Malware Analysis Report

2025-01-03 08:55

Sample ID 240927-ktygbsvann
Target fa195be5a610bb5476583053a21a90ed_JaffaCakes118
SHA256 91815696063636f7bb086f4aaf0950a5bd5ad5148f886c430c895630fd5ffc96
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

91815696063636f7bb086f4aaf0950a5bd5ad5148f886c430c895630fd5ffc96

Threat Level: Known bad

The file fa195be5a610bb5476583053a21a90ed_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

gandcrab backdoor discovery ransomware

GandCrab payload

Gandcrab

Gandcrab family

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-27 08:54

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

2024-09-27 08:54

Reported

2024-09-27 08:56

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_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\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2376 -s 124

Network

N/A

Files

memory/2376-0-0x000000000FBB0000-0x000000000FBC6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-27 08:54

Reported

2024-09-27 08:56

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_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\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fa195be5a610bb5476583053a21a90ed_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2596 -ip 2596

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2596 -s 344

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2596-0-0x000000000F500000-0x000000000F516000-memory.dmp