Analysis
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max time kernel
150s -
max time network
152s -
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 16:30
Static task
static1
Behavioral task
behavioral1
Sample
f1a8247a688ebcb34d728f27ff8489dd.ps1
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
f1a8247a688ebcb34d728f27ff8489dd.ps1
Resource
win10v2004-20231215-en
General
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Target
f1a8247a688ebcb34d728f27ff8489dd.ps1
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Size
421KB
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MD5
f1a8247a688ebcb34d728f27ff8489dd
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SHA1
33857481b9c0807642983896744082620efc0de7
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SHA256
c74dd60489c92b69bd23792a9a2fc5bd963de6781993a66e9b519d6317c93df2
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SHA512
35aee40dab7f1ec7ef5ba79feb70886518f899c8a5c2662e6e896e9c45099acf2593b9a14595bdac2132eb6d4be840b8a72176a138fe8766a555a1db9266ed0c
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SSDEEP
12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64bL68:q3c
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
description pid Process procid_target PID 2780 set thread context of 3840 2780 powershell.exe 94 -
Program crash 1 IoCs
pid pid_target Process procid_target 3584 3840 WerFault.exe 94 -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2780 powershell.exe 2780 powershell.exe 2780 powershell.exe 2780 powershell.exe 2780 powershell.exe 2780 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2780 powershell.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2780 wrote to memory of 228 2780 powershell.exe 93 PID 2780 wrote to memory of 228 2780 powershell.exe 93 PID 2780 wrote to memory of 228 2780 powershell.exe 93 PID 2780 wrote to memory of 4388 2780 powershell.exe 95 PID 2780 wrote to memory of 4388 2780 powershell.exe 95 PID 2780 wrote to memory of 4388 2780 powershell.exe 95 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94 PID 2780 wrote to memory of 3840 2780 powershell.exe 94
Processes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f1a8247a688ebcb34d728f27ff8489dd.ps11⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵PID:228
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵PID:3840
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 11083⤵
- Program crash
PID:3584
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"{path}"2⤵PID:4388
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3840 -ip 38401⤵PID:2736
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82