- Threat Encyclopedia
- Malware
- BKDR_EVILOGE.SM
W32/Wmonder.A!tr (Fortinet),
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Dropped by other malware
This malware was used in the EvilGrab campaign, which targets victims in Japan and China.
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.
It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.
It retrieves specific information from the affected system.
It deletes the initially executed copy of itself.
Varies
EXE
Yes
02 Aug 2013
Steals information, Terminates processes, Collects system information
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:
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It adds the following processes:
It creates the following folders:
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It stays memory-resident by injecting codes into the following processes:
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
UKey = "%Application Data%\360\Live360.exe"
Other System Modifications
This backdoor adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\rar
HKEY_CURRENT_USER\Software\rar
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\rar
data = "{random characters}"
HKEY_LOCAL_MACHINE\SOFTWARE\rar
s = "{random characters}"
HKEY_LOCAL_MACHINE\SOFTWARE\rar
ActiveSettings = "{random characters}"
Backdoor Routine
This backdoor executes the following commands from a remote malicious user:
It connects to the following websites to send and receive information:
Process Termination
This backdoor terminates processes or services that contain any of the following strings if found running in the affected system's memory:
Dropping Routine
This backdoor drops the following file(s), which it uses for its keylogging routine:
(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.)
Information Theft
This backdoor retrieves the following information from the affected system:
Other Details
This backdoor deletes the initially executed copy of itself
NOTES:
It decrypts two .DLL files in memory which it injects to its created instance of svchost.exe.
It attempts to steal all memory related to Tencent QQ, a Chinese instant messaging application. This includes conversations of the user's contacts in QQ.
9.700
10.192.06
02 Aug 2013
10.193.00
03 Aug 2013
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.
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.
Step 5
Search and delete these folders
Step 6
Search and delete these files
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_EVILOGE.SM. 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.