BKDR_ANDROM.TF
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
60,416 bytes
EXE
03 Sep 2012
Arrival Details
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This backdoor drops the following copies of itself into the affected system:
- {All User's Profile}\Local Settings\Temp\ms{random characters}.{extension name}
- {All User's Profile}\svchost.exe
It injects codes into the following process(es):
- wuauclt.exe
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
SunJavaUpdateSched = "{All User's Profile}\svchost.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
{random number} = "{All User's Profile}\Local Settings\Temp\ms{random characters}.{extension name}"
Other Details
This backdoor connects to the following possibly malicious URL:
- http://{BLOCKED}d.pl/image.php
- http://{BLOCKED}a.pl/image.php
- http://{BLOCKED}e.pl/image.php
- http://{BLOCKED}m.ru/image.php
- http://{BLOCKED}ge.com/image.php
NOTES:
Where {extension name} is any of the following:
- BAT
- CMD
- COM
- EXE
- PIF
- SCR