616d5263976607ab8bf4ba56a840978b036b706dd81ecee7d41eb0e5bf92248d

Analysis

max time kernel
147s
max time network
144s
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
28-11-2024 17:43

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General

Target

armv4l.elf
Size

126KB
MD5

90866f08bfefe79ff181f6b65a1a32b1
SHA1

2db3b6b1532d15c6fa046c9472a6720c0bc383ec
SHA256

616d5263976607ab8bf4ba56a840978b036b706dd81ecee7d41eb0e5bf92248d
SHA512

386e5317132538e4a59b65f3a000594d3fad89bb15710f02dff710962b1ec55817937cddeeb949b879a80e78176953204846be7c1570e644a77f51094a570f80
SSDEEP

3072:6jVlyaL5JCrIpv04spbttiEiTmP46aQyfPlfKsNb:yoCJCN4spbHemP46aQyfPlfKsNb

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

Processes:

armv4l.elf

description	ioc	Process
File opened for modification	/dev/watchdog	armv4l.elf
File opened for modification	/dev/misc/watchdog	armv4l.elf

Reads system routing table 1 TTPs 1 IoCs

Gets active network interfaces from /proc virtual filesystem.

discovery

Internet Connection Discovery

T1016.001

Processes:

armv4l.elf

description	ioc	Process
File opened for reading	/proc/net/route	armv4l.elf

Changes its process name 1 IoCs

Processes:

armv4l.elf

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	sshd	639	armv4l.elf

Reads system network configuration 1 TTPs 1 IoCs

Uses contents of /proc filesystem to enumerate network settings.

discovery

Internet Connection Discovery

T1016.001

Processes:

armv4l.elf

description	ioc	Process
File opened for reading	/proc/net/route	armv4l.elf

/tmp/armv4l.elf
/tmp/armv4l.elf
1⤵
- Modifies Watchdog functionality
- Reads system routing table
- Changes its process name
- Reads system network configuration
PID:639

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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