Analysis
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max time kernel
143s -
max time network
151s -
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 01:07
Static task
static1
Behavioral task
behavioral1
Sample
40b725beab269432755b7015c056a354.ps1
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
40b725beab269432755b7015c056a354.ps1
Resource
win10v2004-20231215-en
General
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Target
40b725beab269432755b7015c056a354.ps1
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Size
656KB
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MD5
40b725beab269432755b7015c056a354
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SHA1
c1f36b7c607104af0772addd07e5897b58881faa
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SHA256
9e8c7b590d35ec86de9d2f1832c2c5291858d6ed8f07ea195074d2dc6cc523bd
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SHA512
b4d50994a84b82ceac45ab7b351b02b1b9376a67e81257684edb16c4353adbf9c2f68bfc74999c2206e997ae99273b0351b1570d88ec484c503fd48ad192bfb1
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SSDEEP
12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64U8TVkc5A+:g3ITmr+
Malware Config
Extracted
oski
/103.114.107.28/l37/
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 2956 set thread context of 2140 2956 powershell.exe aspnet_compiler.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1360 2140 WerFault.exe aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepid process 2956 powershell.exe 2956 powershell.exe 2956 powershell.exe 2956 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2956 powershell.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
powershell.exedescription pid process target process PID 2956 wrote to memory of 2444 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2444 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2444 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 powershell.exe aspnet_compiler.exe PID 2956 wrote to memory of 2140 2956 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\40b725beab269432755b7015c056a354.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#cmd2⤵PID:2140
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 11203⤵
- Program crash
PID:1360 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe#cmd2⤵PID:2444
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2140 -ip 21401⤵PID:3480
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82