Malware Analysis Report

2025-01-03 08:52

Sample ID 240509-zj5vzsgh68
Target 2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia
SHA256 ac41d973e1c874da4938f42214c201d41baad68b322f39292e42a39ef768a569
Tags
gandcrab backdoor persistence 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

ac41d973e1c874da4938f42214c201d41baad68b322f39292e42a39ef768a569

Threat Level: Known bad

The file 2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia was found to be: Known bad.

Malicious Activity Summary

gandcrab backdoor persistence ransomware

GandCrab payload

Gandcrab

Detects Reflective DLL injection artifacts

Detects ransomware indicator

Gandcrab Payload

Adds Run key to start application

Enumerates connected drives

Program crash

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-09 20:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-09 20:45

Reported

2024-05-09 20:48

Platform

win7-20240221-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe"

Signatures

GandCrab payload

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

Gandcrab

ransomware backdoor gandcrab

Detects Reflective DLL injection artifacts

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

Detects ransomware indicator

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

Gandcrab Payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\dtlgnbzpbjb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\hzojow.exe\"" C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 724

Network

Country Destination Domain Proto
US 8.8.8.8:53 ipv4bot.whatismyipaddress.com udp

Files

memory/1900-1-0x0000000000400000-0x000000000055A000-memory.dmp

memory/1900-2-0x0000000000260000-0x0000000000277000-memory.dmp

memory/1900-4-0x0000000000412000-0x0000000000425000-memory.dmp

memory/1900-3-0x00000000009C0000-0x0000000000AC0000-memory.dmp

memory/1900-11-0x0000000000400000-0x000000000055A000-memory.dmp

memory/1900-12-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 20:45

Reported

2024-05-09 20:48

Platform

win10v2004-20240508-en

Max time kernel

92s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe"

Signatures

GandCrab payload

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

Gandcrab

ransomware backdoor gandcrab

Detects Reflective DLL injection artifacts

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

Detects ransomware indicator

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

Gandcrab Payload

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

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-09_610d9e30ab02d83962401be8eb733efd_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3744 -ip 3744

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 452

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
BE 88.221.83.185:443 www.bing.com tcp
US 8.8.8.8:53 185.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 24.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 99.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3744-5-0x0000000000400000-0x0000000000428000-memory.dmp

memory/3744-6-0x0000000000400000-0x000000000055A000-memory.dmp

memory/3744-4-0x0000000000580000-0x0000000000680000-memory.dmp

memory/3744-2-0x0000000000700000-0x0000000000717000-memory.dmp

memory/3744-1-0x0000000000400000-0x000000000055A000-memory.dmp