Malware Analysis Report

2025-01-03 09:02

Sample ID 240928-xjyqkaterh
Target fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118
SHA256 3ba28adb963190e3e41669aa746c480f3de2ae714a88977ecb02a19abb70183c
Tags
gandcrab backdoor discovery ransomware
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

3ba28adb963190e3e41669aa746c480f3de2ae714a88977ecb02a19abb70183c

Threat Level: Known bad

The file fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

gandcrab backdoor discovery ransomware

Gandcrab

GandCrab payload

Gandcrab family

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-28 18:53

Signatures

GandCrab payload

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

Gandcrab family

gandcrab

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-28 18:53

Reported

2024-09-28 18:56

Platform

win7-20240708-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe"

Signatures

GandCrab payload

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

Gandcrab

ransomware backdoor gandcrab

Program crash

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

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\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2360 -s 124

Network

N/A

Files

memory/2360-0-0x000000000F3D0000-0x000000000F3E6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-28 18:53

Reported

2024-09-28 18:56

Platform

win10v2004-20240802-en

Max time kernel

132s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe"

Signatures

GandCrab payload

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

Gandcrab

ransomware backdoor gandcrab

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\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fcef65e3669ef17ae1d4744b42d239a8_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2232 -ip 2232

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 344

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=4336,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=3776 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.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 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/2232-0-0x000000000FD10000-0x000000000FD26000-memory.dmp