oski | 6f9991b2dbb68f2cb2f1846a641e54857cc5a1b3f683e7883ac85e3a040987d1

Analysis

max time kernel
185s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-12-2023 09:32

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General

Target

d62e7eaa8e9524f1094f2ee37b31c09f.exe
Size

444KB
MD5

d62e7eaa8e9524f1094f2ee37b31c09f
SHA1

51e9baed09ebf7407f8a01d34dca55ee0c4ca4fa
SHA256

6f9991b2dbb68f2cb2f1846a641e54857cc5a1b3f683e7883ac85e3a040987d1
SHA512

9ce436aab531a981392a3f00fc359a9fd6e36c10b4a24437c3ab60693ac4c6e3a0927ac0f174027bb5598b71ad0074aceaaaf4e3366cb13ec678636be1a56bc5
SSDEEP

12288:wftNDGolZaBiJ18uFxhSGevmVoF10YlrWn:U1HJ1JiGeeVglk

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

edkark.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 836 set thread context of 3396	836	d62e7eaa8e9524f1094f2ee37b31c09f.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
776	3396	WerFault.exe	90

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
836	d62e7eaa8e9524f1094f2ee37b31c09f.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 3396	836	d62e7eaa8e9524f1094f2ee37b31c09f.exe	90
PID 836 wrote to memory of 3396	836	d62e7eaa8e9524f1094f2ee37b31c09f.exe	90
PID 836 wrote to memory of 3396	836	d62e7eaa8e9524f1094f2ee37b31c09f.exe	90
PID 836 wrote to memory of 3396	836	d62e7eaa8e9524f1094f2ee37b31c09f.exe	90

C:\Users\Admin\AppData\Local\Temp\d62e7eaa8e9524f1094f2ee37b31c09f.exe
"C:\Users\Admin\AppData\Local\Temp\d62e7eaa8e9524f1094f2ee37b31c09f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\d62e7eaa8e9524f1094f2ee37b31c09f.exe
  "C:\Users\Admin\AppData\Local\Temp\d62e7eaa8e9524f1094f2ee37b31c09f.exe"
  2⤵
  PID:3396
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3396 -s 1284
    3⤵
    - Program crash
    PID:776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3396 -ip 3396
1⤵
PID:1348

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/836-1-0x00000000000A0000-0x00000000001A0000-memory.dmp

Filesize
1024KB

Download
memory/836-2-0x00000000006C0000-0x00000000006C2000-memory.dmp

Filesize
8KB

Download
memory/3396-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3396-4-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3396-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3396-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3396-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3396-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download