UDS:DangerousObject.Multi.Generic (Kaspersky), Backdoor.Win32.Kelihos.FD, mzpefinder_pcap_file.YR, GenericInjector.YR (Lavasoft MAS)Behaviour: Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 375788305c951f000679f6bd2b591ca8
SHA1: a62335b6cba864333cc4fc129808191ad518e9a9
SHA256: 16cbc6e7e7b34831adc65600c82340453268266da163d10b0159198c68f84891
SSDeep: 384:TwMTir5lvJu6ws9WSs6J DBL//72msiT0zKny1ZMJaRWCKdcFrqiO3p2i99:TQoGxOs9HScFrqiOZ2iz
Size: 27153 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2013-11-12 13:23:51
Analyzed on: WindowsXP SP3 32-bit
Summary: Backdoor. Malware that enables a remote control of victim's machine.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Backdoor creates the following process(es):
dwwin.exe:360
%original file name%.exe:1096
The Backdoor injects its code into the following process(es):
temp3303302130.exe:1220
temp2279324397.exe:184
File activity
The process dwwin.exe:360 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\A60AD.dmp (50612 bytes)
The process temp3303302130.exe:1220 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\5a33_appcompat.txt (1943 bytes)
The process temp2279324397.exe:184 makes changes in the file system.
The Backdoor deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\tmp.exe (0 bytes)
The process %original file name%.exe:1096 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\temp3303302130.exe (3914 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\temp2279324397.exe (3914 bytes)
Registry activity
The process dwwin.exe:360 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "89 12 13 16 6E E1 2B B7 AF B6 D0 D0 0E 6C 11 21"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[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\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"
[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\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[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\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\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 14 00 00 00 01 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Backdoor deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process temp3303302130.exe:1220 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7B F5 CD E4 2A C0 54 80 9F 61 66 4D 32 31 41 6F"
[HKLM\SOFTWARE\Microsoft\Direct3D\MostRecentApplication]
"Name" = "temp3303302130.exe"
The Backdoor deletes the following registry key(s):
[HKLM\SOFTWARE\Microsoft\PCHealth\ErrorReporting\DW]
The Backdoor deletes the following value(s) in system registry:
[HKLM\SOFTWARE\Microsoft\PCHealth\ErrorReporting\DW]
"DWFileTreeRoot"
The process temp2279324397.exe:184 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Notepad]
"infoPlayedCurrent" = "00 00 00 00 00 00 00 00"
"styleModifiedPrev" = "80"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"PersistentLocalizedName" = "24 80 F9 7F 7A 8E 04 CA 2B FB 1B 7B BB 57 98 A9"
"LineLoadedQuick" = "DBmcPcMQWFhgY rGYk4QzHBeF2fxbre7VIIUcoKG7DXliQpuWQPp6tr2lCnhY0ZDPg=="
[HKCU\Software\Microsoft\Notepad]
"sizeCompletedValid" = "DBmcPcMQWFhgY rGYk4QzHBeF2fxbre7VIIUcoKG7DXliQpuWQPp6tr2lCnhY0ZDPg=="
[HKCU\Software\Sysinternals\Process Monitor]
"UrlEnabledUse" = "80"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"
[HKLM\System\CurrentControlSet\Services\nm\Parameters]
"EnableStationQueries" = "1"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"DBSavedUse" = "A2 49 4D F3 D9 1E 9F 88 01 01 08 6A 00 03 E9 03"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Sysinternals\Process Monitor]
"FlagsModifiedValid" = "00 00 00 00 00 00 00 00"
"RecordModifiedMax" = "DBmcPcMQWFhgY rGYk4QzHBeF2fxbre7VIIUcoKG7DXliQpuWQPp6tr2lCnhY0ZDPg=="
[HKLM\System\CurrentControlSet\Services\nm\Parameters]
"ComputerName" = "XP6"
"UserName" = "%CurrentUserName%"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "80 D8 7F 71 AD 09 0C 16 81 F7 CA D0 70 CB 18 A9"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"PlatformCompressedValid" = "00 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Direct3D\MostRecentApplication]
"Name" = "temp2279324397.exe"
[HKCU\Software\Microsoft\Notepad]
"activeModifiedTheme" = "24 80 F9 7F 87 48 7F 4D 60 4D 24 7E 64 71 50 1B"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"RecordEnabledCheck" = "80"
[HKCU\Software\Sysinternals\Process Monitor]
"DefaultCompressedRecord" = "24 80 F9 7F 73 9C 24 6E 63 05 7A C5 7D E4 61 17"
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NetworkChecker" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\temp2279324397.exe"
The process %original file name%.exe:1096 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "72 59 34 6F C5 5D 44 73 86 79 8C 87 8C 6D FA D8"
[HKLM\SOFTWARE\Microsoft\Direct3D\MostRecentApplication]
"Name" = "%original file name%.exe"
Network activity (URLs)
URL | IP |
---|---|
hxxp://123.240.9.110/mod2/tayran1.exe (Malicious) | |
hxxp://126.117.193.122/mod1/tayran1.exe (ET POLICY PE EXE or DLL Windows file download , Malicious) |
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):
dwwin.exe:360
%original file name%.exe:1096 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\Local Settings\Temp\A60AD.dmp (50612 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\5a33_appcompat.txt (1943 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\temp3303302130.exe (3914 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\temp2279324397.exe (3914 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NetworkChecker" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\temp2279324397.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.