Malware Analysis Report

2025-01-18 16:48

Sample ID 220919-b3ek5sfaaj
Target 45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193
SHA256 45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193
Tags
isrstealer spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193

Threat Level: Known bad

The file 45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer trojan

ISR Stealer payload

ISR Stealer

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Modifies system certificate store

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-09-19 01:39

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-09-19 01:39

Reported

2022-09-19 02:31

Platform

win7-20220901-en

Max time kernel

43s

Max time network

108s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer 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
N/A N/A N/A N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe N/A
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 1744 wrote to memory of 840 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

Processes

C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

"C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe"

C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 f1tfull.site11.com udp
US 153.92.0.100:80 f1tfull.site11.com tcp
US 8.8.8.8:53 www.000webhost.com udp
US 104.19.184.120:443 www.000webhost.com tcp

Files

memory/840-56-0x0000000000400000-0x0000000000414000-memory.dmp

memory/840-57-0x0000000000400000-0x0000000000414000-memory.dmp

memory/840-59-0x0000000000400000-0x0000000000414000-memory.dmp

memory/840-60-0x0000000000400000-0x0000000000414000-memory.dmp

memory/840-61-0x00000000004011F0-mapping.dmp

memory/840-65-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

memory/840-66-0x0000000000400000-0x0000000000414000-memory.dmp

memory/840-67-0x0000000000400000-0x0000000000414000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-09-19 01:39

Reported

2022-09-19 02:31

Platform

win10v2004-20220812-en

Max time kernel

86s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer 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
N/A N/A N/A N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

Modifies system certificate store

evasion spyware trojan
Description Indicator Process Target
Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe
PID 2472 wrote to memory of 4540 N/A C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

Processes

C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

"C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe"

C:\Users\Admin\AppData\Local\Temp\45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 f1tfull.site11.com udp
US 153.92.0.100:80 f1tfull.site11.com tcp
US 8.8.8.8:53 www.000webhost.com udp
US 104.19.185.120:443 www.000webhost.com tcp
US 8.8.8.8:53 crl.comodoca.com udp
US 172.64.155.188:80 crl.comodoca.com tcp
US 8.8.8.8:53 crl.usertrust.com udp
US 104.18.32.68:80 crl.usertrust.com tcp
US 104.19.185.120:443 www.000webhost.com tcp
US 20.189.173.13:443 tcp
NL 104.80.225.205:443 tcp
US 104.19.184.120:443 www.000webhost.com tcp
NL 95.101.78.82:80 tcp
NL 95.101.78.82:80 tcp
US 104.19.185.120:443 www.000webhost.com tcp

Files

memory/4540-134-0x0000000000000000-mapping.dmp

memory/4540-135-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4540-139-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4540-140-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4540-141-0x0000000000400000-0x0000000000414000-memory.dmp