Malware Analysis Report

2025-03-15 00:51

Sample ID 240626-t44krswarl
Target 12ab006815614f2ad93358a7a03f7441_JaffaCakes118
SHA256 f19d07fbccb4bbf733cc55c967097e5cef053cd0c9188c10a5f138ea92929cb0
Tags
upx defense_evasion evasion persistence
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

f19d07fbccb4bbf733cc55c967097e5cef053cd0c9188c10a5f138ea92929cb0

Threat Level: Known bad

The file 12ab006815614f2ad93358a7a03f7441_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

upx defense_evasion evasion persistence

Modifies WinLogon for persistence

Disables Task Manager via registry modification

Impair Defenses: Safe Mode Boot

Checks computer location settings

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Kills process with taskkill

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 16:37

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 16:37

Reported

2024-06-26 16:40

Platform

win7-20240611-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe\"" C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A

Disables Task Manager via registry modification

evasion

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A

UPX packed file

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

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

Network

N/A

Files

memory/2208-1-0x0000000000220000-0x0000000000222000-memory.dmp

memory/2208-2-0x0000000000400000-0x000000000045C000-memory.dmp

memory/2208-0-0x0000000000400000-0x000000000045C000-memory.dmp

memory/2208-3-0x0000000000400000-0x000000000045C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 16:37

Reported

2024-06-26 16:40

Platform

win10v2004-20240508-en

Max time kernel

140s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe\"" C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A

Disables Task Manager via registry modification

evasion

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A

Impair Defenses: Safe Mode Boot

defense_evasion
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe N/A

UPX packed file

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

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\12ab006815614f2ad93358a7a03f7441_JaffaCakes118.exe"

C:\Windows\SysWOW64\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 101.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/4988-0-0x0000000000400000-0x000000000045C000-memory.dmp

memory/4988-1-0x00000000005B0000-0x00000000005B2000-memory.dmp

memory/4988-2-0x0000000000400000-0x000000000045C000-memory.dmp

memory/4988-3-0x0000000000400000-0x000000000045C000-memory.dmp