOCs for 3cx breach
Recently an unexpected malicious activity emanating from a legitimate, signed binary, 3CXDesktopApp was observed.
Apr 23, 2023
Ex-Conti and FIN7 Actors Collaborate with New...
IBM Security X-Force recently discovered a new malware family Analysts have called "Domino," which Analysts...
Apr 20, 2023
AuKill EDR killer malware abuses Process Explorer...
The AuKill tool abuses an outdated version of the driver used by version 16.32 of...
Apr 20, 2023
Fake Chrome updates spread malware
A campaign running since the end of last year is using hacked sites to push...
Apr 20, 2023
QBot using new attack vector in its...
QBot, also known as QakBot, previously operated as a banking trojan and has since transformed...
Apr 20, 2023
CrossLock Ransomware Emerges: New Golang – Based...
The CrossLock ransomware employs the double extortion technique to increase the likelihood of payment from...
Apr 20, 2023
Windows Zero-Day Vulnerability CVE-2023-28252 Exploited by Nokoyawa...
A zero-day vulnerability in the Microsoft Windows system, which also affects Windows 11, has been...
Apr 18, 2023
Additional IOcs for 3cx breach
Recently an unexpected malicious activity emanating from a legitimate, signed binary, 3CXDesktopApp was observed. As...
Apr 18, 2023
Additional IOcs for 3cx breach
Recently an unexpected malicious activity emanating from a legitimate, signed binary, 3CXDesktopApp was observed. As...
Apr 18, 2023
APT36 Expands Interest Within Indian Education Sector
Symantec described UPS in 2016 report as Buckeye (also known as APT3 Gothic Panda UPS...
Apr 17, 2023
ChinaZ DDoS Bot Malware Distributed To Linux...
The ChinaZ DDoS bot malware was discovered targeting Linux systems while a version for Microsoft...
Apr 16, 2023
Resurgence Of The Mexals Cryptojacking Campaign
The Mexals crypto jacking campaign has been in operation since at least 2021 and continues...