oski | 90a9ef1c549a9f2646f6c603e27570832f371d25d2fc4b967c96f55fa034e557

Analysis

max time kernel
140s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-12-2023 06:52

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General

Target

5ad9f6be601fb9f23677c239c91deae2.exe
Size

313KB
MD5

5ad9f6be601fb9f23677c239c91deae2
SHA1

a0162b62231692e94ca41aac27cec6063179a9da
SHA256

90a9ef1c549a9f2646f6c603e27570832f371d25d2fc4b967c96f55fa034e557
SHA512

60d3f39a18811ac40c3b5d14e34eaac8334627545c703006f25e297b5f2fe3669715ea7e92a44f05991a0567a14a79c6f8a239651f85738ec30f61ae790a8737
SSDEEP

6144:Vd53TvpHeIl0yL6PKXDiFachVUGeUap2nRcUn3GYUKxn8gNMoPPUbyK+LwiwT6Z8:Vd53TvpHeIl0yL6muFxhSGeunagIsnBY

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 2436 set thread context of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2756	1936	WerFault.exe	28

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2436	5ad9f6be601fb9f23677c239c91deae2.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28
PID 2436 wrote to memory of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28
PID 2436 wrote to memory of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28
PID 2436 wrote to memory of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28
PID 2436 wrote to memory of 1936	2436	5ad9f6be601fb9f23677c239c91deae2.exe	28
PID 1936 wrote to memory of 2756	1936	5ad9f6be601fb9f23677c239c91deae2.exe	31
PID 1936 wrote to memory of 2756	1936	5ad9f6be601fb9f23677c239c91deae2.exe	31
PID 1936 wrote to memory of 2756	1936	5ad9f6be601fb9f23677c239c91deae2.exe	31
PID 1936 wrote to memory of 2756	1936	5ad9f6be601fb9f23677c239c91deae2.exe	31

C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
  "C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1936 -s 776
    3⤵
    - Program crash
    PID:2756

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/1936-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2436-1-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2436-2-0x0000000000280000-0x0000000000282000-memory.dmp

Filesize
8KB

Download