Analysis
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max time kernel
121s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
08-01-2024 21:29
Static task
static1
Behavioral task
behavioral1
Sample
4c8015bbc773e46fdbd2ed3785d7bb57.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
4c8015bbc773e46fdbd2ed3785d7bb57.ps1
Resource
win10v2004-20231215-en
General
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Target
4c8015bbc773e46fdbd2ed3785d7bb57.ps1
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Size
493KB
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MD5
4c8015bbc773e46fdbd2ed3785d7bb57
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SHA1
64df0b0921bd0c9eb7189c17fe1a7111c34de176
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SHA256
9bb9ebda548a1b5411f95a24e4f2b27705473e91033ae6cb158c19eb2cca5908
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SHA512
824b2ee4d088340be9a0f589b50bf2ba08540000c99db380bfe9d1a849eb5f01e16f0e650bbadb45d4d89fce6fb2408a597cc6eeae1147ebda353b0305706a7c
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SSDEEP
12288:FMBZjw0RJ9u5ILYDxD3fxYehza/tw64Pj:FMn3u
Malware Config
Extracted
oski
103.99.1.60/b11k/
Signatures
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.exedescription pid process target process PID 2528 set thread context of 2852 2528 powershell.exe aspnet_compiler.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1420 2852 WerFault.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 2528 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2528 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
powershell.exeaspnet_compiler.exedescription pid process target process PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2528 wrote to memory of 2852 2528 powershell.exe aspnet_compiler.exe PID 2852 wrote to memory of 1420 2852 aspnet_compiler.exe WerFault.exe PID 2852 wrote to memory of 1420 2852 aspnet_compiler.exe WerFault.exe PID 2852 wrote to memory of 1420 2852 aspnet_compiler.exe WerFault.exe PID 2852 wrote to memory of 1420 2852 aspnet_compiler.exe WerFault.exe
Processes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\4c8015bbc773e46fdbd2ed3785d7bb57.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#Powershell2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 1123⤵
- Program crash
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2528-23-0x000007FEF5800000-0x000007FEF619D000-memory.dmpFilesize
9.6MB
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memory/2528-5-0x0000000002460000-0x0000000002468000-memory.dmpFilesize
32KB
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memory/2528-7-0x0000000002870000-0x00000000028F0000-memory.dmpFilesize
512KB
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memory/2528-6-0x000007FEF5800000-0x000007FEF619D000-memory.dmpFilesize
9.6MB
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memory/2528-8-0x000007FEF5800000-0x000007FEF619D000-memory.dmpFilesize
9.6MB
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memory/2528-10-0x0000000002870000-0x00000000028F0000-memory.dmpFilesize
512KB
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memory/2528-9-0x0000000002870000-0x00000000028F0000-memory.dmpFilesize
512KB
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memory/2528-11-0x000000001B190000-0x000000001B1A2000-memory.dmpFilesize
72KB
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memory/2528-4-0x000000001B230000-0x000000001B512000-memory.dmpFilesize
2.9MB
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memory/2852-19-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-15-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-14-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-12-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-21-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2852-17-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/2852-24-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB