Analysis
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max time kernel
87s -
max time network
153s -
platform
ubuntu-18.04_amd64 -
resource
ubuntu1804-amd64-20231221-en -
resource tags
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submitted
13/02/2024, 05:23
General
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Target
cf1b85d4812f7ee052666276a184b481368f0c0c7a43e6d5df903535f466c5fd.elf
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Size
33KB
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MD5
1fa25a704d6be67b041b62c02dd2b9f7
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SHA1
ee840fe5aaf7a32eebb972ef043ada01ed586da1
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SHA256
cf1b85d4812f7ee052666276a184b481368f0c0c7a43e6d5df903535f466c5fd
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SHA512
57634cff1fc944341e97deebca79e6cf36f09578a987aa16b5d87a4feb9f19317269651f74d001d220aacebc940aade7a4c16e1cb0c6f29f945bd382d10b4c3a
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SSDEEP
768:DkT3a5lElCF5CIpadEKUrJqxsk3JS2aEcCYeAAy3t3dGbpBcsX:4T30ElCPvp/7EkeLYtNwBX
Malware Config
Extracted
mirai
MIRAI
Signatures
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Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
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Contacts a large (73299) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Changes its process name 1 IoCs
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Deletes Audit logs 1 TTPs 1 IoCs
Deletes logs related to the Linux Audit framework.
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Deletes itself 1 IoCs
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Deletes journal logs 1 TTPs 1 IoCs
Deletes systemd journal logs. Likely to evade detection.
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Deletes system logs 1 TTPs 1 IoCs
Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.
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Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
Processes
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/tmp/cf1b85d4812f7ee052666276a184b481368f0c0c7a43e6d5df903535f466c5fd.elf/tmp/cf1b85d4812f7ee052666276a184b481368f0c0c7a43e6d5df903535f466c5fd.elf1⤵
- Changes its process name
- Deletes itself
- Modifies Watchdog functionality