TROJ_JORIK.EEG
ERROR (Microsoft); Trojan-FBEG!632AD7005B98 (McAfee); Trojan.Win32.Jorik.Zegost.pit (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse SHeur4.BALX (AVG)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
249,509 bytes
EXE
Yes
14 Apr 2013
Arrival Details
This Trojan 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 Trojan drops the following copies of itself into the affected system:
- %Program Files%\Ruuoww szuou\serve.exe
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
It creates the following folders:
- %Program Files%\Ruuoww szuou
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
Autostart Technique
This Trojan registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Rueyjy ncesccoi
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Utwaaa aaaaaa
Other System Modifications
This Trojan adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Rueyjy ncesccoi
ReleiceName = "Utwaaa aaaaaa"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Utwaaa aaaaaa
ConnectGroup = "ĬÈÏ·Ö×é"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Utwaaa aaaaaa
MarkTime = "2013-04-06 23:46"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Utwaaa aaaaaa
Description = "Ayskmq apbyaaox caabfmaacoi"
Dropping Routine
This Trojan drops the following files:
- %System Root%\7706.vbs
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
This report is generated via an automated analysis system.
SOLUTION
9.300
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Restart in Safe Mode
Step 3
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- Rueyjy ncesccoi
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- Utwaaa aaaaaa
Step 4
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Rueyjy ncesccoi
- ReleiceName = "Utwaaa aaaaaa"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Utwaaa aaaaaa
- ConnectGroup = "ĬÈÏ·Ö×é"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Utwaaa aaaaaa
- MarkTime = "2013-04-06 23:46"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Utwaaa aaaaaa
- Description = "Ayskmq apbyaaox caabfmaacoi"
Step 5
Search and delete this file
- %System Root%\7706.vbs
Step 6
Search and delete this folder
- %Program Files%\Ruuoww szuou
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_JORIK.EEG. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
Did this description help? Tell us how we did.