Technical Information
To ensure autorun and distribution
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\iwCf.dll] 'Start' = '00000002'
- [<HKLM>\System\CurrentControlSet\Services\iwCf.dll] 'ImagePath' = '<SYSTEM32>\regsvr32.exe "<SYSTEM32>\RmhweyVGQzlT\iwCf.dll"'
Creates the following services
- 'iwCf.dll' <SYSTEM32>\regsvr32.exe "<SYSTEM32>\RmhweyVGQzlT\iwCf.dll"
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx1.ocx
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx2.ocx
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx3.ocx
Modifies file system
Creates the following files
- %HOMEPATH%\wdusx2.ocx
- %HOMEPATH%\wdusx3.ocx
- <Current directory>\09c31000
Moves the following files
- from %HOMEPATH%\wdusx2.ocx to <SYSTEM32>\rmhweyvgqzlt\iwcf.dll
Substitutes the following files
- <PATH_SAMPLE>.xls
Network activity
Connects to
- 'za###marine.com':443
- '10#.#6.149.105':8080
- '93.##4.209.107':8080
- '10#.#26.216.86':443
- '17#.#26.176.79':8080
- '59.##8.253.194':443
- '85.##.120.45':8080
- '10#.#1.204.169':8080
- '54.##.106.167':8080
- '20#.#34.4.210':7080
- '19#.#7.239.39':8080
- '10#.85.95.4':8080
- '64.##7.55.231':8080
- '13#.#96.72.155':8080
- '20#.#8.34.99':8080
- '37.##.244.177':8080
- '68.##3.91.111':8080
- '15#.#45.111.0':8080
- '10#.#54.12.236':7080
- '19#.#4.98.190':8080
- '10#.#48.225.227':8080
- '11#.#8.72.86':443
- '88.##7.172.165':8080
- '10#.#24.241.74':8080
- '10#.#44.79.94':443
- '19#.#99.70.22':8080
- '16#.#2.254.68':443
- 'la###touts.com':80
- 'kr###str.com':80
- '20#.#9.239.162':443
- '10#.#1.99.57':8080
TCP
HTTP GET requests
- http://kr###str.com/tr/68yHRhfuU7Qj/
- http://la###touts.com/cgi-bin/Rea3Iu3wGvgAbTset0/
Other
- 'za###marine.com':443
- '16#.#2.254.68':443
- '19#.#99.70.22':8080
- '10#.#44.79.94':443
- '10#.#24.241.74':8080
- '10#.#48.225.227':8080
- '19#.#4.98.190':8080
- '15#.#45.111.0':8080
- '68.##3.91.111':8080
- '20#.#9.239.162':443
- '13#.#96.72.155':8080
- '54.##.106.167':8080
- '10#.#26.216.86':443
UDP
- DNS ASK za###marine.com
- DNS ASK kr###str.com
- DNS ASK la###touts.com
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx1.ocx' (with hidden window)
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx2.ocx' (with hidden window)
- '<SYSTEM32>\regsvr32.exe' /S ..\wdusx3.ocx' (with hidden window)
Executes the following
- '<SYSTEM32>\regsvr32.exe' "<SYSTEM32>\RmhweyVGQzlT\iwCf.dll"
