mirai | e1757c8fd0cfe73093e9ab4105f86e73f87faef58c35d5155a4bb34776a51170

Analysis

max time kernel
149s
max time network
151s
platform
debian-9_armhf
resource
debian9-armhf-20240418-en
resource tags

arch:armhfimage:debian9-armhf-20240418-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
13-11-2024 23:47

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General

Target

botnet.arm.elf
Size

35KB
MD5

6a4e5e35ce65f48106f75266d91abb47
SHA1

6c7064721c97e4aa0fac8afab491b081381c28e6
SHA256

e1757c8fd0cfe73093e9ab4105f86e73f87faef58c35d5155a4bb34776a51170
SHA512

a761a4406313a59a5d81f07a52574fb4f234d83c29e7f39809c9c80c61adbc3361150b654e2a0a851198ecc152c03f871536f89d44e9963e745b5400fda77251
SSDEEP

768:PW2TCQ1qe4vcMRQSRC9kkrE1PfxVwtj6I5m1n7AeglWu0Jj3Uh:PW2epHUgU7E9Twh631no0Jc

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 (23995) 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

640 sh
651 chmod
Changes its process name 1 IoCs

Processes:

botnet.arm.elf

description ioc pid process

Changes the process name, possibly in an attempt to hide itself /bin/busybox 638 botnet.arm.elf

pid	process
640	sh
651	chmod

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	/bin/busybox	638	botnet.arm.elf

Reads runtime system information 3 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

mkdirmvbotnet.arm.elf

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

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/busybox sh

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

/tmp/botnet.arm.elf
/tmp/botnet.arm.elf
1⤵
- Changes its process name
- Reads runtime system information
PID:638
- /bin/sh
  sh -c "rm -rf bin/busybox && mkdir bin; >bin/busybox && mv /tmp/botnet.arm.elf bin/busybox; chmod 777 bin/busybox"
  2⤵
  - File and Directory Permissions Modification
  - Writes file to tmp directory
  PID:640
- - /bin/rm
    rm -rf bin/busybox
    3⤵
    PID:642
- - /bin/mkdir
    mkdir bin
    3⤵
    - Reads runtime system information
    PID:643
- - /bin/mv
    mv /tmp/botnet.arm.elf bin/busybox
    3⤵
    - Reads runtime system information
    PID:649
- - /bin/chmod
    chmod 777 bin/busybox
    3⤵
    - File and Directory Permissions Modification
    PID:651

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/638-1-0x00008000-0x000266b4-memory.dmp

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