Analysis
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max time kernel
124s -
max time network
155s -
platform
debian-9_mipsel -
resource
debian9-mipsel-20240226-en -
resource tags
arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem -
submitted
31-10-2024 23:31
Behavioral task
behavioral1
Sample
linux_mipsel_softfloat.elf
Resource
debian9-mipsel-20240226-en
General
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Target
linux_mipsel_softfloat.elf
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Size
5.6MB
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MD5
ad1e0eac7b5a21d48787c13116526ff6
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SHA1
cdd1a9a416f8c6ffa4dc70638990376695fafbf0
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SHA256
2ea79246ca36e0bfd5c1968d4344d2b74e3c230be19867732968d63577084f06
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SHA512
e32c24f20f66e2945eff0fbe0dc17bf9850a22455b4d4f272008cc40587ec57995c53e6ce7c046271c4c33faf5e424d53676590ad5e21d22061c39ba48dd6c4c
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SSDEEP
49152:+RxVVRFMTwrupkYzfgh7rxQ2USaU85Jbq1rQcR6VYv0VF1:
Malware Config
Signatures
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Kaiji 1 IoCs
Kaiji payload
Processes:
resource yara_rule /etc/id.services.conf Kaiji -
Kaiji family
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kaiji_chaosbot 1 IoCs
Chaos-variant payload
Processes:
resource yara_rule /etc/id.services.conf kaiji_chaosbot -
Executes dropped EXE 4 IoCs
Processes:
32678id.services.confid.services.conf32678ioc pid process /etc/32678 730 32678 /etc/id.services.conf 794 id.services.conf /etc/id.services.conf 801 id.services.conf /etc/32678 802 32678 -
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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Changes its process name 1 IoCs
Processes:
linux_mipsel_softfloat.elfdescription ioc pid process Changes the process name, possibly in an attempt to hide itself ksoftirqd/0 728 linux_mipsel_softfloat.elf -
Reads CPU attributes 1 TTPs 1 IoCs
Processes:
pkilldescription ioc process File opened for reading /sys/devices/system/cpu/online pkill -
Enumerates kernel/hardware configuration 1 TTPs 27 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
Processes:
systemctlsystemctlsystemctlsystemctlsystemctlid.services.confsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctllinux_mipsel_softfloat.elfsystemctlsystemctllinux_mipsel_softfloat.elfsystemctlsystemctlsystemctlid.services.confdescription ioc process File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size id.services.conf File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel_softfloat.elf File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel_softfloat.elf File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/fs/kdbus/0-system/bus systemctl File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size id.services.conf -
Processes:
pkillsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctlsystemctldescription ioc process File opened for reading /proc/22/status pkill File opened for reading /proc/73/cmdline pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/15/status pkill File opened for reading /proc/cmdline systemctl File opened for reading /proc/cmdline systemctl File opened for reading /proc/1/environ systemctl File opened for reading /proc/1/environ systemctl File opened for reading /proc/self/stat systemctl File opened for reading /proc/sys/kernel/osrelease pkill File opened for reading /proc/70/status pkill File opened for reading /proc/115/status pkill File opened for reading /proc/143/cmdline pkill File opened for reading /proc/filesystems systemctl File opened for reading /proc/filesystems systemctl File opened for reading /proc/10/cmdline pkill File opened for reading /proc/12/cmdline pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/cmdline systemctl File opened for reading /proc/filesystems systemctl File opened for reading /proc/367/status pkill File opened for reading /proc/filesystems systemctl File opened for reading /proc/71/cmdline pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/14/status pkill File opened for reading /proc/395/status pkill File opened for reading /proc/367/cmdline pkill File opened for reading /proc/709/status pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/1/environ systemctl File opened for reading /proc/self/stat systemctl File opened for reading /proc/720/status pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/6/cmdline pkill File opened for reading /proc/8/cmdline pkill File opened for reading /proc/11/cmdline pkill File opened for reading /proc/794/cmdline pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/cmdline systemctl File opened for reading /proc/16/status pkill File opened for reading /proc/703/status pkill File opened for reading /proc/15/cmdline pkill File opened for reading /proc/72/cmdline pkill File opened for reading /proc/707/status pkill File opened for reading /proc/708/status pkill File opened for reading /proc/24/status pkill File opened for reading /proc/759/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/self/stat systemctl File opened for reading /proc/23/cmdline pkill File opened for reading /proc/366/status pkill File opened for reading /proc/148/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/cmdline systemctl File opened for reading /proc/cmdline systemctl File opened for reading /proc/13/status pkill File opened for reading /proc/70/cmdline pkill File opened for reading /proc/336/cmdline pkill File opened for reading /proc/164/cmdline pkill File opened for reading /proc/245/status pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/filesystems systemctl File opened for reading /proc/77/cmdline pkill File opened for reading /proc/114/status pkill -
System Network Configuration Discovery 1 TTPs 2 IoCs
Adversaries may gather information about the network configuration of a system.
