ELF_XORDDOS.TNN
LINUX/Xorddos.uxfdn (Avira); Linux/DDoS-BH (Sophos); ELF:Xorddos-AD [Trj] (Avast); Linux/DDoS.XOR.16 (AVG)
Linux
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
255,852 bytes
ELF
Yes
16 Mar 2017
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 drops the following files:
- /usr/bin/{random 10 characters}
- /bin/{random 10 characters}
- /tmp/{random 10 characters}
- /etc/cron.hourly/gcc4.sh
It drops the following copies of itself into the affected system:
- /lib/libudev4.so
Other Details
This Backdoor connects to the following possibly malicious URL:
- {BLOCKED}.{BLOCKED}.114.114 (dns.{BLOCKED}g.top)
- {BLOCKED}.{BLOCKED}.76.252:6552
SOLUTION
9.850
13.280.06
16 Mar 2017
13.281.00
17 Mar 2017
Scan your computer with your Trend Micro product to delete files detected as ELF_XORDDOS.TNN. 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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