Analysis
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max time kernel
152s -
max time network
152s -
platform
linux_armhf -
resource
debian9-armhf-en-20211208 -
resource tags
arch:armhfimage:debian9-armhf-en-20211208kernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem -
submitted
30-06-2023 12:26
Static task
static1
Behavioral task
behavioral1
Sample
.i
Resource
debian9-armhf-en-20211208
General
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Target
.i
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Size
78KB
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MD5
9b6c3518a91d23ed77504b5416bfb5b3
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SHA1
0a2d170abbf5031566377b01431e3b82d342630a
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SHA256
a04ac6d98ad989312783d4fe3456c53730b212c79a426fb215708b6c6daa3de3
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SHA512
b2b08d5d5e6c6708d88b793e9340a780d47b5dce61e0a3026b4cdea8a9e4cbf9824037255e4ea4a40fee5bce956485232376d4677ce72ccb6c7f00badd09956e
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SSDEEP
1536:87vbq1lGAXSEYQjbChaAU2yU23M51DjZgSQAvcYkFtZTjzBht5:8D+CAXFYQChaAUk5ljnQssL
Malware Config
Signatures
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Changes its process name 1 IoCs
Processes:
shdescription ioc pid process Changes the process name, possibly in an attempt to hide itself telnetd 360 sh -
Deletes itself 1 IoCs
Processes:
shpid process 360 sh -
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
Processes:
.idescription ioc process File opened for modification /dev/watchdog .i File opened for modification /dev/misc/watchdog .i -
Enumerates active TCP sockets 1 TTPs 1 IoCs
Gets active TCP sockets from /proc virtual filesystem.
Processes:
description ioc File opened for reading /proc/net/tcp -
Enumerates running processes
Discovers information about currently running processes on the system
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Reads system routing table 1 TTPs 1 IoCs
Gets active network interfaces from /proc virtual filesystem.
Processes:
.idescription ioc process File opened for reading /proc/net/route .i -
Reads system network configuration 1 TTPs 3 IoCs
Uses contents of /proc filesystem to enumerate network settings.
Processes:
.idescription ioc process File opened for reading /proc/net/route .i File opened for reading /proc/net/tcp File opened for reading /proc/net/tcp6 -
Reads runtime system information 64 IoCs
Reads data from /proc virtual filesystem.
Processes:
description ioc File opened for reading /proc/113/cmdline File opened for reading /proc/7/cmdline File opened for reading /proc/291/fd File opened for reading /proc/279/cmdline File opened for reading /proc/234/cmdline File opened for reading /proc/23/cmdline File opened for reading /proc/18/cmdline File opened for reading /proc/8/cmdline File opened for reading /proc/139/cmdline File opened for reading /proc/80/cmdline File opened for reading /proc/24/cmdline File opened for reading /proc/19/cmdline File opened for reading /proc/12/cmdline File opened for reading /proc/3/cmdline File opened for reading /proc/360/cmdline File opened for reading /proc/358/fd File opened for reading /proc/6/cmdline File opened for reading /proc/314/fd File opened for reading /proc/169/fd File opened for reading /proc/25/cmdline File opened for reading /proc/16/cmdline File opened for reading /proc/10/cmdline File opened for reading /proc/283/fd File opened for reading /proc/4/cmdline File opened for reading /proc/352/cmdline File opened for reading /proc/315/cmdline File opened for reading /proc/169/cmdline File opened for reading /proc/112/cmdline File opened for reading /proc/110/cmdline File opened for reading /proc/9/cmdline File opened for reading /proc/5/cmdline File opened for reading /proc/352/fd File opened for reading /proc/312/fd File opened for reading /proc/217/fd File opened for reading /proc/43/cmdline File opened for reading /proc/1/fd File opened for reading /proc/312/cmdline File opened for reading /proc/308/fd File opened for reading /proc/157/cmdline File opened for reading /proc/152/cmdline File opened for reading /proc/42/cmdline File opened for reading /proc/17/cmdline File opened for reading /proc/2/cmdline File opened for reading /proc/11/cmdline File opened for reading /proc/357/cmdline File opened for reading /proc/356/cmdline File opened for reading /proc/315/fd File opened for reading /proc/314/cmdline File opened for reading /proc/283/cmdline File opened for reading /proc/233/cmdline File opened for reading /proc/41/cmdline File opened for reading /proc/279/fd File opened for reading /proc/217/cmdline File opened for reading /proc/28/cmdline File opened for reading /proc/13/cmdline File opened for reading /proc/210/cmdline File opened for reading /proc/358/cmdline File opened for reading /proc/280/cmdline File opened for reading /proc/280/fd File opened for reading /proc/238/fd File opened for reading /proc/236/cmdline File opened for reading /proc/236/fd File opened for reading /proc/234/fd File opened for reading /proc/22/cmdline -
Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.
Processes:
description ioc File opened for modification /tmp/fifo
Processes
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/tmp/.i/tmp/.i1⤵
- Modifies Watchdog functionality
- Reads system routing table
- Reads system network configuration
PID:359
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/bin/sh/bin/sh -c "iptables -A INPUT -p tcp --destination-port 23 -j DROP"1⤵
- Changes its process name
- Deletes itself
PID:364 -
/sbin/iptablesiptables -A INPUT -p tcp --destination-port 23 -j DROP2⤵PID:365
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/bin/sh/bin/sh -c "iptables -A INPUT -p tcp --destination-port 7547 -j DROP"1⤵PID:371
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/sbin/iptablesiptables -A INPUT -p tcp --destination-port 7547 -j DROP2⤵PID:372
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/bin/sh/bin/sh -c "iptables -A INPUT -p tcp --destination-port 5555 -j DROP"1⤵PID:373
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/sbin/iptablesiptables -A INPUT -p tcp --destination-port 5555 -j DROP2⤵PID:374
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/bin/sh/bin/sh -c "iptables -A INPUT -p tcp --destination-port 5358 -j DROP"1⤵PID:375
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/sbin/iptablesiptables -A INPUT -p tcp --destination-port 5358 -j DROP2⤵PID:376
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/bin/sh/bin/sh -c "iptables -D INPUT -j CWMP_CR"1⤵PID:377
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/sbin/iptablesiptables -D INPUT -j CWMP_CR2⤵PID:378
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/bin/sh/bin/sh -c "iptables -X CWMP_CR"1⤵PID:379
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/sbin/iptablesiptables -X CWMP_CR2⤵PID:380
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/bin/sh/bin/sh -c "iptables -I INPUT -p udp --dport 36918 -j ACCEPT"1⤵PID:381
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/sbin/iptablesiptables -I INPUT -p udp --dport 36918 -j ACCEPT2⤵PID:382