Analysis
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max time kernel
128s -
max time network
150s -
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, 19:58
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
3.8MB
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MD5
f5d31bef57f4d69af9f1b44a6f8f8d5e
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SHA1
2ffa0bb9f123f6e8cda8ef398d33c1c71a01961e
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SHA256
88dbbdcc10e16ae14103f8a0cbcd2d692668fc78efcc36a406880ff1e6b5fac0
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SHA512
c07729ab676d6db44b0176fd64d0ec79936bbdba2f2526f7b2f24e4e407e8100372329195018d661e2d79536cd02b9046acf739cebee0607aacbfa3331d9395a
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SSDEEP
49152:oyXV/ctnAqeOjKiPPDWw9OmzBo4H0yr+334/PYWsRtQ4vEphxd+ykCSMpt4xYhp0:rcO2RPP8mlH0yr+0W/5vEpnYmuxY7HET
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 -
Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions file.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1764 powershell.exe 372 powershell.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools file.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion file.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-1-5-21-1045960512-3948844814-3059691613-1000\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 -
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 -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum file.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 file.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1660 set thread context of 3956 1660 file.exe 91 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1764 powershell.exe 1764 powershell.exe 1764 powershell.exe 372 powershell.exe 372 powershell.exe 372 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1660 file.exe Token: SeDebugPrivilege 1764 powershell.exe Token: SeDebugPrivilege 372 powershell.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1660 wrote to memory of 1764 1660 file.exe 89 PID 1660 wrote to memory of 1764 1660 file.exe 89 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 1660 wrote to memory of 3956 1660 file.exe 91 PID 3956 wrote to memory of 372 3956 csc.exe 92 PID 3956 wrote to memory of 372 3956 csc.exe 92 -
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
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1660 -
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:1764
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3956 -
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\csc.exe'; $s.Save()"3⤵
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:372
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
4Virtualization/Sandbox Evasion
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
1KB
MD56c4805e00673bef922d51b1a7137028f
SHA10eabb38482d1733dd85a2af9c5342c2cafcd41eb
SHA2567af7d25fe7e3bb8b75bcffaa8573e2e9af7e7f70a840fa8bc0196d0ab396ecdd
SHA512eb6dacb4e0da6f45028ebf65ebffdc6aecdb6a34a582bb69aa5836ef02a7115f6b500ef2dd6a2c2be994ec9d0cbbff564368724593666105d3d4475441830cc1
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82