More Data Exfiltration
Yesterday, I posted a quick analysis of a malicious document that exfiltrates data from the compromised computer[1]. Here is another found that also exfiltrate data. The malware is delivered in an ACE archive. This file format remains common in phishing campaigns because the detection rate is lower at email gateways (many of them can’t handle the file format). The archive contains a PE file called ‘Payment Copy.exe’ (SHA256:88a6e2fd417d145b55125338b9f53ed3e16a6b27fae9a3042e187b5aa15d27aa). The payload is unknown on VT at this time.
The list of searched files and registry keys is interesting. Many credentials databases and files are tested by the malware. Here is a list of extracted paths:
%USERPROFILE%\AppData\Local\Google\Chrome\User Data\LOGIN DATA %USERPROFILE%\AppData\Roaming\Mozilla\Firefox\Profiles\4lddcdcq.hh3fwg7c.default\LOGINS.JSON %USERPROFILE%\AppData\Local\TENCENT\QQBROWSER\USER DATA\DEFAULT\ENCRYPTEDSTORAGE %USERPROFILE%\AppData\Roaming\OPERA SOFTWARE\OPERA STABLE\LOGIN DATA %USERPROFILE%\AppData\Local\YANDEX\YANDEXBROWSER\USER DATA %USERPROFILE%\AppData\Local\360CHROME\CHROME\USER DATA %USERPROFILE%\AppData\Local\IRIDIUM\USER DATA %USERPROFILE%\AppData\Local\COMODO\DRAGON\USER DATA %USERPROFILE%\AppData\Local\MAPLESTUDIO\CHROMEPLUS\USER DATA %USERPROFILE%\AppData\Local\CHROMIUM\USER DATA %USERPROFILE%\AppData\Local\TORCH\USER DATA %USERPROFILE%\AppData\Local\7STAR\7STAR\USER DATA %USERPROFILE%\AppData\Local\AMIGO\USER DATA %USERPROFILE%\AppData\Local\BRAVESOFTWARE\BRAVE-BROWSER\USER DATA %USERPROFILE%\AppData\Local\CENTBROWSER\USER DATA %USERPROFILE%\AppData\Local\CHEDOT\USER DATA %USERPROFILE%\AppData\Local\COCCOC\BROWSER\USER DATA %USERPROFILE%\AppData\Local\ELEMENTS BROWSER\USER DATA %USERPROFILE%\AppData\Local\EPIC PRIVACY BROWSER\USER DATA %USERPROFILE%\AppData\Local\KOMETA\USER DATA %USERPROFILE%\AppData\Local\ORBITUM\USER DATA %USERPROFILE%\AppData\Local\SPUTNIK\SPUTNIK\USER DATA %USERPROFILE%\AppData\Local\UCOZMEDIA\URAN\USER DATA %USERPROFILE%\AppData\Local\VIVALDI\USER DATA %USERPROFILE%\AppData\Local\CATALINAGROUP\CITRIO\USER DATA %USERPROFILE%\AppData\Local\LIEBAO\USER DATA %USERPROFILE%\AppData\Local\FENRIR INC\SLEIPNIR5\SETTING\MODULES\CHROMIUMVIEWER %USERPROFILE%\AppData\Local\QIP SURF\USER DATA %USERPROFILE%\AppData\Local\COOWON\COOWON\USER DATA %USERPROFILE%\AppData\Roaming\Mozilla\SEAMONKEY\PROFILES.INI %USERPROFILE%\AppData\Roaming\FLOCK\BROWSER\PROFILES.INI %USERPROFILE%\AppData\Local\UCBROWSER %USERPROFILE%\AppData\Roaming\NETGATE TECHNOLOGIES\BLACKHAWK\PROFILES.INI %USERPROFILE%\AppData\Roaming\8PECXSTUDIOS\CYBERFOX\PROFILES.INI %USERPROFILE%\AppData\Roaming\K-MELEON\PROFILES.INI %USERPROFILE%\AppData\Roaming\Mozilla\ICECAT\PROFILES.INI %USERPROFILE%\AppData\Roaming\COMODO\ICEDRAGON\PROFILES.INI %USERPROFILE%\AppData\Roaming\MOONCHILD PRODUCTIONS\PALE MOON\PROFILES.INI %USERPROFILE%\AppData\Roaming\WATERFOX\PROFILES.INI %USERPROFILE%\AppData\Local\FALKON\PROFILES\PROFILES.INI Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676\00000002\POP3 Password %USERPROFILE%\AppData\Roaming\THUNDERBIRD\PROFILES.INI %USERPROFILE%\AppData\Local\VIRTUALSTORE\PROGRAM FILES\FOXMAIL\MAIL %USERPROFILE%\AppData\Local\VIRTUALSTORE\PROGRAM FILES (X86)\FOXMAIL\MAIL %USERPROFILE%\AppData\Roaming\OPERA MAIL\OPERA MAIL\WAND.DAT %USERPROFILE%\AppData\Roaming\POCOMAIL\ACCOUNTS.INI %USERPROFILE%\AppData\Roaming\THE BAT! %USERPROFILE%\AppData\Roaming\POSTBOX\PROFILES.INI %USERPROFILE%\AppData\Roaming\CLAWS-MAIL %USERPROFILE%\AppData\Roaming\CLAWS-MAIL\CLAWSRC %USERPROFILE%\AppData\Local\Temp\FOLDER.LST %USERPROFILE%\AppData\Roaming\TRILLIAN\USERS\GLOBAL\ACCOUNTS.DAT %USERPROFILE%\AppData\Roaming\PSI\PROFILES %USERPROFILE%\AppData\Roaming\PSI+\PROFILES %USERPROFILE%\AppData\Roaming\IPSWITCH\WS_FTP\SITES\WS_FTP.INI %USERPROFILE%\AppData\Roaming\COREFTP\SITES.IDX C:\FTP NAVIGATOR\FTPLIST.TXT %USERPROFILE%\AppData\Roaming\FLASHFXP\3QUICK.DAT %USERPROFILE%\AppData\Roaming\SMARTFTP\CLIENT 2.0\FAVORITES\QUICK CONNECT C:\CFTP\FTPLIST.TXT %USERPROFILE%\AppData\Roaming\FTPGETTER\SERVERS.XML C:\Program Files (x86)\JDOWNLOADER\CONFIG\DATABASE.SCRIPT %USERPROFILE%\AppData\Local\Temp\LOG.TMP \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\Aerofox\FoxmailPreview \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\Aerofox\Foxmail\V3.1 \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\IncrediMail\Identities \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\Qualcomm\Eudora\CommandLine \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\RimArts\B2\Settings \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\OpenVPN-GUI\configs \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\FTPWare\COREFTP\Sites \REGISTRY\USER\S-1-5-21-2529703413-2662079939-3113469119-500\Software\DownloadManager\Passwords
Who said that the browser market is restricted to IE, Firefox, Chrome, Safari & Opera?
Another tool used by the malware attracted my attention: ‘plutil.exe’. It’s a tool that is part of the Apple Application Support 32-bit program. This tool is completely legit and is available when you install an Apple software on your Windows system (Safari, iCloud, …). Its purpose is to process Properly List files[2] used by Apple.
C:\Program Files (x86)\Common Files\Apple\Apple Application Support\plutil.exe -convert xml1 -s -o \ “%USERPROFILE%\AppData\Local\Temp\fixed_keychain.xml” \ “%USERPROFILE%\AppData\Roaming\Apple Computer\Preferences\keychain.plist”
It could be a good idea to track access to these paths by uncommon process names (example via a Sysmon specific configuration)
[1] https://isc.sans.edu/forums/diary/Quick+Analyzis+of+another+Maldoc/25694/
[2] https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/AboutInformationPropertyListFiles.html
Xavier Mertens (@xme)
Senior ISC Handler - Freelance Cyber Security Consultant
PGP Key
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.
<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
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Anonymous
Dec 26th 2022
9 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
9 months ago
Anonymous
Dec 26th 2022
9 months ago
https://defineprogramming.com/
Dec 26th 2022
9 months ago
distribute malware. Even if the URL listed on the ad shows a legitimate website, subsequent ad traffic can easily lead to a fake page. Different types of malware are distributed in this manner. I've seen IcedID (Bokbot), Gozi/ISFB, and various information stealers distributed through fake software websites that were provided through Google ad traffic. I submitted malicious files from this example to VirusTotal and found a low rate of detection, with some files not showing as malware at all. Additionally, domains associated with this infection frequently change. That might make it hard to detect.
https://clickercounter.org/
https://defineprogramming.com/
Dec 26th 2022
9 months ago
rthrth
Jan 2nd 2023
8 months ago