Malware Analysis Report

2025-03-14 23:47

Sample ID 240603-fylwwacg7s
Target 90a735151a77588219846f19ab4cff23_JaffaCakes118
SHA256 f0bf52dc1164a874bda22dabcc5ee73d370b411ea1152d62ea7a6d0e1e2e455e
Tags
persistence
score
7/10

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
7/10

SHA256

f0bf52dc1164a874bda22dabcc5ee73d370b411ea1152d62ea7a6d0e1e2e455e

Threat Level: Shows suspicious behavior

The file 90a735151a77588219846f19ab4cff23_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Drops startup file

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 05:16

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 05:16

Reported

2024-06-03 05:19

Platform

win7-20240508-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs C:\Windows\System32\WScript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs C:\Windows\System32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\WScript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\wscript.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\WScript.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2036 wrote to memory of 2788 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\wscript.exe
PID 2036 wrote to memory of 2788 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\wscript.exe
PID 2036 wrote to memory of 2788 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\wscript.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\ProgramData\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjjlinux.ddns.net udp

Files

C:\ProgramData\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs

MD5 90a735151a77588219846f19ab4cff23
SHA1 ccca632ea7f4c30f5e7775bd6965b798a3ffcaf0
SHA256 f0bf52dc1164a874bda22dabcc5ee73d370b411ea1152d62ea7a6d0e1e2e455e
SHA512 beabd1f5575f1e8e748db7b1aca482ce3b676fcf8113b55604bdf1bd950a7ecc6963d424f00f834ce4b1608aaa5bad391c66ec00dccffeda8a61a8944ff140ad

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 05:16

Reported

2024-06-03 05:19

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs C:\Windows\System32\WScript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs C:\Windows\System32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\WScript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\wscript.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\90a735151a77588219846f19ab4cff23_JaffaCakes118 = "wscript.exe //B \"C:\\ProgramData\\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs\"" C:\Windows\System32\WScript.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4356 wrote to memory of 3420 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\wscript.exe
PID 4356 wrote to memory of 3420 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\wscript.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\ProgramData\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjjlinux.ddns.net udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
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 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

C:\ProgramData\90a735151a77588219846f19ab4cff23_JaffaCakes118.vbs

MD5 90a735151a77588219846f19ab4cff23
SHA1 ccca632ea7f4c30f5e7775bd6965b798a3ffcaf0
SHA256 f0bf52dc1164a874bda22dabcc5ee73d370b411ea1152d62ea7a6d0e1e2e455e
SHA512 beabd1f5575f1e8e748db7b1aca482ce3b676fcf8113b55604bdf1bd950a7ecc6963d424f00f834ce4b1608aaa5bad391c66ec00dccffeda8a61a8944ff140ad