MD5: bf036ecb6680508136a12cc871c84094
SHA1: 5aa15b96d5ac48f0642e095ae9bcc1956467cf11
SHA256: 76349d730b6adefd0f1160de304486597a6d2adaf062288f7cdcb881295bf891
SSDeep: 6144:ty28yXQdGOXKRtvRA18Ol2/aBwqR5JsPw0djmLO1n 428AcoxCOc7pXDTBBgiLsI:pNvvRKrl2/m10dRn SfmqZ0iLs4tRmk
Size: 492320 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2012-10-04 17:16:09
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

Process activity

The Trojan creates the following process(es):

9DDCFF4D456.exe:1260
9DDCFF4D456.exe:136
%original file name%.exe:260

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

File activity

The process 9DDCFF4D456.exe:136 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\winsys\93227EE31258962 (1649 bytes)

Registry activity

The process 9DDCFF4D456.exe:1260 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"(Default)" = ""

The process 9DDCFF4D456.exe:136 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "45 FA 04 A7 05 F2 0E 37 89 1B 66 A3 91 DE 00 FB"

The process %original file name%.exe:260 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"(Default)" = ""

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestW
InternetReadFileExA
InternetWriteFile
InternetQueryDataAvailable
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle
HttpAddRequestHeadersA
HttpOpenRequestA
InternetQueryOptionA

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

TranslateMessage

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

PFXImportCertStore

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

CryptEncrypt

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

send

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

NtVdmControl
ZwSetInformationFile
NtResumeThread
NtQueryDirectoryFile
NtEnumerateValueKey

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

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):
   

   9DDCFF4D456.exe:1260
   9DDCFF4D456.exe:136
   %original file name%.exe:260

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

   C:\winsys\93227EE31258962 (1649 bytes)

5. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "(Default)" = ""
   
   

6. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
7. Reboot the computer.
   

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