Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2024 01:43
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 4084 set thread context of 4540 4084 powershell.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepid process 4084 powershell.exe 4084 powershell.exe 4084 powershell.exe 4084 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 4084 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
powershell.exedescription pid process target process PID 4084 wrote to memory of 4920 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4920 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4920 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.exe PID 4084 wrote to memory of 4540 4084 powershell.exe aspnet_compiler.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⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#Powershell2⤵
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mqucpgri.1vz.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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memory/4084-5-0x00000299DBF90000-0x00000299DBFB2000-memory.dmpFilesize
136KB
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memory/4084-10-0x00007FFEC3D10000-0x00007FFEC47D1000-memory.dmpFilesize
10.8MB
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memory/4084-11-0x00000299F4530000-0x00000299F4540000-memory.dmpFilesize
64KB
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memory/4084-12-0x00000299F4530000-0x00000299F4540000-memory.dmpFilesize
64KB
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memory/4084-13-0x00000299F44B0000-0x00000299F44C2000-memory.dmpFilesize
72KB
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memory/4084-19-0x00007FFEC3D10000-0x00007FFEC47D1000-memory.dmpFilesize
10.8MB
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memory/4540-15-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4540-20-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4540-18-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4540-14-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4540-21-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB