Analysis
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max time kernel
140s -
max time network
123s -
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 14:55
Static task
static1
Behavioral task
behavioral1
Sample
cfa266344b12ad260d806d51e1382f58.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
cfa266344b12ad260d806d51e1382f58.ps1
Resource
win10v2004-20231215-en
General
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Target
cfa266344b12ad260d806d51e1382f58.ps1
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Size
656KB
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MD5
cfa266344b12ad260d806d51e1382f58
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SHA1
2eaaccfb288df22ef54f2ce2c41240a62410f0df
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SHA256
f0de5dd14a617af32710f1b582bc2b37d7d83fd36039c44fdb5f2c16a52a5f51
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SHA512
34983d59a817fd5ac9960b0899540b9e886f49a19af05b5e9bb21b20b22d45efa0e5733c41186feeecf86a52e4e0823d03557f8800c395690c73d4d8291e55d7
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SSDEEP
12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64r8TVkc5A+:g3VTmr+
Malware Config
Extracted
oski
/103.114.107.28/l29/
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 3052 set thread context of 1332 3052 powershell.exe aspnet_compiler.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 752 1332 WerFault.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 3052 powershell.exe 3052 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 3052 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 powershell.exe aspnet_compiler.exe PID 3052 wrote to memory of 1332 3052 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\cfa266344b12ad260d806d51e1382f58.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#cmd2⤵PID:1332
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 11123⤵
- Program crash
PID:752
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1332 -ip 13321⤵PID:3892
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82