b7a8882a502098f8b51aa06b9c215be250307c4e355f6f7073819d2562f23741

Analysis

max time kernel
134s
max time network
148s
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
07/03/2025, 14:37

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General

Target

drea4.elf
Size

155KB
MD5

c1f2972eb772dcdfc5de05ba17fd89fe
SHA1

a67293add206b63c2794a489eb763fcc3f7b7528
SHA256

b7a8882a502098f8b51aa06b9c215be250307c4e355f6f7073819d2562f23741
SHA512

0bdd20297852d2dd7c6c3974eaf9539126ca40ad9068fe0ba1faf9c066f0f9968edf88e58dcfea4b485e3c5f5def62938f25525508d92aa59ae779778ba6c217
SSDEEP

3072:Yrar2mhqodwdRbfW4psvkBSmIW8OWfiXf1:Yr/dpfW4p0kBVIsW6XN

Score

9^/10

defense_evasion discovery

Malware Config

Signatures

Contacts a large (5122) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Deletes itself 1 IoCs

pid	Process
667	drea4.elf

Modifies Watchdog functionality 1 TTPs 1 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	drea4.elf

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

Writes file to system bin folder 2 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog:	drea4.elf
File opened for modification	/bin/watchdog:	drea4.elf

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	httpd	666	drea4.elf

/tmp/drea4.elf
/tmp/drea4.elf
1⤵
- Deletes itself
- Modifies Watchdog functionality
- Writes file to system bin folder
- Changes its process name
PID:666

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

Network Service Discovery

T1046

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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