Analysis
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max time kernel
147s -
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
22-12-2023 01:58
Static task
static1
Behavioral task
behavioral1
Sample
4e1f1d9bf4b4f09c83818b2947972800.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
4e1f1d9bf4b4f09c83818b2947972800.ps1
Resource
win10v2004-20231215-en
General
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Target
4e1f1d9bf4b4f09c83818b2947972800.ps1
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Size
485KB
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MD5
4e1f1d9bf4b4f09c83818b2947972800
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SHA1
cee9f50edc0d0c47e318a5be68750422e53d6ae2
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SHA256
f65e34cc627483978d2d832b23311e8634bf8689459a921e7fc5b2b3750c502b
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SHA512
0a772ff38ea7819d2a5544d55d6cc3ffbb3326a0fd3fa4b5db2af2a6880a1e1a8b3b4d812d7d811d4a7ffa141984677a2dd1fdfb1c4105baad233f06cf625e8c
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SSDEEP
12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64bigu:q3Uu
Malware Config
Extracted
oski
/103.114.107.28/l38/
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 2544 set thread context of 2276 2544 powershell.exe MSBuild.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3360 2276 WerFault.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2544 powershell.exe 2544 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2544 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 powershell.exe MSBuild.exe PID 2544 wrote to memory of 2276 2544 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\4e1f1d9bf4b4f09c83818b2947972800.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe#cmd2⤵PID:2276
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 11123⤵
- Program crash
PID:3360
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2276 -ip 22761⤵PID:4516
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82