Backdoor.Linux.BASHLITE.AMW
HEUR:Backdoor.Linux.Gafgyt.a (Kaspersky), DDoS:Linux/Lightaidra!rfn (Microsoft)
Linux
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet
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.
It executes commands from a remote malicious user, effectively compromising the affected system.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
150,889 bytes
ELF
Yes
25 Mar 2019
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.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- PINGING - checks connection with C&C
- ECHOSCAN OFF/ON - scan and infects telnet ports with weak credentials
- OELINUX123 OFF/ON - similar to ECHOSCAN
- CFBYPASS - bypasses CloudFlare Protection
- HOLD - stops any DDOS module
- GRENADE - launches all DDOS module
- JUNK - sends randomly generated strings
- VSE - sends spoofed queries and/or connection attempts
- ACK - ACK flood
- UDP - UDP flood
- TCP - TCP flood
- OVH - OVH flood an anti-DDOS web service
- STD - Does the following routine/command
- Bricker - downloads and executes bricker
- MINER - downloads and exercutes miner
- PKILL - kills a specified process
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- {BLOCKED}.{BLOCKED}.25.213:3437
Other Details
This Backdoor does the following:
- It uses the following credentials to try to login to other machines:
- Username:
- root
- admin
- Password:
- root
- admin
- admin123
- huigu309
- xc3511
- vizxv
- Username:
- It is capable of dropping downloader binaries depending on the system architecture.
The dropped binary accesses the following URL to download its payload:- {BLOCKED}.{BLOCKED}.185.250/hakai.{architecture}
where {architecture} is any of the following:- arm
- arm7
- m68k
- mips
- mpsl
- ppc
- sh4
- spc
- x86
- x86_64
- {BLOCKED}.{BLOCKED}.185.250/hakai.{architecture}
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.850
15.298.04
14 Aug 2019
15.299.00
15 Aug 2019
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Linux.BASHLITE.AMW. 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 the following Trend Micro Support pages for more information:
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