General
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Target
task2.bin.elf
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Size
611KB
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Sample
230406-ncbssaef5z
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MD5
12fecefe30f2ad8f49aae67b92920adc
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SHA1
1bba1ff3c667a41ae26b12995323f7df7c239173
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SHA256
c0b0225201fd3a4c08245e58bbb4b844e0d3426e89b9ac3fc34db37d994fb182
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SHA512
71cd6c7490c62629774ffc31ac2cbe3074949b7b7d1445044d1be649b8893c59a45930c813939c2af95bc91612bfad7e4fe301ec6a96012ea5a6e8caa0d344c0
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SSDEEP
12288:5BXOvdwV1/n/dQFhWlH/c1dHo4h9L+zNZrrIT6yF8EEP4UlUuTh1Au:5BXmkN/+Fhu/Qo4h9L+zNNIBVEBl/91l
Behavioral task
behavioral1
Sample
task2.bin.elf
Resource
ubuntu1804-amd64-en-20211208
Malware Config
Extracted
xorddos
http://aaa.dsaj2a.org/config.rar
ww.dnstells.com:53
ww.gzcfr5axf6.com:53
ww.gzcfr5axf7.com:53
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crc_polynomial
EDB88320
Targets
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Target
task2.bin.elf
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Size
611KB
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MD5
12fecefe30f2ad8f49aae67b92920adc
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SHA1
1bba1ff3c667a41ae26b12995323f7df7c239173
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SHA256
c0b0225201fd3a4c08245e58bbb4b844e0d3426e89b9ac3fc34db37d994fb182
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SHA512
71cd6c7490c62629774ffc31ac2cbe3074949b7b7d1445044d1be649b8893c59a45930c813939c2af95bc91612bfad7e4fe301ec6a96012ea5a6e8caa0d344c0
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SSDEEP
12288:5BXOvdwV1/n/dQFhWlH/c1dHo4h9L+zNZrrIT6yF8EEP4UlUuTh1Au:5BXmkN/+Fhu/Qo4h9L+zNNIBVEBl/91l
Score9/10-
Writes file to system bin folder
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Creates/modifies Cron job
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Write file to user bin folder
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Reads runtime system information
Reads data from /proc virtual filesystem.
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Writes file to tmp directory
Malware often drops required files in the /tmp directory.
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