JS_NEMUCOD.DLDUJ
TrojanDownloader:JS/Nemucod (Microsoft), JS/Nemucod.in (McAfee)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
TECHNICAL DETAILS
Arrival Details
This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.
Installation
This Trojan drops the following files:
- Any of the following:
- %User Temp%\suckit.bat
- %User Temp%\suc11.05.2016kit.bat
(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.)
Download Routine
This Trojan saves the files it downloads using the following names:
- Any of the following:
- %User Temp%\jybOVlVWZEA0cT8.exe
- %User Temp%\IgVCpC.exe
- %User Temp%\RAvrFE.exe
- %User Temp%\HIOIY2aNvjZytV.exe
(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.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}adirect.com/lw0old
- http://{BLOCKED}l.za.pl/8977g78bi
- http://www.{BLOCKED}dgearchitects.com/8977g78bi
- http://{BLOCKED}aqeem.com/khd4bf