A currently ongoing Facebook spreading malware-serving campaign, entices users into downloading and executing a malicious executable, pretending to be a "Who's Viewed Your Facebook Profile" extension. In reality though, the executable, part of a campaign that's been ongoing for several months, will steal private information from local browsers, will auto-start on Windows starup, and will attempt to infect all of the victim's friends across Facebook.
The executable, including several other related executables part of the campaign, are currently hosted on Google Code, and according to Google Code's statistics, one of the malicious files has already been downloaded 1,870,788 times. Surprisingly, the Coode Project is called "Project Don't Download". Very interesting self-contradicting social engineering attempt.
Let's dissect the campaign, list the domain's portfolio used in it, provide detection rates for the malicious executables, and connect the campaign to multiple other campaigns observed in the wild over the last couple of weeks.
Sample redirection chain:
hxxp://cnlz3.tk/?2959858 -> hxxp://profilelo.8c1.net/ -> hxxp://profileste.uni.me/?skuwjjsadsuquwhdas -> hxxps://project-dont-download.googlecode.com/files/Profile%20View%20-%205v2.exe
profilelo.8c1.net - 184.108.40.206
profileste.uni.me - 220.127.116.11
project-dont-download.googlecode.com - Email: firstname.lastname@example.org
Detection rate for the malicious executable: MD5: c5b2247a37a8d26063af55c6c975782d - detected by 23 out of 47 antivirus scanners as JS:Clicker-P [Trj]; RDN/Generic.dx!chs
Once executed, the sample drops the following MD5s on the affected hosts:
Download statistics for the malicious executables hosted on Google Code:
Profile Viewer - 5.exe - 1,870,788 downloads
Profile Stalker - V.exe - 45983 downloads
Profile View - 5v2.exe - 9496 downloads
Profile Stalker - D.exe - 2 downloads
Detection rates for the malicious executables hosted on Google Code:
Profile Stalker - D.exe - MD5: c9220176786fe074de210529570959c5 - detected by 3 out of 47 antivirus scanners as Trojan.AVKill.30538; JS/TrojanClicker.Agent.NDL
Profile Stalker - V.exe - MD5: a6073378d764e3af4cb289cac91b3f97 - detected by 24 out of 47 antivirus scanners as JS/TrojanClicker.Agent.NDL; Trojan.Win32.Clicker!BT
Profile Viewer - 5.exe - MD5: 814837294bc34f288e31637bab955e6c - detected by 24 out of 47 antivirus scanners as Troj/Agent-ABOE
Samples phone back to the followind URLs/domains:
stats.app-data.net - 18.104.22.168
app-static.crossrider.com - 22.214.171.124
errors.app-data.net - 126.96.36.199
Facebook and Google have been notified.
This post has been reproduced from Dancho Danchev's blog. Follow him on Twitter.