FakeAV.Win32.FakeRean_c766a59f7f – Adaware

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.FakeAV.104 (B) (Emsisoft), Fake-AV.Win32.FakeRean.2.FD, FakeAVWin32FakeRean.YR (Lavasoft MAS)Behaviour: Trojan, Fake-AV

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary

MD5: c766a59f7fb007cc31be48e30eb8b762

SHA1: 91a701cc572465240f94486f66687c0d4430c592

SHA256: d941f507ad0a7951da7c8a363a39a33a416aff90718d59a17fd50b56be48ca2d

SSDeep: 3072:6oWgx00cYK0wXx eZ7/VYNDa9CIjfEZwrJk Y0mQpE15XI pm0auT1xu78vXg17J:6oz03YO 8/iNoC8r6axpu4 pVRo8X1ch

Size: 274624 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: MicrosoftVisualCv71EXE, MicrosoftVisualCv70, UPolyXv05_v6

Company: Slimware Utilities, Inc.

Created at: 2012-12-22 11:37:06

Analyzed on: WindowsXP SP3 32-bit

Summary: Fake-AV. FakeAV programs generate exaggerated threat reports on the compromised computer then ask the user to purchase a registered version to remove those reported threats.

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Fake-AV creates the following process(es):

%original file name%.exe:1800

The Fake-AV injects its code into the following process(es):

fmi.exe:1824

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:1800 makes changes in the file system.

The Fake-AV creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Application Data\fmi.exe (274 bytes)

The process fmi.exe:1824 makes changes in the file system.

The Fake-AV creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\All Users\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)

The Fake-AV deletes the following file(s):

C:\%original file name%.exe (0 bytes)

Registry activity

The process %original file name%.exe:1800 makes changes in the system registry.

The Fake-AV creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C9 6F F9 40 73 25 7A BB 4C 3E 64 10 26 7E 44 07"

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusOverride" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile]
"DisableNotifications" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Templates" = "%Documents and Settings%\%current user%\Templates"

[HKLM\SOFTWARE\Microsoft\Security Center]
"FirewallDisableNotify" = "1"
"UpdatesDisableNotify" = "1"
"FirewallOverride" = "1"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile]
"EnableFirewall" = "0"

"DoNotAllowExceptions" = "0"

Antivirus notifications are disabled:

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusDisableNotify" = "1"

A firewall is disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"EnableFirewall" = "0"

The following service is disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess]
"Start" = "4"

Firewall notifications are disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DisableNotifications" = "1"

The process fmi.exe:1824 makes changes in the system registry.

The Fake-AV creates and/or sets the following values in system registry:

[HKCU\Software\Classes\exefile\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\fmi.exe -a %1 %*"

[HKCU\Software\Classes\exefile\shell\runas\command]
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Classes\exefile]
"(Default)" = "Application"

[HKCU\Software\Classes\.exe\shell\runas\command]
"IsolatedCommand" = "%1 %*"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1E 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Clients\StartMenuInternet]
"(Default)" = "IEXPLORE.EXE"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKCU\Software\Classes\exefile\shell\open\command]
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Classes\.exe\shell\runas\command]
"(Default)" = "%1 %*"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Templates" = "%Documents and Settings%\%current user%\Templates"

[HKCU\Software\Classes\exefile\shell\runas\command]
"(Default)" = "%1 %*"

[HKCU\Software\Classes\exefile]
"Content Type" = "application/x-msdownload"

[HKCU\Software\Classes\.exe\shell\open\command]
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Classes\.exe]
"(Default)" = "exefile"

[HKLM\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\fmi.exe -a %Program Files%\Internet Explorer\iexplore.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKCU\Software\Classes\exefile\DefaultIcon]
"(Default)" = "%1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKCU\Software\Microsoft\Windows]
"Identity" = "3044072876"

[HKCU\Software\Classes\.exe\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\fmi.exe -a %1 %*"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "30 A0 A4 AE 12 67 46 7C 37 E1 77 55 E5 48 CA 18"

[HKCU\Software\Classes\.exe\DefaultIcon]
"(Default)" = "%1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

[HKCU\Software\Classes\.exe]
"Content Type" = "application/x-msdownload"

The Fake-AV modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Fake-AV modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Fake-AV modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

To automatically run itself each time Windows is booted, the Fake-AV adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ctfmon.exe" = "%System%\ctfmon.exe"

The Fake-AV deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

Dropped PE files

There are no dropped PE files.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

Click (here) to download and install Ad-Aware Free Antivirus.
Update the definition files.
Run a full scan of your computer.

