Malware Analysis Report

2024-08-06 11:58

Sample ID 240320-ffkwvsgh87
Target Win-XwormRat-builder.exe
SHA256 276d53b6f343cffb4e81e6db87b30dce162b82dd2ed9aea49d754cdfba8e865a
Tags
toxiceye rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

276d53b6f343cffb4e81e6db87b30dce162b82dd2ed9aea49d754cdfba8e865a

Threat Level: Known bad

The file Win-XwormRat-builder.exe was found to be: Known bad.

Malicious Activity Summary

toxiceye rat trojan

ToxicEye

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Enumerates processes with tasklist

Creates scheduled task(s)

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Process Discovery
T1057
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-03-20 04:48

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-20 04:48

Reported

2024-03-20 04:49

Platform

win10v2004-20240226-en

Max time kernel

13s

Max time network

14s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe"

Signatures

ToxicEye

rat trojan toxiceye

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation C:\Users\Static\Update.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe N/A
N/A N/A C:\Users\Static\Update.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A
N/A N/A C:\Windows\System32\schtasks.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Enumerates processes with tasklist

Description Indicator Process Target
N/A N/A C:\Windows\system32\tasklist.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Static\Update.exe N/A
N/A N/A C:\Users\Static\Update.exe N/A
N/A N/A C:\Users\Static\Update.exe N/A
N/A N/A C:\Users\Static\Update.exe N/A
N/A N/A C:\Users\Static\Update.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\tasklist.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Static\Update.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Static\Update.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Static\Update.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4692 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe
PID 4692 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe
PID 4840 wrote to memory of 3992 N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe C:\Windows\System32\schtasks.exe
PID 4840 wrote to memory of 3992 N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe C:\Windows\System32\schtasks.exe
PID 4840 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe C:\Windows\System32\cmd.exe
PID 4840 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe C:\Windows\System32\cmd.exe
PID 2968 wrote to memory of 4980 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\tasklist.exe
PID 2968 wrote to memory of 4980 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\tasklist.exe
PID 2968 wrote to memory of 2232 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\find.exe
PID 2968 wrote to memory of 2232 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\find.exe
PID 2968 wrote to memory of 3436 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\timeout.exe
PID 2968 wrote to memory of 3436 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\timeout.exe
PID 2968 wrote to memory of 2504 N/A C:\Windows\System32\cmd.exe C:\Users\Static\Update.exe
PID 2968 wrote to memory of 2504 N/A C:\Windows\System32\cmd.exe C:\Users\Static\Update.exe
PID 2504 wrote to memory of 1468 N/A C:\Users\Static\Update.exe C:\Windows\System32\schtasks.exe
PID 2504 wrote to memory of 1468 N/A C:\Users\Static\Update.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe

"C:\Users\Admin\AppData\Local\Temp\Win-XwormRat-builder.exe"

C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe

"C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Static\Update.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp5525.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp5525.tmp.bat

C:\Windows\system32\tasklist.exe

Tasklist /fi "PID eq 4840"

C:\Windows\system32\find.exe

find ":"

C:\Windows\system32\timeout.exe

Timeout /T 1 /Nobreak

C:\Users\Static\Update.exe

"Update.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Static\Update.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 api.telegram.org udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp

Files

memory/4692-0-0x0000025214FC0000-0x00000252150AE000-memory.dmp

memory/4692-2-0x00007FFD43AC0000-0x00007FFD44581000-memory.dmp

memory/4692-3-0x000002522F610000-0x000002522F620000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\win-xwarm-builder.exe

MD5 f6f686df785d0abdc66d1f90fa508c4b
SHA1 75f348132001df30cbad9c7cae2e2072fcaca38e
SHA256 61b52af14fc66126a4e7f09b3cff7d3c09e5ad35acf23fb9ba43293fac0c995f
SHA512 7daa425723caade3ec747fbe6e425e26bc419e1a7dccd6253770fe1a118a8b90e0f40f6cf4bdac259e68a0198a384ed1b5de7515958f5e17e4e35219b9077d77

memory/4840-14-0x000001C5F3B60000-0x000001C5F3B86000-memory.dmp

memory/4840-15-0x00007FFD43AC0000-0x00007FFD44581000-memory.dmp

memory/4840-16-0x000001C5F3F70000-0x000001C5F3F80000-memory.dmp

memory/4692-17-0x00007FFD43AC0000-0x00007FFD44581000-memory.dmp

memory/4840-21-0x00007FFD43AC0000-0x00007FFD44581000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp5525.tmp.bat

MD5 3e6e7ed572917c40774ec2dfb73b36da
SHA1 46e4b2540954ad11de191fa252ca9d5ab4c60c85
SHA256 165cf875dd98ddec219dfd4868d8d1aad4a755537bef6606203e24dc90ed6958
SHA512 1d888dd353e83680e9f33de4c49ec3c76fd5c3078090c5dac19baa11ad9b7c3a656c8c245c40b8e93cd8878f2aca956a841ab26ab42f57922a153df3ca3f9373

memory/2504-26-0x00007FFD43AC0000-0x00007FFD44581000-memory.dmp

memory/2504-27-0x0000026CE14E0000-0x0000026CE14F0000-memory.dmp