oski | 3a7ddba50c414ef70d1796f1e3eef20b1684811f03a0c400d5388a0079ef4ce5

Analysis

max time kernel
2s
max time network
151s
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 02:33

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General

Target

537dafbf2acf47786823913fcb138634.ps1
Size

656KB
MD5

537dafbf2acf47786823913fcb138634
SHA1

750303a51406a6947f8c5043c9010a0f95590522
SHA256

3a7ddba50c414ef70d1796f1e3eef20b1684811f03a0c400d5388a0079ef4ce5
SHA512

778a88719be802f22facc88dbd0a19a153c5c2e79e043f2db0c4b4bb8995972a37485738763365ccc1815742fc183110f6f6c699532ccbe1034395fe0dfb7006
SSDEEP

12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64c8TVkc5A+:g3gTmr+

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l1919/

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 3292 set thread context of 4200	3292	powershell.exe	35

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4760	4200	WerFault.exe	35

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3292	powershell.exe
3292	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3292	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35
PID 3292 wrote to memory of 4200	3292	powershell.exe	35

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\537dafbf2acf47786823913fcb138634.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  #cmd
  2⤵
  PID:4200
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4200 -s 1120
    3⤵
    - Program crash
    PID:4760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4200 -ip 4200
1⤵
PID:1964

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3292-52-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-50-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-13-0x000002AC5F640000-0x000002AC5F650000-memory.dmp

Filesize
64KB

Download
memory/3292-11-0x000002AC5F640000-0x000002AC5F650000-memory.dmp

Filesize
64KB

Download
memory/3292-48-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-14-0x000002AC5F680000-0x000002AC5F6A6000-memory.dmp

Filesize
152KB

Download
memory/3292-26-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-46-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-54-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-44-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-60-0x00007FFE9C7B0000-0x00007FFE9D271000-memory.dmp

Filesize
10.8MB

Download
memory/3292-16-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-15-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-18-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-55-0x000002AC5F6A0000-0x000002AC5F6A1000-memory.dmp

Filesize
4KB

Download
memory/3292-0-0x000002AC5F650000-0x000002AC5F672000-memory.dmp

Filesize
136KB

Download
memory/3292-10-0x00007FFE9C7B0000-0x00007FFE9D271000-memory.dmp

Filesize
10.8MB

Download
memory/3292-12-0x000002AC5F640000-0x000002AC5F650000-memory.dmp

Filesize
64KB

Download
memory/3292-20-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-42-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-40-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-38-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-36-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-34-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-32-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-30-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-28-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-24-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/3292-22-0x000002AC5F680000-0x000002AC5F6A0000-memory.dmp

Filesize
128KB

Download
memory/4200-56-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4200-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4200-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4200-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4200-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download