Malware Analysis Report

2024-10-19 08:42

Sample ID 240421-ctf82sge95
Target fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118
SHA256 24520b47857fb9bf8e12eaee60ac2b7ba62373b2822e180e0b20f75fd2987cf6
Tags
quasar office04 persistence spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

24520b47857fb9bf8e12eaee60ac2b7ba62373b2822e180e0b20f75fd2987cf6

Threat Level: Known bad

The file fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

quasar office04 persistence spyware trojan

Quasar RAT

Quasar payload

Adds Run key to start application

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-21 02:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-21 02:21

Reported

2024-04-21 02:24

Platform

win7-20240221-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\OperaSetups = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker\\RuntimeBroker.exe" C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 568

Network

N/A

Files

memory/2084-1-0x0000000074BF0000-0x00000000752DE000-memory.dmp

memory/2084-0-0x0000000001240000-0x0000000001760000-memory.dmp

memory/2084-3-0x0000000000B60000-0x0000000000BE4000-memory.dmp

memory/2084-4-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-21 02:21

Reported

2024-04-21 02:24

Platform

win10v2004-20240412-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\OperaSetups = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker\\RuntimeBroker.exe" C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3712 -ip 3712

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 980

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 67.32.209.4.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 48.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

memory/3712-0-0x0000000074AA0000-0x0000000075250000-memory.dmp

memory/3712-1-0x0000000000620000-0x0000000000B40000-memory.dmp

memory/3712-2-0x0000000005510000-0x00000000055AC000-memory.dmp

memory/3712-3-0x0000000005B60000-0x0000000006104000-memory.dmp

memory/3712-5-0x00000000055B0000-0x0000000005634000-memory.dmp

memory/3712-6-0x0000000074AA0000-0x0000000075250000-memory.dmp