Malware Analysis Report

2024-11-16 13:31

Sample ID 240621-cf3vwswakc
Target a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89
SHA256 a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89
Tags
xworm evasion execution rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89

Threat Level: Known bad

The file a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89 was found to be: Known bad.

Malicious Activity Summary

xworm evasion execution rat trojan

Detect Xworm Payload

Windows security bypass

Xworm

UAC bypass

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Windows security modification

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 02:02

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-21 02:01

Reported

2024-06-21 02:04

Platform

win10v2004-20240611-en

Max time kernel

142s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe"

Signatures

Detect Xworm Payload

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

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe = "0" C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
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:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe = "0" C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4420 set thread context of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4420 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4420 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 3432 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 4420 wrote to memory of 832 N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe

"C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe" -Force

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 172.93.222.235:7725 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 172.93.222.235:7725 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 172.93.222.235:7725 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 172.93.222.235:7725 tcp
US 172.93.222.235:7725 tcp

Files

memory/4420-1-0x00007FF81BD63000-0x00007FF81BD65000-memory.dmp

memory/4420-0-0x000001CA5B490000-0x000001CA5B4AC000-memory.dmp

memory/4420-2-0x00007FF81BD60000-0x00007FF81C821000-memory.dmp

memory/4420-3-0x000001CA75A00000-0x000001CA75A62000-memory.dmp

memory/3432-4-0x0000000000400000-0x0000000000410000-memory.dmp

memory/3432-5-0x000000007432E000-0x000000007432F000-memory.dmp

memory/3432-6-0x0000000004F30000-0x0000000004FCC000-memory.dmp

memory/3940-7-0x00007FF81BD63000-0x00007FF81BD65000-memory.dmp

memory/3940-8-0x00007FF81BD60000-0x00007FF81C821000-memory.dmp

memory/3940-9-0x0000022E83090000-0x0000022E830B2000-memory.dmp

memory/3940-10-0x00007FF81BD60000-0x00007FF81C821000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ku2a3ux0.hpm.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3940-22-0x00007FF81BD60000-0x00007FF81C821000-memory.dmp

memory/4420-23-0x00007FF81BD60000-0x00007FF81C821000-memory.dmp

memory/3432-24-0x0000000004ED0000-0x0000000004EE0000-memory.dmp

memory/3432-25-0x00000000058F0000-0x0000000005E94000-memory.dmp

memory/3432-26-0x0000000005EA0000-0x0000000005F32000-memory.dmp

memory/3432-27-0x00000000058B0000-0x00000000058BA000-memory.dmp

memory/3432-28-0x000000007432E000-0x000000007432F000-memory.dmp

memory/3432-29-0x0000000004ED0000-0x0000000004EE0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 02:01

Reported

2024-06-21 02:04

Platform

win7-20231129-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe"

Signatures

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe

"C:\Users\Admin\AppData\Local\Temp\a504370334b058a77d2aeb53aec960261d6a6f4e34cda37b199f67978cbcfb89.exe"

Network

N/A

Files

memory/944-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

memory/944-1-0x00000000003A0000-0x00000000003BC000-memory.dmp

memory/944-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

memory/944-3-0x0000000000590000-0x00000000005F2000-memory.dmp

memory/944-4-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp