Malware Analysis Report

2025-01-22 12:40

Sample ID 240622-x5rjda1dre
Target 039d50fa95e370c7762ebd5870fc551f_JaffaCakes118
SHA256 57d2e9b5f3e9ce16f3ef0a59530ed993a58eac1d8611f6fc8101da64c7ebe2b6
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

57d2e9b5f3e9ce16f3ef0a59530ed993a58eac1d8611f6fc8101da64c7ebe2b6

Threat Level: Shows suspicious behavior

The file 039d50fa95e370c7762ebd5870fc551f_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 19:26

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 19:26

Reported

2024-06-22 19:29

Platform

win7-20240221-en

Max time kernel

118s

Max time network

120s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\039d50fa95e370c7762ebd5870fc551f_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
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\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\FLAGS 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
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\loader.DLL 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\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\HELPDIR 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\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\\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2240 wrote to memory of 2304 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\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll

Network

N/A

Files

memory/2304-0-0x0000000010000000-0x0000000010043000-memory.dmp

memory/2304-2-0x0000000000230000-0x0000000000233000-memory.dmp

memory/2304-1-0x0000000000200000-0x0000000000230000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 19:26

Reported

2024-06-22 19:29

Platform

win10v2004-20240611-en

Max time kernel

139s

Max time network

140s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll

Signatures

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C85E2990-D4B6-44F5-A323-ED943493F8DF}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll" 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
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{D103EBF9-6DD5-4715-863A-00AA27C7935A}\ = "loader" 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\HELPDIR 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\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\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 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
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\AppID\loader.DLL 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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3188 wrote to memory of 3708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3188 wrote to memory of 3708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3188 wrote to memory of 3708 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\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\039d50fa95e370c7762ebd5870fc551f_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 41.173.79.40.in-addr.arpa udp

Files

memory/3708-1-0x0000000010028000-0x0000000010029000-memory.dmp

memory/3708-0-0x0000000010000000-0x0000000010043000-memory.dmp

memory/3708-2-0x0000000010000000-0x0000000010043000-memory.dmp

memory/3708-42-0x0000000002900000-0x0000000002901000-memory.dmp

memory/3708-41-0x00000000028D0000-0x00000000028D1000-memory.dmp

memory/3708-40-0x00000000028E0000-0x00000000028E1000-memory.dmp

memory/3708-39-0x00000000028B0000-0x00000000028B1000-memory.dmp

memory/3708-38-0x00000000028C0000-0x00000000028C1000-memory.dmp

memory/3708-37-0x0000000002890000-0x0000000002891000-memory.dmp

memory/3708-36-0x00000000028A0000-0x00000000028A1000-memory.dmp

memory/3708-35-0x0000000002870000-0x0000000002871000-memory.dmp

memory/3708-34-0x0000000002880000-0x0000000002881000-memory.dmp

memory/3708-33-0x0000000002850000-0x0000000002851000-memory.dmp

memory/3708-32-0x0000000002860000-0x0000000002861000-memory.dmp

memory/3708-31-0x0000000002830000-0x0000000002831000-memory.dmp

memory/3708-30-0x0000000002840000-0x0000000002841000-memory.dmp

memory/3708-29-0x0000000002810000-0x0000000002811000-memory.dmp

memory/3708-28-0x0000000002820000-0x0000000002821000-memory.dmp

memory/3708-27-0x00000000027F0000-0x00000000027F1000-memory.dmp

memory/3708-26-0x0000000002800000-0x0000000002801000-memory.dmp

memory/3708-25-0x00000000027D0000-0x00000000027D1000-memory.dmp

memory/3708-24-0x00000000027E0000-0x00000000027E1000-memory.dmp

memory/3708-23-0x00000000027B0000-0x00000000027B1000-memory.dmp

memory/3708-22-0x00000000027C0000-0x00000000027C1000-memory.dmp

memory/3708-21-0x0000000002790000-0x0000000002791000-memory.dmp

memory/3708-20-0x00000000027A0000-0x00000000027A1000-memory.dmp

memory/3708-19-0x0000000002770000-0x0000000002771000-memory.dmp

memory/3708-18-0x0000000002780000-0x0000000002781000-memory.dmp

memory/3708-17-0x0000000002750000-0x0000000002751000-memory.dmp

memory/3708-16-0x0000000002760000-0x0000000002761000-memory.dmp

memory/3708-15-0x0000000002620000-0x0000000002621000-memory.dmp

memory/3708-14-0x0000000002740000-0x0000000002741000-memory.dmp

memory/3708-13-0x0000000002600000-0x0000000002601000-memory.dmp

memory/3708-12-0x0000000002610000-0x0000000002611000-memory.dmp

memory/3708-11-0x00000000025E0000-0x00000000025E1000-memory.dmp

memory/3708-10-0x00000000025F0000-0x00000000025F1000-memory.dmp

memory/3708-9-0x00000000025C0000-0x00000000025C1000-memory.dmp

memory/3708-8-0x00000000025D0000-0x00000000025D1000-memory.dmp

memory/3708-7-0x00000000025A0000-0x00000000025A1000-memory.dmp

memory/3708-6-0x00000000025B0000-0x00000000025B1000-memory.dmp

memory/3708-5-0x0000000000C10000-0x0000000000C11000-memory.dmp

memory/3708-4-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

memory/3708-3-0x0000000000C30000-0x0000000000C31000-memory.dmp

memory/3708-43-0x0000000002900000-0x0000000002901000-memory.dmp