Malware Analysis Report

2024-09-22 21:49

Sample ID 240201-aktfxafca9
Target 856df5370f692333d93945dc1c5483a5
SHA256 2eb191ee2a979725dd5fccac5a356c688a234f55f95c74b4f8eacfcd35b74ca1
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2eb191ee2a979725dd5fccac5a356c688a234f55f95c74b4f8eacfcd35b74ca1

Threat Level: Known bad

The file 856df5370f692333d93945dc1c5483a5 was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-02-01 00:16

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-01 00:16

Reported

2024-02-01 00:19

Platform

win7-20231129-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2220 set thread context of 2036 N/A C:\Users\Admin\AppData\Local\Temp\Items.exe C:\Users\Admin\AppData\Local\Temp\Items.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Items.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Items.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Items.exe

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

C:\Users\Admin\AppData\Local\Temp\Items.exe

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 768

Network

Country Destination Domain Proto
US 8.8.8.8:53 edkark.xyz udp

Files

memory/2220-1-0x0000000000090000-0x0000000000190000-memory.dmp

memory/2220-2-0x00000000002D0000-0x00000000002D2000-memory.dmp

memory/2036-3-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2036-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2036-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2036-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2036-9-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-01 00:16

Reported

2024-02-01 00:19

Platform

win10v2004-20231215-en

Max time kernel

143s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1724 set thread context of 1716 N/A C:\Users\Admin\AppData\Local\Temp\Items.exe C:\Users\Admin\AppData\Local\Temp\Items.exe

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\Items.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Items.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Items.exe

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

C:\Users\Admin\AppData\Local\Temp\Items.exe

"C:\Users\Admin\AppData\Local\Temp\Items.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1716 -ip 1716

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 1292

Network

Country Destination Domain Proto
US 8.8.8.8:53 edkark.xyz udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
GB 96.16.110.41:443 tcp
SE 192.229.221.95:80 tcp
US 8.8.8.8:53 11.179.89.13.in-addr.arpa udp

Files

memory/1724-1-0x00000000000A0000-0x00000000001A0000-memory.dmp

memory/1724-2-0x0000000000A70000-0x0000000000A72000-memory.dmp

memory/1716-3-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1716-4-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1716-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1716-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1716-9-0x0000000000400000-0x0000000000438000-memory.dmp