Malware Analysis Report

2025-01-22 20:39

Sample ID 241019-x9wc5awfmn
Target 5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118
SHA256 93d89249e93de9de89368ca9802700f7524bb3544d1792846978bfd484787b47
Tags
defense_evasion discovery evasion ransomware
score
9/10

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
9/10

SHA256

93d89249e93de9de89368ca9802700f7524bb3544d1792846978bfd484787b47

Threat Level: Likely malicious

The file 5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

defense_evasion discovery evasion ransomware

Modifies boot configuration data using bcdedit

Drops file in Drivers directory

Enables test signing to bypass driver trust controls

Executes dropped EXE

Indicator Removal: File Deletion

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: RenamesItself

Modifies data under HKEY_USERS

Suspicious behavior: LoadsDriver

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-19 19:33

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-19 19:33

Reported

2024-10-19 19:33

Platform

win7-20240903-en

Max time kernel

0s

Max time network

12s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe"

Signatures

Indicator Removal: File Deletion

defense_evasion

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe"

C:\Windows\Installer\{F6AD043A-BB11-BB22-BD1F-0D589D267313}\syshost.exe

"C:\Windows\Installer\{F6AD043A-BB11-BB22-BD1F-0D589D267313}\syshost.exe" /service

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\ad0d72b2.tmp"

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x1

Network

N/A

Files

memory/2192-0-0x0000000001FE0000-0x0000000002040000-memory.dmp

memory/2192-3-0x0000000000400000-0x000000000045A000-memory.dmp

memory/2776-5-0x0000000000400000-0x000000000045A000-memory.dmp

memory/2192-9-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2776-10-0x0000000000400000-0x000000000045A000-memory.dmp

memory/2192-8-0x0000000000400000-0x000000000045A000-memory.dmp

memory/2776-7-0x0000000000400000-0x000000000045A000-memory.dmp

C:\Windows\Installer\{F6AD043A-BB11-BB22-BD1F-0D589D267313}\syshost.exe

MD5 5e4b8716938c67585fc9ef03ba9d434b
SHA1 37a80a589511db39263bd13c11024c25063adb16
SHA256 93d89249e93de9de89368ca9802700f7524bb3544d1792846978bfd484787b47
SHA512 6b29d922b028e2a4658c5ac75834cd88eef19053083915f88f4c767b76b8664c6c628737e955154e45f1f195db0ec3a74c03915bd4c49f9e83fa9877eafdd54b

memory/2192-1-0x0000000000400000-0x0000000000435000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-19 19:33

Reported

2024-10-19 19:34

Platform

win10v2004-20241007-en

Max time kernel

3s

Max time network

8s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\e579d69.sys C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe N/A

Indicator Removal: File Deletion

defense_evasion

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe.tmp C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe N/A
File created C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe N/A
File opened for modification C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.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\DWM\ColorizationColor = "3288365271" 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\CurrentVersion\Themes\History\AutoColor = "0" 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
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\ColorizationBlurBalance = "1" 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\ColorizationColorBalance = "89" 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
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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" 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\DWM\EnableWindowColorization = "194" C:\Windows\system32\LogonUI.exe N/A

Suspicious behavior: LoadsDriver

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

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1376 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1376 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1376 wrote to memory of 4092 N/A C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4788 wrote to memory of 3676 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 3676 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 112 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 112 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 244 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 244 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 3348 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 3348 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 3460 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 3460 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4432 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4432 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4040 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4040 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 5052 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 5052 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 2124 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 2124 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4488 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe
PID 4788 wrote to memory of 4488 N/A C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe C:\Windows\SYSTEM32\bcdedit.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\5e4b8716938c67585fc9ef03ba9d434b_JaffaCakes118.exe"

C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe

"C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe" /service

C:\Windows\SysWOW64\cmd.exe

cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\688ec761.tmp"

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\SYSTEM32\bcdedit.exe

bcdedit.exe -set TESTSIGNING ON

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa392b055 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 69.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp

Files

memory/1376-0-0x0000000002310000-0x0000000002370000-memory.dmp

memory/1376-1-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1376-2-0x0000000000400000-0x000000000045A000-memory.dmp

C:\Windows\Installer\{35C3F1B4-A880-BB27-ABAC-0D798BB360A7}\syshost.exe

MD5 5e4b8716938c67585fc9ef03ba9d434b
SHA1 37a80a589511db39263bd13c11024c25063adb16
SHA256 93d89249e93de9de89368ca9802700f7524bb3544d1792846978bfd484787b47
SHA512 6b29d922b028e2a4658c5ac75834cd88eef19053083915f88f4c767b76b8664c6c628737e955154e45f1f195db0ec3a74c03915bd4c49f9e83fa9877eafdd54b

memory/4788-6-0x0000000000400000-0x000000000045A000-memory.dmp

memory/4788-7-0x0000000000400000-0x000000000045A000-memory.dmp

memory/1376-11-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1376-10-0x0000000000400000-0x000000000045A000-memory.dmp

memory/4788-13-0x0000000000400000-0x000000000045A000-memory.dmp