Malware Analysis Report

2024-09-22 21:47

Sample ID 240114-k4mgtagdf2
Target 5ad9f6be601fb9f23677c239c91deae2
SHA256 90a9ef1c549a9f2646f6c603e27570832f371d25d2fc4b967c96f55fa034e557
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

90a9ef1c549a9f2646f6c603e27570832f371d25d2fc4b967c96f55fa034e557

Threat Level: Known bad

The file 5ad9f6be601fb9f23677c239c91deae2 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

2024-01-14 09:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-14 09:09

Reported

2024-01-14 09:12

Platform

win7-20231215-en

Max time kernel

141s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1860 set thread context of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1860 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
PID 1860 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
PID 1860 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
PID 1860 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
PID 1860 wrote to memory of 1876 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe
PID 1876 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Windows\SysWOW64\WerFault.exe
PID 1876 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Windows\SysWOW64\WerFault.exe
PID 1876 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Windows\SysWOW64\WerFault.exe
PID 1876 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1876 -s 764

Network

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

Files

memory/1876-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1860-1-0x0000000000090000-0x0000000000190000-memory.dmp

memory/1876-4-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1876-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1876-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1876-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1860-9-0x0000000000090000-0x0000000000190000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-14 09:09

Reported

2024-01-14 09:11

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1004 -ip 1004

C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe

"C:\Users\Admin\AppData\Local\Temp\5ad9f6be601fb9f23677c239c91deae2.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 364

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp

Files

memory/1004-2-0x0000000000740000-0x0000000000742000-memory.dmp

memory/1004-1-0x00000000000A0000-0x00000000001A0000-memory.dmp