61ed545dfdcb22b0c8373edb9369055d940db034f87c1e393a6a93a83d189141

Analysis

max time kernel
150s
max time network
154s
platform
debian-9_mips
resource
debian9-mipsbe-20240611-en
resource tags

arch:mipsimage:debian9-mipsbe-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
13-12-2024 14:42

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General

Target

.5r3fqt67ew531has4231.mips.elf
Size

201KB
MD5

1a14f4530c6ca9396ae6bd25eb7b43f3
SHA1

9512d696f7a24c3428331c36e5f34eca4af81b3c
SHA256

61ed545dfdcb22b0c8373edb9369055d940db034f87c1e393a6a93a83d189141
SHA512

6c32a180a36cc9170e1f957af802f85c6a6cb07c516eeab45724ebee62e0d849edd3ee1be5e2ed2805731013120dc8e0c0b52590288b4f75e7f66f881bf395fa
SSDEEP

3072:PR0EPd0uCtM++T7Q1hB+X7QPhwmasOG2ttLbZ/bnHNwbZnaZA:PR0EPpCtM++T7vgWvnGKLbZbntwRa6

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 2 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

pid	Process
700	sh
712	chmod

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	.5r3fqt67ew531has4231.mips.elf
File opened for modification	/dev/misc/watchdog	.5r3fqt67ew531has4231.mips.elf

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	/bin/systemd	699	.5r3fqt67ew531has4231.mips.elf

Reads runtime system information 3 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/self/maps	.5r3fqt67ew531has4231.mips.elf
File opened for reading	/proc/filesystems	mkdir

System Network Configuration Discovery 1 TTPs 2 IoCs

Adversaries may gather information about the network configuration of a system.

discovery

System Network Configuration Discovery

T1016

pid	Process
699	.5r3fqt67ew531has4231.mips.elf
710	mv

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/bin/systemd	sh

/tmp/.5r3fqt67ew531has4231.mips.elf
/tmp/.5r3fqt67ew531has4231.mips.elf
1⤵
- Modifies Watchdog functionality
- Changes its process name
- Reads runtime system information
- System Network Configuration Discovery
PID:699
- /bin/sh
  sh -c "rm -rf bin/systemd && mkdir bin; >bin/systemd && mv /tmp/.5r3fqt67ew531has4231.mips.elf bin/systemd; chmod 777 bin/systemd"
  2⤵
  - File and Directory Permissions Modification
  - Writes file to tmp directory
  PID:700
- - /bin/rm
    rm -rf bin/systemd
    3⤵
    PID:702
- - /bin/mkdir
    mkdir bin
    3⤵
    - Reads runtime system information
    PID:707
- - /bin/mv
    mv /tmp/.5r3fqt67ew531has4231.mips.elf bin/systemd
    3⤵
    - Reads runtime system information
    - System Network Configuration Discovery
    PID:710
- - /bin/chmod
    chmod 777 bin/systemd
    3⤵
    - File and Directory Permissions Modification
    PID:712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Impair Defenses

T1562

Credential Access

Discovery

System Network Configuration Discovery

T1016

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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