Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
11-01-2024 08:28
Static task
static1
Behavioral task
behavioral1
Sample
530792b4cfa0029b904ae5130fe1d265.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
530792b4cfa0029b904ae5130fe1d265.ps1
Resource
win10v2004-20231215-en
General
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Target
530792b4cfa0029b904ae5130fe1d265.ps1
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Size
421KB
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MD5
530792b4cfa0029b904ae5130fe1d265
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SHA1
37a8e553cf5c1d21b8894ed520293ad1e35dadfb
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SHA256
341efe957c47c866377854003f2bc59907ea2cebb98728121cc68f3b94e2c835
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SHA512
0f7c53e9636a49de7c7dcdfe18af627e91e0d7579cb0c748f858e21bf74c31a7eaf75e2cf73770793ce5df8952977b0b81293e0ff80ede5e8a8247f1833c89f7
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SSDEEP
12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64gL68:q3f
Malware Config
Extracted
oski
103.114.107.28/l15/
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 4936 set thread context of 1816 4936 powershell.exe MSBuild.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4568 1816 WerFault.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 4936 powershell.exe 4936 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 4936 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe PID 4936 wrote to memory of 1816 4936 powershell.exe MSBuild.exe
Processes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\530792b4cfa0029b904ae5130fe1d265.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 12443⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1816 -ip 18161⤵
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xj1k0doy.ywi.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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memory/1816-13-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1816-16-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1816-19-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1816-17-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1816-20-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/4936-9-0x000002A17E4C0000-0x000002A17E4E2000-memory.dmpFilesize
136KB
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memory/4936-10-0x00007FFA31440000-0x00007FFA31F01000-memory.dmpFilesize
10.8MB
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memory/4936-11-0x000002A17DC10000-0x000002A17DC20000-memory.dmpFilesize
64KB
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memory/4936-12-0x000002A17E4B0000-0x000002A17E4BA000-memory.dmpFilesize
40KB
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memory/4936-18-0x00007FFA31440000-0x00007FFA31F01000-memory.dmpFilesize
10.8MB