Malware Analysis Report

2024-09-22 21:54

Sample ID 240718-evcy5avcpl
Target 561b47e434227876ba3657cb681bb31b_JaffaCakes118
SHA256 a22f28ef4f876cd230e6f5137c3baf87ad63b6bbfa2909c762a358bc75699f5a
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

a22f28ef4f876cd230e6f5137c3baf87ad63b6bbfa2909c762a358bc75699f5a

Threat Level: Known bad

The file 561b47e434227876ba3657cb681bb31b_JaffaCakes118 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 SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-18 04:15

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-18 04:15

Reported

2024-07-18 04:17

Platform

win7-20240705-en

Max time kernel

140s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2372 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
PID 2372 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
PID 2372 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
PID 2372 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
PID 2372 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
PID 2700 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2700 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2700 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2700 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 764

Network

Country Destination Domain Proto
US 8.8.8.8:53 maurizio.ug udp

Files

memory/2372-2-0x0000000000270000-0x0000000000271000-memory.dmp

memory/2372-3-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2700-4-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2700-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2700-9-0x0000000000400000-0x0000000000434000-memory.dmp

memory/2700-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2700-10-0x0000000000400000-0x0000000000434000-memory.dmp

memory/2700-12-0x0000000000400000-0x0000000000434000-memory.dmp

memory/2700-13-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-18 04:15

Reported

2024-07-18 04:17

Platform

win10v2004-20240709-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3800 -ip 3800

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1300

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 maurizio.ug udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/1084-2-0x00000000777D2000-0x00000000777D3000-memory.dmp

memory/1084-3-0x0000000000A70000-0x0000000000A71000-memory.dmp

memory/1084-4-0x0000000002330000-0x0000000002336000-memory.dmp

memory/3800-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-10-0x0000000000400000-0x0000000000434000-memory.dmp

memory/3800-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-15-0x0000000000400000-0x0000000000434000-memory.dmp