BKDR_ANDROM.YYKS
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
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.
Dropping Routine
This backdoor drops the following files:
- %User Temp%\3.tmp
- %User Temp%\6.tmp
- %User Temp%\9.tmp
- %User Temp%\C.tmp
- %User Temp%\F.tmp
- %User Temp%\12.tmp
- %User Temp%\15.tmp
- %User Temp%\18.tmp
- %User Temp%\1B.tmp
- %User Temp%\1E.tmp
- %User Temp%\21.tmp
- %User Temp%\24.tmp
- %User Temp%\27.tmp
(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 backdoor connects to the following possibly malicious URL:
- http://{BLOCKED}d.com
- {BLOCKED}5.122.74
- {BLOCKED}7.15.167
- {BLOCKED}215.130
- {BLOCKED}.98.149
- {BLOCKED}.128.166
- {BLOCKED}211.93
- {BLOCKED}.214.100
- {BLOCKED}.142.5
- {BLOCKED}.45.27
- {BLOCKED}3.0.98
- {BLOCKED}8.192.12
- {BLOCKED}135.250
- {BLOCKED}.23.135
This report is generated via an automated analysis system.
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 components
- %User Temp%\3.tmp
- %User Temp%\6.tmp
- %User Temp%\9.tmp
- %User Temp%\C.tmp
- %User Temp%\F.tmp
- %User Temp%\12.tmp
- %User Temp%\15.tmp
- %User Temp%\18.tmp
- %User Temp%\1B.tmp
- %User Temp%\1E.tmp
- %User Temp%\21.tmp
- %User Temp%\24.tmp
- %User Temp%\27.tmp
Step 3
Scan your computer with your Trend Micro product to delete files detected as BKDR_ANDROM.YYKS. 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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