Analysis
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max time kernel
90s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
22-12-2023 00:34
Static task
static1
Behavioral task
behavioral1
Sample
387ca63a073cf45af288f89a3da3da8c.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
387ca63a073cf45af288f89a3da3da8c.ps1
Resource
win10v2004-20231222-en
General
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Target
387ca63a073cf45af288f89a3da3da8c.ps1
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Size
656KB
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MD5
387ca63a073cf45af288f89a3da3da8c
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SHA1
4217bfd03054fd9f29bcbfc541953bc3f0c80fc3
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SHA256
75883ef3a7a7df97423835189c1703dc2271ec1623701599698252b9f2489613
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SHA512
a5095b2d67e41c99d1a007cbb6380f5e3e64ccf13a74b2d25c91a72b6726ede377fd9cfd0741b5c32f1e5543084dc703f5b5738d3e22b86340cca1b833ae39b5
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SSDEEP
12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64M8TVkc5A+:g3QTmr+
Malware Config
Extracted
oski
/103.114.107.28/l3030/
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 2140 set thread context of 2364 2140 powershell.exe aspnet_compiler.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1396 2364 WerFault.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2140 powershell.exe 2140 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2140 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 powershell.exe aspnet_compiler.exe PID 2140 wrote to memory of 2364 2140 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\387ca63a073cf45af288f89a3da3da8c.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#cmd2⤵PID:2364
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 10443⤵
- Program crash
PID:1396
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2364 -ip 23641⤵PID:4572
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82