Win32.HLLM.Reset.681
Added to the Dr.Web virus database:
2017-12-11
Virus description added:
2017-12-11
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,,<LS_APPDATA>\jwaroevi\rarexsdb.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'RarExsdb' = '<LS_APPDATA>\jwaroevi\rarexsdb.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\rarexsdb.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Update
- Windows Security Center
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Injects code into
the following system processes:
Modifies file system:
Creates the following files:
- %ALLUSERSPROFILE%\Application Data\ybfcuwpc.log
- <LS_APPDATA>\lawhwilb.log
- <LS_APPDATA>\jwaroevi\rarexsdb.exe
- %TEMP%\byjjjqlf.exe
- %TEMP%\ifqydaby.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\rarexsdb.exe
Network activity:
Connects to:
- 'ga####mqlprkx.com':443
- 'hv###fytcx.com':443
- 'eb###inohmp.com':443
- 'xd###fqkpfs.com':443
- 'ru#####nbsmmxewdkq.com':443
- 'j7#####hstwr61ki.com':443
- '74.##5.232.51':80
- 'en####qyitkmdy.com':443
- 'os#####llgcrpwuelm.com':443
UDP:
- DNS ASK ky###uyqtd.com
- DNS ASK cc####xvtfve.com
- DNS ASK oo#####ymilhrfqvl.com
- DNS ASK ps####iwmxgnnag.com
- DNS ASK rq###xlm.com
- DNS ASK lt#####euuevxxytwxb.com
- DNS ASK rx#####gdeimlrbl.com
- DNS ASK vv#####wxaikfrqjw.com
- DNS ASK da#####vujrsmjkbkdd.com
- DNS ASK cq#####bqrccsqyx.com
- DNS ASK ka#####xhoopsokln.com
- DNS ASK ir#####lirgxenec.com
- DNS ASK os####sknxhi.com
- DNS ASK we###dbd.com
- DNS ASK iy###luu.com
- DNS ASK dr####tiryhdn.com
- DNS ASK si#####dyoasogaqrk.com
- DNS ASK ac###yrasn.com
- DNS ASK bi#####dybjrgwodpb.com
- DNS ASK ga####mqlprkx.com
- DNS ASK hv###fytcx.com
- DNS ASK eb###inohmp.com
- DNS ASK xd###fqkpfs.com
- DNS ASK ru#####nbsmmxewdkq.com
- DNS ASK j7#####hstwr61ki.com
- DNS ASK google.com
- DNS ASK en####qyitkmdy.com
- DNS ASK os#####llgcrpwuelm.com
- DNS ASK xn#####sxrafnvrdh.com
- DNS ASK gs###fendh.com
- DNS ASK au###yqwgni.com
- DNS ASK ot###hudh.com
- DNS ASK xf#####jclptdgdsug.com
- DNS ASK sx####ryoqts.com
- DNS ASK ar####mhgimikfp.com
- DNS ASK oc###mne.com
- DNS ASK cp#####hujfhrerb.com
- DNS ASK fy#####axwxhaqjijr.com
Miscellaneous:
Creates and executes the following:
Executes the following:
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