Malware Analysis Report

2025-01-18 21:32

Sample ID 240415-a7926scg8z
Target efeab46466340524cfa0c78d0cdc3918_JaffaCakes118
SHA256 9eabc366e65559aa716be247bc4de5b9c6886764f423fad18ee9872345751144
Tags
adware stealer
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

9eabc366e65559aa716be247bc4de5b9c6886764f423fad18ee9872345751144

Threat Level: Shows suspicious behavior

The file efeab46466340524cfa0c78d0cdc3918_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

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 00:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 00:52

Reported

2024-04-15 00:55

Platform

win7-20240319-en

Max time kernel

118s

Max time network

122s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efeab46466340524cfa0c78d0cdc3918_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\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\ = "xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ProgID\ = "efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ = "xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\Clsid\ = "{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3036 wrote to memory of 3044 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\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll

Network

N/A

Files

memory/3044-0-0x0000000000300000-0x0000000000392000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 00:52

Reported

2024-04-15 00:55

Platform

win10v2004-20240412-en

Max time kernel

125s

Max time network

130s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efeab46466340524cfa0c78d0cdc3918_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\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\Clsid\ = "{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ = "xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\ = "xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\ProgID\ = "efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-71E3-8687-8DDA-D5C291DCC1C6}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.xx\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3308 wrote to memory of 3944 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3308 wrote to memory of 3944 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3308 wrote to memory of 3944 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\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efeab46466340524cfa0c78d0cdc3918_JaffaCakes118.dll

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4420,i,5838972776061051553,16186488414347324308,262144 --variations-seed-version --mojo-platform-channel-handle=1052 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 80.192.122.92.in-addr.arpa udp
US 8.8.8.8:53 25.173.189.20.in-addr.arpa udp

Files

N/A