Gen.Trojan.Heur.PT.wiWfaijd7Mc_d5bd00cb0a

by malwarelabrobot on November 30th, 2014 in Malware Descriptions.

Gen:Trojan.Heur.PT.wiWfaijd7Mc (B) (Emsisoft), Gen:Trojan.Heur.PT.wiWfaijd7Mc (AdAware), Trojan.Win32.FlyStudio.FD, GenericEmailWorm.YR, TrojanFlyStudio.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: d5bd00cb0a760bacbafc1005608e0ae7
SHA1: 7e6fd7fbcc1d9eb54aaa7abaae423047ed70fa32
SHA256: 5e4efc3ff763f3f73ad553e4d34483963d89b10f13692c18492a02efba97b7b9
SSDeep: 6144:TaB0IMbEIs9/oatZlSkz1p4KSLayLM/onpYIXFT249bmpHtj:TIzMbEOaP1JsayLBDFBbMtj
Size: 371200 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PECompactV2X, PECompactv20, UPolyXv05_v6
Company: Premium Installer
Created at: 2014-08-05 11:27:51
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:188

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:188 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)
%Documents and Settings%\%current user%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\I5S30I2C\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\G1YVOHE3\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\N3QHP3HM\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8549SXQ1\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:188 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 1B 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C1 C3 10 ED 03 5F 9E C9 2D 0E 36 BC 05 54 47 6C"

[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

VersionInfo

No information is available.

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.data 4096 1044480 364544 5.54483 a01193334a936abcab9277b85df72bb1
.rsrc 1048576 8192 5632 5.28206 4232ba3dc201e423a3ec42349bab4c13

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://98.126.81.62/Ftpip.txt
hxxp://98.126.81.62/Ftpid.txt
hxxp://98.126.81.62/Ftpmima.txt
hxxp://98.126.81.62/zhen.txt
hxxp://98.126.81.62/jia.txt


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET POLICY Unsupported/Fake Windows NT Version 5.0

Traffic

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

%original file name%.exe_188:

.data
@.rsrc
.rsrc
t$(SSh
~%UVW
u$SShe
user32.dll
wininet.dll
kernel32.dll
EnumWindows
EnumChildWindows
HttpOpenRequestA
HttpSendRequestA
HttpQueryInfoA
MsgWaitForMultipleObjects
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://
%Program Files% (x86)
Config.Msi
$RECYCLE.BIN
).zip
hXXp://ip.qq.com
Windows 2000
Windows Server 2003
Windows Vista
Windows 7
Windows 8
Chrome_WidgetWin_1
Windows Internet Explorer_Frame
hXXp://98.126.81.62/Ftpmima.txt
hXXp://98.126.81.62/Ftpid.txt
hXXp://98.126.81.62/Ftpip.txt
hXXp://98.126.81.62/jia.txt
hXXp://98.126.81.62/zhen.txt
inflate 1.1.3 Copyright 1995-1998 Mark Adler
F%*.*f
CNotSupportedException
commctrl_DragListMsg
Afx:%x:%x:%x:%x:%x
Afx:%x:%x
COMCTL32.DLL
CCmdTarget
__MSVCRT_HEAP_SELECT
iphlpapi.dll
SHLWAPI.dll
MPR.dll
WINMM.dll
WS2_32.dll
VERSION.dll
RASAPI32.dll
GetProcessHeap
WinExec
GetWindowsDirectoryA
KERNEL32.dll
GetKeyState
USER32.dll
GetViewportOrgEx
GDI32.dll
WINSPOOL.DRV
RegCloseKey
RegOpenKeyExA
RegCreateKeyExA
ADVAPI32.dll
ShellExecuteA
SHELL32.dll
ole32.dll
OLEAUT32.dll
COMCTL32.dll
WSOCK32.dll
FtpPutFileA
InternetCrackUrlA
InternetCanonicalizeUrlA
WININET.dll
GetCPInfo
CreateDialogIndirectParamA
UnhookWindowsHookEx
SetWindowsHookExA
SetViewportOrgEx
OffsetViewportOrgEx
SetViewportExtEx
ScaleViewportExtEx
GetViewportExtEx
comdlg32.dll
.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)
%s@%s:%d
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
code %d bits %d->%d
gen_codes: max_code %d
bl code -
opt %lu(%lu) stat %lu(%lu) stored %lu lit %u dist %u
last_lit %u, last_dist %u, in %ld, out ~%ld(%ld%%)
.PAVCObject@@
.PAVCSimpleException@@
.PAVCMemoryException@@
.?AVCNotSupportedException@@
.PAVCResourceException@@
.PAVCUserException@@
.?AVCCmdTarget@@
.?AVCCmdUI@@
.?AVCTestCmdUI@@
.PAVCArchiveException@@
zcÁ
c:\%original file name%.exe
#include "l.chs\afxres.rc" // Standard components
A required .DLL file, %hs, was not found.
linked to missing export %hs:0xx.
linked to missing export %hs:%hs.
*pdw = 0xx
*pw = 0xx *pdw = 0xx
(*.*)
1.0.0.0

