oski | 80b57df21ba993430e49e63e47f1afd84ac2f64fe50bb0b19413b2f964c42dd0

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06-02-2024 06:02

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General

Target

93fffc6736b1dd95a4f4e88734e9d540.exe
Size

252KB
MD5

93fffc6736b1dd95a4f4e88734e9d540
SHA1

509a9acffd9b9123fff2a3df9a860b829210f80a
SHA256

80b57df21ba993430e49e63e47f1afd84ac2f64fe50bb0b19413b2f964c42dd0
SHA512

d56d6e46792df1b06449265973e589559ff630ea2bcbcae54ffd0503188477605a63ca4db38f8e5e29d472368902e959f850226cf3ddaa2c0d6ba6ac3b87faed
SSDEEP

6144:vgELakzf1pZVv7cBBn3dELFmAD9/drJnguU9:lj75VcDEpHFJNU9

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

danielmax.ac.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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5100 set thread context of 2320	5100	93fffc6736b1dd95a4f4e88734e9d540.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1340	2320	WerFault.exe	90

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5100	93fffc6736b1dd95a4f4e88734e9d540.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5100	93fffc6736b1dd95a4f4e88734e9d540.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 2320	5100	93fffc6736b1dd95a4f4e88734e9d540.exe	90
PID 5100 wrote to memory of 2320	5100	93fffc6736b1dd95a4f4e88734e9d540.exe	90
PID 5100 wrote to memory of 2320	5100	93fffc6736b1dd95a4f4e88734e9d540.exe	90
PID 5100 wrote to memory of 2320	5100	93fffc6736b1dd95a4f4e88734e9d540.exe	90

C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
  "C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"
  2⤵
  PID:2320
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 1328
    3⤵
    - Program crash
    PID:1340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2320 -ip 2320
1⤵
PID:3772

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/2320-5-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2320-6-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2320-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2320-9-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2320-10-0x0000000077D62000-0x0000000077D63000-memory.dmp

Filesize
4KB

Download
memory/2320-11-0x0000000002190000-0x0000000002191000-memory.dmp

Filesize
4KB

Download
memory/2320-14-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/2320-16-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/5100-2-0x0000000077D62000-0x0000000077D63000-memory.dmp

Filesize
4KB

Download
memory/5100-3-0x0000000000A40000-0x0000000000A41000-memory.dmp

Filesize
4KB

Download
memory/5100-4-0x0000000000A50000-0x0000000000A58000-memory.dmp

Filesize
32KB

Download