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Analysis
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max time kernel
0s -
max time network
99s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2023, 13:46
Behavioral task
behavioral1
Sample
389516b53756da46ee90b831ba8943ba.dll
Resource
win7-20231215-en
9 signatures
150 seconds
General
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Target
389516b53756da46ee90b831ba8943ba.dll
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Size
164KB
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MD5
389516b53756da46ee90b831ba8943ba
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SHA1
0e41f0553920fda2e608523e99dfb5a76541417b
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SHA256
6d511cc2ae79502fe78a4e2a12790563b1af3743e575f1ff1a572a5f2737c292
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SHA512
d723c0f6792b1859a369374d4d024c463565c6c9eb40ed7476a9cdf90492e4c2114fdf5d4d0d2186756810f442daeb10d684eed30de348bd085dc71133f02237
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SSDEEP
3072:TDkvq9kS+RwTK4iDY2knwnLy4egAOd1gKDanQObo3/ejtopVthOK8+ZTWsJpEzAL:TDjrKwTVi07CO4eDOd1gK+do2ZopMK82
Malware Config
Signatures
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Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0" rundll32.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rundll32.exe -
resource yara_rule behavioral2/memory/3416-0-0x0000000010000000-0x000000001001B000-memory.dmp upx behavioral2/memory/3416-10-0x0000000010000000-0x000000001001B000-memory.dmp upx -
Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Explorer.EXE -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3416 rundll32.exe 3416 rundll32.exe 3416 rundll32.exe 3416 rundll32.exe 3416 rundll32.exe 3416 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3416 rundll32.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 3496 Explorer.EXE 3496 Explorer.EXE 3496 Explorer.EXE 3496 Explorer.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 5088 wrote to memory of 3416 5088 rundll32.exe 14 PID 5088 wrote to memory of 3416 5088 rundll32.exe 14 PID 5088 wrote to memory of 3416 5088 rundll32.exe 14 PID 3416 wrote to memory of 3496 3416 rundll32.exe 53 PID 3416 wrote to memory of 4696 3416 rundll32.exe 20 PID 3416 wrote to memory of 4696 3416 rundll32.exe 20 PID 3416 wrote to memory of 4696 3416 rundll32.exe 20
Processes
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\389516b53756da46ee90b831ba8943ba.dll,#11⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3416 -
C:\Windows\SysWOW64\explorer.exeexplorer C:\Users\Admin\AppData2⤵PID:4696
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\389516b53756da46ee90b831ba8943ba.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:5088
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵PID:5048
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:832
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:3496