Analysis
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max time kernel
153s -
max time network
160s -
platform
debian-12_mipsel -
resource
debian12-mipsel-20240729-en -
resource tags
arch:mipselimage:debian12-mipsel-20240729-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem -
submitted
04-11-2024 16:27
Behavioral task
behavioral1
Sample
linux_mipsel_softfloat.elf
Resource
debian12-mipsel-20240729-en
General
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Target
linux_mipsel_softfloat.elf
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Size
5.6MB
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MD5
367d36e768c7cb7d7945cdf3c7a76d37
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SHA1
80940b9725f9194cc347e5efe987673f40c229a4
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SHA256
b0d15ae15ddea91eba49906e03e65787613fcad8b190190dfde9f3cf62ee2be3
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SHA512
19b4dcfd599d5969fcf483628b56d395553777b3c3d6c0ed965c05752e4128bce8522a7aacfcd8459e9e992fa0a900c39c8d08fd860d360aec0138b217d0dfa5
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SSDEEP
49152:+RxVVRFMTwIupkYzfgh7rxQ2USaU85Jbq1rQcR6VYv0VF1:
Malware Config
Signatures
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Executes dropped EXE 4 IoCs
Processes:
32678id.services.confid.services.conf32678ioc pid process /etc/32678 748 32678 /etc/id.services.conf 868 id.services.conf /etc/id.services.conf 875 id.services.conf /etc/32678 876 32678 -
Modifies Watchdog functionality 1 TTPs 2 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
Processes:
linux_mipsel_softfloat.elfdescription ioc process File opened for modification /dev/watchdog linux_mipsel_softfloat.elf File opened for modification /dev/misc/watchdog linux_mipsel_softfloat.elf -
Enumerates running processes
Discovers information about currently running processes on the system
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Processes:
linux_mipsel_softfloat.elfdescription ioc process File opened for modification /etc/init.d/linux_kill linux_mipsel_softfloat.elf -
Modifies systemd 2 TTPs 1 IoCs
Adds/ modifies systemd service files. Likely to achieve persistence.
Processes:
linux_mipsel_softfloat.elfdescription ioc process File opened for modification /usr/lib/systemd/system/linux.service linux_mipsel_softfloat.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 5 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
Processes:
id.services.conflinux_mipsel_softfloat.elflinux_mipsel_softfloat.elfid.services.confpkilldescription ioc process 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_softfloat.elf File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size linux_mipsel_softfloat.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 -
Processes:
linux_mipsel_softfloat.elfpkillausearchjournalctldescription ioc process File opened for reading /proc/839/stat linux_mipsel_softfloat.elf File opened for reading /proc/5/status pkill File opened for reading /proc/6/status pkill File opened for reading /proc/31/stat pkill File opened for reading /proc/115/stat pkill File opened for reading /proc/384/cmdline pkill File opened for reading /proc/823/stat linux_mipsel_softfloat.elf File opened for reading /proc/830/stat linux_mipsel_softfloat.elf File opened for reading /proc/44/ctty pkill File opened for reading /proc/367/cgroup pkill File opened for reading /proc/872/ctty pkill File opened for reading /proc/779/stat linux_mipsel_softfloat.elf File opened for reading /proc/30/status pkill File opened for reading /proc/138/cgroup pkill File opened for reading /proc/868/cgroup pkill File opened for reading /proc/803/stat linux_mipsel_softfloat.elf File opened for reading /proc/113/cmdline pkill File opened for reading /proc/sys/kernel/cap_last_cap ausearch File opened for reading /proc/53/status pkill File opened for reading /proc/19/cmdline pkill File opened for reading /proc/23/ctty pkill File opened for reading /proc/119/status pkill File opened for reading /proc/119/cmdline pkill File opened for reading /proc/sys/kernel/cap_last_cap journalctl File opened for reading /proc/384/stat linux_mipsel_softfloat.elf File opened for reading /proc/10/ctty pkill File opened for reading /proc/11/cgroup pkill File opened for reading /proc/20/stat pkill File opened for reading /proc/24/cmdline pkill File opened for reading /proc/59/ctty pkill File opened for reading /proc/9/cgroup pkill File opened for reading /proc/6/stat pkill File opened for reading /proc/27/cmdline pkill File opened for reading /proc/677/cgroup pkill File opened for reading /proc/1/cgroup pkill File opened for reading /proc/1/cmdline pkill File opened for reading /proc/23/status pkill File opened for reading /proc/117/cgroup pkill File opened for reading /proc/391/cmdline pkill File opened for reading /proc/392/stat linux_mipsel_softfloat.elf File opened for reading /proc/4/ctty pkill File opened for reading /proc/14/ctty pkill File opened for reading /proc/681/stat linux_mipsel_softfloat.elf File opened for reading /proc/19/ctty pkill File opened for reading /proc/30/ctty pkill File opened for reading /proc/9/cmdline pkill File opened for reading /proc/48/cgroup pkill File opened for reading /proc/58/stat pkill File opened for reading /proc/10/status pkill File opened for reading /proc/33/cgroup pkill File opened for reading /proc/682/ctty pkill File opened for reading /proc/6/cgroup pkill File opened for reading /proc/115/cmdline pkill File opened for reading /proc/204/status pkill File opened for reading /proc/852/cmdline pkill File opened for reading /proc/9/ctty pkill File opened for reading /proc/368/cgroup pkill File opened for reading /proc/699/cgroup pkill File opened for reading /proc/59/cmdline pkill File opened for reading /proc/48/stat pkill File opened for reading /proc/412/stat pkill File opened for reading /proc/884/stat linux_mipsel_softfloat.elf File opened for reading /proc/838/stat linux_mipsel_softfloat.elf File opened for reading /proc/47/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 732 linux_mipsel_softfloat.elf 747 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 10 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:732 -
