To impact affected systems, the group uses ransomware. The AES and IV keys used for encrypting the files are encrypted by a public RSA key and added to the contents of the encrypted file after encryption. The private RSA key is needed to decrypt the files. The ransomware has several different run-functions, including:
a. -domain string : domain
b. -force : force blacklisted computers
c. -list string: list
d. -nomutex : force not checking mutex
e. -noransom : spread with no encryption
f. -passwordf string: password
g. -path string : path
h. -t int : thread
i. -username string: username
As a default option, Mutex by the name Globaldbdbdbdb is defined at runtime. The tool supports multiple thread actions. During encryption”, shadow copies are deleted in quiet mode using the vssadmin.exe delete shadow /all /Quiet command.
The tool uses a list of file extensions of interest to avoid harming the operational capability of the OS.
Files such as msilog, log, ldf, lock, theme, msi, sys, wpx, cpl, adv, msc, scr, key, ico, dll, hta, deskthemepack, nomedia, msu, rtp, msp, idx, ani, 386, diagcfg, bin, mod, ics, com, hlp, spl, nls, cab, diagpkg, icl, ocx, rom, prf, themepack, msstyles, icns, mpa, drv, cur, diagcab, exe, cmd, shs, and Darkbit will not be encrypted.
The tool can be run with or without arguments, and sometimes, as part of an activity, ESXCLI is used to map existing virtual systems. At the end of the process, the following command is run to turn off the machines in the list: Esxcli –formatter=csv –format-param=fields==”WorldID,DisplayName” vm process list | sed -n ‘1!p’ | grep -vi”,/vmfs,” | cut -d ‘,’ -f1| awk ‘{system(“esxcli vm process kill -t=force -w=”$1)}’
The ransomware also heavily relies on legitimate software, such as rport or tacoscript.
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...