Analysis
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max time kernel
141s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240319-en -
resource tags
arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system -
submitted
08-04-2024 11:41
Behavioral task
behavioral1
Sample
inst.exe
Resource
win7-20240319-en
General
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Target
inst.exe
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Size
5.3MB
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MD5
2ec92d9ae90fa8d467434d4950046233
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SHA1
a1201629f91ce9d57539e1574548222f3aca9b17
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SHA256
0b06f84f2776bf4e4c28e73625defe855d3817b1de1a17183db39016f7109695
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SHA512
2b1b0284ab697aa0da00b670cdff68beeb48d9fe9b39dea21562ccff29eba958e3ce08ee7c07cdfa0b82f2cf42fe43f4c4ba75d62eb2215023354cb1a70553f9
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SSDEEP
98304:vNN/N91h2eDZQjL7sU8I5DKBWoClkRGJewd8Y3evBQ9LtYVrEx3/o6ETgKbWyuk:B9GeDVI5DKBWZlkgJedYs6LtYdEhqTgY
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
inst.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ inst.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
inst.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion inst.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion inst.exe -
Loads dropped DLL 1 IoCs
Processes:
inst.exepid process 2168 inst.exe -
Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule behavioral1/memory/2168-0-0x0000000000EB0000-0x00000000013FA000-memory.dmp agile_net -
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\c3151015-52f5-4d47-88a4-ea55aea0d52a\AgileDotNetRT64.dll themida behavioral1/memory/2168-9-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-11-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-38-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-48-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-49-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-50-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-51-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-52-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-53-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-54-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-55-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-56-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-57-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-58-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-59-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-60-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida behavioral1/memory/2168-61-0x000007FEEE950000-0x000007FEEF102000-memory.dmp themida -
Processes:
inst.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA inst.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exepowershell.exeinst.exepid process 2968 powershell.exe 2672 powershell.exe 2168 inst.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
inst.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 2168 inst.exe Token: SeDebugPrivilege 2968 powershell.exe Token: SeDebugPrivilege 2672 powershell.exe Token: SeDebugPrivilege 2168 inst.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
inst.exepid process 2168 inst.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
inst.exedescription pid process target process PID 2168 wrote to memory of 2968 2168 inst.exe powershell.exe PID 2168 wrote to memory of 2968 2168 inst.exe powershell.exe PID 2168 wrote to memory of 2968 2168 inst.exe powershell.exe PID 2168 wrote to memory of 2672 2168 inst.exe powershell.exe PID 2168 wrote to memory of 2672 2168 inst.exe powershell.exe PID 2168 wrote to memory of 2672 2168 inst.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\inst.exe"C:\Users\Admin\AppData\Local\Temp\inst.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2168 -
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\Local\Temp\inst.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2968
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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 'inst.exe'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD5b6b60e4617587e16fbe1cf7472f5f04b
SHA1b8c6ba22318064f0b7aa4156c91bd5076fd763d0
SHA2564fa73899a6f1759189a369e4c696e008eace1136949c8828d0e267f6371d33f5
SHA512ed17dbe4a5c83146fc7630cdcf93b4210ad61c981354cfd156ce4cee93e0da6d32ed9255092b1fbc34c0601c58b96b242611a32e1c6e34fc05c07f79b6f6b734
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Filesize
2.9MB
MD59bb6ed08af544d3738e60200d2804180
SHA15a40b484ca56b1ce59add4ec283e21d60070be02
SHA25686d49f3894cc3de038abcde03803de8b6f239c237f34930ce5c41ab725c26cb7
SHA51263e6b90457c3e3e6e419e30fe57e35c66e08059611fbe4ffb60d28acd6ee8d9f0ccfa31d7b27e9af44ab13512490f3b7b7f5130df947c5de50a937dcee0a91a5