Gen.Variant.Strictor.92793_23c8a1895c

Dynamic Analysis

Payload

Behaviour	Description
EmailWorm	Worm can send e-mails.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:772

The Trojan injects its code into the following process(es):No processes have been created.

Mutexes

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

File activity

The process %original file name%.exe:772 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:772 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

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

[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"

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

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

"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[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]
"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"

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

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2F 5E 7D EE 54 81 AE AB A9 A1 00 1A 77 6C 14 14"

[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"

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

[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"

The Trojan 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 Trojan 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 Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

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

The Trojan 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

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

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):

   %original file name%.exe:772

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)

4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   

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

Static Analysis

VersionInfo

Company Name: The Perpetuation Endeavor
Product Name: Chew-WGA v0.9
Product Version: 2.5.3.2
Legal Copyright: Copyright (c) 2009 - Anemeros Sof
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 2.5.3.2
File Description: The Perpetuation Endeavor
Comments: The Perpetuation Endeavor
Language: Language Neutral

Company Name: The Perpetuation EndeavorProduct Name: Chew-WGA v0.9Product Version: 2.5.3.2Legal Copyright: Copyright (c) 2009 - Anemeros SofLegal Trademarks: Original Filename: Internal Name: File Version: 2.5.3.2File Description: The Perpetuation EndeavorComments: The Perpetuation EndeavorLanguage: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	621602	622592	4.58108	428796b2b13125d0e36d4f5c8a3e9307
.rdata	626688	1038076	1040384	5.04394	82abb8896e97a0881a036f55678dbd92
.data	1667072	251690	73728	3.59444	a31bfd3ed38bfd8e8f9a25df71700223
.rsrc	1921024	29332	32768	3.3698	de76e43af38947d1986517a9f36ddc35

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://city.ip138.com/ip2city.asp	36.250.72.119
hxxp://www.ip138.com/ip2city.asp	203.130.58.30

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /ip2city.asp HTTP/1.1

User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

Accept: */*

Host: city.ip138.com

Cache-Control: no-cache

Connection: Keep-Alive

HTTP/1.1 200 OK

Date: Sat, 28 Nov 2015 09:25:58 GMT

Server: Microsoft-IIS/6.0

X-Powered-By: ASP.NET

Content-Length: 211

Content-Type: text/html

Set-Cookie: ASPSESSIONIDAATQCDBR=JGOIOFNAGOOHNGIFECFCFAGJ; path=/

Cache-control: private

<html>..<head>..<meta http-equiv="content-type" content="text/html; charset=gb2312">..<title> ....IP.... </title>..</head>..<body style="margin:0px"><center>....IP........[194.242.96.218] </center></body></html>HTTP/1.1 200 OK..Date: Sat, 28 Nov 2015 09:25:58 GMT..Server: Microsoft-IIS/6.0..X-Powered-By: ASP.NET..Content-Length: 211..Content-Type: text/html..Set-Cookie: ASPSESSIONIDAATQCDBR=JGOIOFNAGOOHNGIFECFCFAGJ; path=/..Cache-control: private..<html>..<head>..<meta http-equiv="content-type" co..

GET /ip2city.asp HTTP/1.1

User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

Accept: */*

Host: VVV.ip138.com

Cache-Control: no-cache

HTTP/1.0 302 Moved Temporarily

Server: Cdn Cache Server V2.0

Date: Sat, 28 Nov 2015 09:23:32 GMT

Content-Length: 0

Location: hXXp://city.ip138.com/ip2city.asp

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

%original file name%.exe_772:

.text

.text

`.rdata

`.rdata

@.data

@.data

.rsrc

.rsrc

t$(SSh

t$(SSh

~%UVW

~%UVW

u$SShe

u$SShe

WinINet.dll

WinINet.dll

wininet.dll

wininet.dll

MsgWaitForMultipleObjects

MsgWaitForMultipleObjects

HttpOpenRequestA

HttpOpenRequestA

HttpAddRequestHeadersA

HttpAddRequestHeadersA

HttpSendRequestA

HttpSendRequestA

HttpQueryInfoA

HttpQueryInfoA

{A0005538-9391-4dd9-B4D6-8EB7B9360F08}

{A0005538-9391-4dd9-B4D6-8EB7B9360F08}

VIP@VIP.com

VIP@VIP.com

BDE.exe

BDE.exe

D:\Program Files\Bac\BDE.exe

D:\Program Files\Bac\BDE.exe

hXXp://tool.chacuo.net/mailanonymous

hXXp://tool.chacuo.net/mailanonymous

_s=

_s=

_t=

_t=

&type=anonymous&arg=f=

&type=anonymous&arg=f=

http=

http=

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

HTTP/1.1

HTTP/1.1

Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*

Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*

Content-Type: application/x-www-form-urlencoded

Content-Type: application/x-www-form-urlencoded

hXXp://

hXXp://

@hXXp://VVV.ip138.com/ip2city.asp

@hXXp://VVV.ip138.com/ip2city.asp

QQ.exe

QQ.exe

taskmgr.exe

taskmgr.exe

i^.mL

i^.mL

1501443635@qq.com

1501443635@qq.com

.tq8*

.tq8*

%d&&'

%d&&'

123456789

123456789

00003333

00003333

deflate 1.1.3 Copyright 1995-1998 Jean-loup Gailly

deflate 1.1.3 Copyright 1995-1998 Jean-loup Gailly

inflate 1.1.3 Copyright 1995-1998 Mark Adler

inflate 1.1.3 Copyright 1995-1998 Mark Adler

%$%,%4%

%$%,%4%

S%T%U%V%W%X%Y%Z%[%\%]%^%_%`%a%

S%T%U%V%W%X%Y%Z%[%\%]%^%_%`%a%

b%c%d%e%f%g%h%i%j%k%l%

b%c%d%e%f%g%h%i%j%k%l%

W%X%Y%Z%[%

W%X%Y%Z%[%

Z%T%i%f%`%P%l%

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%$%a%b%V%U%c%Q%W%]%\%[%

%$%a%b%V%U%c%Q%W%]%\%[%

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eZl%u

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R:\Sg|p5rL

R:\Sg|p5rL

e$e#e e4e5e7e6e8eKuHeVeUeMeXe^e]erexe

e$e#e e4e5e7e6e8eKuHeVeUeMeXe^e]erexe

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