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:1800
Delete the original Fake-AV file.
Delete or disinfect the following files created/modified by the Fake-AV:
%Documents and Settings%\%current user%\Local Settings\Application Data\fmi.exe (274 bytes)
%Documents and Settings%\%current user%\Templates\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\All Users\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\1pb78m8n6he1l1565b3k36w7o7of8ksb88y53s63tpqg0vl (191 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ctfmon.exe" = "%System%\ctfmon.exe"
Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	35443	36864	4.56152	f14f6ac149f4ccf5872ce617d1f6e7a0
.rdata	40960	8172	8192	3.76252	f7adf8d1ab2fde477bf098d1e3ed6a93
.data	49152	8896	4096	2.45359	41bcbed02299352c9970270573a881af
.vdata	61440	1985010	217088	5.35219	401c164e967170cbe5abc5a30111139e
.rsrc	2048000	3426	4096	2.49303	52c30b1fb1e1f4652cc84f342fde641c

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 3
a4e2543641e0484ea744bdff1c25d9f5
2f2e293c09da9bd5eb46190a2933183c
15a88fe1de85ed847c25adbb61df1f62

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Fake-AV connects to the servers at the folowing location(s):

Strings from Dumps

fmi.exe_1824_rwx_00401000_001F4000:

p.S

2010:06:04 04:17:53

hXXp://ns.adobe.com/xap/1.0/

2010-06-04T04:17:53.229

John

2010-06-04T04:17:53.229

John

,!.fy

3d%D-

/X.Rp

_U$%x

(7),01444

'9=82<.342>

2010:06:04 04:07:41

2010-06-04T04:07:41.468

John

2010-06-04T04:07:41.468

John

.IDATx

2010:06:04 04:18:38

2010-06-04T04:18:38.428

John

2010-06-04T04:18:38.428

John

HTTP/1.0 200 OK

Date: %s

Expires: %s

Content-Type: %s

2010:06:04 04:19:08

2010-06-04T04:19:08.340

John

2010-06-04T04:19:08.340

John

]sM-H%x

P%Sp

{]m%X-de

2010:06:04 04:19:40

2010-06-04T04:19:40.162

John

2010-06-04T04:19:40.162

John

$%.wH

B.fAk

00000000

2010:06:04 04:20:15

2010-06-04T04:20:15.844

John

2010-06-04T04:20:15.844

John

9%D,3

gdiplus.dll

user32.dll

wsock32.dll

ws2_32.dll

oleaut32.dll

gdi32.dll

advapi32.dll

uxtheme.dll

ole32.dll

shell32.dll

comctl32.dll

shlwapi.dll

version.dll

msimg32.dll

ntdll.dll

kernel32.dll

microsoft.com

Software\Microsoft\Windows

SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

IEXPLORE.EXE

FIREFOX.EXE

%System%\ctfmon.exe

ctfmon.exe

Software\Microsoft\Windows\CurrentVersion\Run

%s\shell\%s\command

%s, %.2i %s %.4i %.2i:%.2i:%.2i GMT

User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

HTTP/1.0

HTTP/1.

PSSh@

PSShY.]

PSShK

PSShE

SSSSSSh

SSSSh

`.rda

cmd.9exz>/C

URLDA

P.ah!

.text

`.rdata

@.data

.reloc

%sx.tmp

%s%sx

cmd.exe /C del /Q /F "%s"

%s%u%u.tmp

msvcrt.dll

URLDownloadToFileA

urlmon.dll

WS2_32.dll

GetWindowsDirectoryA

KERNEL32.dll

USER32.dll

%WinDir%\assembly\NativeImages_v2.0.50727_32\PresentationUI\6d2716a55eb8ce6fc4cbf83f3ab329e3\

31-1003\

h1 { color: #4465A2; font-size: 1.1em; font-weight: normal; vertical-align:bottom; margin-top: 7px; margin-bottom: 4px; }h2 { font-size: 0.9em; font-weight: normal; margin-top: 20px; margin-bottom: 1px; }h3 { font-size: 0.9em; font-weight: normal; margin-top: 10px; margin-bottom: 1px; }h4 { font-size: 0.9em; font-weight: normal; margin-top: 12px; margin-bottom: 1px; }.b { vertical-align: middle; margin-top: %MF%px; margin-right: 6px; }ul, ol { font-size: 0.9em; list-style-position: outside; margin-top: 1px; margin-bottom: 1px; padding-top: 1px; padding-bottom: 1px; line-height: 1.3em; }

Windows recommend Activate %1

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