Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31/10/2024, 20:12
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20240903-en
General
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Target
file.exe
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Size
6.1MB
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MD5
015213997f4a1fc3503b19e2356738b2
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SHA1
c24933a5005cc58fdacced124f93adb74c23748b
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SHA256
b674f985f144f65b754715572db0cb17c0db762eb6d5217fbb93b15433572d97
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SHA512
148e3833dd853881b5e8231fca26ba947dca9f5c0e783362c9afc97c10ee4bb392c26ecab57d90bdbaae8a39bc937798a2864cbdd92ef490af674a612863ddd4
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SSDEEP
98304:tYweRLoL6mNCxDD/JXZU44RXgYja8MTyMfHN:9eRrmkRy5pjuT/N
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" file.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths file.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\file.exe = "0" file.exe -
pid Process 3132 powershell.exe 4808 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation file.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Nexus.lnk powershell.exe -
Uses the VBS compiler for execution 1 TTPs
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description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths file.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions file.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\file.exe = "0" file.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" file.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4340 set thread context of 2452 4340 file.exe 90 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4808 powershell.exe 3132 powershell.exe 3132 powershell.exe 4808 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4340 file.exe Token: SeDebugPrivilege 4808 powershell.exe Token: SeDebugPrivilege 3132 powershell.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 4340 wrote to memory of 4808 4340 file.exe 88 PID 4340 wrote to memory of 4808 4340 file.exe 88 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 4340 wrote to memory of 2452 4340 file.exe 90 PID 2452 wrote to memory of 3132 2452 vbc.exe 91 PID 2452 wrote to memory of 3132 2452 vbc.exe 91 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" file.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4340 -
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\file.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4808
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:2452 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "$ws = New-Object -ComObject WScript.Shell; $s = $ws.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Nexus.lnk'); $s.TargetPath = 'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe'; $s.Save()"3⤵
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3132
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
1KB
MD50f6a3762a04bbb03336fb66a040afb97
SHA10a0495c79f3c8f4cb349d82870ad9f98fbbaac74
SHA25636e2fac0ab8aee32e193491c5d3df9374205e328a74de5648e7677eae7e1b383
SHA512cc9ebc020ec18013f8ab4d6ca5a626d54db84f8dc2d97e538e33bb9a673344a670a2580346775012c85f204472f7f4dd25a34e59f1b827642a21db3325424b69
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82