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Trojan.Siggen28.36538
Added to the Dr.Web virus database:
2024-04-26
Virus description added:
2024-04-27
Technical Information
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
adds antivirus exclusion with following registry keys:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\{4A323AD2-AFF5-4AC3-9410-E574A3204121}Machine\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions] 'exe' = ''
[HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions] 'exe' = ''
Searches for windows to
detect analytical utilities:
ClassName: 'FilemonClass', WindowName: ''
ClassName: '', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
ClassName: '', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'RegmonClass', WindowName: ''
ClassName: 'OLLYDBG', WindowName: ''
ClassName: 'GBDYLLO', WindowName: ''
ClassName: 'pediy06', WindowName: ''
Modifies file system
Creates the following files
<SYSTEM32>\grouppolicy\gpt.ini
<SYSTEM32>\grouppolicy\machine\registry.pol
%ALLUSERSPROFILE%\ntuser.pol
%HOMEPATH%\documents\simpleadobe\djkrnm1sunotwun4rl2r2ini.exe
%HOMEPATH%\documents\simpleadobe\5h4ojdxfjjmpblfqjvhizmjl.exe
%HOMEPATH%\documents\simpleadobe\ys_l113gj9jleobnkoh7_xuo.exe
%HOMEPATH%\documents\simpleadobe\7fvj0xhne19f2e_zud0ofsr5.exe
%HOMEPATH%\documents\simpleadobe\_mktu0hlio4r0jgqi_gos9sc.exe
%HOMEPATH%\documents\simpleadobe\5bivoysnoqqdjtmfwf_9i_12.exe
%HOMEPATH%\documents\simpleadobe\30u5rt93parxa2fsyg0_jun9.exe
%HOMEPATH%\documents\simpleadobe\4ozgisrgmqfyak0slcx78zdg.exe
%HOMEPATH%\documents\simpleadobe\mthzst0xsbbefmpsxanxe1c6.exe
Network activity
Connects to
'5.##.66.10':80
'x2.#.lencr.org':80
'r3.#.lencr.org':80
'x1.#.lencr.org':80
'cr#.#rlocsp.cn':80
'oc##.crlocsp.cn':80
'ch###mushki.net':443
'za####arpivo.com':443
'mo###locked.com':443
'fr##.###totalsecurity.com':443
'fr##.###totalsecurity.com':80
'tr####hicken.net':443
'mo###locked.com':80
'za####arpivo.com':80
'tr####hicken.net':80
'wi##t.com':80
'vk.com':443
'do#.##stbutters.com':443
'to#####ecutirenics.sbs':443
'to#####ecutirenics.sbs':80
'do#.##stbutters.com':80
'vk.com':80
'17#.#13.115.135':80
'19#.#33.132.139':80
'18#.#72.128.203':80
'pk#.goog':80
'db##p.com':443
'ip##fo.io':443
'ap###.ipify.org':443
'ap#.#yip.com':443
'19#.#33.132.253':50500
'ma##ind.com':80
TCP
HTTP GET requests
http://pk#.goog/gsr1/gsr1.crt
http://5.##.66.10/api/bing_release.php
http://19#.#33.132.139/banda/gidro.exe
http://17#.#13.115.135/ohhelly
http://18#.#72.128.203/dl.php
http://5.##.66.10/download/th/space.php
http://wi##t.com/forum/index.php
http://5.##.66.10/download/th/getimage12.php
http://to#####ecutirenics.sbs/rt
http://cr#.#rlocsp.cn/WoTrusDVServerCA_2.crl
http://5.##.66.10/download/123p.exe
http://5.##.66.10/download/th/retail.php
http://x1.#.lencr.org/
http://r3.#.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBRI2smg%2ByvTLU%2Fw3mjS9We3NfmzxAQUFC6zF7dYVsuuUAlA5h%2BvnYsUwsYCEgTvK0Vimy3NxVLek7cb%2F8r%2BCw%3D%3D
http://x2.#.lencr.org/
http://www.ma##ind.com/geoip/v2.1/city/me
Other
'ap#.#yip.com':443
'mo###locked.com':443
'fr##.###totalsecurity.com':443
'fr##.###totalsecurity.com':80
'tr####hicken.net':443
'mo###locked.com':80
'tr####hicken.net':80
'za####arpivo.com':443
'za####arpivo.com':80
'to#####ecutirenics.sbs':443
'vk.com':443
'do#.##stbutters.com':80
'vk.com':80
'ip##fo.io':443
'ap###.ipify.org':443
'do#.##stbutters.com':443
'19#.#33.132.253':50500
UDP
DNS ASK ap#.#yip.com
DNS ASK r3.#.lencr.org
DNS ASK x1.#.lencr.org
DNS ASK cr#.#rlocsp.cn
DNS ASK oc##.crlocsp.cn
DNS ASK ch###mushki.net
DNS ASK fr##.###totalsecurity.com
DNS ASK tr####hicken.net
DNS ASK za####arpivo.com
DNS ASK mo###locked.com
DNS ASK do#.##stbutters.com
DNS ASK vk.com
DNS ASK wi##t.com
DNS ASK to#####ecutirenics.sbs
DNS ASK pk#.goog
DNS ASK db##p.com
DNS ASK ip##fo.io
DNS ASK ap###.ipify.org
DNS ASK x2.#.lencr.org
DNS ASK ma##ind.com
Miscellaneous
Searches for the following windows
ClassName: 'Registry Monitor - Sysinternals: www.sysinternals.com' WindowName: ''
ClassName: '18467-41' WindowName: ''
Creates and executes the following
'%HOMEPATH%\documents\simpleadobe\5bivoysnoqqdjtmfwf_9i_12.exe'
Executes the following
'<SYSTEM32>\svchost.exe' -k secsvcs
'<SYSTEM32>\raserver.exe' /offerraupdate
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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