Malware Analysis Report

2025-01-22 12:40

Sample ID 240622-xx7kmavdrn
Target 0391b3974634264f55093f682c0568e1_JaffaCakes118
SHA256 147d359ed39c5b5c4bf99afcbb8c49e129413d682fec4677e0274a3d2640d005
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

147d359ed39c5b5c4bf99afcbb8c49e129413d682fec4677e0274a3d2640d005

Threat Level: Shows suspicious behavior

The file 0391b3974634264f55093f682c0568e1_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 19:15

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 19:15

Reported

2024-06-22 19:17

Platform

win7-20240611-en

Max time kernel

118s

Max time network

123s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0391b3974634264f55093f682c0568e1_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\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0\win32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\FLAGS\ = "0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\FLAGS C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\HELPDIR 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\{47EDC62E-1F83-49E3-83D6-0679E1C97BD6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader_s.DLL\AppID = "{47EDC62E-1F83-49E3-83D6-0679E1C97BD6}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{47EDC62E-1F83-49E3-83D6-0679E1C97BD6}\ = "loader_s" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader_s.DLL C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\ = "loader_s 1.0 Type Library" 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 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2080 wrote to memory of 2664 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\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll

Network

N/A

Files

memory/2664-0-0x0000000074CC0000-0x0000000074D07000-memory.dmp

memory/2664-1-0x0000000000240000-0x0000000000270000-memory.dmp

memory/2664-2-0x0000000000140000-0x0000000000143000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 19:15

Reported

2024-06-22 19:17

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

153s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll

Signatures

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\loader_s.DLL C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\ = "loader_s 1.0 Type Library" 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\loader_s.DLL\AppID = "{47EDC62E-1F83-49E3-83D6-0679E1C97BD6}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\FLAGS C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\FLAGS\ = "0" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0\win32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{47EDC62E-1F83-49E3-83D6-0679E1C97BD6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{47EDC62E-1F83-49E3-83D6-0679E1C97BD6}\ = "loader_s" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\1.0 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C239C130-E16D-4151-81F8-85E3B6A647C0}\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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3580 wrote to memory of 880 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3580 wrote to memory of 880 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3580 wrote to memory of 880 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\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0391b3974634264f55093f682c0568e1_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 97.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 35.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp

Files

memory/880-1-0x0000000000820000-0x0000000000850000-memory.dmp

memory/880-0-0x0000000074C90000-0x0000000074CD7000-memory.dmp

memory/880-2-0x00000000007F0000-0x00000000007F3000-memory.dmp

memory/880-33-0x0000000002330000-0x0000000002331000-memory.dmp

memory/880-32-0x0000000002300000-0x0000000002301000-memory.dmp

memory/880-31-0x0000000002310000-0x0000000002311000-memory.dmp

memory/880-30-0x00000000022E0000-0x00000000022E1000-memory.dmp

memory/880-29-0x00000000022F0000-0x00000000022F1000-memory.dmp

memory/880-28-0x00000000022C0000-0x00000000022C1000-memory.dmp

memory/880-27-0x00000000022D0000-0x00000000022D1000-memory.dmp

memory/880-26-0x00000000022A0000-0x00000000022A1000-memory.dmp

memory/880-25-0x00000000022B0000-0x00000000022B1000-memory.dmp

memory/880-24-0x0000000002280000-0x0000000002281000-memory.dmp

memory/880-23-0x0000000002290000-0x0000000002291000-memory.dmp

memory/880-22-0x0000000002260000-0x0000000002261000-memory.dmp

memory/880-21-0x0000000002270000-0x0000000002271000-memory.dmp

memory/880-20-0x0000000002240000-0x0000000002241000-memory.dmp

memory/880-19-0x0000000002250000-0x0000000002251000-memory.dmp

memory/880-18-0x0000000002210000-0x0000000002211000-memory.dmp

memory/880-17-0x0000000002220000-0x0000000002221000-memory.dmp

memory/880-16-0x00000000021F0000-0x00000000021F1000-memory.dmp

memory/880-15-0x0000000002200000-0x0000000002201000-memory.dmp

memory/880-14-0x00000000021D0000-0x00000000021D1000-memory.dmp

memory/880-13-0x00000000021E0000-0x00000000021E1000-memory.dmp

memory/880-12-0x00000000021B0000-0x00000000021B1000-memory.dmp

memory/880-11-0x00000000021C0000-0x00000000021C1000-memory.dmp

memory/880-10-0x0000000002190000-0x0000000002191000-memory.dmp

memory/880-9-0x00000000021A0000-0x00000000021A1000-memory.dmp

memory/880-8-0x0000000002170000-0x0000000002171000-memory.dmp

memory/880-7-0x0000000002180000-0x0000000002181000-memory.dmp

memory/880-6-0x0000000000740000-0x0000000000741000-memory.dmp

memory/880-5-0x0000000000730000-0x0000000000731000-memory.dmp

memory/880-4-0x0000000000800000-0x0000000000801000-memory.dmp

memory/880-3-0x00000000007E0000-0x00000000007E1000-memory.dmp

memory/880-34-0x0000000002330000-0x0000000002331000-memory.dmp