Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'Remcos' = '"%APPDATA%\Remcos\remcos.exe"'
Creates or modifies the following files
- <SYSTEM32>\tasks\name
Malicious functions
Injects code into
the following user processes:
- remcos.exe
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\Google\Google Talk\Accounts]
- [<HKLM>\Software\Wow6432Node\Mirabilis\ICQ\NewOwners]
- [<HKCU>\Software\AIM\AIMPRO]
- [<HKCU>\Software\America Online\AIM6\Passwords]
- [<HKCU>\Software\America Online\AOL Instant Messenger (TM)\CurrentVersion\Users]
- [<HKLM>\Software\Wow6432Node\Miranda]
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Trillian]
- [<HKCU>\Software\Mirabilis\ICQ\NewOwners]
- [<HKCU>\Software\Microsoft\Windows Live Mail]
- [<HKCU>\Software\Yahoo\Pager]
- [<HKCU>\Software\Microsoft\MSNMessenger]
- [<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
- [<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Internet Account Manager\Accounts]
- [<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
- [<HKCU>\Software\Microsoft\Internet Account Manager\Accounts]
- [<HKCU>\Software\Microsoft\IdentityCRL]
- [<HKCU>\Software\Paltalk]
Reads files which store third party applications passwords
- %APPDATA%\mozilla\firefox\profiles.ini
- %LOCALAPPDATA%\google\chrome\user data\default\web data
- %LOCALAPPDATA%\google\chrome\user data\default\login data
- %APPDATA%\opera software\opera stable\login data
Modifies file system
Creates the following files
- %TEMP%\folder\file.exe
- %TEMP%\ce4b66f34c3a4a39a635a2e5228e4302.xml
- %APPDATA%\remcos\remcos.exe
- %TEMP%\install.vbs
- %APPDATA%\remcos\logs.dat
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
- %TEMP%\hkfvmaavezelspdwzstjesrja
- %TEMP%\oafkjlrcfhzmrmukekp
Deletes the following files
- %TEMP%\install.vbs
- %TEMP%\oafkjlrcfhzmrmukekp
Network activity
TCP
- 'ei######sscm.duckdns.org':2558
UDP
- DNS ASK ei######sscm.duckdns.org
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\wscript.exe' "%TEMP%\install.vbs"
- '%APPDATA%\remcos\remcos.exe'
- '%APPDATA%\remcos\remcos.exe' /stext "%TEMP%\hkfvmaavezelspdwzstjesrja"
- '%APPDATA%\remcos\remcos.exe' /stext "%TEMP%\cgxyolwqgpocejnernbeskgjjyfkyzqo"
- '%APPDATA%\remcos\remcos.exe' /stext "%TEMP%\oafkjlrcfhzmrmukekp"
- '%APPDATA%\remcos\remcos.exe' /stext "%TEMP%\qvkvjebvtprrbsionvjozd"
- '%APPDATA%\remcos\remcos.exe' /stext "%TEMP%\bxqokwmxhxjvegesefwikimhp"
- '%WINDIR%\syswow64\cmd.exe' /c schtasks /Create /TN name /XML "%TEMP%\ce4b66f34c3a4a39a635a2e5228e4302.xml"' (with hidden window)
- '%WINDIR%\syswow64\wscript.exe' "%TEMP%\install.vbs"' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c "%APPDATA%\Remcos\remcos.exe"' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c schtasks /Create /TN name /XML "%TEMP%\ce4b66f34c3a4a39a635a2e5228e4302.xml"
- '%WINDIR%\syswow64\schtasks.exe' /Create /TN name /XML "%TEMP%\ce4b66f34c3a4a39a635a2e5228e4302.xml"
- '%WINDIR%\syswow64\cmd.exe' /c "%APPDATA%\Remcos\remcos.exe"
