Trojan.Generic.14756430_c93bd6baa5

by malwarelabrobot on July 30th, 2015 in Malware Descriptions.

Trojan.Generic.14756430 (B) (Emsisoft), Trojan.Generic.14756430 (AdAware), Trojan.Win32.FlyStudio.FD, GenericEmailWorm.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, EmailWorm


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

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Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: c93bd6baa5ea5c3f508d4d4fcec93944
SHA1: 354b27d0a56b0b43c46fce938d2b58060ae7e257
SHA256: e2b8269301cc86a136d43223e935d0b1b2c774d489b7f3084f49607a9e228aa4
SSDeep: 12288:chxodAuNOuP2bHo8afIqh1Zg/PR5nWFpPoSoldV:chuuYh2LozfZL6/Obc
Size: 765952 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, Armadillov171
Company: no certificate found
Created at: 2015-06-21 10:02:54
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

Behaviour Description
EmailWorm Worm can send e-mails.


Process activity

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

%original file name%.exe:1208

Mutexes

The following mutexes were created/opened:

ZonesLockedCacheCounterMutex
ZonesCounterMutex
ZonesCacheCounterMutex
WininetProxyRegistryMutex
WininetConnectionMutex
WininetStartupMutex
c:!documents and settings!adm!local settings!history!history.ie5!
c:!documents and settings!adm!cookies!
c:!documents and settings!adm!local settings!temporary internet files!content.ie5!
_!MSFTHISTORY!_
RasPbFile
ShimCacheMutex

File activity

The process %original file name%.exe:1208 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:1208 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" = "EA 30 73 D6 5D 0D FE 78 4A B1 37 0D 33 29 D3 DC"

[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"

[HKCU\Software\Microsoft\Multimedia\DrawDib]
"vga.drv 1276x846x32(BGR 0)" = "31,31,31,31"

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

VersionInfo

Company Name: ??QQ53902022
Product Name: ?????
Product Version: 1.0.0.0
Legal Copyright: ?????????,????,????,???
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.0.0.0
File Description: ????????
Comments: ??????????(http://www.eyuyan.com)
Language: Chinese (Simplified, PRC)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 502766 503808 4.53061 bb515a1a8d47995c05a5243556e8db20
.rdata 507904 171882 172032 4.50394 fc6fc921a5ecad37dd57663b48cf14dc
.data 679936 175624 61440 3.43665 361e78e176d46f3e42a2d2960a69f887
.rsrc 856064 23880 24576 3.34593 6e1d0c4ea6f7e6e5ef5d615d0d9a8e1a

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://cname.tool.la/
hxxp://ip.tool.la/ 42.120.41.140


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET POLICY Unsupported/Fake Windows NT Version 5.0

Traffic

GET / HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Accept: */*
Host: ip.tool.la
Cache-Control: no-cache


HTTP/1.1 200 OK
Server: nginx/1.0.15
Date: Wed, 29 Jul 2015 08:41:03 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.2.17p1
263b..<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN
" "hXXp://VVV.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">.<ht
ml xmlns="hXXp://VVV.w3.org/1999/xhtml">.<head>.<meta http
-equiv="Content-Type" content="text/html; charset=gb2312" />.<ti
tle>IP........</title>.<meta name="Keywords" content="IP..
......,IP...." />.<meta name="Description" content="IP..........
..........IP..........IP.........." />.<style type="text/css">
;..p_input {width:600px; margin:20px auto 0; text-align:center;}.body
{font-size:14px;line-height:150%;}.form{margin:0;padding:0;}.h1{paddin
g:0;margin:0;font-size:14px;}..result {width:600px; margin:0 auto; tex
t-align:center; font-size:16px; font-weight:bold; color:#FF0000;}..vti
tle {width:600px; margin:20px auto 0 auto; text-align:center;}..vconte
nt{width:600px; margin:0 auto;}..history {width:600px; margin:5px auto
0 auto; overflow:hidden;height:2em;}..history ul,.history li{padding:
0; margin:0; list-style:none;}..history li {float:left;width:25%; over
flow:hidden:}.</style>.<script type="text/javascript" languag
e="javascript">.function checkIP().{.var ipArray,q,j;.q = document.
frm.q.value;..if(/[A-Za-z_-]/.test(q)){. if(!/^([\w-] \.) ((com)|(net
)|(org)|(gov\.cn)|(info)|(cc)|(com\.cn)|(net\.cn)|(org\.cn)|(name)|(bi
z)|(tv)|(cn)|(mobi)|(name)|(sh)|(ac)|(io)|(tw)|(com\.tw)|(hk)|(com\.hk
)|(ws)|(travel)|(us)|(tm)|(la)|(me\.uk)|(org\.uk)|(ltd\.uk)|(plc\.uk)|
(in)|(eu)|(it)|(jp))$/.test(q)){. alert("..............");. do

<<< skipped >>>

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

%original file name%.exe_1208:

