Analysis
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max time kernel
123s -
max time network
151s -
platform
debian-9_mipsel -
resource
debian9-mipsel-20240418-en -
resource tags
arch:mipselimage:debian9-mipsel-20240418-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem -
submitted
31-10-2024 23:16
Behavioral task
behavioral1
Sample
linux_mipsel.elf
Resource
debian9-mipsel-20240418-en
General
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Target
linux_mipsel.elf
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Size
5.6MB
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MD5
5f7d6a8f455e8f7c990ef1541efc6199
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SHA1
b25948840f5fa898cacc888074010bf77a8843cd
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SHA256
be95b29da48e169996c492b3c95f55c8af679136df3adaabd24a5d67d3c2af41
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SHA512
ae3b3a70f9c1e5de164b534393e5cea48258a8c5ef43a0b9f22bb6caff483d6b2a0dfdfe933fc7a7e8ec15209994809aa620326d8b6bb30ea98ccf93bccd1079
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SSDEEP
98304:yC91hAFxvW6WGVqq7g3JDCg76dAuE8iW5ay5mIOX+aaNcc8pNkxXkz8xBs3K4HUO:yC91hAFxvW6WGVqq7g3JDCg76dAuE8ip
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 6 IoCs
Processes:
32678id.services.confid.services.conf32678id.services.confid.services.confioc pid process /etc/32678 731 32678 /etc/id.services.conf 839 id.services.conf /etc/id.services.conf 846 id.services.conf /etc/32678 851 32678 /etc/id.services.conf 870 id.services.conf /etc/id.services.conf 877 id.services.conf -
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.elfdescription ioc pid process Changes the process name, possibly in an attempt to hide itself ksoftirqd/0 733 linux_mipsel.elf -
Reads CPU attributes 1 TTPs 2 IoCs
Processes:
pkillpkilldescription ioc process File opened for reading /sys/devices/system/cpu/online pkill File opened for reading /sys/devices/system/cpu/online pkill -
Enumerates kernel/hardware configuration 1 TTPs 17 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
Processes:
id.services.confsystemctlsystemctlsystemctlid.services.conflinux_mipsel.elfsystemctlsystemctlsystemctlid.services.confsystemctlsystemctllinux_mipsel.elfsystemctlid.services.confsystemctlsystemctldescription ioc process 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/kernel/mm/transparent_hugepage/hpage_pmd_size id.services.conf File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel.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 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.elf 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 -
Processes:
pkillpkillsystemctlsystemctlsystemctlsystemctlsedsystemctlsystemctlsystemctldescription ioc process File opened for reading /proc/126/cmdline pkill File opened for reading /proc/11/status pkill File opened for reading /proc/cmdline systemctl File opened for reading /proc/filesystems systemctl File opened for reading /proc/20/status pkill File opened for reading /proc/176/cmdline pkill File opened for reading /proc/710/status pkill File opened for reading /proc/filesystems systemctl File opened for reading /proc/self/stat systemctl File opened for reading /proc/17/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/382/cmdline pkill File opened for reading /proc/23/cmdline pkill File opened for reading /proc/358/status pkill File opened for reading /proc/806/cmdline pkill File opened for reading /proc/839/cmdline pkill File opened for reading /proc/24/cmdline pkill File opened for reading /proc/236/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/5/status pkill File opened for reading /proc/384/cmdline pkill File opened for reading /proc/843/cmdline pkill File opened for reading /proc/72/status pkill File opened for reading /proc/77/cmdline pkill File opened for reading /proc/filesystems pkill File opened for reading /proc/7/status pkill File opened for reading /proc/72/cmdline pkill File opened for reading /proc/431/cmdline pkill File opened for reading /proc/673/cmdline pkill File opened for reading /proc/filesystems sed File opened for reading /proc/718/status pkill File opened for reading /proc/688/cmdline pkill File opened for reading /proc/806/status pkill File opened for reading /proc/12/status pkill File opened for reading /proc/37/status pkill File opened for reading /proc/self/stat systemctl File opened for reading /proc/14/status pkill File opened for reading /proc/18/status pkill File opened for reading /proc/126/cmdline pkill File opened for reading /proc/152/status pkill File opened for reading /proc/7/cmdline pkill File opened for reading /proc/389/cmdline pkill File opened for reading /proc/431/cmdline pkill File opened for reading /proc/730/status pkill File opened for reading /proc/9/cmdline pkill File opened for reading /proc/160/status pkill File opened for reading /proc/14/cmdline pkill File opened for reading /proc/676/status pkill File opened for reading /proc/69/cmdline pkill File opened for reading /proc/cmdline systemctl File opened for reading /proc/82/status pkill File opened for reading /proc/806/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/68/cmdline pkill File opened for reading /proc/3/cmdline pkill File opened for reading /proc/4/cmdline pkill File opened for reading /proc/filesystems systemctl File opened for reading /proc/249/cmdline pkill File opened for reading /proc/709/status pkill File opened for reading /proc/711/status pkill File opened for reading /proc/1/environ systemctl File opened for reading /proc/24/status pkill File opened for reading /proc/331/cmdline pkill File opened for reading /proc/360/cmdline pkill -
System Network Configuration Discovery 1 TTPs 2 IoCs
Adversaries may gather information about the network configuration of a system.
