oski | d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce

Analysis

max time kernel
69s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2023 11:41

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General

Target

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
Size

541KB
MD5

e5f53562e08c032f6c18e69367365837
SHA1

bdc61269a61a6ec1ba96c9fa0550f500c60e63a6
SHA256

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce
SHA512

4fee9e525dfdfeb2f7ba978798eb5ca22d0671b9ce5d395acf1949c328ec45df4a7f755416cf6e5d411e961c782ee584bfb4008e1dcc594e55ab7990c0c0f89a
SSDEEP

6144:bU+etW4tbe3clpWyOb0p9f6b/HZSN9EXRLtjHJMoAjPfGs9x77tiCRnllQw8Kv60:IzGkWya0zyz5yaVHJMoSXGuNiCFLMdG

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

tomasisa.ug

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3168 set thread context of 4004	3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	82

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4656	4004	WerFault.exe	82

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 4004	3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	82
PID 3168 wrote to memory of 4004	3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	82
PID 3168 wrote to memory of 4004	3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	82
PID 3168 wrote to memory of 4004	3168	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	82

C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
"C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
  "C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe"
  2⤵
  PID:4004
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 1312
    3⤵
    - Program crash
    PID:4656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4004 -ip 4004
1⤵
PID:4724

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3168-135-0x0000000002A70000-0x0000000002A77000-memory.dmp

Filesize
28KB

Download
memory/4004-136-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4004-137-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download