BKDR_IRCBOT.SMRP
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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
Varies
EXE
Yes
08 Mar 2013
Compromises system security, Connects to URLs/IPs
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 adds the following mutexes to ensure that only one of its copies runs at any one time:
- evil1loldild0s
Autostart Technique
This backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Wincpa or Windongs = "{Malware Path and File Name}"
Backdoor Routine
This backdoor connects to any of the following IRC server(s):
- {BLOCKED}.{BLOCKED}.249.189:443
- epic.{BLOCKED}es.xxx
It joins any of the following IRC channel(s):
- #test3
- #test5
- #test4
It accesses a remote Internet Relay Chat (IRC) server where it receives the following commands from a remote malicious user:
- (DOWNLOAD) - Downloads and execute arbitrary file
- (EXEC) - Executes command
- (GET) - Sends GET floods
- (HELP) - Print Commands
- (OPENURL) - Opens a URL using a hidden browser
- (POST) - Sends POST floods
- (QUIT) - Terminate itself
- (SHELL EXEC) - Executes shell command
- (SPEEDTEST) - check connection speed (rolotech-electronics.comuf.com, speedtest1.hivelocity.net, 68.11.12.242)
- (STOP EXEC) - Stops a thread
- (STOP GET) - Stops GET floods
- (STOP SPEEDTEST) - Stops speedtest
- (STOP SYN) - Stops a SYN Flood
- (STOP UDP) - Stops UDP Flooding
- (SYN) - Sends a SYN Flood
- (UDP) - Starts UDP Flooding
- (VERSION) - Print Version
Other Details
This backdoor uses the following credentials when accessing its IRC server:
- USERNAME: zwin-{random}
- PASSWORD: Op Dildos / dildos
NOTES:
This backdoor connects to the following sites to perform a speed test:
- http://{BLOCKED}est1.hivelocity.net/speedtest/upload.php?x={random value}
- http://{BLOCKED}.{BLOCKED}.12.242/speedtest/upload.php?x={random value}
- http://{BLOCKED}ch-electronics.comuf.com/speedtest/upload.php?x={random value}
SOLUTION
9.300
9.774.08
08 Mar 2013
9.775.00
09 Mar 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
Scan your computer with your Trend Micro product and note files detected as BKDR_IRCBOT.SMRP
Step 3
Terminate a process file/s detected as BKDR_IRCBOT.SMRP
*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.
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
- Wincpa or Windongs = "{Malware Path and File Name}"
- Wincpa or Windongs = "{Malware Path and File Name}"
Step 5
Scan your computer with your Trend Micro product to delete files detected as BKDR_IRCBOT.SMRP. 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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