WORM_HARAKIT.S
Worm:Win32/Renocide (Microsoft); Worm.Win32.AutoIt.xl (Kaspersky)
Windows
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
Arrival Details
This worm 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 worm drops the following copies of itself into the affected system and executes them:
- %System%\csrcs.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It drops the following files:
- {drive letter}\jiyt
- %User Temp%\aut{random number}.tmp
- %User Temp%\{random char}
- %User Temp%\suicide.bat
- %System%\autorun.inf
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Autostart Technique
This worm adds the following registry entries to enable its automatic execution at every system startup:
HKLM\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
csrcs = %System%\csrcs.exe
Other Details
This worm connects to the following possibly malicious URL:
- eet.{BLOCKED}su.com:5300/po.php
- eet.{BLOCKED}su.com:5300/banner.gif
- juytolp.{BLOCKED}e.hm:5400/banner.gif
- kiu.{BLOCKED}atama.com:4600/banner.gif
It deletes itself after execution.