Malware Analysis Report

2025-01-18 21:54

Sample ID 240622-mgakvatflg
Target 01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118
SHA256 4b8bb58350588bf17a6c8bf0b59b4114dae7edb100cbdf0efffa536eae118b04
Tags
adware persistence privilege_escalation stealer
score
8/10

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
8/10

SHA256

4b8bb58350588bf17a6c8bf0b59b4114dae7edb100cbdf0efffa536eae118b04

Threat Level: Likely malicious

The file 01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

adware persistence privilege_escalation stealer

Event Triggered Execution: AppInit DLLs

Loads dropped DLL

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 10:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 10:25

Reported

2024-06-22 10:28

Platform

win7-20231129-en

Max time kernel

118s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2548 wrote to memory of 2852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2852-0-0x0000000010000000-0x000000001003F000-memory.dmp

memory/2852-1-0x0000000010000000-0x000000001003F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 10:25

Reported

2024-06-22 10:28

Platform

win10v2004-20240226-en

Max time kernel

142s

Max time network

158s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

Signatures

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{48f911ec-bddb-4b20-a655-e4103ba8e06b} C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{48f911ec-bddb-4b20-a655-e4103ba8e06b}\ = "{b60e8ab3-014e-556a-02b4-bddbce119f84}" C:\Windows\SysWOW64\rundll32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\uqcgdg.dll C:\Windows\SysWOW64\rundll32.exe N/A
File opened for modification C:\Windows\SysWOW64\uqcgdg.dll C:\Windows\SysWOW64\rundll32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{48f911ec-bddb-4b20-a655-e4103ba8e06b}\InprocServer32 C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{48f911ec-bddb-4b20-a655-e4103ba8e06b}\InprocServer32\ThreadingModel = "free" C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Programmable C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\ProgID C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640} C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\Implemented Categories C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\TypeLib C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Programmable C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Version C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\InprocServer32 C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{48f911ec-bddb-4b20-a655-e4103ba8e06b} C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\VersionIndependentProgID C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\TypeLib C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640} C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}\InprocServer32 C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\VersionIndependentProgID C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\ProgID C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}\Implemented Categories C:\Windows\SysWOW64\rundll32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{48f911ec-bddb-4b20-a655-e4103ba8e06b}\InprocServer32\ = "C:\\Windows\\SysWow64\\uqcgdg.dll" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4836 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 4572 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 4572 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 4572 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\01a396b46a9f2dd4f7543e304c854a36_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe "C:\Windows\system32\uqcgdg.dll",i

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 --mojo-platform-channel-handle=4012 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 57.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.200.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 42.200.250.142.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/4012-0-0x0000000010000000-0x000000001003F000-memory.dmp

memory/4012-1-0x0000000010000000-0x000000001003A000-memory.dmp

C:\Windows\SysWOW64\uqcgdg.dll

MD5 01a396b46a9f2dd4f7543e304c854a36
SHA1 ede26c28ff12c2344a5b4c4daf25a92168759843
SHA256 4b8bb58350588bf17a6c8bf0b59b4114dae7edb100cbdf0efffa536eae118b04
SHA512 03dfbded702a48abe20f44f9d51fa0394502674169716960f566a60e5a12f531f5534456e66859795ea5e174a7b87bc8fff76f08fd7233820a2982a8c6545cb7

memory/4572-5-0x0000000010000000-0x000000001003F000-memory.dmp

memory/4572-6-0x0000000010000000-0x000000001003F000-memory.dmp

memory/4012-7-0x0000000010000000-0x000000001003F000-memory.dmp

memory/4012-8-0x0000000010000000-0x000000001003A000-memory.dmp

memory/4572-9-0x0000000010000000-0x000000001003F000-memory.dmp