Malware Analysis Report

2025-04-03 14:29

Sample ID 240928-j6edjswann
Target fbdfc5e3e8b77e82fe7813e6f76f2d26_JaffaCakes118
SHA256 a531f76cd54f5f1d0e1628e1524d92f6888ef7fc5be65646b2dc2ba6ddd22251
Tags
guloader discovery downloader
score
10/10

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
10/10

SHA256

a531f76cd54f5f1d0e1628e1524d92f6888ef7fc5be65646b2dc2ba6ddd22251

Threat Level: Known bad

The file fbdfc5e3e8b77e82fe7813e6f76f2d26_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

guloader discovery downloader

Guloader,Cloudeye

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-28 08:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-28 08:16

Reported

2024-09-28 08:19

Platform

win7-20240903-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1580 set thread context of 2700 N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 castmart.ga udp

Files

memory/1580-2-0x0000000000280000-0x0000000000287000-memory.dmp

memory/1580-4-0x0000000000280000-0x0000000000287000-memory.dmp

memory/1580-5-0x0000000077370000-0x0000000077519000-memory.dmp

memory/1580-3-0x0000000077371000-0x0000000077472000-memory.dmp

memory/2700-7-0x0000000000400000-0x00000000004DF000-memory.dmp

memory/2700-8-0x0000000077370000-0x0000000077519000-memory.dmp

memory/2700-9-0x0000000000400000-0x00000000004DF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-28 08:16

Reported

2024-09-28 08:19

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2124 set thread context of 4708 N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe

"C:\Users\Admin\AppData\Local\Temp\FedEx - pdf.exe"

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 --field-trial-handle=4380,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga 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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp
US 8.8.8.8:53 castmart.ga udp

Files

memory/2124-2-0x0000000002230000-0x0000000002237000-memory.dmp

memory/2124-3-0x0000000077DD1000-0x0000000077EF1000-memory.dmp

memory/4708-4-0x0000000000400000-0x00000000004E7000-memory.dmp

memory/2124-5-0x0000000002230000-0x0000000002237000-memory.dmp

memory/4708-7-0x00000000004F0000-0x00000000005F0000-memory.dmp