RTKT_BLACKEN.C
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Rootkit
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This malware is related to the recent BlackEnergy targeted attacks that affected industries in Ukraine.
To get a one-glance comprehensive view of the behavior of this Rootkit, refer to the Threat Diagram shown below.
![](https://documents.trendmicro.com/images/rtkt_blacken_c.jpg)
This rootkit 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
Arrival Details
This rootkit arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Download Routine
This rootkit accesses the following websites to download files:
- https://{BLOCKED}.{BLOCKED}.111.154/Microsoft/Update/KS081274.php
- https://{BLOCKED}.{BLOCKED}.25.92/fHKfvEhleQ/maincraft/derstatus.php
- https://{BLOCKED}.{BLOCKED}.32.230/Microsoft/Update/KS1945777.php
It saves the files it downloads using the following names:
- %System%\ieapflrt.dat
- %System%\drivers\nlang.dat
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Information Theft
This rootkit gathers the following data:
- computer name
- ID
- build id
SOLUTION
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
Search and delete these files
- %System%\ieapflrt.dat
- %System%\drivers\nlang.dat
Step 3
Scan your computer with your Trend Micro product to delete files detected as RTKT_BLACKEN.C. 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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