oski | 992ddc778bc3af49b9b7c424071cfe0db67dbcee83994debfee421ef4190d473

Analysis

max time kernel
92s
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
18-03-2024 15:54

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General

Target

d3e88703aaa4fe2bfdb0f663744724cc.exe
Size

680KB
MD5

d3e88703aaa4fe2bfdb0f663744724cc
SHA1

a1cc305fefde48e889325437a33a6572e3899654
SHA256

992ddc778bc3af49b9b7c424071cfe0db67dbcee83994debfee421ef4190d473
SHA512

bdfa11eebd000973b83be71a813ae4ecd6aae00cd1f7e6a738f7fcdb07784fe1386c50185bfda697d9c96f1cdb7dd0f45f02e55a319d6ce302179c04980fd8f7
SSDEEP

6144:VSiQrg69Xxsn7TdiQ2IhXAO0eq2+jTuDZR34M8NAWk2KdOAEQYFlX8s41aaST:IPxsn7Td7XFq2+aZwAL2YOAUl8lRST

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

chikkark.xyz

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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1720 set thread context of 3800	1720	d3e88703aaa4fe2bfdb0f663744724cc.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4672	3800	WerFault.exe	84

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1720	d3e88703aaa4fe2bfdb0f663744724cc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 3800	1720	d3e88703aaa4fe2bfdb0f663744724cc.exe	84
PID 1720 wrote to memory of 3800	1720	d3e88703aaa4fe2bfdb0f663744724cc.exe	84
PID 1720 wrote to memory of 3800	1720	d3e88703aaa4fe2bfdb0f663744724cc.exe	84
PID 1720 wrote to memory of 3800	1720	d3e88703aaa4fe2bfdb0f663744724cc.exe	84

C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
  "C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"
  2⤵
  PID:3800
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1296
    3⤵
    - Program crash
    PID:4672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3800 -ip 3800
1⤵
PID:3176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1720-1-0x0000000000C40000-0x0000000000D40000-memory.dmp

Filesize
1024KB

Download
memory/1720-3-0x0000000000FE0000-0x0000000000FE2000-memory.dmp

Filesize
8KB

Download
memory/3800-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3800-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3800-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3800-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3800-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download