b55a7054a1c000f7ebcdfa771a49c10176a255b53e3ee2642889a02b006b588e

Analysis

max time kernel
3s
max time network
102s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20230831-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20230831-enkernel:4.15.0-161-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
04/09/2023, 11:13

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General

Target

d16cd2ce8642ada43273e9ef31d1c0a3.elf
Size

34KB
MD5

d16cd2ce8642ada43273e9ef31d1c0a3
SHA1

d1a1b23e14b07a121d68293414d43f432817701e
SHA256

b55a7054a1c000f7ebcdfa771a49c10176a255b53e3ee2642889a02b006b588e
SHA512

415f03913aee5c6aee9ce3810ed66396dee1d2902180ff0fef00e769f7ff9de26905d05e83b900c9151187b75906351221f92de121c07ae4789dc55d3855e3b2
SSDEEP

768:PBkwC8LqnYiZR9nXabj2M8V+ViQiVkwlBKqGIs/0M862:+wC8szdnXe8IiQiSwlcYs/b87

Score

7^/10

Malware Config

Signatures

Changes its process name 1 IoCs

description	pid	Process
Changes the process name, possibly in an attempt to hide itself	554	d16cd2ce8642ada43273e9ef31d1c0a3.elf

Modifies Watchdog functionality 1 TTPs 4 IoCs

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

Impair Defenses

T1562

description	ioc	Process
File opened for modification	/dev/misc/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf
File opened for modification	/dev/watchdog	Process not Found
File opened for modification	/dev/misc/watchdog	Process not Found
File opened for modification	/dev/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf

Writes file to system bin folder 1 TTPs 2 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
File opened for modification	/sbin/watchdog	Process not Found
File opened for modification	/sbin/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf

Enumerates kernel/hardware configuration 1 TTPs 6 IoCs

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

System Information Discovery

T1082

description	ioc	Process
File opened for reading	/sys/devices/virtual/misc/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf
File opened for reading	/sys/class/misc/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf
File opened for reading	/sys/class/watchdog	d16cd2ce8642ada43273e9ef31d1c0a3.elf
File opened for reading	/sys/devices/virtual/misc/watchdog	Process not Found
File opened for reading	/sys/class/misc/watchdog	Process not Found
File opened for reading	/sys/class/watchdog	Process not Found

/tmp/d16cd2ce8642ada43273e9ef31d1c0a3.elf
/tmp/d16cd2ce8642ada43273e9ef31d1c0a3.elf
1⤵
- Changes its process name
- Modifies Watchdog functionality
- Writes file to system bin folder
- Enumerates kernel/hardware configuration
PID:554

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Hijack Execution Flow

T1574

Privilege Escalation

Hijack Execution Flow

T1574

Defense Evasion

Hijack Execution Flow

T1574

Impair Defenses

T1562

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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