MD5: ccfbbcc3bec3940ac47166fc4c173840
SHA1: a9829c2f943ad7444ecdea9549dc56e2cd5eea57
SHA256: 2291c71e19cc9b62bc640fbff2956cf08cbcff822491da36191086bbdadb591c
SSDeep: 6144:xfTfFpAclBlUDgKNLdQwiDPYBOLpVhF1vA7B2PCKNrZ:9DMD74PYBOLZkBrKN
Size: 265216 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2005-04-21 13:15:19
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:2428

The Trojan injects its code into the following process(es):

ctfmon.exe:252

File activity

The process %original file name%.exe:2428 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%WinDir%\AppPatch\crvmlq.exe (1955 bytes)
%System%\config\software (3186 bytes)
%System%\config\software.LOG (5580 bytes)

The Trojan deletes the following file(s):

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

Registry activity

The process ctfmon.exe:252 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

The Trojan deletes the following value(s) in system registry:
The Trojan disables automatic startup of the application by deleting the following autorun value:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"

The process %original file name%.exe:2428 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1B 6F 53 EC ED 4A 4C 75 48 11 93 48 32 30 92 D1"

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

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"d8cc41db" = "CêkæÚ`Ã¥D 5õÔPï[O©e&e4¹à”¸a4d‚\yìqA}(Äé¼ü4|Âá@
”°™,¡¤üHrѼ©€©”´D0}éiXª¸|Èy4¡RYÑúièmÑ
©È„IáØð±¼(¤ ádIÚبìd˜ XYâÀeœiü¥AšIi¸r¥(¡A\y 9€éñ$ZÔaxÙ9

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:

HttpSendRequestExW
HttpSendRequestExA
InternetReadFileExA
InternetReadFileExW
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
InternetCloseHandle
InternetReadFile

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:2428

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

   %WinDir%\AppPatch\crvmlq.exe (1955 bytes)
   %System%\config\software (3186 bytes)
   %System%\config\software.LOG (5580 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.