Malware Analysis Report

2025-03-15 05:47

Sample ID 240624-a6tnssvdkr
Target 05f58231bbe33184681a2d25857d58b6_JaffaCakes118
SHA256 d6327fea3c74a8f27ad2a24751577a50cf6954f1c44ae443d0d128a4b056cf57
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

d6327fea3c74a8f27ad2a24751577a50cf6954f1c44ae443d0d128a4b056cf57

Threat Level: Shows suspicious behavior

The file 05f58231bbe33184681a2d25857d58b6_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

Program crash

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-24 00:49

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

2024-06-24 00:49

Reported

2024-06-24 00:52

Platform

win7-20240508-en

Max time kernel

117s

Max time network

122s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_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\0\win32 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\.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
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\0 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
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\ = "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\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll" 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
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
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\HELPDIR C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2416 wrote to memory of 2444 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\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll

Network

N/A

Files

memory/2444-0-0x0000000010000000-0x0000000010040000-memory.dmp

memory/2444-1-0x00000000003C0000-0x00000000003F0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 00:49

Reported

2024-06-24 00:52

Platform

win10v2004-20240611-en

Max time kernel

140s

Max time network

124s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\regsvr32.exe

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key 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\.key\ = "regfile" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2836 wrote to memory of 4392 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2836 wrote to memory of 4392 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2836 wrote to memory of 4392 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\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\05f58231bbe33184681a2d25857d58b6_JaffaCakes118.dll

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4392 -ip 4392

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4392 -s 708

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/4392-0-0x0000000010000000-0x0000000010040000-memory.dmp

memory/4392-1-0x0000000000F00000-0x0000000000F30000-memory.dmp

memory/4392-2-0x0000000000CE0000-0x0000000000CE3000-memory.dmp

memory/4392-28-0x00000000029A0000-0x00000000029A1000-memory.dmp

memory/4392-27-0x00000000029B0000-0x00000000029B1000-memory.dmp

memory/4392-52-0x0000000002B30000-0x0000000002B31000-memory.dmp

memory/4392-51-0x0000000002B40000-0x0000000002B41000-memory.dmp

memory/4392-50-0x0000000002B10000-0x0000000002B11000-memory.dmp

memory/4392-49-0x0000000002B20000-0x0000000002B21000-memory.dmp

memory/4392-48-0x0000000002AF0000-0x0000000002AF1000-memory.dmp

memory/4392-47-0x0000000002B00000-0x0000000002B01000-memory.dmp

memory/4392-46-0x0000000002AD0000-0x0000000002AD1000-memory.dmp

memory/4392-45-0x0000000002AE0000-0x0000000002AE1000-memory.dmp

memory/4392-44-0x0000000002AB0000-0x0000000002AB1000-memory.dmp

memory/4392-43-0x0000000002AC0000-0x0000000002AC1000-memory.dmp

memory/4392-42-0x0000000002A90000-0x0000000002A91000-memory.dmp

memory/4392-41-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

memory/4392-40-0x0000000002A70000-0x0000000002A71000-memory.dmp

memory/4392-39-0x0000000002A80000-0x0000000002A81000-memory.dmp

memory/4392-38-0x0000000002A50000-0x0000000002A51000-memory.dmp

memory/4392-37-0x0000000002A60000-0x0000000002A61000-memory.dmp

memory/4392-36-0x0000000002A30000-0x0000000002A31000-memory.dmp

memory/4392-35-0x0000000002A40000-0x0000000002A41000-memory.dmp

memory/4392-34-0x0000000002A10000-0x0000000002A11000-memory.dmp

memory/4392-33-0x0000000002A20000-0x0000000002A21000-memory.dmp

memory/4392-32-0x00000000029E0000-0x00000000029E1000-memory.dmp

memory/4392-31-0x00000000029F0000-0x00000000029F1000-memory.dmp

memory/4392-30-0x00000000029C0000-0x00000000029C1000-memory.dmp

memory/4392-29-0x00000000029D0000-0x00000000029D1000-memory.dmp

memory/4392-26-0x0000000002980000-0x0000000002981000-memory.dmp

memory/4392-25-0x0000000002990000-0x0000000002991000-memory.dmp

memory/4392-24-0x0000000002960000-0x0000000002961000-memory.dmp

memory/4392-23-0x0000000002970000-0x0000000002971000-memory.dmp

memory/4392-22-0x0000000002940000-0x0000000002941000-memory.dmp

memory/4392-21-0x0000000002950000-0x0000000002951000-memory.dmp

memory/4392-20-0x0000000002920000-0x0000000002921000-memory.dmp

memory/4392-19-0x0000000002930000-0x0000000002931000-memory.dmp

memory/4392-18-0x0000000002900000-0x0000000002901000-memory.dmp

memory/4392-17-0x0000000002910000-0x0000000002911000-memory.dmp

memory/4392-16-0x00000000028E0000-0x00000000028E1000-memory.dmp

memory/4392-15-0x00000000028F0000-0x00000000028F1000-memory.dmp

memory/4392-14-0x00000000028C0000-0x00000000028C1000-memory.dmp

memory/4392-13-0x00000000028D0000-0x00000000028D1000-memory.dmp

memory/4392-12-0x00000000028A0000-0x00000000028A1000-memory.dmp

memory/4392-11-0x00000000028B0000-0x00000000028B1000-memory.dmp

memory/4392-10-0x0000000002880000-0x0000000002881000-memory.dmp

memory/4392-9-0x0000000002890000-0x0000000002891000-memory.dmp

memory/4392-7-0x0000000002870000-0x0000000002871000-memory.dmp

memory/4392-5-0x00000000009E0000-0x00000000009E1000-memory.dmp

memory/4392-4-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

memory/4392-3-0x0000000000CD0000-0x0000000000CD1000-memory.dmp

memory/4392-8-0x0000000002860000-0x0000000002861000-memory.dmp

memory/4392-6-0x00000000009F0000-0x00000000009F1000-memory.dmp

memory/4392-53-0x0000000010000000-0x0000000010040000-memory.dmp

memory/4392-54-0x0000000002B50000-0x0000000002B51000-memory.dmp

memory/4392-55-0x0000000000F00000-0x0000000000F30000-memory.dmp