e33e98eb90c09ecc24ce81706969766930e24690b9ce7bd7770aaf43f73c8e2d

Analysis

max time kernel
150s
max time network
151s
platform
debian-9_armhf
resource
debian9-armhf-20240418-en
resource tags

arch:armhfimage:debian9-armhf-20240418-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
17-02-2025 10:03

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General

Target

kre4per.arm.elf
Size

62KB
MD5

f6afdcbcd5fa63180026542c1d431e9d
SHA1

13922db0b825bb8ddef4ed653d35a98ef4e3f8b3
SHA256

e33e98eb90c09ecc24ce81706969766930e24690b9ce7bd7770aaf43f73c8e2d
SHA512

7241ac001a61ed4ba4e15966aa597dd5c4f0282a19fbd4113084dbea94d28b3b2cb9440e40b85991fca8d2838f0bbb089336ebec51907270cc42197e2a9a7502
SSDEEP

1536:gP1IwP44TCRfNdbYakabDrzKQlG9Wcq8JJTId42+:gP7V4sazKUG9bqAJTQ

Score

9^/10

defense_evasion discovery

Malware Config

Signatures

Contacts a large (117351) 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

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	kre4per.arm.elf
File opened for modification	/dev/misc/watchdog	kre4per.arm.elf

Writes file to system bin folder 2 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog	kre4per.arm.elf
File opened for modification	/bin/watchdog	kre4per.arm.elf

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	tAshemABCgdzzldfgkrs	643	kre4per.arm.elf

/tmp/kre4per.arm.elf
/tmp/kre4per.arm.elf
1⤵
- Modifies Watchdog functionality
- Writes file to system bin folder
- Changes its process name
PID:643

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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