Analysis
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max time kernel
69s -
max time network
148s -
platform
debian-9_mipsel -
resource
debian9-mipsel-20240611-en -
resource tags
arch:mipselimage:debian9-mipsel-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem -
submitted
10-10-2024 06:54
Static task
static1
Behavioral task
behavioral1
Sample
na.elf
Resource
debian9-mipsel-20240611-en
General
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Target
na.elf
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Size
125KB
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MD5
2b0caf52e5e7d8967ce6ad262f194966
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SHA1
71cef25f6bc45bdecd8ba77ec5c18a7795cc4bd4
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SHA256
26a240e366d95b7fd6b58e1ac79304334b30a910415a224c31f585f7b49cfaa2
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SHA512
b5d037a7caeeeabbcfc05a9b62c12622870f6d61a3b916ac80f61b0eab22dc274df7d02e8c4ff7334dc9074c17307c4a52ca8c38f1ff1c89f58f7f1ccea7b52d
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SSDEEP
1536:AmbdXGuJxQ1lmoGWGO/+9MBLVKvyPXgQXE9ZTUdY7oew11S07HI:A4XBJxQT5Ge/+ubgYE9G+fwnS07
Malware Config
Signatures
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Contacts a large (40810) 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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Deletes system logs 1 TTPs 2 IoCs
Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.
Processes:
na.elfdescription ioc Process File deleted /var/log/syslog na.elf File deleted /var/log/messages na.elf -
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
Processes:
na.elfdescription ioc Process File opened for modification /dev/watchdog na.elf File opened for modification /dev/misc/watchdog na.elf -
Renames itself 1 IoCs
Processes:
na.elfpid Process 704 na.elf -
Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 130.61.69.123 Destination IP 108.165.48.201 -
Processes:
na.elfdescription ioc Process File deleted /var/log/kern.log na.elf File deleted /var/log/daemon.log na.elf -
Reads process memory 1 TTPs 1 IoCs
Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.
Processes:
na.elfdescription ioc Process File opened for reading /proc/1/maps na.elf -
Changes its process name 1 IoCs
Processes:
na.elfdescription ioc pid Process Changes the process name, possibly in an attempt to hide itself /sbin/udhcpc 704 na.elf