Malware Analysis Report

2024-09-22 21:48

Sample ID 240101-k3mq7aaaf2
Target 3c7485ba08cb4cb5c9af2fd0e670efee
SHA256 e5c692ae3dc9c88bd07613f088686835c2e4ea2755c6abbdc01bac7bce5b924a
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

e5c692ae3dc9c88bd07613f088686835c2e4ea2755c6abbdc01bac7bce5b924a

Threat Level: Known bad

The file 3c7485ba08cb4cb5c9af2fd0e670efee 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

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-01-01 09:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-01 09:07

Reported

2024-01-11 01:41

Platform

win7-20231215-en

Max time kernel

122s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2708 set thread context of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2708 wrote to memory of 1440 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 1440 wrote to memory of 856 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Windows\SysWOW64\WerFault.exe
PID 1440 wrote to memory of 856 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Windows\SysWOW64\WerFault.exe
PID 1440 wrote to memory of 856 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Windows\SysWOW64\WerFault.exe
PID 1440 wrote to memory of 856 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1440 -s 256

Network

Country Destination Domain Proto
US 8.8.8.8:53 2tril.com udp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 15.197.148.33:80 2tril.com tcp
US 15.197.148.33:80 2tril.com tcp
US 15.197.148.33:80 2tril.com tcp
US 15.197.148.33:80 2tril.com tcp
US 15.197.148.33:80 2tril.com tcp

Files

memory/2708-0-0x0000000074B90000-0x000000007527E000-memory.dmp

memory/2708-1-0x00000000009C0000-0x0000000000ADA000-memory.dmp

memory/2708-2-0x0000000004E80000-0x0000000004EC0000-memory.dmp

memory/2708-3-0x0000000000400000-0x000000000041C000-memory.dmp

memory/2708-4-0x0000000074B90000-0x000000007527E000-memory.dmp

memory/2708-5-0x0000000004E80000-0x0000000004EC0000-memory.dmp

memory/2708-6-0x00000000055A0000-0x0000000005640000-memory.dmp

memory/2708-7-0x0000000005740000-0x00000000057B6000-memory.dmp

memory/1440-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1440-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2708-21-0x0000000074B90000-0x000000007527E000-memory.dmp

memory/1440-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1440-19-0x0000000000400000-0x0000000000438000-memory.dmp

C:\ProgramData\msvcp140.dll

MD5 8b181bb6767bc5795dcf17341a387e5b
SHA1 b5e2a9fb1f8a4aad3c7127c769af4c780b47bef4
SHA256 32cbc376cd769a26d108ae31678f975b863b7066e110c59d9a212c7281bd8c81
SHA512 2550b61ffa1ef8dd2613704798e3a717321c8e3569849dcbfb3049f441b8bccf9287b7139f3cef3371c1bb0476da31523e5e83b6a81af3ebc4d91142e06c76c6

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-01 09:07

Reported

2024-01-11 01:41

Platform

win10v2004-20231222-en

Max time kernel

137s

Max time network

103s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2632 set thread context of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
PID 2632 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe

"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4252 -ip 4252

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4252 -s 1328

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 21.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 2tril.com udp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 8.8.8.8:53 190.130.33.3.in-addr.arpa udp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
US 3.33.130.190:80 2tril.com tcp
N/A 20.231.121.79:80 tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.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 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

memory/2632-1-0x0000000074A40000-0x00000000751F0000-memory.dmp

memory/2632-2-0x0000000005860000-0x0000000005E04000-memory.dmp

memory/2632-3-0x0000000005350000-0x00000000053E2000-memory.dmp

memory/2632-4-0x00000000054D0000-0x00000000054E0000-memory.dmp

memory/2632-5-0x0000000005330000-0x000000000533A000-memory.dmp

memory/2632-0-0x0000000000810000-0x000000000092A000-memory.dmp

memory/2632-7-0x00000000066B0000-0x000000000674C000-memory.dmp

memory/2632-6-0x00000000054A0000-0x00000000054BC000-memory.dmp

memory/2632-8-0x0000000074A40000-0x00000000751F0000-memory.dmp

memory/2632-9-0x00000000054D0000-0x00000000054E0000-memory.dmp

memory/2632-10-0x0000000006DE0000-0x0000000006E80000-memory.dmp

memory/2632-11-0x00000000093D0000-0x0000000009446000-memory.dmp

memory/4252-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4252-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4252-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2632-16-0x0000000074A40000-0x00000000751F0000-memory.dmp

memory/4252-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4252-28-0x0000000000400000-0x0000000000438000-memory.dmp