.text
`.rdata
@.data
.rsrc
t$(SSh
~%UVW
u$SShe
wininet.dll
HttpOpenRequestA
HttpSendRequestA
HttpQueryInfoA
hXXp://
hXXp://192.168.1.1/userRpm/SysRebootRpm.htm?Reboot=ÖØÆô·ÓÉÆ÷
Mozilla/4.0 (compatible; MSIE 9.0; Windows NT 6.1; 125LA; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)
http=
https
HTTP/1.1
Content-Type: application/x-www-form-urlencoded
hXXps://
hXXp://ip.tool.la/
&newpassword2=
&newpassword=
&oldpassword=
/userRpm/ChangeLoginPwdRpm.htm?oldname=
/userRpm/RestoreDefaultCfgRpm.htm?RestoreFactory=»Ö¸´³ö³§ÉèÖÃ
hXXp://192.168.1.1/userRpm/StatusRpm.htm?Disconnect=
hXXp://192.168.1.1/userRpm/StatusRpm.htm?Connect=
%S4WD
hg%fpM
S.Ac9SR
0.I%3s
,wAe.kI
aiUy'4xu
%c*@j
.eH'y
{&%U)
lj%4U
xe%CNs
9F.cLe
hJK.ZH
O.qt0
KERNEL32.DLL
COMCTL32.dll
GDI32.dll
MSIMG32.dll
MSVCRT.dll
MSVFW32.dll
USER32.dll
SkinH_EL.dll
@wininet.dll
hXXp://weibo.com/tuibao
192.168.1.1
192.168.2.1
%*.*f
CNotSupportedException
commctrl_DragListMsg
Afx:%x:%x:%x:%x:%x
Afx:%x:%x
COMCTL32.DLL
CCmdTarget
__MSVCRT_HEAP_SELECT
user32.dll
RASAPI32.dll
GetProcessHeap
WinExec
KERNEL32.dll
GetKeyState
SetWindowsHookExA
UnhookWindowsHookEx
EnumThreadWindows
EnumChildWindows
GetViewportOrgEx
WINMM.dll
WINSPOOL.DRV
RegCloseKey
RegOpenKeyExA
ADVAPI32.dll
ShellExecuteA
SHELL32.dll
ole32.dll
OLEAUT32.dll
WS2_32.dll
InternetCrackUrlA
InternetCanonicalizeUrlA
WININET.dll
GetCPInfo
CreateDialogIndirectParamA
SetViewportOrgEx
OffsetViewportOrgEx
SetViewportExtEx
ScaleViewportExtEx
GetViewportExtEx
comdlg32.dll
RegCreateKeyExA
.PAVCException@@
.PAVCNotSupportedException@@
.PAVCFileException@@
(*.prn)|*.prn|
(*.*)|*.*||
Shell32.dll
Mpr.dll
Advapi32.dll
User32.dll
Gdi32.dll
Kernel32.dll
(&07-034/)7 '
?? / %d]
%d / %d]
: %d]
(*.WAV;*.MID)|*.WAV;*.MID|WAV
(*.WAV)|*.WAV|MIDI
(*.MID)|*.MID|
(*.txt)|*.txt|
(*.JPG;*.BMP;*.GIF;*.ICO;*.CUR)|*.JPG;*.BMP;*.GIF;*.ICO;*.CUR|JPG
(*.JPG)|*.JPG|BMP
(*.BMP)|*.BMP|GIF
(*.GIF)|*.GIF|
(*.ICO)|*.ICO|
(*.CUR)|*.CUR|
%s:%d
windows
out.prn
%d.%d
%d / %d
%d/%d
Bogus message code %d
(%d-%d):
%ld%c
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
HTTP/1.0
%s <%s>
Reply-To: %s
From: %s
To: %s
Subject: %s
Date: %s
Cc: %s
%a, %d %b %Y %H:%M:%S
SMTP
msctls_hotkey32
.PAVCObject@@
.PAVCSimpleException@@
.PAVCMemoryException@@
.?AVCNotSupportedException@@
.PAVCResourceException@@
.PAVCUserException@@
.?AVCCmdTarget@@
.?AVCCmdUI@@
.?AVCTestCmdUI@@
.PAVCArchiveException@@
zcÁ
193.138.244.231
c:\%original file name%.exe
#include "l.chs\afxres.rc" // Standard components
1, 0, 6, 6
- Skin.dll
(*.*)
1.0.0.0
(hXXp://VVV.eyuyan.com)

%original file name%.exe_1208_rwx_10000000_0003E000:

`.rsrc
L$(h%f
SSh0j
msctls_hotkey32
TVCLHotKey
THotKey
\skinh.she
}uo,x6l5k%x-l h
9p%s m)t4`#b
e"m?c&y1`Ð<
SetViewportOrgEx
SetViewportExtEx
SetWindowsHookExA
UnhookWindowsHookEx
EnumThreadWindows
EnumChildWindows
`c%US.4/
!#$<#$#=
.text
`.rdata
@.data
.rsrc
@.UPX0
`.UPX1
`.reloc
hJK.ZH
O.qt0
KERNEL32.DLL
COMCTL32.dll
GDI32.dll
MSIMG32.dll
MSVCRT.dll
MSVFW32.dll
USER32.dll
SkinH_EL.dll
1, 0, 6, 6
- Skin.dll


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):No processes have been created.
  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).
  5. Reboot the computer.

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

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