219f9b6973c92dfe86b1018344b2113fd79d138509204dda6a5b5839de4b2de6 | Triage

Analysis

max time kernel
149s
max time network
198s
platform
debian-9_armhf
resource
debian9-armhf-20240611-en
resource tags

arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
23-11-2024 18:27

Sharing

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General

Target

cve_2024_6387/arm7
Size

4.9MB
MD5

c2e368e608090479ceb4bc9ce6e45081
SHA1

d17e71b4448aa8a2a3a753cf867bff73371a4f1a
SHA256

5123f1a56a5cbbb49840f41b8c5c7991b789a31cc5a3271b60805dabc40f71c6
SHA512

d8553abb0720e9f3d812052accddc0eaaa6121a582ff0c8dc637377a70036f6f04ac990363279aeb2a82839610b3a29aaa8ddd0ec4eb5d2b110eaeeda3d7b68a
SSDEEP

49152:4ozxe7ZxI0mFBDQ1WJ9OrA2lIlMMkinIy:4ote7ZxI0mFBDJSC

Score

7^/10

defense_evasion discovery persistence privilege_escalation

Malware Config

Signatures

Modifies Watchdog functionality 1 TTPs 2 IoCs

Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

defense_evasion

Impair Defenses

description	ioc	Process
File opened for modification	/dev/watchdog	arm7
File opened for modification	/dev/misc/watchdog	arm7

Creates/modifies environment variables 1 TTPs 3 IoCs

Creating/modifying environment variables is a common persistence mechanism.

persistence privilege_escalation defense_evasion

Path Interception by PATH Environment Variable

description	ioc	Process
File opened for modification	/etc/profile.d/bash.cfg	arm7
File opened for modification	/etc/profile.d/bash.cfg.sh	arm7
File opened for modification	/etc/profile.d/gateway.sh	arm7

Modifies init.d 2 TTPs 18 IoCs

Adds/modifies system service, likely for persistence.

Boot or Logon Autostart Execution

RC Scripts

description	ioc	Process
File opened for modification	/etc/init.d/selinux-autorelabel	arm7
File opened for modification	/etc/init.d/udev	arm7
File opened for modification	/etc/init.d/cron	arm7
File opened for modification	/etc/init.d/kmod	arm7
File opened for modification	/etc/init.d/dns-udp4	arm7
File opened for modification	/etc/init.d/exim4	arm7
File opened for modification	/etc/init.d/networking	arm7
File opened for modification	/etc/init.d/ssh	arm7
File opened for modification	/etc/init.d/sudo	arm7
File opened for modification	/etc/init.d/dbus	arm7
File opened for modification	/etc/init.d/hwclock.sh	arm7
File opened for modification	/etc/init.d/console-setup.sh	arm7
File opened for modification	/etc/init.d/keyboard-setup.sh	arm7
File opened for modification	/etc/init.d/procps	arm7
File opened for modification	/etc/init.d/rsyslog	arm7
File opened for modification	/etc/init.d/x11-common	arm7
File opened for modification	/etc/init.d/alsa-utils	arm7
File opened for modification	/etc/init.d/auditd	arm7

Modifies Bash startup script 2 TTPs 3 IoCs

Boot or Logon Autostart Execution

Unix Shell Configuration Modification

description	ioc	Process
File opened for modification	/etc/profile.d/bash.cfg	arm7
File opened for modification	/etc/profile.d/bash.cfg.sh	arm7
File opened for modification	/etc/profile.d/gateway.sh	arm7

Enumerates kernel/hardware configuration 1 TTPs 7 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery

description	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/kernel/mm/transparent_hugepage/hpage_pmd_size	arm7
File opened for reading	/sys/kernel/mm/transparent_hugepage/hpage_pmd_size	arm7
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

Reads runtime system information 22 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/self/stat	systemctl
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/cmdline	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/filesystems	mount
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/filesystems	sed
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/self/stat	systemctl

