Analysis
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max time kernel
140s -
max time network
124s -
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 14:35
Static task
static1
Behavioral task
behavioral1
Sample
c707720b420b128bb25bedfe7b474e1e.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
c707720b420b128bb25bedfe7b474e1e.ps1
Resource
win10v2004-20231215-en
General
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Target
c707720b420b128bb25bedfe7b474e1e.ps1
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Size
485KB
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MD5
c707720b420b128bb25bedfe7b474e1e
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SHA1
e61e9a44d9776dc4bb2387ca89adef76cd23888b
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SHA256
880f872a96df84217bcca8eb543de65abe9a506cc2df99ee44de801fec9c8b9a
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SHA512
0d2438ec572e416a9dde33aa7a9a9bf3d9b67087c3e3d391480414a2cc0279cb289cf6a82186bc96f908391ff15e8ce6d7e4b80d81adb7bdd36c83ab26e605fa
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SSDEEP
12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64sigu:q3pu
Malware Config
Extracted
oski
/103.114.107.28/l4040/
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 668 set thread context of 3516 668 powershell.exe MSBuild.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4804 3516 WerFault.exe MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 668 powershell.exe 668 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 668 powershell.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
powershell.exedescription pid process target process PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 powershell.exe MSBuild.exe PID 668 wrote to memory of 3516 668 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\c707720b420b128bb25bedfe7b474e1e.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:668 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe#cmd2⤵PID:3516
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 10563⤵
- Program crash
PID:4804
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3516 -ip 35161⤵PID:5040
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82