Malware Analysis Report

2025-01-22 12:42

Sample ID 240622-1g9xlavfla
Target 03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118
SHA256 1c88c909e1eacf678b285b2bb834ed5594b8fabb14b7edc88f895665b9c87c85
Tags
aspackv2 bootkit 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

1c88c909e1eacf678b285b2bb834ed5594b8fabb14b7edc88f895665b9c87c85

Threat Level: Shows suspicious behavior

The file 03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 bootkit persistence

ASPack v2.12-2.42

Writes to the Master Boot Record (MBR)

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 21:38

Signatures

ASPack v2.12-2.42

aspackv2
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

2024-06-22 21:38

Reported

2024-06-22 21:41

Platform

win7-20240221-en

Max time kernel

122s

Max time network

124s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS\ = "0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL\AppID = "{D103EBF9-6DD5-4715-863A-00AA27C7935A}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\ = "loader 1.0 Type Library" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1948 wrote to memory of 2412 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

Network

N/A

Files

memory/2412-0-0x0000000010000000-0x0000000010046000-memory.dmp

memory/2412-1-0x00000000003F0000-0x0000000000420000-memory.dmp

memory/2412-2-0x00000000003D0000-0x00000000003D3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 21:38

Reported

2024-06-22 21:41

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

Signatures

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\ = "loader 1.0 Type Library" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS\ = "0" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader.DLL\AppID = "{D103EBF9-6DD5-4715-863A-00AA27C7935A}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2472 wrote to memory of 3984 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2472 wrote to memory of 3984 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2472 wrote to memory of 3984 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03f094c1b801eb2d3d0b7c919bbb7ff1_JaffaCakes118.dll

Network

Files

memory/3984-0-0x0000000010000000-0x0000000010046000-memory.dmp

memory/3984-2-0x00000000024E0000-0x00000000024E3000-memory.dmp

memory/3984-1-0x0000000002500000-0x0000000002530000-memory.dmp

memory/3984-18-0x0000000002770000-0x0000000002771000-memory.dmp

memory/3984-48-0x0000000002A10000-0x0000000002A11000-memory.dmp

memory/3984-47-0x00000000029F0000-0x00000000029F1000-memory.dmp

memory/3984-46-0x0000000002A00000-0x0000000002A01000-memory.dmp

memory/3984-45-0x00000000029D0000-0x00000000029D1000-memory.dmp

memory/3984-44-0x00000000029E0000-0x00000000029E1000-memory.dmp

memory/3984-43-0x00000000029B0000-0x00000000029B1000-memory.dmp

memory/3984-42-0x0000000002990000-0x0000000002991000-memory.dmp

memory/3984-41-0x0000000002970000-0x0000000002971000-memory.dmp

memory/3984-40-0x0000000002980000-0x0000000002981000-memory.dmp

memory/3984-39-0x0000000002950000-0x0000000002951000-memory.dmp

memory/3984-38-0x0000000002960000-0x0000000002961000-memory.dmp

memory/3984-37-0x00000000028B0000-0x00000000028B1000-memory.dmp

memory/3984-36-0x00000000028C0000-0x00000000028C1000-memory.dmp

memory/3984-35-0x0000000002890000-0x0000000002891000-memory.dmp

memory/3984-34-0x00000000028A0000-0x00000000028A1000-memory.dmp

memory/3984-33-0x0000000002870000-0x0000000002871000-memory.dmp

memory/3984-32-0x0000000002880000-0x0000000002881000-memory.dmp

memory/3984-31-0x0000000002860000-0x0000000002861000-memory.dmp

memory/3984-30-0x0000000002820000-0x0000000002821000-memory.dmp

memory/3984-28-0x0000000002800000-0x0000000002801000-memory.dmp

memory/3984-27-0x0000000002810000-0x0000000002811000-memory.dmp

memory/3984-26-0x00000000027E0000-0x00000000027E1000-memory.dmp

memory/3984-25-0x00000000027F0000-0x00000000027F1000-memory.dmp

memory/3984-29-0x0000000002840000-0x0000000002841000-memory.dmp

memory/3984-24-0x00000000027C0000-0x00000000027C1000-memory.dmp

memory/3984-23-0x00000000027D0000-0x00000000027D1000-memory.dmp

memory/3984-22-0x00000000027B0000-0x00000000027B1000-memory.dmp

memory/3984-21-0x0000000002780000-0x0000000002781000-memory.dmp

memory/3984-20-0x0000000002790000-0x0000000002791000-memory.dmp

memory/3984-19-0x0000000002760000-0x0000000002761000-memory.dmp

memory/3984-17-0x0000000002740000-0x0000000002741000-memory.dmp

memory/3984-16-0x0000000002750000-0x0000000002751000-memory.dmp

memory/3984-15-0x0000000002730000-0x0000000002731000-memory.dmp

memory/3984-14-0x0000000002700000-0x0000000002701000-memory.dmp

memory/3984-13-0x0000000002710000-0x0000000002711000-memory.dmp

memory/3984-12-0x00000000026E0000-0x00000000026E1000-memory.dmp

memory/3984-11-0x00000000026F0000-0x00000000026F1000-memory.dmp

memory/3984-10-0x00000000026C0000-0x00000000026C1000-memory.dmp

memory/3984-9-0x00000000026D0000-0x00000000026D1000-memory.dmp

memory/3984-8-0x00000000026A0000-0x00000000026A1000-memory.dmp

memory/3984-7-0x00000000026B0000-0x00000000026B1000-memory.dmp

memory/3984-6-0x0000000000E90000-0x0000000000E91000-memory.dmp

memory/3984-5-0x0000000000A90000-0x0000000000A91000-memory.dmp

memory/3984-4-0x00000000024F0000-0x00000000024F1000-memory.dmp

memory/3984-3-0x00000000024D0000-0x00000000024D1000-memory.dmp