63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9

Analysis

max time kernel
149s
max time network
149s
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
14/12/2024, 11:38

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General

Target

63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf
Size

208KB
MD5

f11b924fc91298f438dc964375faf556
SHA1

3e38f4877672317c01ee8add42c2fee04c8cf9e7
SHA256

63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9
SHA512

d5efb015a5f3222d8263bad6f3e66aa8b0b6b4fd65f90281fc2a860bc0959cb0fc5b74f343e97cf18cbd24c281e51df662265f7c48cdc2dd84565832ff98e3cf
SSDEEP

6144:FXr6Pdmvym2kaOUv2UM6Vu3wRM52B9SWM/RNbBR:F7M4ym2kaOUv2UMhAkP/bH

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
664	sh
677	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	63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf
File opened for modification	/dev/misc/watchdog	63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	/bin/systemd	663	63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf

Reads runtime system information 3 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/filesystems	mkdir
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/self/maps	63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf

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/63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf
/tmp/63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf
1⤵
- Modifies Watchdog functionality
- Changes its process name
- Reads runtime system information
PID:663
- /bin/sh
  /bin/sh -c "rm -rf bin/systemd && mkdir bin; >bin/systemd && mv /tmp/63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf bin/systemd; chmod 777 bin/systemd"
  2⤵
  - File and Directory Permissions Modification
  - Writes file to tmp directory
  PID:664
- - /bin/rm
    rm -rf bin/systemd
    3⤵
    PID:665
- - /bin/mkdir
    mkdir bin
    3⤵
    - Reads runtime system information
    PID:668
- - /bin/mv
    mv /tmp/63766e5f7840669cff5857f9a2785ca88e1edf2200820d894e6fff1ae7b0cef9.elf bin/systemd
    3⤵
    - Reads runtime system information
    PID:674
- - /bin/chmod
    chmod 777 bin/systemd
    3⤵
    - File and Directory Permissions Modification
    PID:677

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

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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