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
description pid Process procid_target PID 4084 set thread context of 4540 4084 powershell.exe 94 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4084 powershell.exe 4084 powershell.exe 4084 powershell.exe 4084 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4084 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4084 wrote to memory of 4920 4084 powershell.exe 93 PID 4084 wrote to memory of 4920 4084 powershell.exe 93 PID 4084 wrote to memory of 4920 4084 powershell.exe 93 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94 PID 4084 wrote to memory of 4540 4084 powershell.exe 94
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
PID:4084 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#Powershell2⤵PID:4920
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#Powershell2⤵PID:4540
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Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82