MD5: d382415897ab20faa4ba2ce541eaf287
SHA1: 1ac594d03cfb609cfa2fca3ee19523c523042373
SHA256: 337ee83267c5d6e2b4870cdc6e58581d903782ea79ceaf01b0cdae0a47ed9e25
SSDeep: 6144:kuMi5Es47LFP0MHPucwGgcR9oMVE67chiGMUKmMtFWiRaymvOSF:kE5En7hcMHPuagpMBCXKPvRFSF
Size: 260608 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: BorlandDelphi30, UPolyXv05_v6
Company: no certificate found
Created at: 1992-01-17 00:41:53
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

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:764

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

File activity

The process %original file name%.exe:764 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%WinDir%\AppPatch\knpeacv.exe (1801 bytes)
%System%\config\software (2440 bytes)
%System%\config\SOFTWARE.LOG (5347 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\1.tmp (0 bytes)

Registry activity

The process %original file name%.exe:764 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4F 58 10 56 1D 24 1F 26 81 8D E6 62 83 72 E0 A5"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\%WinDir%\apppatch\knpeacv.exe_, \??\%WinDir%\apppatch\knpeacv.exe"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"a8a67a25" = "pEìX£bÀ¸¬qÄHF‡KöI÷c6²¡O$YÉ<»¹œ³ŒQ\´òd¼Œ¤Kô1,Å $ë›ÛÌ«”¹l}Ë {Å“zΙC%é[qñl4ì;û´[Ã’
#»Û:ÑU„„ԝ\±ª²Dƒuœ¡Ü¼);¼\ƒtµ2”kDù”a”*›cü$}Sô|ë$¤ô{¬q³#sÅå\yuJÛËu©|ù
¢rKã!$’‹‹b±ÃÄ£ãÍ‚“ÉUcdÁÄZ¡r»ô”)Û©Š]“QlYÛl]$$D´ƒÌ£Q$aŒ‚*â„¢ü›ÙóÍÁ=éÔÑщ¬
q9|áíù’‘íÁ©šÄR"

Network activity (URLs)

URL	IP
hxxp://50.116.56.144/login.php

HOSTS file anomalies

No changes have been detected.

Rootkit activity

The Trojan installs the following user-mode hooks in CRYPT32.dll:

CertVerifyCertificateChainPolicy

The Trojan installs the following user-mode hooks in WININET.dll:

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetWriteFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpSendRequestA
InternetCloseHandle

The Trojan installs the following user-mode hooks in USER32.dll:

GetWindowTextA
GetClipboardData
SendInput
GetMessageA
GetMessageW
TranslateMessage

The Trojan installs the following user-mode hooks in ADVAPI32.dll:

CryptEncrypt

The Trojan installs the following user-mode hooks in WS2_32.dll:

WSASend
recv
gethostbyname
WSARecv
send

The Trojan installs the following user-mode hooks in kernel32.dll:

CreateFileW

Propagation

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. Scan a system with an anti-rootkit tool.
   
2. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   %original file name%.exe:764

3. Delete the original Trojan file.
   
4. Delete or disinfect the following files created/modified by the Trojan:
   

   %WinDir%\AppPatch\knpeacv.exe (1801 bytes)
   %System%\config\software (2440 bytes)
   %System%\config\SOFTWARE.LOG (5347 bytes)

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Reboot the computer.
   

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