mirai | f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad

Analysis

max time kernel
149s
max time network
153s
platform
ubuntu-22.04_amd64
resource
ubuntu2204-amd64-20240611-en
resource tags

arch:amd64arch:i386image:ubuntu2204-amd64-20240611-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system
submitted
11-11-2024 03:13

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General

Target

f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf
Size

36KB
MD5

7b6ab415c71284b4c35e8690d71af208
SHA1

0d7d3be2139760cfe48dfa5a3c29126175249b73
SHA256

f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad
SHA512

f0132df1e3d177fa13a5b6d54daff5ab48c63d03aedb8820160f526acb089a77ff030d348ed2321a845fa90fa1847ae83744b65a57beaaff88cc812105854cf0
SSDEEP

768:FdXCmnRFXIrd5wVr/FyuCh3JNYiwKuHONTSv9sPC1:rS2RFAErYuYvD8HLFuC1

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 (23966) 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:

chmodsh

pid process

1605 chmod
1601 sh

pid	process
1605	chmod
1601	sh

Changes its process name 1 IoCs

Processes:

f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf

description	ioc	pid	process
Changes the process name, possibly in an attempt to hide itself	/bin/watchdog	1600	f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf

Reads runtime system information 3 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elfmkdirmv

description	ioc	process
File opened for reading	/proc/self/exe	f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.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/f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf
/tmp/f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf
1⤵
- Changes its process name
- Reads runtime system information
PID:1600
- /bin/sh
  sh -c "rm -rf bin/watchdog && mkdir bin; >bin/watchdog && mv /tmp/f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf bin/watchdog; chmod 777 bin/watchdog"
  2⤵
  - File and Directory Permissions Modification
  - Writes file to tmp directory
  PID:1601
- - /usr/bin/rm
    rm -rf bin/watchdog
    3⤵
    PID:1602
- - /usr/bin/mkdir
    mkdir bin
    3⤵
    - Reads runtime system information
    PID:1603
- - /usr/bin/mv
    mv /tmp/f71f4e6d67db61fd21bc0c2f612412c8373ee60101fcfc34f0f99bd861d934ad.elf bin/watchdog
    3⤵
    - Reads runtime system information
    PID:1604
- - /usr/bin/chmod
    chmod 777 bin/watchdog
    3⤵
    - File and Directory Permissions Modification
    PID:1605

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/1600-1-0x0000000000400000-0x0000000000515d48-memory.dmp

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