Malware Analysis Report

2025-03-14 22:36

Sample ID 240406-sewyysch2v
Target e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118
SHA256 0272d47b7fac0190aeb3cdbf46af3fff76cab1b6c63936ad0140128e180caa0e
Tags
persistence
score
6/10

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
6/10

SHA256

0272d47b7fac0190aeb3cdbf46af3fff76cab1b6c63936ad0140128e180caa0e

Threat Level: Shows suspicious behavior

The file e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Adds Run key to start application

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 15:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 15:02

Reported

2024-04-06 15:05

Platform

win7-20240221-en

Max time kernel

140s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\winsys = "C:\\windows\\system32\\winsys.exe" C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\windows\SysWOW64\winsys.exe C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A
File opened for modification C:\windows\SysWOW64\winsys.exe C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\windows\logi.txt C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe"

Network

N/A

Files

memory/328-0-0x0000000000320000-0x0000000000321000-memory.dmp

memory/328-2-0x0000000000400000-0x0000000000489000-memory.dmp

memory/328-4-0x0000000000320000-0x0000000000321000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 15:02

Reported

2024-04-06 15:05

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winsys = "C:\\windows\\system32\\winsys.exe" C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\windows\SysWOW64\winsys.exe C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A
File opened for modification C:\windows\SysWOW64\winsys.exe C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\windows\logi.txt C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2cd40cd34a1e037aacfe28386654a9c_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 131.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2760-0-0x00000000021F0000-0x00000000021F1000-memory.dmp

memory/2760-2-0x0000000000400000-0x0000000000489000-memory.dmp

memory/2760-4-0x00000000021F0000-0x00000000021F1000-memory.dmp