Malware Analysis Report

2024-09-23 05:12

Sample ID 240608-d7atvshd54
Target 2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia
SHA256 50f16266415aed475dfbe42bfcfacac449bfee5ed5c2e318b3c8cdc0dfc04fe8
Tags
gandcrab backdoor persistence ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

50f16266415aed475dfbe42bfcfacac449bfee5ed5c2e318b3c8cdc0dfc04fe8

Threat Level: Known bad

The file 2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia was found to be: Known bad.

Malicious Activity Summary

gandcrab backdoor persistence ransomware

Gandcrab

GandCrab payload

Detects Reflective DLL injection artifacts

Gandcrab Payload

Detects ransomware indicator

Enumerates connected drives

Adds Run key to start application

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-08 03:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 03:38

Reported

2024-06-08 03:41

Platform

win7-20240419-en

Max time kernel

140s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\thndvlenvwj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\ydmpgq.exe\"" C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_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\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2052 -s 724

Network

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

Files

memory/2052-1-0x0000000000400000-0x000000000055A000-memory.dmp

memory/2052-2-0x0000000000240000-0x0000000000257000-memory.dmp

memory/2052-5-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2052-6-0x0000000000400000-0x000000000055A000-memory.dmp

memory/2052-4-0x0000000000670000-0x0000000000770000-memory.dmp

memory/2052-14-0x0000000000670000-0x0000000000770000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 03:38

Reported

2024-06-08 03:41

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_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

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\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-08_5d6b2c46c806c133b975749e7d316301_karagany_mafia.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4796 -ip 4796

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 448

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4796-4-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/4796-5-0x0000000000412000-0x0000000000425000-memory.dmp

memory/4796-2-0x0000000002180000-0x0000000002197000-memory.dmp

memory/4796-1-0x0000000000400000-0x000000000055A000-memory.dmp

memory/4796-6-0x0000000000400000-0x000000000055A000-memory.dmp