Malware Analysis Report

2025-01-03 04:59

Sample ID 220426-sdctpagghq
Target d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.zip
SHA256 83b9d5a3604bc5d23b2a48f211922b2054c64a75e271ff335a2ce8012a8a5ebc
Tags
oski infostealer persistence spyware stealer suricata
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

83b9d5a3604bc5d23b2a48f211922b2054c64a75e271ff335a2ce8012a8a5ebc

Threat Level: Known bad

The file d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.zip was found to be: Known bad.

Malicious Activity Summary

oski infostealer persistence spyware stealer suricata

Oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

Reads user/profile data of web browsers

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-26 15:00

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-26 15:00

Reported

2022-04-26 15:02

Platform

win7-20220414-en

Max time kernel

41s

Max time network

44s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

Signatures

Oski

infostealer oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

suricata

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\SgBSNdRiPF = "C:\\Users\\Admin\\AppData\\Roaming\\KmRwXJEbJF\\LgFMZzjLJE.exe" C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 2008 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 1996 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Windows\SysWOW64\WerFault.exe
PID 1996 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Windows\SysWOW64\WerFault.exe
PID 1996 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Windows\SysWOW64\WerFault.exe
PID 1996 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 764

Network

Country Destination Domain Proto
US 8.8.8.8:53 nutrileague.com udp
US 162.241.85.228:80 nutrileague.com tcp

Files

memory/2008-54-0x0000000001230000-0x000000000127E000-memory.dmp

memory/2008-55-0x0000000076191000-0x0000000076193000-memory.dmp

memory/2008-56-0x0000000000210000-0x000000000021A000-memory.dmp

memory/1996-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-67-0x000000000040717B-mapping.dmp

memory/1996-69-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1996-71-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2028-72-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-26 15:00

Reported

2022-04-26 15:02

Platform

win10v2004-20220414-en

Max time kernel

141s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

Signatures

Oski

infostealer oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

suricata

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\SgBSNdRiPF = "C:\\Users\\Admin\\AppData\\Roaming\\KmRwXJEbJF\\LgFMZzjLJE.exe" C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe
PID 3520 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe

"C:\Users\Admin\AppData\Local\Temp\d386560e46981c478094c1b87620185cea043810e589484f800462f5daa14935.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4324 -ip 4324

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1324

Network

Country Destination Domain Proto
US 8.8.8.8:53 nutrileague.com udp
US 162.241.85.228:80 nutrileague.com tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp

Files

memory/3520-130-0x0000000000670000-0x00000000006BE000-memory.dmp

memory/3520-131-0x00000000055B0000-0x0000000005B54000-memory.dmp

memory/3520-132-0x00000000050A0000-0x0000000005132000-memory.dmp

memory/3520-133-0x00000000051E0000-0x000000000527C000-memory.dmp

memory/4324-134-0x0000000000000000-mapping.dmp

memory/4324-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4324-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4324-137-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4324-138-0x0000000000400000-0x0000000000438000-memory.dmp