oski | 63cf348c2e3dc95324a96b8c07162556b539ff8d6dceef1d1b6f0379c42fface

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2023 17:11

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General

Target

fc2f33217e1a3595b6e287abf6f14262.ps1
Size

485KB
MD5

fc2f33217e1a3595b6e287abf6f14262
SHA1

607f7c499d49dce1d70f84cf7e45368065baf29f
SHA256

63cf348c2e3dc95324a96b8c07162556b539ff8d6dceef1d1b6f0379c42fface
SHA512

4ac861d100e47d5a9d11ce6fa6065ec08f4d115be7d02b0f0a230fe85661b1a845ca545b19576d4fad9756bbe26282e7518f71c1a78fe77f5a5efe3769c592d8
SSDEEP

12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64migu:q3bu

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l13/

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 1960 set thread context of 4700	1960	powershell.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3556	4700	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1960	powershell.exe
1960	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91
PID 1960 wrote to memory of 4700	1960	powershell.exe	91

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\fc2f33217e1a3595b6e287abf6f14262.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4700
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 652
    3⤵
    - Program crash
    PID:3556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4700 -ip 4700
1⤵
PID:4748

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ad1swcib.4vv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1960-19-0x00007FFE2D9E0000-0x00007FFE2E4A1000-memory.dmp

Filesize
10.8MB

Download
memory/1960-10-0x00007FFE2D9E0000-0x00007FFE2E4A1000-memory.dmp

Filesize
10.8MB

Download
memory/1960-11-0x0000014A3AC50000-0x0000014A3AC60000-memory.dmp

Filesize
64KB

Download
memory/1960-12-0x0000014A3AC50000-0x0000014A3AC60000-memory.dmp

Filesize
64KB

Download
memory/1960-13-0x0000014A3ABF0000-0x0000014A3AC02000-memory.dmp

Filesize
72KB

Download
memory/1960-5-0x0000014A3ABA0000-0x0000014A3ABC2000-memory.dmp

Filesize
136KB

Download
memory/4700-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4700-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4700-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4700-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4700-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4700-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download