TROJ_RIMOD.MJSN
Trojan:Win32/Rimod (Microsoft); Sdbot-FOR!CA4ADAF7B0DB (McAfee); W32.IRCBot.NG (Symantec); Trojan.Win32.Jorik.IRCbot.vyi (Kaspersky); Mal/Inject-CEE (Sophos); Backdoor.IRCBot (Sunbelt); Found Win32/DH.FF8200BA{NA} (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
205,824 bytes
EXE
Yes
30 Apr 2014
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:
- %User Profile%\ZZZZZCertifieded\_ZZZZZ.exe
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It creates the following folders:
- %User Profile%\Microsoft\ZZZZZCertifieded
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Adobe Flash Accelerator = "%User Profile%\ZZZZZCertifieded\_ZZZZZ.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Adobe Flash Accelerator = "%User Profile%\ZZZZZCertifieded\_ZZZZZ.exe"
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
WinMediaPlayer
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
AnalogWindowsTime
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
showsuperhidden = "0"
HKEY_CURRENT_USER\Software\Microsoft\
AnalogWindowsTime
Age = "46_1_49"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\SuperHidden
UncheckedValue = "0"
(Note: The default value data of the said registry entry is 1.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://api.{BLOCKED}ia.com
- {BLOCKED}.137.58
- {BLOCKED}.117.126
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_CURRENT_USER\SOFTWARE\Microsoft
- WinMediaPlayer
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft
- AnalogWindowsTime
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\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- Adobe Flash Accelerator = "%User Profile%\ZZZZZCertifieded\_ZZZZZ.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Adobe Flash Accelerator = "%User Profile%\ZZZZZCertifieded\_ZZZZZ.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- showsuperhidden = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\AnalogWindowsTime
- Age = "46_1_49"
Step 5
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\SuperHidden
- From: UncheckedValue = "0"
To: UncheckedValue = ""1""
- From: UncheckedValue = "0"
Step 6
Search and delete this folder
- %User Profile%\Microsoft\ZZZZZCertifieded
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_RIMOD.MJSN. 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.
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