Processes:
linux_mipsel_softfloat.elflinux_mipsel_softfloat.elfpid process 710 linux_mipsel_softfloat.elf 726 linux_mipsel_softfloat.elf -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
Processes:
description flow ioc HTTP User-Agent header 6 Go-http-client/1.1
Processes
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/tmp/linux_mipsel_softfloat.elf/tmp/linux_mipsel_softfloat.elf1⤵
- Enumerates kernel/hardware configuration
- System Network Configuration Discovery
PID:710 -
/bin/shsh -c "/etc/32678&"2⤵PID:723
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/usr/sbin/serviceservice crond start2⤵PID:725
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:732
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:741
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/bin/systemctlsystemctl --quiet is-active multi-user.target3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:743 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"3⤵PID:749
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/bin/systemctlsystemctl list-unit-files --full "--type=socket"3⤵
- Enumerates kernel/hardware configuration
PID:748 -
/tmp/linux_mipsel_softfloat.elf/tmp/linux_mipsel_softfloat.elf " "2⤵
- Changes its process name
- Enumerates kernel/hardware configuration
- System Network Configuration Discovery
PID:726 -
/usr/sbin/update-rc.dupdate-rc.d linux_kill defaults3⤵PID:738
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/usr/local/sbin/systemctlsystemctl daemon-reload4⤵PID:755
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/usr/local/bin/systemctlsystemctl daemon-reload4⤵PID:755
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/usr/sbin/systemctlsystemctl daemon-reload4⤵PID:755
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:755
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/sbin/systemctlsystemctl daemon-reload4⤵PID:755
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/bin/systemctlsystemctl daemon-reload4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:755 -
/bin/bashbash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"3⤵
- Creates/modifies Cron job
PID:760 -
/usr/bin/renicerenice -20 7263⤵PID:763
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/bin/mountmount -o bind /tmp/ /proc/7263⤵PID:764
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/usr/sbin/serviceservice cron start3⤵PID:765
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:766
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:767
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/bin/systemctlsystemctl --quiet is-active multi-user.target4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:768 -
/bin/systemctlsystemctl list-unit-files --full "--type=socket"4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:770 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"4⤵PID:771
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/bin/systemctlsystemctl -p Triggers show dbus.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:772 -
/bin/systemctlsystemctl -p Triggers show ssh.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:773 -
/bin/systemctlsystemctl -p Triggers show syslog.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:774 -
/bin/systemctlsystemctl -p Triggers show systemd-fsckd.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:775 -
/bin/systemctlsystemctl -p Triggers show systemd-initctl.socket4⤵
- Enumerates kernel/hardware configuration
PID:776 -
/bin/systemctlsystemctl -p Triggers show systemd-journald-audit.socket4⤵
- Enumerates kernel/hardware configuration
PID:777 -
/bin/systemctlsystemctl -p Triggers show systemd-journald-dev-log.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:778 -
/bin/systemctlsystemctl -p Triggers show systemd-journald.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:779 -
/bin/systemctlsystemctl -p Triggers show systemd-networkd.socket4⤵
- Enumerates kernel/hardware configuration
PID:780 -
/bin/systemctlsystemctl -p Triggers show systemd-rfkill.socket4⤵
- Enumerates kernel/hardware configuration
PID:784 -
/bin/systemctlsystemctl -p Triggers show systemd-udevd-control.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:785 -
/bin/systemctlsystemctl -p Triggers show systemd-udevd-kernel.socket4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:786 -
/usr/local/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:765
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/usr/local/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:765
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/usr/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:765
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/usr/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:765
