Malware Analysis Report

2025-01-18 21:48

Sample ID 240414-19am7saa5t
Target efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118
SHA256 45fa77349f57813db84091ac18ccf647134cd12ea41a6d2549e2764e23ec1fdd
Tags
upx adware stealer
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

45fa77349f57813db84091ac18ccf647134cd12ea41a6d2549e2764e23ec1fdd

Threat Level: Shows suspicious behavior

The file efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx adware stealer

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 22:20

Signatures

ACProtect 1.3x - 1.4x DLL software

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

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 22:20

Reported

2024-04-14 22:23

Platform

win7-20240221-en

Max time kernel

120s

Max time network

129s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

Signatures

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2A12DAB2-A8AE-4E23-9CE3-30ABA18E2BFF} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2A12DAB2-A8AE-4E23-9CE3-30ABA18E2BFF} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2A12DAB2-A8AE-4E23-9CE3-30ABA18E2BFF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2A12DAB2-A8AE-4E23-9CE3-30ABA18E2BFF}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2A12DAB2-A8AE-4E23-9CE3-30ABA18E2BFF}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2548 wrote to memory of 2476 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\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

Network

N/A

Files

memory/2476-0-0x00000000001A0000-0x00000000001DC000-memory.dmp

memory/2476-1-0x00000000001A0000-0x00000000001DC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-14 22:20

Reported

2024-04-14 22:23

Platform

win10v2004-20240412-en

Max time kernel

123s

Max time network

176s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

Signatures

UPX packed file

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

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E185BB37-29A1-4DD5-B75C-B2346BBC5C2D} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E185BB37-29A1-4DD5-B75C-B2346BBC5C2D}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E185BB37-29A1-4DD5-B75C-B2346BBC5C2D}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E185BB37-29A1-4DD5-B75C-B2346BBC5C2D} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E185BB37-29A1-4DD5-B75C-B2346BBC5C2D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4452 wrote to memory of 2816 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4452 wrote to memory of 2816 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4452 wrote to memory of 2816 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\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efa4123fd1113a311bc2b47cf4365bc0_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 23.53.113.159:80 tcp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 215.143.182.52.in-addr.arpa udp

Files

memory/2816-0-0x0000000000400000-0x000000000043C000-memory.dmp