Analysis
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max time kernel
153s -
max time network
166s -
platform
debian-12_mipsel -
resource
debian12-mipsel-20240221-en -
resource tags
arch:mipselimage:debian12-mipsel-20240221-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem -
submitted
08-11-2024 09:24
Behavioral task
behavioral1
Sample
linux_mipsel.elf
Resource
debian12-mipsel-20240221-en
General
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Target
linux_mipsel.elf
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Size
5.6MB
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MD5
51c38d64622a147b3cebff1d0673f84c
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SHA1
53b2f3bff3137e6e963864f07e6c720e495bc530
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SHA256
5d93f66e884ea78188a88fe09933c4fbcce638e8653f9a29e7c093a24833b65a
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SHA512
f54df32d0f3be7f72a483fc07a72d183be3fc880116b6618afcd48de3f5ab237e1f2dc8aa96877d4278441e0477cdb348dea0583fbdf9b572b17dd6fcae115bc
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SSDEEP
98304:yC91hAFxvW6WGVqq7g3JDCg76dAuE8iW5ay5mIOX+aaNcc8pNkxXkz8xBs3K4HUK:yC91hAFxvW6WGVqq7g3JDCg76dAuE8i1
Malware Config
Signatures
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Executes dropped EXE 5 IoCs
Processes:
32678id.services.confid.services.conf32678id.services.confioc pid process /etc/32678 771 32678 /etc/id.services.conf 842 id.services.conf /etc/id.services.conf 850 id.services.conf /etc/32678 851 32678 /etc/id.services.conf 888 id.services.conf -
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
Processes:
linux_mipsel.elfdescription ioc process File opened for modification /dev/watchdog linux_mipsel.elf File opened for modification /dev/misc/watchdog linux_mipsel.elf -
Enumerates running processes
Discovers information about currently running processes on the system
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Processes:
linux_mipsel.elfdescription ioc process File opened for modification /etc/init.d/linux_kill linux_mipsel.elf -
Modifies systemd 2 TTPs 1 IoCs
Adds/ modifies systemd service files. Likely to achieve persistence.
Processes:
linux_mipsel.elfdescription ioc process File opened for modification /usr/lib/systemd/system/linux.service linux_mipsel.elf -
Reads CPU attributes 1 TTPs 1 IoCs
Processes:
pkilldescription ioc process File opened for reading /sys/devices/system/cpu/possible pkill -
Enumerates kernel/hardware configuration 1 TTPs 6 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
Processes:
linux_mipsel.elfid.services.confpkillid.services.confid.services.conflinux_mipsel.elfdescription ioc process File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel.elf File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size id.services.conf File opened for reading /sys/devices/system/node pkill 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 id.services.conf File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel.elf -
Processes:
pkilllinux_mipsel.elfdescription ioc process File opened for reading /proc/18/cgroup pkill File opened for reading /proc/25/ctty pkill File opened for reading /proc/37/cgroup pkill File opened for reading /proc/136/cmdline pkill File opened for reading /proc/550/status pkill File opened for reading /proc/704/cmdline pkill File opened for reading /proc/866/stat linux_mipsel.elf File opened for reading /proc/7/cmdline pkill File opened for reading /proc/27/ctty pkill File opened for reading /proc/35/stat pkill File opened for reading /proc/385/ctty pkill File opened for reading /proc/20/status pkill File opened for reading /proc/28/status pkill File opened for reading /proc/427/status pkill File opened for reading /proc/self/status pkill File opened for reading /proc/14/cmdline pkill File opened for reading /proc/114/cgroup pkill File opened for reading /proc/734/status pkill File opened for reading /proc/355/status pkill File opened for reading /proc/385/cmdline pkill File opened for reading /proc/874/stat linux_mipsel.elf File opened for reading /proc/810/stat linux_mipsel.elf File opened for reading /proc/11/status pkill File opened for reading /proc/27/stat pkill File opened for reading /proc/811/stat linux_mipsel.elf File opened for reading /proc/14/ctty pkill File opened for reading /proc/22/cmdline pkill File opened for reading /proc/848/stat linux_mipsel.elf File opened for reading /proc/790/stat linux_mipsel.elf File opened for reading /proc/6/cgroup pkill File opened for reading /proc/47/cmdline pkill File opened for reading /proc/115/stat pkill File opened for reading /proc/9/cgroup pkill File opened for reading /proc/19/ctty pkill File opened for reading /proc/28/cmdline pkill File opened for reading /proc/875/stat linux_mipsel.elf File opened for reading /proc/4/ctty pkill File opened for reading /proc/45/cmdline pkill File opened for reading /proc/48/ctty pkill File opened for reading /proc/385/stat pkill File opened for reading /proc/863/stat linux_mipsel.elf File opened for reading /proc/33/cgroup pkill File opened for reading /proc/42/stat pkill File opened for reading /proc/824/stat pkill File opened for reading /proc/841/stat linux_mipsel.elf File opened for reading /proc/3/ctty pkill File opened for reading /proc/14/stat pkill File opened for reading /proc/35/status pkill File opened for reading /proc/860/stat linux_mipsel.elf File opened for reading /proc/789/stat linux_mipsel.elf File opened for reading /proc/23/cmdline pkill File opened for reading /proc/136/cgroup pkill File opened for reading /proc/825/stat linux_mipsel.elf File opened for reading /proc/19/stat pkill File opened for reading /proc/19/cgroup pkill File opened for reading /proc/47/ctty pkill File opened for reading /proc/136/ctty pkill File opened for reading /proc/851/stat linux_mipsel.elf File opened for reading /proc/27/cmdline pkill File opened for reading /proc/114/cmdline pkill File opened for reading /proc/882/stat linux_mipsel.elf File opened for reading /proc/427/stat pkill File opened for reading /proc/541/cmdline pkill File opened for reading /proc/736/status 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 745 linux_mipsel.elf 769 linux_mipsel.elf
