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Trojan.Win32.FlyStudio_ff48e41b60


WS.Reputation.1 (Symantec), Win32/Heur (AVG), Packed.Win32.Themida.FD, Trojan-PSW.Win32.MSNPassword.FD, Trojan.Win32.FlyStudio.FD, Trojan.Win32.IEDummy.FD, GenericEmailWorm.YR, GenericInjector.YR, TrojanFlyStudio.YR (Lavasoft MAS)Behaviour: Trojan-PSW, Trojan, Worm, EmailWorm, Packed

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

Summary

MD5: ff48e41b608717a609682f2d4ec4a9bd

SHA1: 53be04f1d4f112647e3fdf89248dfe0398d2f929

SHA256: 1c01950f5be4aa0a2ed81b92715218dfa434d8d56f4e6993f1b1987641882d3b

SSDeep: 49152:VrUrP7wH6CtjpjDW5cOuoZdj6iMPnocUFGn1LHROEwTDK45UnBIJH:VQT7bCtZDWqOSFPEFGn1R3cUnud

Size: 2543616 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6, ACProtect141

Company: no certificate found

Created at: 2014-01-27 16:09:56

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).

Dynamic Analysis

Payload

Behaviour Description
EmailWormWorm 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:1612

Mutexes

The following mutexes were created/opened:

CTF.TMD.MutexDefaultS-1-5-21-1844237615-1960408961-1801674531-1003CTF.Layouts.MutexDefaultS-1-5-21-1844237615-1960408961-1801674531-1003CTF.Asm.MutexDefaultS-1-5-21-1844237615-1960408961-1801674531-1003CTF.Compart.MutexDefaultS-1-5-21-1844237615-1960408961-1801674531-1003CTF.LBES.MutexDefaultS-1-5-21-1844237615-1960408961-1801674531-1003ZonesLockedCacheCounterMutexZonesCacheCounterMutexZonesCounterMutexWininetProxyRegistryMutexWininetConnectionMutexWininetStartupMutexc:!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!_RasPbFileShimCacheMutex

File activity

The process %original file name%.exe:1612 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\OHYRGXIJ\loadConfig_v4298[1].xml (28032 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\05I7KPMB\service[1].htm (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\mg1[1].htm (556 bytes)
%Documents and Settings%\%current user%\Cookies\index.dat (964 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\Strategy[1].xml (150 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\89AJKDYV\get_code[1].htm (9 bytes)
%Documents and Settings%\%current user%\Cookies\Current_User@xcdf[1].txt (298 bytes)
C:\config.ini (57 bytes)

Registry activity

The process %original file name%.exe:1612 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"

[HKCU\Software\Microsoft\Windows Script\Settings]
"JITDebug" = "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 28 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2A F1 41 18 3A 37 61 C0 04 7A 20 64 8D 0D 22 3F"

[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):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\OHYRGXIJ\loadConfig_v4298[1].xml (28032 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\05I7KPMB\service[1].htm (0 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\mg1[1].htm (556 bytes)
    %Documents and Settings%\%current user%\Cookies\index.dat (964 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OX6J4PMZ\Strategy[1].xml (150 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\89AJKDYV\get_code[1].htm (9 bytes)
    %Documents and Settings%\%current user%\Cookies\Current_User@xcdf[1].txt (298 bytes)
    C:\config.ini (57 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.

Static Analysis

VersionInfo

Company Name:
Product Name: qq??????
Product Version: 17.5.0.0
Legal Copyright: ?????? ????????
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 17.5.0.0
File Description: qq??????
Comments: qq??????
Language: English (United States)

Company Name: Product Name: qq??????Product Version: 17.5.0.0Legal Copyright: ?????? ????????Legal Trademarks: Original Filename: Internal Name: File Version: 17.5.0.0File Description: qq??????Comments: qq??????Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text409623879689420805.545af75ace5f188ec7e6f0ef19d1401775c
.ups2392064158105615810565.4490343975525246f622e63ce8caf938c0e11
.idata3973120409640961.27697f9079c686d0b857a8521daa41177a22
.rsrc3977216819281922.598734f34aa458bb6badfedc6a187fa49078b
.ups3985408409640965.533746e4d988dd85f05551014cb186903c3c5

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL IP
hxxp://ad.51pc114.cn/setup/a.html122.228.204.12
hxxp://ad.51pc114.cn/ad/mg1.htm122.228.204.12
hxxp://www.7532.com/hao123.htm122.224.9.42
hxxp://www.7532.com/2345.htm122.224.9.42
hxxp://meigui.qq.com/Strategy.xml?0.9743528054095805112.90.78.171
hxxp://meigui.qq.com/loadConfig_v4298.xml112.90.78.171
hxxp://u.3393.com/t/?pid=155715&show_t=3121.10.173.29
hxxp://u.3393.com/kernel/get_code.php?pid=155715&show_t=3&ti=0&p=u.3393.com/t/&time=0.04522900 1431999583121.10.173.29
hxxp://x2.tcdn.qq.com/cdn/swf_0908/
hxxp://u.3393.com/kernel/service.php?token=VWYANVFyBW0JJAIiBmJSdAYLAi4GNAEoBiMHMQIgA3M=&title=QQ猫戮