Malware Analysis Report

2025-01-22 12:42

Sample ID 240622-1tr8bazfjq
Target 040331d5f726724353d28ef0a3931aa0_JaffaCakes118
SHA256 cb2ab3d195e994a9fbd32a4771ca8e953e7fd2d76e8e4a8e1aec46d1f34a0788
Tags
aspackv2 persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

cb2ab3d195e994a9fbd32a4771ca8e953e7fd2d76e8e4a8e1aec46d1f34a0788

Threat Level: Shows suspicious behavior

The file 040331d5f726724353d28ef0a3931aa0_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 persistence

Executes dropped EXE

Loads dropped DLL

ASPack v2.12-2.42

Deletes itself

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 21:56

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: behavioral2

Detonation Overview

Submitted

2024-06-22 21:56

Reported

2024-06-22 21:59

Platform

win10v2004-20240508-en

Max time kernel

140s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe"

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1u7.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1u7.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1u7 = "C:\\Windows\\SysWOW64\\1u7.exe" C:\Windows\SysWOW64\1u7.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\1u7 = "C:\\Windows\\SysWOW64\\1u7.exe" C:\Windows\SysWOW64\1u7.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\1u7.exe C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\1u7.exe C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe"

C:\Windows\SysWOW64\1u7.exe

*C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe

Network

Country Destination Domain Proto
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp

Files

memory/756-3-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\SysWOW64\1u7.exe

MD5 040331d5f726724353d28ef0a3931aa0
SHA1 9f67af147872fbeeb4c6ab595b322298a79f7f4f
SHA256 cb2ab3d195e994a9fbd32a4771ca8e953e7fd2d76e8e4a8e1aec46d1f34a0788
SHA512 ed5beb3deebfa88eb02e74c5bcae45231705eb14fe8d64b0f14c6e6aff47087ed9941a992eea95a76bb68fb133ced8f580ff1f34a3eb6f9ed5e24800f778e1ad

memory/2384-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-11-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-13-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-15-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2384-18-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 21:56

Reported

2024-06-22 21:59

Platform

win7-20240611-en

Max time kernel

142s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe"

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1u7.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1u7.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\1u7 = "C:\\Windows\\SysWOW64\\1u7.exe" C:\Windows\SysWOW64\1u7.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\1u7 = "C:\\Windows\\SysWOW64\\1u7.exe" C:\Windows\SysWOW64\1u7.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\1u7.exe C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\1u7.exe C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe"

C:\Windows\SysWOW64\1u7.exe

*C:\Users\Admin\AppData\Local\Temp\040331d5f726724353d28ef0a3931aa0_JaffaCakes118.exe

Network

Country Destination Domain Proto
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp
FI 195.225.176.56:7777 tcp

Files

\Windows\SysWOW64\1u7.exe

MD5 040331d5f726724353d28ef0a3931aa0
SHA1 9f67af147872fbeeb4c6ab595b322298a79f7f4f
SHA256 cb2ab3d195e994a9fbd32a4771ca8e953e7fd2d76e8e4a8e1aec46d1f34a0788
SHA512 ed5beb3deebfa88eb02e74c5bcae45231705eb14fe8d64b0f14c6e6aff47087ed9941a992eea95a76bb68fb133ced8f580ff1f34a3eb6f9ed5e24800f778e1ad

memory/2932-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-11-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-13-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-15-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-18-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-20-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2556-22-0x0000000000400000-0x000000000040E000-memory.dmp