/tmp/cve_2024_6387/arm7
/tmp/cve_2024_6387/arm7
1⤵
- Enumerates kernel/hardware configuration
PID:745
- /tmp/cve_2024_6387/arm7
  /tmp/cve_2024_6387/arm7 " "
  2⤵
  - Modifies Watchdog functionality
  - Creates/modifies environment variables
  - Modifies init.d
  - Modifies Bash startup script
  - Enumerates kernel/hardware configuration
  PID:752
- - /usr/sbin/update-rc.d
    update-rc.d dns-udp4 defaults
    3⤵
    PID:770
  - - /usr/local/sbin/systemctl
      systemctl daemon-reload
      4⤵
      PID:774
  - - /usr/local/bin/systemctl
      systemctl daemon-reload
      4⤵
      PID:774
  - - /usr/sbin/systemctl
      systemctl daemon-reload
      4⤵
      PID:774
  - - /usr/bin/systemctl
      systemctl daemon-reload
      4⤵
      PID:774
  - - /sbin/systemctl
      systemctl daemon-reload
      4⤵
      PID:774
  - - /bin/systemctl
      systemctl daemon-reload
      4⤵
      Enumerates kernel/hardware configuration
      Reads runtime system information
      PID:774
- - /bin/mount
    mount -o bind /tmp/ /proc/752
    3⤵
    - Reads runtime system information
    PID:777
- - /usr/sbin/service
    service cron start
    3⤵
    PID:778
  - - /usr/bin/basename
      basename /usr/sbin/service
      4⤵
      PID:779
  - - /usr/bin/basename
      basename /usr/sbin/service
      4⤵
      PID:781
  - - /bin/systemctl
      systemctl --quiet is-active multi-user.target
      4⤵
      Enumerates kernel/hardware configuration
      Reads runtime system information
      PID:782
  - - /bin/systemctl
      systemctl list-unit-files --full "--type=socket"
      4⤵
      Enumerates kernel/hardware configuration
      Reads runtime system information
      PID:785
  - - /bin/sed
      sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
      4⤵
      Reads runtime system information
      PID:786
- - /usr/local/sbin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    PID:778
- - /usr/local/bin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    PID:778
- - /usr/sbin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    PID:778
- - /usr/bin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    PID:778
- - /sbin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    PID:778
- - /bin/systemctl
    systemctl "--job-mode=ignore-dependencies" start cron.service
    3⤵
    - Enumerates kernel/hardware configuration
    - Reads runtime system information
    PID:778
- - /bin/systemctl
    systemctl start crond.service
    3⤵
    - Enumerates kernel/hardware configuration
    - Reads runtime system information
    PID:789

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Boot or Logon Initialization Scripts

RC Scripts

Event Triggered Execution

Unix Shell Configuration Modification

Hijack Execution Flow

Path Interception by PATH Environment Variable

Privilege Escalation

Boot or Logon Autostart Execution

Boot or Logon Initialization Scripts

RC Scripts

Event Triggered Execution

Unix Shell Configuration Modification

Hijack Execution Flow

Path Interception by PATH Environment Variable

Defense Evasion

Hijack Execution Flow

Path Interception by PATH Environment Variable

Impair Defenses

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/.mod

Filesize
27B

MD5
f449ef47c4f79ab4ecfe3d11022333d5

SHA1
61ebb524cee5a049cc96bf2cbf339a47dcb1b622

SHA256
503dffa20530956c5f61187e00935f20fe508c35dbb1fcf665b5d28d07d3d704

SHA512
a7015de8bd582dbf7ce6df708a58a725e1b1cd472c6616fbb89a9738c533c042ac39c071ca0cf2fc5df8e56f33bf8a28b1ebd3076570f5028cff773af89031f6

Download Submit
/boot/system.pub

Filesize
4.9MB

MD5
c2e368e608090479ceb4bc9ce6e45081

SHA1
d17e71b4448aa8a2a3a753cf867bff73371a4f1a

SHA256
5123f1a56a5cbbb49840f41b8c5c7991b789a31cc5a3271b60805dabc40f71c6

SHA512
d8553abb0720e9f3d812052accddc0eaaa6121a582ff0c8dc637377a70036f6f04ac990363279aeb2a82839610b3a29aaa8ddd0ec4eb5d2b110eaeeda3d7b68a

Download Submit
/etc/.cfg

Filesize
57B

MD5
25bfc97b9241077f7ee65c9d5831c0ae

SHA1
4d1e84cfe6f0619642400cbcc77ee008d452f622

SHA256
7e18da2137e9453fd98ed61aa79420a173383b2f7a5fe6538b70fbb560f9b3f6

SHA512
e3686c1fe664e67fc503275c6c0fa831ee43c1b081d8f826a616314505e3f952f98a8697911d1799e3f8c1957cd3a1bb5f888766877e5081b32942a6f2d8bff3

Download Submit
/etc/.cfg

Filesize
106B

MD5
72c697933b1c6df7c87bdd369cb63863

SHA1
22f1e69833cfc821e361065de90740f515b33152

SHA256
971a0328d8dc5d884c0334aec7b56075045284be376dd67b5656a8da0c76884c

SHA512
ecb5c32c57f51176acaf7f47043e26b6968b57647cd26dea313fd009de4b8a25f3ccc00022b44a881baf0702b154b3c69604b887e15c2990b96876226a4a0704

Download Submit
/etc/init.d/dns-udp4

Filesize
159B

MD5
79f1a0bf1a838c817142e43a5818733a

SHA1
768ed04a737dbdc969165092694e0e977321ca19

SHA256
a3f7d4499b03a14ff2de76122b6a61c221151f59daa6a63a78ae5a805c95a482

SHA512
b6d6f76f3e5b768a6670e05276724b70609259c856ba90ad34f8a782ac40134b9cf5cdabebb4aa55f076a786cedf8491adda9835f9d4aee90bd1820a45b2fbce

Download Submit
/etc/profile.d/gateway.sh

Filesize
693B

MD5
3026ea1fd9033ff98b33eeed6de33855

SHA1
16adcc93f1d82178f21f0d21828eb1d970a25c36

SHA256
d44cdc5eeb3095b522cf728d421f6d64968e6a1a911cd065be642a7f81558a6b

SHA512
9d8dc0fa8d4ec085b189e7b581595597012d0047464609ff03436dc5aafe1a5d6020606b89c6ee7586b2a42a5f69a6aa97ae4feb58de9311e7bdfb9fac6aa7a4

Download Submit