oski | 341efe957c47c866377854003f2bc59907ea2cebb98728121cc68f3b94e2c835

Analysis

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

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General

Target
530792b4cfa0029b904ae5130fe1d265.ps1
Size 421KB
Sample240111-kc6flsdcb2
SHA256 341efe957c47c866377854003f2bc59907ea2cebb98728121cc68f3b94e2c835
MD5 530792b4cfa0029b904ae5130fe1d265
SHA1 37a8e553cf5c1d21b8894ed520293ad1e35dadfb
SHA512 0f7c53e9636a49de7c7dcdfe18af627e91e0d7579cb0c748f858e21bf74c31a7eaf75e2cf73770793ce5df8952977b0b81293e0ff80ede5e8a8247f1833c89f7
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64gL68:q3f
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l15/

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 4936 set thread context of 1816	4936	powershell.exe	92

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4568	1816	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4936	powershell.exe
4936	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92
PID 4936 wrote to memory of 1816	4936	powershell.exe	92

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\530792b4cfa0029b904ae5130fe1d265.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:1816
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 1244
    3⤵
    - Program crash
    PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1816 -ip 1816
1⤵
PID:3092

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_xj1k0doy.ywi.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xj1k0doy.ywi.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1816-13-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1816-16-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1816-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1816-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1816-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4936-9-0x000002A17E4C0000-0x000002A17E4E2000-memory.dmp

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memory/4936-10-0x00007FFA31440000-0x00007FFA31F01000-memory.dmp

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memory/4936-11-0x000002A17DC10000-0x000002A17DC20000-memory.dmp

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memory/4936-12-0x000002A17E4B0000-0x000002A17E4BA000-memory.dmp

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memory/4936-18-0x00007FFA31440000-0x00007FFA31F01000-memory.dmp

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