oski | d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce

Analysis

max time kernel
40s
max time network
43s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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

Processes:

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

description	pid	process	target process
PID 1456 set thread context of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1180 1336 WerFault.exe d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

pid process

1456 d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

pid process

1456 d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

pid	pid_target	process	target process
1180	1336	WerFault.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

pid	process
1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

pid	process
1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exed1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe

description	pid	process	target process
PID 1456 wrote to memory of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
PID 1456 wrote to memory of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
PID 1456 wrote to memory of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
PID 1456 wrote to memory of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
PID 1456 wrote to memory of 1336	1456	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
PID 1336 wrote to memory of 1180	1336	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	WerFault.exe
PID 1336 wrote to memory of 1180	1336	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	WerFault.exe
PID 1336 wrote to memory of 1180	1336	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	WerFault.exe
PID 1336 wrote to memory of 1180	1336	d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe	WerFault.exe

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:1456

C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe
"C:\Users\Admin\AppData\Local\Temp\d1b168734819a64df81a4b439b54c5e9c8770973313eb227e24226a6536c84ce.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 792
3⤵
- Program crash
PID:1180

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1180-61-0x0000000000000000-mapping.dmp

Download
memory/1336-57-0x0000000000417A8B-mapping.dmp

Download
memory/1336-60-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1456-56-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download
memory/1456-58-0x0000000000300000-0x0000000000307000-memory.dmp

Filesize
28KB

Download