Zyklon malware can do a lot of damage to your device

Zyklon malware can do a lot of damage to your device

Cybercriminals deliver Zyklon HTTP malware through Microsoft Office. Our cybersecurity team discovered that the cybercriminals are using new vulnerabilities present in Microsoft Office. The Zyklon malware code can be found very easily on the internet because is free.
This malware has full backdoor and keylogging features, password gathering feature; plug-ins are supported like the crypto miner or password recovery all done by using download and install function, it can also be used for DDoS attacks and can be upgraded or deleted if the cybercriminals want to cover their traces.

Infection Vector
This new type of Zyklon malware is deployed trough spam emails, emails that have a ZIP file attached containing an infected DOC file.

Multiple industries are affected by this malware:
• Telecommunications
• Insurance
• Financial Services

Sample lure docs
Vector of attack steps:
1. Email reach user’s inbox. The mail has a ZIP attachment that has the infected DOC file inside.
2. The DOC file exploits three or more vulnerabilities of Microsoft Office, using PowerShell command scripts.
3. The PowerShell script is, in fact, a download session that installs the malware from cybercriminals C&C server.

Zyklon attack methods
Infection Techniques:

CVE-2017-8759
This is a new vulnerability used by the cybercriminals to embed an OLE Object inside the DOC file, and this OLE Object is the download that installs additional files from C&C Server.

CVE-2017-11882
This is another new vuln that downloads the malware from an URL stored inside in another OLE Object when the victim opens the DOC.
HTTP GET is used to download the next level payload
The following file downloaded after the initial open of the infected DOC file is a file named doc.doc that is, in fact, an XML which contains PowerShell scrips used to download another file named Pause.ps1.
Another method of downloading the same Pause.ps1 file using PowerShell script is through Dynamic Data Exchange (DDE) that is exploited for remote code execution.

Zyklon Delivery methods:
Pause.ps1 has the same address for download in all the ways used. Pause.ps1 is just another PowerShell script that is Base64 encoded. This is used to resolve APIs required for code injection, code that is also inside this file. The injected code is a downloader for the last piece of the malware that is a PE executable compiled with the Net framework: words.exe.

After execution, the file does the following activities:
1. Duplicates itself in %AppData%\svchost.exe\svchost.exe and drops an XML file, that contains configuration information for Task Scheduler
2. Unpacks the code in memory via process hollowing. The MSIL file includes the packed core payload in its. Net resource section.
3. The unpacked code is Zyklon.

XML configuration file to schedule the task
The Zyklon malware first retrieves the external IP address of the infected machine using the following:
• API.ipify[.]org
• ip.anysrc[.]net
• myexternalip[.]com
• whatsmyip[.]com
The Zyklon also contains an encrypted file named tor which is a Tor anonymizer that is injected în InstallUtiil.exe then the attackers C&C Server is used to control Zyklon through Tor network.
Zyklon public RSA key
Command
Action
sign
Requests system information
settings
Requests settings from C2 server
logs
Uploads harvested passwords
wallet
Uploads harvested cryptocurrency wallet data
proxy
Indicates SOCKS proxy port opened
miner
Cryptocurrency miner commands
error
Reports errors to C2 server
ddos
DDoS attack commands
Zyklon accepted commands
Zyklon issuing “settings” command and subsequent server response
Zyklon issuing “sign” command and subsequent server response
Zyklon issuing “ddos” command and subsequent server response

Plugin Manager
Zyklon downloads number of plugins from its C2 server. The plugin URL is stored in file in following format:
• /plugin/index.php?plugin=
The following plugins are found in the memory of the Zyklon malware:
• /plugin/index.php?plugin=cuda
• /plugin/index.php?plugin=minerd
• /plugin/index.php?plugin=sgminer
• /plugin/index.php?plugin=socks
• /plugin/index.php?plugin=tor
• /plugin/index.php?plugin=games
• /plugin/index.php?plugin=software
• /plugin/index.php?plugin=ftp
• /plugin/index.php?plugin=email
• /plugin/index.php?plugin=browser

The downloaded plugins are injected into: Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe.
Additional Features
The Zyklon malware offers the following additional features:
Browser Password Recovery
Zyklon HTTP can recover passwords from almost every web browser:
• Google Chrome
• Mozilla Firefox
• Internet Explorer
• Opera Browser
• Chrome Canary/SXS
• CoolNovo Browser
• Apple Safari
• Flock Browser
• SeaMonkey Browser
• SRWare Iron Browser
• Comodo Dragon Browser

FTP Password Recovery
Zyklon has FTP password recovery from the following FTP applications:
• FileZilla
• SmartFTP
• FlashFXP
• FTPCommander
• Dreamweaver
• WS_FTP

Gaming Software Key Recovery
Zyklon can recover PC Gaming software keys from the following games:
• Battlefield
• Call of Duty
• FIFA
• NFS
• Age of Empires
• Quake
• The Sims
• Half-Life
• IGI
• Star Wars

Email Password Recovery
Zyklon can collect email passwords from following applications:
• Microsoft Outlook Express
• Microsoft Outlook 2002/XP/2003/2007/2010/2013
• Mozilla Thunderbird
• Windows Live Mail 2012
• IncrediMail, Foxmail v6.x – v7.x
• Windows Live Messenger
• MSN Messenger
• Google Talk
• Gmail Notifier
• PaltalkScene IM
• Pidgin (Formerly Gaim) Messenger
• Miranda Messenger
• Windows Credential Manager

License Key Recovery
The malware automatically identifies and decrypts the license/serial keys of more than 200 popular pieces of software like Office, SQL Server, Adobe, and Nero.
Socks5 Proxy
Zyklon can do a reverse Socks5 proxy server on infected host machines.
Hijack Clipboard Bitcoin Address
Zyklon can hijack the clipboard and replaces the user’s copied bitcoin address with an address served up by the actor’s control server.

Zyklon Pricing
Our cybersecurity team identified different versions of Zyklon HTTP being offered for sell on markets inside DarkWeb:
• Normal build: $75 (USD)
• Tor-enabled build: $125 (USD)
• Rebuild/Updates: $15 (USD)
• Payment Method: Bitcoin (BTC)

Conclusion
Our cybersecurity analyst says that this is a masterpiece of a malware that takes advantage of many new vulnerabilities to accomplish multiple vicious tasks. This is the reason why every user should update their OSs and applications frequently updated.

Indicators of Compromise
accounts.doc – 76011037410d031aa41e5d381909f9ce
Courier.doc – 4bae7fb819761a7ac8326baf8d8eb6ab
doc.doc – eb5fa454ab42c8aec443ba8b8c97339b
Pause.ps1 – 886a4da306e019aa0ad3a03524b02a1c
words.exe – 04077ecbdc412d6d87fc21e4b3a4d088

Network Indicators
• 154.16.93.182
• 85.214.136.179
• 178.254.21.218
• 159.203.42.107
• 217.12.223.216
• 138.201.143.186
• 216.244.85.211
• 51.15.78.0
• 213.251.226.175
• 93.95.100.202
• warnono.punkdns.top

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