d44134f23992a676ebb950df914e852bf32036f9cc5189f856c72e87b6672b92

Analysis

max time kernel
145s
max time network
133s
platform
debian-9_armhf
resource
debian9-armhf-20240729-en
resource tags

arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
05-01-2025 07:52

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General

Target

y.elf
Size

114KB
MD5

1411e0bacb1ac56f9edf16957c546053
SHA1

7fc4f176fca6c238d5a8119efa6a1b85e543464f
SHA256

d44134f23992a676ebb950df914e852bf32036f9cc5189f856c72e87b6672b92
SHA512

f7f9ee3815728ea475785c481b2c330a25990b1b60ab8f4142c5923c020a66822fef2686e1c8b8fbd6a1c5e99e7d1ff61b14dc5591127be23a053fd2e6c4e0f2
SSDEEP

3072:+/cpZmWwuQlftAIz2mqFbnzQUjPDm7XL7Q+cDNfD3Re:K2QlG7mqFbzvj7m7XL7Q+cDNfD3Re

Score

7^/10

defense_evasion discovery

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

T1562

description	ioc	Process
File opened for modification	/dev/watchdog	y.elf
File opened for modification	/dev/misc/watchdog	y.elf

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

discovery

Internet Connection Discovery

T1016.001

description	ioc	Process
File opened for reading	/proc/net/route	y.elf

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	sshd	645	y.elf

Reads system network configuration 1 TTPs 1 IoCs

Uses contents of /proc filesystem to enumerate network settings.

discovery

Internet Connection Discovery

T1016.001

description	ioc	Process
File opened for reading	/proc/net/route	y.elf

/tmp/y.elf
/tmp/y.elf
1⤵
- Modifies Watchdog functionality
- Reads system routing table
- Changes its process name
- Reads system network configuration
PID:645

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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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