Processes:
linux_mipsel.elflinux_mipsel.elfpid process 712 linux_mipsel.elf 730 linux_mipsel.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.elf/tmp/linux_mipsel.elf1⤵
- Enumerates kernel/hardware configuration
- System Network Configuration Discovery
PID:712 -
/bin/shsh -c "/etc/32678&"2⤵PID:727
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/etc/32678/etc/326783⤵
- Executes dropped EXE
PID:731 -
/bin/sleepsleep 604⤵PID:736
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/etc/id.services.conf/etc/id.services.conf4⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:839 -
/usr/bin/pkillpkill -9 326785⤵
- Reads CPU attributes
- Reads runtime system information
PID:843 -
/bin/shsh -c "/etc/32678&"5⤵PID:844
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/usr/sbin/serviceservice crond start5⤵PID:845
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/usr/bin/basenamebasename /usr/sbin/service6⤵PID:850
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/usr/bin/basenamebasename /usr/sbin/service6⤵PID:852
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/bin/systemctlsystemctl --quiet is-active multi-user.target6⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:854 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"6⤵PID:857
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/bin/systemctlsystemctl list-unit-files --full "--type=socket"6⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:856 -
/etc/id.services.conf/etc/id.services.conf " "5⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:846 -
/usr/sbin/serviceservice crond start2⤵PID:728
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:735
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:742
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/bin/systemctlsystemctl --quiet is-active multi-user.target3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:745 -
/bin/systemctlsystemctl list-unit-files --full "--type=socket"3⤵
- Enumerates kernel/hardware configuration
PID:751 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"3⤵
- Reads runtime system information
PID:752 -
/tmp/linux_mipsel.elf/tmp/linux_mipsel.elf " "2⤵
- Changes its process name
- Enumerates kernel/hardware configuration
- System Network Configuration Discovery
PID:730 -
/usr/sbin/update-rc.dupdate-rc.d linux_kill defaults3⤵PID:743
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/usr/local/sbin/systemctlsystemctl daemon-reload4⤵PID:756
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/usr/local/bin/systemctlsystemctl daemon-reload4⤵PID:756
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/usr/sbin/systemctlsystemctl daemon-reload4⤵PID:756
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:756
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/sbin/systemctlsystemctl daemon-reload4⤵PID:756
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/bin/systemctlsystemctl daemon-reload4⤵
- Enumerates kernel/hardware configuration
PID:756 -
/bin/bashbash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"3⤵
- Creates/modifies Cron job
PID:762 -
/usr/bin/renicerenice -20 7303⤵PID:764
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/bin/mountmount -o bind /tmp/ /proc/7303⤵PID:766
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/usr/sbin/serviceservice cron start3⤵PID:767
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:768
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:769
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/bin/systemctlsystemctl --quiet is-active multi-user.target4⤵
- Enumerates kernel/hardware configuration
PID:771 -
/bin/systemctlsystemctl list-unit-files --full "--type=socket"4⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:773 -
/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"4⤵PID:774
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/usr/local/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:767
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/usr/local/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:767
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/usr/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:767
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/usr/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:767
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/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵PID:767
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/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start cron.service3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:767 -
/bin/systemctlsystemctl start crond.service3⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:775
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/usr/local/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:728
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/usr/local/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:728
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/usr/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:728
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/usr/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:728
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/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:728
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/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵
- Enumerates kernel/hardware configuration
PID:728
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/etc/32678/etc/326781⤵
- Executes dropped EXE
PID:851 -
/bin/sleepsleep 602⤵PID:853
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/etc/id.services.conf/etc/id.services.conf2⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:870 -
/usr/bin/pkillpkill -9 326783⤵
- Reads CPU attributes
- Reads runtime system information
PID:874 -
/bin/shsh -c "/etc/32678&"3⤵PID:875
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/usr/sbin/serviceservice crond start3⤵PID:876
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/etc/id.services.conf/etc/id.services.conf " "3⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:877
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/usr/local/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:845
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/usr/local/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:845
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/usr/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:845
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/usr/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:845
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/sbin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵PID:845
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/bin/systemctlsystemctl "--job-mode=ignore-dependencies" start crond.service1⤵
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:845
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
MD55f7d6a8f455e8f7c990ef1541efc6199
SHA1b25948840f5fa898cacc888074010bf77a8843cd
SHA256be95b29da48e169996c492b3c95f55c8af679136df3adaabd24a5d67d3c2af41
SHA512ae3b3a70f9c1e5de164b534393e5cea48258a8c5ef43a0b9f22bb6caff483d6b2a0dfdfe933fc7a7e8ec15209994809aa620326d8b6bb30ea98ccf93bccd1079
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Filesize
189B
MD53909975f7cc0d1121c1819b800069f31
SHA13e68de708c2e6c40fab6794afdee3104e5590189
SHA2566876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b
SHA51250600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e
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Filesize
37B
MD5cfb4e51061485fe91169381fbdc1538e
SHA19a85b9b766a15b01737a41d680e4593b7a9bde87
SHA256897f37267d0ceaa2fbdaa09847f5d08e6f8b01a0348a0d666264b0f10acd0c90
SHA512fb154ec711d2090a7461da4db8ddad2b522649a27e74162ecb203f539b1729430288bc02d78d2071bde9c4bbc005693403a57612ef50277d52f816cb94524216