Analysis
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max time kernel
148s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
22-12-2023 16:54
Static task
static1
Behavioral task
behavioral1
Sample
f91a93aba78c83e1e03a3ce5e2dc72c6.ps1
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
f91a93aba78c83e1e03a3ce5e2dc72c6.ps1
Resource
win10v2004-20231215-en
General
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Target
f91a93aba78c83e1e03a3ce5e2dc72c6.ps1
-
Size
656KB
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MD5
f91a93aba78c83e1e03a3ce5e2dc72c6
-
SHA1
e0c790cc02a7af6ec022f81d1e6a2000e39fe0bc
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SHA256
37cdb8d6a19c396cebbe44953363fcf9c7f7c27b1d27734edb81491dfb8c3069
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SHA512
4235ad761835c2610c1e4314d7367f11970b546fcea106be81eaf698b0017c5269aa3264c46126e9d9269d4e9b034f21923b3ac1fd76302494a8f2dffd2d3815
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SSDEEP
12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64S8TVkc5A+:g3yTmr+
Malware Config
Extracted
oski
103.114.107.28/l20/
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 3804 set thread context of 4364 3804 powershell.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 3804 powershell.exe 3804 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 3804 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 powershell.exe aspnet_compiler.exe PID 3804 wrote to memory of 4364 3804 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\f91a93aba78c83e1e03a3ce5e2dc72c6.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3804 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#cmd2⤵PID:4364
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82