oski | 52ef007565a01c258b27436c36a8122312ea201281373a83c9bbaf3b1dd12bc9

Analysis

max time kernel
92s
max time network
135s
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, 01:52

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General

Target
4ce14f41f8f79978be7cccbd3cf7fce3.ps1
Size 485KB
Sample231222-cavmbseden
SHA256 52ef007565a01c258b27436c36a8122312ea201281373a83c9bbaf3b1dd12bc9
MD5 4ce14f41f8f79978be7cccbd3cf7fce3
SHA1 89c0eaa81253cfa337c567d2d62c5a28cdde6af2
SHA512 f4a38b72cacb656b307f57afca84517cc42dcc1c6819257db4e4ee02f17a9ee674cc0426fef848cae82dea23b310e14772126290e73c165a4f4bb142fff571c6
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Migu:q3pu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l1414/

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3508 set thread context of 848	3508	powershell.exe	30

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3468	848	WerFault.exe	30

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3508	powershell.exe
3508	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3508	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30
PID 3508 wrote to memory of 848	3508	powershell.exe	30

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\4ce14f41f8f79978be7cccbd3cf7fce3.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:848
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 1048
    3⤵
    - Program crash
    PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 848 -ip 848
1⤵
PID:4908

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

__PSScriptPolicyTest_t3vdnnbk.1fo.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t3vdnnbk.1fo.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/848-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/848-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/848-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/848-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/848-23-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3508-9-0x000002B96EFF0000-0x000002B96F012000-memory.dmp

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memory/3508-10-0x00007FF8F6EF0000-0x00007FF8F79B1000-memory.dmp

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memory/3508-12-0x000002B954960000-0x000002B954970000-memory.dmp

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memory/3508-11-0x000002B954960000-0x000002B954970000-memory.dmp

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memory/3508-13-0x000002B96EFE0000-0x000002B96EFF2000-memory.dmp

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memory/3508-18-0x00007FF8F6EF0000-0x00007FF8F79B1000-memory.dmp

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