Analysis
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max time kernel
22128s -
max time network
156s -
platform
linux_amd64 -
resource
ubuntu-amd64 -
submitted
02-08-2021 18:37
Static task
static1
Behavioral task
behavioral1
Sample
Linux.Encryptor
Resource
ubuntu-amd64
Behavioral task
behavioral2
Sample
Linux.Encryptor
Resource
debian9-mipsel
Behavioral task
behavioral3
Sample
Linux.Encryptor
Resource
debian9-mipsbe
General
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Target
Linux.Encryptor
-
Size
2.0MB
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MD5
3f9a28e8c057e7ea7ccf15a4db81f362
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SHA1
10d6d3c957facf06098771bf409b9593eea58c75
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SHA256
6a7b7147fea63d77368c73cef205eb75d16ef209a246b05698358a28fd16e502
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SHA512
58a71aeac247d206f023ee29aff81026881e41d3fbd268f7513e3bcd951701a68502361dd717befa79a094eb9fc0caaa9f8770ba83f5c94a8acb9ae0986ee386
Malware Config
Signatures
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Deletes system logs 1 TTPs 6 IoCs
Processes:
description ioc /var/log/installer/cdebconf /var/log/installer/cdebconf /var/log/dist-upgrade /var/log/dist-upgrade /var/log/journal /var/log/journal /var/log/journal/a44f0fe52e404b679b7b2c5bbcd8d157 /var/log/journal/a44f0fe52e404b679b7b2c5bbcd8d157 /var/log/apt /var/log/apt /var/log/installer /var/log/installer -
Modifies hosts file 1 IoCs
Adds to hosts file used for mapping hosts to IP addresses.
Processes:
description ioc /etc/hosts /etc/hosts -
Writes DNS configuration 1 TTPs 1 IoCs
Writes data to DNS resolver config file.
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Creates/modifies Cron job 1 TTPs 1 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
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Reads CPU attributes 1 TTPs 1 IoCs
Processes:
description ioc /sys/devices/system/cpu/online /sys/devices/system/cpu/online -
Writes file to tmp directory 3 IoCs
Malware often drops required files in the /tmp directory.
Processes:
Linux.Encryptordescription ioc Process /tmp/.DBFD055C-9CF2-4BB8-908E-6DA22321BF17 /tmp/.DBFD055C-9CF2-4BB8-908E-6DA22321BF17 Linux.Encryptor /tmp/main.log /tmp/main.log