mirai | 414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12

Analysis

max time kernel
150s
max time network
153s
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
11-11-2024 02:24

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General

Target

414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf
Size

33KB
MD5

435c5797f6ceec4ca426271ad2a4e151
SHA1

03cbf06731f8a49f668027a9499210953a6482c0
SHA256

414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12
SHA512

50562f3d8c211220966beefb8af9cff33dfa2d565dcbb24a7abab2fd3b085cd2805efa2468deb0d3795a1878cbcf1ab0c986bfaa7b22f472eaf5cad707ee51cb
SSDEEP

768:pVeJDGugClAp31el9ykTytcZqWfPJog+zfTf5SNS3UX:aDG53QjdScZqWHwf50

Score

10^/10

mirai mirai botnet defense_evasion discovery

Malware Config

Extracted

Family

mirai

Botnet

MIRAI

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Mirai family
mirai
Contacts a large (22872) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
File and Directory Permissions Modification 1 TTPs 2 IoCs
Adversaries may modify file or directory permissions to evade defenses.
defense_evasion

Linux and Mac File and Directory Permissions Modification
T1222.002

Processes:

shchmod

pid process

662 sh
675 chmod

pid	process
662	sh
675	chmod

Changes its process name 1 IoCs

Processes:

414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	/bin/watchdog	660	414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf

Reads runtime system information 3 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elfmkdirmv

description	ioc	process
File opened for reading	/proc/self/exe	414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mv

Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.

Processes:

sh

description ioc process

File opened for modification /tmp/bin/watchdog sh

description	ioc	process
File opened for modification	/tmp/bin/watchdog	sh

/tmp/414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf
/tmp/414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf
1⤵
- Changes its process name
- Reads runtime system information
PID:660
- /bin/sh
  sh -c "rm -rf bin/watchdog && mkdir bin; >bin/watchdog && mv /tmp/414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf bin/watchdog; chmod 777 bin/watchdog"
  2⤵
  - File and Directory Permissions Modification
  - Writes file to tmp directory
  PID:662
- - /bin/rm
    rm -rf bin/watchdog
    3⤵
    PID:663
- - /bin/mkdir
    mkdir bin
    3⤵
    - Reads runtime system information
    PID:665
- - /bin/mv
    mv /tmp/414cfab9421debf15fbb84186304c7f8c90e74e23ee7a6dcd4f48be2892f7d12.elf bin/watchdog
    3⤵
    - Reads runtime system information
    PID:671
- - /bin/chmod
    chmod 777 bin/watchdog
    3⤵
    - File and Directory Permissions Modification
    PID:675

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/660-1-0x00008000-0x000256b4-memory.dmp

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