Analysis
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max time kernel
142s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08-04-2024 11:58
Behavioral task
behavioral1
Sample
inst.exe
Resource
win7-20240221-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 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
inst.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation inst.exe -
Loads dropped DLL 1 IoCs
Processes:
inst.exepid process 4648 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 behavioral2/memory/4648-0-0x0000000000EA0000-0x00000000013EA000-memory.dmp agile_net -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\c3151015-52f5-4d47-88a4-ea55aea0d52a\AgileDotNetRT64.dll themida behavioral2/memory/4648-9-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-11-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-45-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-48-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-49-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-50-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-51-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-52-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-53-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-55-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-56-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-57-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-58-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-59-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-60-0x00007FFFD3590000-0x00007FFFD3D42000-memory.dmp themida behavioral2/memory/4648-61-0x00007FFFD3590000-0x00007FFFD3D42000-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 5 IoCs
Processes:
powershell.exepowershell.exeinst.exepid process 3772 powershell.exe 3772 powershell.exe 4768 powershell.exe 4768 powershell.exe 4648 inst.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
inst.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 4648 inst.exe Token: SeDebugPrivilege 3772 powershell.exe Token: SeDebugPrivilege 4768 powershell.exe Token: SeDebugPrivilege 4648 inst.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
inst.exepid process 4648 inst.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
inst.exedescription pid process target process PID 4648 wrote to memory of 3772 4648 inst.exe powershell.exe PID 4648 wrote to memory of 3772 4648 inst.exe powershell.exe PID 4648 wrote to memory of 4768 4648 inst.exe powershell.exe PID 4648 wrote to memory of 4768 4648 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
- Checks computer location settings
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4648 -
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:3772
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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:4768
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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
944B
MD5731e9e4becec0b1ef9caad4b3562d4b4
SHA16dffb77aba4e92ad5bd4b7c02fdee6f328bcd457
SHA25671c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5
SHA512841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
2.9MB
MD59bb6ed08af544d3738e60200d2804180
SHA15a40b484ca56b1ce59add4ec283e21d60070be02
SHA25686d49f3894cc3de038abcde03803de8b6f239c237f34930ce5c41ab725c26cb7
SHA51263e6b90457c3e3e6e419e30fe57e35c66e08059611fbe4ffb60d28acd6ee8d9f0ccfa31d7b27e9af44ab13512490f3b7b7f5130df947c5de50a937dcee0a91a5