ELF_BASHLITE.SM
Linux/Dingle (McAfee), Backdoor.Trojan (Symantec), Backdoor.Linux.Gafgyt.a (Kaspersky), ELF/Gayfgt.A!tr (Fortinet), Linux/DDoS.M (ESET)
Linux, UNIX
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This malware is involved in the Bash Vulnerability Exploit attack of September 2014. It is capable of compromising an affected system's security by carrying out commands made by a malicious remote user. In the attack, it is utilized to perform distributed denial-of-service (DDoS) attacks as well as brute-forcing logins in order to steal login credentials.
This backdoor executes commands from a remote malicious user, effectively compromising the affected system.
TECHNICAL DETAILS
Varies
ELF
Yes
26 Sep 2014
Compromises system security, Connects to URLs/IPs
Arrival Details
This backdoor may be downloaded from the following remote site(s):
- http://{BLOCKED}.{BLOCKED}.66.76/nginx
This malware arrives via the following means:
Backdoor Routine
This backdoor executes the following commands from a remote malicious user:
- UDP - Perform UDP flooding
- TCP - Perform TCP flooding
- LOLNOGTFO - terminate botnet
- KILLATTK - terminate attack thread
- JUNK - Perform Junk Flooding
- HOLD - Pause or delay attack for specified duration
- GETLOCALIP - Get Local IP address
- PING
- SCANNER
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- {BLOCKED}2.{BLOCKED}3.66.76:53
- {BLOCKED}3.{BLOCKED}4.93.113:164
- {BLOCKED}9.{BLOCKED}8.150.154:5555
- {BLOCKED}.{BLOCKED}.150.154:5
NOTES:
It uses the following list of usernames and passwords to brute force login:
- 1234
- 12345
- 123456
- admin
- changeme
- default
- guest
- login
- pass
- password
- root
- toor
- user
It gathers the following information:
- CPU information (/proc/cpuinfo)
- Network information (/proc/net/route)
If the SCANNER command is ON, it executes the following:
- /bin/busybox;echo -e ‘gayfgt’\r\n
SOLUTION
9.700
Scan your computer with your Trend Micro product to delete files detected as ELF_BASHLITE.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.
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