IoT.Linux.MIRAI.VWISI
Unix
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This new Mirai variant exploits CVE-2020-10173, a vulnerability in Comtrend VR-3033 routers. Similar to earlier variants, this Mirai variant uses telnet and SSH brute-forcing techniques to attack vulnerable devices.
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
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 connects to the following URL(s) to send and receive commands from a remote malicious user:
- methcnc.{BLOCKED}s.org
- methscan.{BLOCKED}s.org
Denial of Service (DoS) Attack
This Backdoor is capable of performing various network denial-of-service (DoS) attacks:
Other Details
This Backdoor does the following:
- It uses the following credentials to try to login to other devices:
- taZz@23495859
- root
- tsgoingon
- solokey
- admin
- default
- user
- guest
- telnetadmin
- 1111
- 1234
- 12345
- 123456
- 54321
- 88888888
- 20080826
- 666666
- 1001chin
- xc3511
- vizxv
- 5up
- jvbzd
- hg2x0
- Zte521
- grouter
- telnet
- oelinux123
- tl789
- GM8182
- hunt5759
- telecomadmin
- twe8ehome
- h3c
- nmgx_wapia
- private
- abc123
- ROOT500
- ahetzip8
- anko
- ascend
- blender
- cat1029
- changeme
- iDirect
- nflection
- ipcam_rt5350
- swsbzkgn
- juantech
- pass
- password
- svgodie
- t0talc0ntr0l4!
- zhongxing
- zlxx.
- zsun1188
- xmhdipc
- klv123
- hi3518
- dreambox
- system
- iwkb
- realtek
- 00000000
- huigu309
- win1dows
- antslq
- It displays the following string once executed in the command line:
- unstableishere
- It may spread to other devices by taking advantage of the following vulnerabilities:
- Symantec Web Gateway 5.0.2.8 - Remote Code Execution
- D-Link Devices - UPnP SOAP Command Execution
- Linksys E-series - Remote Code Execution
- AVTECH IP Camera / NVR / DVR Devices - Multiple Vulnerabilities
- MVPower DVR TV-7104HE 1.8.4 115215B9 - Shell Command Execution
- CVE-2018-17173| LG SuperSign EZ CMS 2.5 - Remote Code Execution
- ThinkPHP 5.0.23/5.1.31 - Remote Code Execution
- Netlink GPON Router 1.0.11 - Remote Code Execution
- CVE-2020-10173 | Comtrend VR-3033 - Command Injection
SOLUTION
Scan your computer with your Trend Micro product to delete files detected as IoT.Linux.MIRAI.VWISI. 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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