Malware Analysis Report

2025-08-05 12:49

Sample ID 240324-gbq3racg6w
Target 2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia
SHA256 f9d3d7e5f436dabd31cb9401016cc61d318c45a2a6632df72c246c49783d3549
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

f9d3d7e5f436dabd31cb9401016cc61d318c45a2a6632df72c246c49783d3549

Threat Level: Known bad

The file 2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia was found to be: Known bad.

Malicious Activity Summary

gandcrab backdoor persistence ransomware

GandCrab payload

Gandcrab

Detects ransomware indicator

Detects Reflective DLL injection artifacts

Gandcrab Payload

Enumerates connected drives

Adds Run key to start application

Program crash

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-24 05:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-24 05:38

Reported

2024-03-24 05:40

Platform

win7-20240221-en

Max time kernel

140s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\nuctyacskww = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\yuqrfk.exe\"" C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_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\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 724

Network

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

Files

memory/2880-2-0x0000000000640000-0x0000000000740000-memory.dmp

memory/2880-1-0x0000000000400000-0x000000000055A000-memory.dmp

memory/2880-3-0x0000000000240000-0x0000000000257000-memory.dmp

memory/2880-10-0x0000000000400000-0x000000000055A000-memory.dmp

memory/2880-11-0x0000000000640000-0x0000000000740000-memory.dmp

memory/2880-13-0x0000000000240000-0x0000000000257000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-24 05:38

Reported

2024-03-24 05:40

Platform

win10v2004-20240226-en

Max time kernel

133s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_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

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

Processes

C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-03-24_4bcdf70fac51707bcb221d2b62277f5c_karagany_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3444 -ip 3444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3444 -s 368

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/3444-2-0x0000000000580000-0x0000000000680000-memory.dmp

memory/3444-1-0x0000000000400000-0x000000000055A000-memory.dmp

memory/3444-3-0x00000000022B0000-0x00000000022C7000-memory.dmp

memory/3444-6-0x0000000000400000-0x000000000055A000-memory.dmp