Trojan.Win32.Generic!BT (VIPRE), GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR (Lavasoft MAS)Behaviour: Trojan, Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: fa16ff46e932b831ca0a89f1e0b8e967
SHA1: b0a0cb1042ccf7436376ac9f2c4ad142536f88f9
SHA256: 29fd46775d084d3308b3c43f2c05dd6a2c9df4e2b224adb0614ab426952b3e31
SSDeep: 6144:sddKh/ERAnDQexUn9w0B I9raBZjGYc9F9YLgGi9V9rRQ a:sr0/ERADQ3zr8ZKv9YwL9rRQ
Size: 273920 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: ApPure
Created at: 2014-03-21 18:24:36
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):
kyim.exe:1132
kyim.exe:744
tmp09924f2b.exe:1008
%original file name%.exe:688
The Backdoor injects its code into the following process(es):No processes have been created.
File activity
The process tmp09924f2b.exe:1008 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\Yklavi\kyim.exe (283 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmpbc8913d5.bat (189 bytes)
The Backdoor deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\Yklavi (0 bytes)
%Documents and Settings%\%current user%\Application Data\Yklavi\kyim.exe (0 bytes)
The process %original file name%.exe:688 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\tmpa4a419f7.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Yklavi\kyim.exe (273 bytes)
Registry activity
The process kyim.exe:1132 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "62 FB 14 98 C1 8D 35 9D 26 98 D1 D3 2A 51 94 8F"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process kyim.exe:744 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "04 0C 87 D6 01 99 0C F5 EF B2 63 EA CD 5F 73 FD"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process tmp09924f2b.exe:1008 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "08 7D BE E5 4B 07 B9 78 94 30 2B 1A 6B 51 68 11"
[HKCU\Software\Microsoft\Mekui]
"Xyew" = "6F 11 69 8F 04 B2 9C 24 8E 84 29 1E 1F 9D C6 B9"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"WarnonBadCertRecving" = "0"
[HKCU\Software\Microsoft\Mekui]
"Vuwude" = "FC 7F 15 51 7A 35 B4 60 1A 81 8B 23 55 AB 6A B4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"EnableSPDY3_0" = "0"
The Backdoor modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
The Backdoor 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:
"UNCAsIntranet" = "1"
The Backdoor deletes the following value(s) in system registry:
The Backdoor disables automatic startup of the application by deleting the following autorun value:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"{9E3E114F-ABBF-D144-5A4A-418346001DD6}"
The process %original file name%.exe:688 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "16 2D E5 27 4F DA D9 99 C1 AC 45 AE 98 44 E4 3C"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
Network activity (URLs)
URL | IP |
---|---|
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootseq.txt | |
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootstl.cab | |
hxxp://www.google.com/webhp | 173.194.43.52 |
hxxp://www.google.ca/webhp?gfe_rd=cr&ei=QkEvU46JB6Pb8gfS7IHQCQ | 173.194.43.63 |
www.download.windowsupdate.com | 63.151.28.75 |
seooptimisaion2traffic.com | 46.118.31.184 |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
The Backdoor installs the following user-mode hooks in WININET.dll:
HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetWriteFile
InternetWriteFileExA
InternetQueryDataAvailable
HttpOpenRequestW
InternetConnectW
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle
InternetConnectA
HttpOpenRequestA
The Backdoor installs the following user-mode hooks in CRYPT32.dll:
PFXImportCertStore
The Backdoor installs the following user-mode hooks in USER32.dll:
GetClipboardData
TranslateMessage
The Backdoor installs the following user-mode hooks in WS2_32.dll:
WSASend
WSARecv
send
closesocket
The Backdoor installs the following user-mode hooks in kernel32.dll:
GetFileAttributesExW
The Backdoor installs the following user-mode hooks in ntdll.dll:
NtCreateThread
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*
- Scan a system with an anti-rootkit tool.
- Terminate malicious process(es) (How to End a Process With the Task Manager):
kyim.exe:1132
kyim.exe:744
tmp09924f2b.exe:1008
%original file name%.exe:688 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\Application Data\Yklavi\kyim.exe (283 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmpbc8913d5.bat (189 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmpa4a419f7.bat (177 bytes) - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.