Malware Analysis Report

2025-01-03 08:40

Sample ID 240508-e5cfcaag71
Target 2334afaf0f1839f3819be07931f72444_JaffaCakes118
SHA256 a36a25369fc75e4987e1cf6a6450ced36af89038d382cc465d22995b5ff0cdf7
Tags
gandcrab
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a36a25369fc75e4987e1cf6a6450ced36af89038d382cc465d22995b5ff0cdf7

Threat Level: Known bad

The file 2334afaf0f1839f3819be07931f72444_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

gandcrab

GandCrab payload

Gandcrab family

Enumerates connected drives

Unsigned PE

Program crash

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-08 04:31

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: behavioral2

Detonation Overview

Submitted

2024-05-08 04:31

Reported

2024-05-08 04:33

Platform

win10v2004-20240226-en

Max time kernel

137s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

Signatures

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\R: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\V: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\B: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\E: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\I: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\J: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\S: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\T: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\W: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Y: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\A: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\H: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\K: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\N: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\P: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Q: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\Z: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\G: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\L: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\M: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\O: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\U: C:\Windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\X: C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

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

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4028 wrote to memory of 4860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4028 wrote to memory of 4860 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4028 wrote to memory of 4860 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\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4860 -ip 4860

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 664

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=3644 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 142.53.16.96.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 10.73.50.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 04:31

Reported

2024-05-08 04:33

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\2334afaf0f1839f3819be07931f72444_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 228

Network

N/A

Files

N/A