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/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:765
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/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:765 -
/bin/systemctlsystemctl start crond.service3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:787
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/etc/32678/etc/326781⤵
- Executes dropped EXE
PID:730 -
/bin/sleepsleep 602⤵PID:740
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/etc/id.services.conf/etc/id.services.conf2⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:794 -
/usr/bin/pkillpkill -9 326783⤵
- Reads CPU attributes
- Reads runtime system information
PID:798 -
/bin/shsh -c "/etc/32678&"3⤵PID:799
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/usr/sbin/serviceservice crond start3⤵PID:800
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:806
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:808
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/bin/systemctlsystemctl --quiet is-active multi-user.target4⤵
- Enumerates kernel/hardware configuration
PID:809 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"4⤵PID:812
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/bin/systemctlsystemctl list-unit-files --full "--type=socket"4⤵
- Enumerates kernel/hardware configuration
PID:811 -
/etc/id.services.conf/etc/id.services.conf " "3⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:801
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/usr/local/sbin/systemctlsystemctl start crond.service1⤵PID:725
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/usr/local/bin/systemctlsystemctl start crond.service1⤵PID:725
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/usr/sbin/systemctlsystemctl start crond.service1⤵PID:725
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/usr/bin/systemctlsystemctl start crond.service1⤵PID:725
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/sbin/systemctlsystemctl start crond.service1⤵PID:725
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/bin/systemctlsystemctl start crond.service1⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:725
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/etc/32678/etc/326781⤵
- Executes dropped EXE
PID:802 -
/bin/sleepsleep 602⤵PID:807
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/usr/local/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:800
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/usr/local/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:800
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/usr/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:800
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/usr/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:800
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/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:800
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/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:800
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33B
MD5d73d3376908ea075a939e3871ad0fabe
SHA1320ff65831247ba199515f1b94df26cc8a3e5f76
SHA256edbdabe30d8236a2c0a4eb89dfd597552130e4c1a4e93f8fe1568920442ad73a
SHA51257b83fef88620598beb5d65626bf757d0abef242d2d6a01796a61474dedc5095a4a9d0f292b6abb450cad3d4410ab8456253600f58ddb66cfe6d79e1c8415536
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Filesize
61B
MD5768eaf287796da19e1cf5e0b2fb1b161
SHA16a1ce2ee5ccc86d1f33806feb14547b35290df2a
SHA2561d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb
SHA512e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620
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Filesize
5.6MB
MD5ad1e0eac7b5a21d48787c13116526ff6
SHA1cdd1a9a416f8c6ffa4dc70638990376695fafbf0
SHA2562ea79246ca36e0bfd5c1968d4344d2b74e3c230be19867732968d63577084f06
SHA512e32c24f20f66e2945eff0fbe0dc17bf9850a22455b4d4f272008cc40587ec57995c53e6ce7c046271c4c33faf5e424d53676590ad5e21d22061c39ba48dd6c4c
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Filesize
189B
MD53909975f7cc0d1121c1819b800069f31
SHA13e68de708c2e6c40fab6794afdee3104e5590189
SHA2566876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b
SHA51250600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e
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Filesize
37B
MD5cfb4e51061485fe91169381fbdc1538e
SHA19a85b9b766a15b01737a41d680e4593b7a9bde87
SHA256897f37267d0ceaa2fbdaa09847f5d08e6f8b01a0348a0d666264b0f10acd0c90
SHA512fb154ec711d2090a7461da4db8ddad2b522649a27e74162ecb203f539b1729430288bc02d78d2071bde9c4bbc005693403a57612ef50277d52f816cb94524216