oski | b1b4adb57471b463700ab48f81cd2550270fac73e0c1a95366fdc4380d15a659

Analysis

max time kernel
154s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06-01-2024 10:16

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General

Target

458ad2463c8a61f37ce0c256d5d824e0.exe
Size

447KB
MD5

458ad2463c8a61f37ce0c256d5d824e0
SHA1

3d9e3331f558962d5fbbab68f8a9dcca0b31bb6f
SHA256

b1b4adb57471b463700ab48f81cd2550270fac73e0c1a95366fdc4380d15a659
SHA512

690cc999cf47d7d4020c3087c261b67a1468ed38392cf7b63ff41ed18a93d1a36a2f685c6f44c4121e61a2f49430ac019b7aff45a3a4a8a8da89339ce40b3a17
SSDEEP

12288:efiUDGoIgDSiJc8uFxhSGeFSkVKNA9iMVLF1qHYfpRY80HiN433FLNNNNNNNNNNb:5QjJcJiGegkVIGLF1q4fpRY80HiN433h

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

evakark.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 1704 set thread context of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1808	2436	WerFault.exe	27

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1704	458ad2463c8a61f37ce0c256d5d824e0.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27
PID 1704 wrote to memory of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27
PID 1704 wrote to memory of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27
PID 1704 wrote to memory of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27
PID 1704 wrote to memory of 2436	1704	458ad2463c8a61f37ce0c256d5d824e0.exe	27
PID 2436 wrote to memory of 1808	2436	458ad2463c8a61f37ce0c256d5d824e0.exe	33
PID 2436 wrote to memory of 1808	2436	458ad2463c8a61f37ce0c256d5d824e0.exe	33
PID 2436 wrote to memory of 1808	2436	458ad2463c8a61f37ce0c256d5d824e0.exe	33
PID 2436 wrote to memory of 1808	2436	458ad2463c8a61f37ce0c256d5d824e0.exe	33

C:\Users\Admin\AppData\Local\Temp\458ad2463c8a61f37ce0c256d5d824e0.exe
"C:\Users\Admin\AppData\Local\Temp\458ad2463c8a61f37ce0c256d5d824e0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\458ad2463c8a61f37ce0c256d5d824e0.exe
  "C:\Users\Admin\AppData\Local\Temp\458ad2463c8a61f37ce0c256d5d824e0.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 768
    3⤵
    - Program crash
    PID:1808

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/1704-3-0x0000000000220000-0x0000000000222000-memory.dmp

Filesize
8KB

Download
memory/1704-1-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/1704-9-0x0000000000220000-0x0000000000222000-memory.dmp

Filesize
8KB

Download
memory/2436-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2436-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2436-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2436-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2436-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download