Malware Analysis Report

2025-01-18 12:41

Sample ID 240403-ybyk9saf4s
Target a4cef4466323bbc3f0e665f339629db5_JaffaCakes118
SHA256 76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4
Tags
formbook snr6 rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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
10/10

SHA256

76ce63841f53dd035159b8feed432cf72e114ffd57344d8fae525f0a350856f4

Threat Level: Known bad

The file a4cef4466323bbc3f0e665f339629db5_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook snr6 rat spyware stealer trojan

Formbook

Formbook payload

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-03 19:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 19:37

Reported

2024-04-03 19:39

Platform

win7-20240221-en

Max time kernel

118s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1288 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 1288 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe
PID 2524 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2524 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2524 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe
PID 2524 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 36

Network

N/A

Files

memory/1288-0-0x00000000001D0000-0x0000000000294000-memory.dmp

memory/1288-1-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/1288-2-0x0000000005000000-0x0000000005040000-memory.dmp

memory/1288-3-0x0000000000420000-0x0000000000434000-memory.dmp

memory/1288-4-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/1288-5-0x0000000005000000-0x0000000005040000-memory.dmp

memory/1288-6-0x0000000005D10000-0x0000000005D98000-memory.dmp

memory/1288-7-0x00000000005C0000-0x00000000005F4000-memory.dmp

memory/2524-8-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2524-10-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2524-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2524-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1288-14-0x0000000073DE0000-0x00000000744CE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 19:37

Reported

2024-04-03 19:39

Platform

win10v2004-20240319-en

Max time kernel

146s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Processes

C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\a4cef4466323bbc3f0e665f339629db5_JaffaCakes118.exe

"{path}"

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=3776 --field-trial-handle=2232,i,9772508353233483703,11473701862007458502,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 226.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 162.85.19.2.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 5.11.19.2.in-addr.arpa udp
GB 13.105.221.16:443 tcp
GB 13.105.221.16:443 tcp
US 8.8.8.8:53 78.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.178.89.13.in-addr.arpa udp

Files

memory/2340-0-0x00000000746C0000-0x0000000074E70000-memory.dmp

memory/2340-1-0x0000000000E30000-0x0000000000EF4000-memory.dmp

memory/2340-2-0x0000000005790000-0x000000000582C000-memory.dmp

memory/2340-3-0x0000000005E50000-0x00000000063F4000-memory.dmp

memory/2340-4-0x00000000058A0000-0x0000000005932000-memory.dmp

memory/2340-5-0x0000000005A60000-0x0000000005A70000-memory.dmp

memory/2340-6-0x0000000005760000-0x000000000576A000-memory.dmp

memory/2340-7-0x0000000005940000-0x0000000005996000-memory.dmp

memory/2340-8-0x0000000005A30000-0x0000000005A44000-memory.dmp

memory/2340-9-0x00000000746C0000-0x0000000074E70000-memory.dmp

memory/2340-10-0x0000000005A60000-0x0000000005A70000-memory.dmp

memory/2340-11-0x0000000006CA0000-0x0000000006D28000-memory.dmp

memory/2340-12-0x000000000A990000-0x000000000A9C4000-memory.dmp

memory/4520-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2340-15-0x00000000746C0000-0x0000000074E70000-memory.dmp

memory/4520-16-0x0000000001800000-0x0000000001B4A000-memory.dmp