%original file name%.exe_188_rwx_00330000_00002000:

kernel32.dll
The procedure %s could not be located in the DLL %s.
The ordinal %d could not be located in the DLL %s.

%original file name%.exe_188_rwx_00401000_000F7000:

t$(SSh
~%UVW
u$SShe
user32.dll
wininet.dll
kernel32.dll
EnumWindows
EnumChildWindows
HttpOpenRequestA
HttpSendRequestA
HttpQueryInfoA
MsgWaitForMultipleObjects
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://
%Program Files% (x86)
Config.Msi
$RECYCLE.BIN
).zip
hXXp://ip.qq.com
Windows 2000
Windows Server 2003
Windows Vista
Windows 7
Windows 8
Chrome_WidgetWin_1
Windows Internet Explorer_Frame
hXXp://98.126.81.62/Ftpmima.txt
hXXp://98.126.81.62/Ftpid.txt
hXXp://98.126.81.62/Ftpip.txt
hXXp://98.126.81.62/jia.txt
hXXp://98.126.81.62/zhen.txt
inflate 1.1.3 Copyright 1995-1998 Mark Adler
F%*.*f
CNotSupportedException
commctrl_DragListMsg
Afx:%x:%x:%x:%x:%x
Afx:%x:%x
COMCTL32.DLL
CCmdTarget
__MSVCRT_HEAP_SELECT
iphlpapi.dll
SHLWAPI.dll
MPR.dll
WINMM.dll
WS2_32.dll
VERSION.dll
RASAPI32.dll
GetProcessHeap
WinExec
GetWindowsDirectoryA
KERNEL32.dll
GetKeyState
USER32.dll
GetViewportOrgEx
GDI32.dll
WINSPOOL.DRV
RegCloseKey
RegOpenKeyExA
RegCreateKeyExA
ADVAPI32.dll
ShellExecuteA
SHELL32.dll
ole32.dll
OLEAUT32.dll
COMCTL32.dll
WSOCK32.dll
FtpPutFileA
InternetCrackUrlA
InternetCanonicalizeUrlA
WININET.dll
GetCPInfo
CreateDialogIndirectParamA
UnhookWindowsHookEx
SetWindowsHookExA
SetViewportOrgEx
OffsetViewportOrgEx
SetViewportExtEx
ScaleViewportExtEx
GetViewportExtEx
comdlg32.dll
.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)
%s@%s:%d
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
code %d bits %d->%d
gen_codes: max_code %d
bl code -
opt %lu(%lu) stat %lu(%lu) stored %lu lit %u dist %u
last_lit %u, last_dist %u, in %ld, out ~%ld(%ld%%)
.PAVCObject@@
.PAVCSimpleException@@
.PAVCMemoryException@@
.?AVCNotSupportedException@@
.PAVCResourceException@@
.PAVCUserException@@
.?AVCCmdTarget@@
.?AVCCmdUI@@
.?AVCTestCmdUI@@
.PAVCArchiveException@@
zcÁ
c:\%original file name%.exe
#include "l.chs\afxres.rc" // Standard components
(*.*)
1.0.0.0

%original file name%.exe_188_rwx_00500000_00002000:

kernel32.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)
    %Documents and Settings%\%current user%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\I5S30I2C\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\G1YVOHE3\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\N3QHP3HM\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8549SXQ1\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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