Malware Analysis Report

2025-01-18 21:37

Sample ID 240415-wwsveach99
Target f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118
SHA256 1b419d7874e37ba8fa505980d0463dffcc97a068da11d70cfac9366ec69f9784
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

1b419d7874e37ba8fa505980d0463dffcc97a068da11d70cfac9366ec69f9784

Threat Level: Shows suspicious behavior

The file f1ae78d29a2bbaf0b72f8b10c071657a_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

2024-04-15 18:16

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

2024-04-15 18:16

Reported

2024-04-15 18:19

Platform

win7-20240221-en

Max time kernel

120s

Max time network

123s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1ae78d29a2bbaf0b72f8b10c071657a_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\{9E0B205E-E3E3-4176-8D64-E1718538AB8D} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9E0B205E-E3E3-4176-8D64-E1718538AB8D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9E0B205E-E3E3-4176-8D64-E1718538AB8D}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9E0B205E-E3E3-4176-8D64-E1718538AB8D}\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\{9E0B205E-E3E3-4176-8D64-E1718538AB8D} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2060 wrote to memory of 2512 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\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll

Network

N/A

Files

memory/2512-0-0x00000000001F0000-0x000000000022C000-memory.dmp

memory/2512-1-0x00000000001F0000-0x000000000022C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 18:16

Reported

2024-04-15 18:19

Platform

win10v2004-20240412-en

Max time kernel

148s

Max time network

153s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1ae78d29a2bbaf0b72f8b10c071657a_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\{E08AF6D3-634D-4E7C-AADD-04E2A11D6058} 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\{E08AF6D3-634D-4E7C-AADD-04E2A11D6058} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E08AF6D3-634D-4E7C-AADD-04E2A11D6058}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E08AF6D3-634D-4E7C-AADD-04E2A11D6058}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E08AF6D3-634D-4E7C-AADD-04E2A11D6058}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2760 wrote to memory of 2932 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2760 wrote to memory of 2932 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2760 wrote to memory of 2932 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\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f1ae78d29a2bbaf0b72f8b10c071657a_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 18.129.101.95.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 122.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

memory/2932-0-0x00000000020B0000-0x00000000020EC000-memory.dmp