oski | 2dc9af3230375f72ebcd07c13ec2c1a6ed4786bdc1beebb0cec324ee0ddc7587

Analysis

max time kernel
149s
max time network
143s
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, 12:57

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General

Target
936e261d17eb17f3d72d1b95460f6956.ps1
Size 485KB
Sample231222-p7bxpsefa3
SHA256 2dc9af3230375f72ebcd07c13ec2c1a6ed4786bdc1beebb0cec324ee0ddc7587
MD5 936e261d17eb17f3d72d1b95460f6956
SHA1 26f6e4b3c1cfc7b9cc502ee7a0f5faaa9261a6b2
SHA512 e401d49013edb278b8b34f480b7f5d08029fd541b34442bed34501f694555ec6808e37620a4083c9662b18ea3dfc6317f7eec300d79bc28364d6b69733eaec51
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Sigu:q3Hu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l20/

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 4076 set thread context of 4784	4076	powershell.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4320	4784	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4076	powershell.exe
4076	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4076	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\936e261d17eb17f3d72d1b95460f6956.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4784
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 1200
    3⤵
    - Program crash
    PID:4320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4784 -ip 4784
1⤵
PID:2636

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_vfkz401d.snb.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vfkz401d.snb.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4076-18-0x00007FFA828F0000-0x00007FFA833B1000-memory.dmp

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memory/4076-10-0x00007FFA828F0000-0x00007FFA833B1000-memory.dmp

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memory/4076-11-0x000001CFE2440000-0x000001CFE2450000-memory.dmp

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memory/4076-12-0x000001CFE2440000-0x000001CFE2450000-memory.dmp

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memory/4076-13-0x000001CFC9E10000-0x000001CFC9E22000-memory.dmp

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memory/4076-0-0x000001CFC9DE0000-0x000001CFC9E02000-memory.dmp

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memory/4784-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4784-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4784-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4784-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4784-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4784-24-0x0000000000400000-0x0000000000438000-memory.dmp

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