Malware Analysis Report

2025-03-14 22:36

Sample ID 240406-r88n6scf91
Target e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118
SHA256 0f8fbeb34f24024899a10ce041b35133c400e00860dec0c6de9faddc24f8e713
Tags
persistence
score
8/10

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
8/10

SHA256

0f8fbeb34f24024899a10ce041b35133c400e00860dec0c6de9faddc24f8e713

Threat Level: Likely malicious

The file e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence

Modifies AppInit DLL entries

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Modifies data under HKEY_USERS

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 14:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 14:52

Reported

2024-04-06 14:53

Platform

win7-20240215-en

Max time kernel

6s

Max time network

6s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe"

Signatures

Modifies AppInit DLL entries

persistence

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\gucdmqa.dll C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x1

Network

N/A

Files

memory/1756-1-0x0000000001000000-0x0000000001020000-memory.dmp

memory/1756-0-0x0000000001000000-0x0000000001020000-memory.dmp

memory/1756-2-0x0000000000330000-0x0000000000331000-memory.dmp

memory/3060-5-0x0000000002DE0000-0x0000000002DE1000-memory.dmp

memory/3064-6-0x0000000002AB0000-0x0000000002AB1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 14:52

Reported

2024-04-06 14:53

Platform

win10v2004-20240226-en

Max time kernel

17s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe"

Signatures

Modifies AppInit DLL entries

persistence

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\dvzymlb.dll C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "117" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2c93641dec4e299a2ab1423f6c661b3_JaffaCakes118.exe"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa39a4855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 13.107.246.64:443 tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp

Files

memory/516-0-0x0000000001000000-0x0000000001020000-memory.dmp

memory/516-2-0x0000000000D40000-0x0000000000D41000-memory.dmp

memory/516-1-0x0000000001000000-0x0000000001020000-memory.dmp

memory/516-3-0x0000000001000000-0x0000000001020000-memory.dmp