/usr/bin/shsh -c "/etc/32678&"2⤵PID:745
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/etc/32678/etc/326783⤵
- Executes dropped EXE
PID:748 -
/usr/bin/sleepsleep 604⤵PID:759
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/etc/id.services.conf/etc/id.services.conf4⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:868 -
/usr/bin/pkillpkill -9 326785⤵
- Reads CPU attributes
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:872
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/usr/bin/shsh -c "/etc/32678&"5⤵PID:873
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/etc/32678/etc/326786⤵
- Executes dropped EXE
PID:876 -
/usr/bin/sleepsleep 607⤵PID:881
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/usr/sbin/serviceservice crond start5⤵PID:874
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/usr/bin/basenamebasename /usr/sbin/service6⤵PID:877
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/usr/bin/basenamebasename /usr/sbin/service6⤵PID:882
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/usr/bin/systemctlsystemctl list-unit-files --full "--type=socket"6⤵PID:884
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/usr/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"6⤵PID:885
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/etc/id.services.conf/etc/id.services.conf " "5⤵
- Executes dropped EXE
- Enumerates kernel/hardware configuration
PID:875
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/usr/sbin/serviceservice crond start2⤵PID:746
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:751
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/usr/bin/basenamebasename /usr/sbin/service3⤵PID:754
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/usr/bin/systemctlsystemctl list-unit-files --full "--type=socket"3⤵PID:761
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/usr/bin/sedsed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"3⤵PID:762
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/tmp/linux_mipsel_softfloat.elf/tmp/linux_mipsel_softfloat.elf " "2⤵
- Modifies Watchdog functionality
- Modifies init.d
- Modifies systemd
- Enumerates kernel/hardware configuration
- Reads runtime system information
- System Network Configuration Discovery
PID:747 -
/usr/sbin/update-rc.dupdate-rc.d linux_kill defaults3⤵PID:772
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/usr/local/sbin/systemctlsystemctl daemon-reload4⤵PID:801
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/usr/local/bin/systemctlsystemctl daemon-reload4⤵PID:801
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/usr/sbin/systemctlsystemctl daemon-reload4⤵PID:801
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:801
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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:828
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/usr/bin/systemctlsystemctl daemon-reload4⤵PID:829
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/usr/bin/systemctlsystemctl enable linux.service4⤵PID:851
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/usr/bin/systemctlsystemctl start linux.service4⤵PID:886
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/usr/bin/journalctljournalctl -xe --no-pager4⤵
- Reads runtime system information
PID:897
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/usr/bin/shsh -c "cd /boot;ausearch -c 'System.img.conf' --raw | audit2allow -M my-Systemimgconf;semodule -X 300 -i my-Systemimgconf.pp"3⤵PID:905
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/usr/bin/audit2allowaudit2allow -M my-Systemimgconf4⤵PID:907
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/usr/sbin/ausearchausearch -c System.img.conf --raw4⤵
- Reads runtime system information
PID:906
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/usr/local/sbin/systemctlsystemctl start crond.service1⤵PID:746
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/usr/local/bin/systemctlsystemctl start crond.service1⤵PID:746
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/usr/sbin/systemctlsystemctl start crond.service1⤵PID:746
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/usr/bin/systemctlsystemctl start crond.service1⤵PID:746
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/usr/local/sbin/systemctlsystemctl start crond.service1⤵PID:874
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/usr/local/bin/systemctlsystemctl start crond.service1⤵PID:874
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/usr/sbin/systemctlsystemctl start crond.service1⤵PID:874
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/usr/bin/systemctlsystemctl start crond.service1⤵PID:874
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
Loading Replay Monitor...
Downloads
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Filesize
61B
MD5768eaf287796da19e1cf5e0b2fb1b161
SHA16a1ce2ee5ccc86d1f33806feb14547b35290df2a
SHA2561d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb
SHA512e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620
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Filesize
189B
MD53909975f7cc0d1121c1819b800069f31
SHA13e68de708c2e6c40fab6794afdee3104e5590189
SHA2566876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b
SHA51250600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e
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Filesize
207B
MD5d80ccc7ced99538f22336f2ec0249087
SHA1be4de9f604e065b53076a3d7ba702fe98c6b8746
SHA2560dc3e8552c3e6217e0dc7fd440c7ba4c9cd6e676ce2561e4f71949d2783ae968
SHA512d798e6516571fcd03bdffbd5405f320fb23422ceb563901658efa4101b4568eabc27730f40c0bcf6dde5509f01ba6965dd61f64675dad695924f1dea1746e6de