oski | a1fb5c784bc7054210483191ef7a6c47da443b4283442de4eb0d297bce669751

Analysis

max time kernel
28s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02-01-2023 05:36

Target

c927fbf0a308f0a52924210896ab4efa.exe
Size

200KB
MD5

c927fbf0a308f0a52924210896ab4efa
SHA1

6e139eeb5094862192d5f260b2a62beec9b910f4
SHA256

a1fb5c784bc7054210483191ef7a6c47da443b4283442de4eb0d297bce669751
SHA512

801ec93cc41051deb1c07818f0935c8b0c087bcf9971e1c43dd1745a0556f6b52ea34f02dfd2d508c95a1ea4f19a3695545cf42c40fefe464c01a9997aa4c3de
SSDEEP

3072:WfUomEuYm98dlSq7gt5q7Dx+XgS6aCEwhOfUbCalNT2pbB3fI21Xi6FLPo3c:WfUauY68uSWCx+XA7mg2pNj1Ljo3c

Score

10^/10

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
T1081
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

524 1924 WerFault.exe c927fbf0a308f0a52924210896ab4efa.exe

pid	pid_target	process	target process
524	1924	WerFault.exe	c927fbf0a308f0a52924210896ab4efa.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c927fbf0a308f0a52924210896ab4efa.exe

description	pid	process	target process
PID 1924 wrote to memory of 524	1924	c927fbf0a308f0a52924210896ab4efa.exe	WerFault.exe
PID 1924 wrote to memory of 524	1924	c927fbf0a308f0a52924210896ab4efa.exe	WerFault.exe
PID 1924 wrote to memory of 524	1924	c927fbf0a308f0a52924210896ab4efa.exe	WerFault.exe
PID 1924 wrote to memory of 524	1924	c927fbf0a308f0a52924210896ab4efa.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\c927fbf0a308f0a52924210896ab4efa.exe
"C:\Users\Admin\AppData\Local\Temp\c927fbf0a308f0a52924210896ab4efa.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 772
2⤵
- Program crash
PID:524

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

Discovery

Lateral Movement

Collection

Data from Local System

Exfiltration

Command and Control

Impact

memory/524-55-0x0000000000000000-mapping.dmp

Download
memory/1924-54-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download