Processes
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/tmp/linux_mipsel.elf/tmp/linux_mipsel.elf1⤵
- Enumerates kernel/hardware configuration
- System Network Configuration Discovery
PID:745 -
/usr/bin/shsh -c "/etc/32678&"2⤵PID:767
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/usr/sbin/serviceservice crond start2⤵PID:768
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:773
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:779
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/usr/bin/systemctlsystemctl list-unit-files --full "--type=socket"3⤵PID:782
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/usr/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"3⤵PID:783
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/tmp/linux_mipsel.elf/tmp/linux_mipsel.elf " "2⤵
- Modifies Watchdog functionality
- Modifies init.d
- Modifies systemd
- Enumerates kernel/hardware configuration
- Reads runtime system information
- System Network Configuration Discovery
PID:769 -
/usr/sbin/update-rc.dupdate-rc.d linux_kill defaults3⤵PID:789
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/usr/local/sbin/systemctlsystemctl daemon-reload4⤵PID:803
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/usr/local/bin/systemctlsystemctl daemon-reload4⤵PID:803
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/usr/sbin/systemctlsystemctl daemon-reload4⤵PID:803
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:803
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/usr/bin/shsh -c "cd /boot;systemctl daemon-reload;systemctl enable linux.service;systemctl start linux.service;journalctl -xe --no-pager"3⤵PID:825
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:826
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/usr/bin/systemctlsystemctl enable linux.service4⤵PID:863
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/usr/bin/systemctlsystemctl start linux.service4⤵PID:880
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/usr/bin/journalctljournalctl -xe --no-pager4⤵PID:897
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/etc/32678/etc/326781⤵
- Executes dropped EXE
PID:771 -
/usr/bin/sleepsleep 602⤵PID:777
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/etc/id.services.conf/etc/id.services.conf2⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:842 -
/usr/bin/pkillpkill -9 326783⤵
- Reads CPU attributes
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:846
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/usr/bin/shsh -c "/etc/32678&"3⤵PID:848
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/usr/sbin/serviceservice crond start3⤵PID:849
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:852
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/usr/bin/basenamebasename /usr/sbin/service4⤵PID:854
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/usr/bin/systemctlsystemctl list-unit-files --full "--type=socket"4⤵PID:859
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/usr/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"4⤵PID:860
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/etc/id.services.conf/etc/id.services.conf " "3⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:850
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/usr/local/sbin/systemctlsystemctl start crond.service1⤵PID:768
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/usr/local/bin/systemctlsystemctl start crond.service1⤵PID:768
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/usr/sbin/systemctlsystemctl start crond.service1⤵PID:768
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/usr/bin/systemctlsystemctl start crond.service1⤵PID:768
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/etc/32678/etc/326781⤵
- Executes dropped EXE
PID:851 -
/usr/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:888
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/usr/local/sbin/systemctlsystemctl start crond.service1⤵PID:849
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/usr/local/bin/systemctlsystemctl start crond.service1⤵PID:849
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/usr/sbin/systemctlsystemctl start crond.service1⤵PID:849
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/usr/bin/systemctlsystemctl start crond.service1⤵PID:849
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2XDG Autostart Entries
1Boot or Logon Initialization Scripts
1RC Scripts
1Create or Modify System Process
1Systemd Service
1Replay Monitor
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Downloads
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Filesize
61B
MD5768eaf287796da19e1cf5e0b2fb1b161
SHA16a1ce2ee5ccc86d1f33806feb14547b35290df2a
SHA2561d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb
SHA512e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620
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Filesize
189B
MD53909975f7cc0d1121c1819b800069f31
SHA13e68de708c2e6c40fab6794afdee3104e5590189
SHA2566876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b
SHA51250600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e