Malware Analysis Report

2025-01-18 16:47

Sample ID 220616-hwbz1aage9
Target 26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6
SHA256 26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6
Tags
isrstealer persistence spyware stealer trojan upx suricata
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

26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6

Threat Level: Known bad

The file 26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6 was found to be: Known bad.

Malicious Activity Summary

isrstealer persistence spyware stealer trojan upx suricata

ISR Stealer Payload

suricata: ET MALWARE ISRStealer Checkin

ISR Stealer

UPX packed file

Reads user/profile data of web browsers

Adds Run key to start application

Suspicious use of SetThreadContext

AutoIT Executable

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-06-16 07:04

Signatures

AutoIT Executable

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

Analysis: behavioral1

Detonation Overview

Submitted

2022-06-16 07:04

Reported

2022-06-16 08:31

Platform

win7-20220414-en

Max time kernel

26s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.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

UPX packed file

upx
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 user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe" C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 1736 wrote to memory of 892 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 892 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

Processes

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe"

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe"

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\oKKChhMrdO.ini"

Network

N/A

Files

memory/1736-54-0x00000000769D1000-0x00000000769D3000-memory.dmp

memory/892-55-0x0000000000400000-0x0000000000435000-memory.dmp

memory/892-56-0x0000000000400000-0x0000000000435000-memory.dmp

memory/892-58-0x0000000000400000-0x0000000000435000-memory.dmp

memory/892-60-0x0000000000400000-0x0000000000435000-memory.dmp

memory/892-61-0x0000000000401180-mapping.dmp

memory/1668-65-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1668-66-0x00000000004512E0-mapping.dmp

memory/1668-69-0x0000000000400000-0x0000000000453000-memory.dmp

memory/1668-70-0x0000000000400000-0x0000000000453000-memory.dmp

memory/892-71-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1668-72-0x0000000000400000-0x0000000000453000-memory.dmp

memory/892-73-0x0000000000400000-0x0000000000435000-memory.dmp

memory/1668-74-0x0000000000400000-0x0000000000453000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-06-16 07:04

Reported

2022-06-16 08:31

Platform

win10v2004-20220414-en

Max time kernel

90s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.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

suricata: ET MALWARE ISRStealer Checkin

suricata

UPX packed file

upx
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 user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe" C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4428 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe
PID 4200 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

Processes

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe"

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

"C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe"

C:\Users\Admin\AppData\Local\Temp\26dacc4039fe46089565614caf19300700e2eae430ac8d7f0f71c3ba652396f6.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\nazre3kPxa.ini"

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 209.197.3.8:80 tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 zeus-bot.cba.pl udp
NL 95.211.144.68:80 zeus-bot.cba.pl tcp
US 20.44.10.122:443 tcp
NL 8.248.7.254:80 tcp
NL 8.248.7.254:80 tcp

Files

memory/4200-131-0x0000000000400000-0x0000000000435000-memory.dmp

memory/4200-130-0x0000000000000000-mapping.dmp

memory/208-136-0x0000000000400000-0x0000000000453000-memory.dmp

memory/208-135-0x0000000000000000-mapping.dmp

memory/208-138-0x0000000000400000-0x0000000000453000-memory.dmp

memory/208-139-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4200-140-0x0000000000400000-0x0000000000435000-memory.dmp

memory/208-141-0x0000000000400000-0x0000000000453000-memory.dmp

memory/208-142-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\nazre3kPxa.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/4200-144-0x0000000000400000-0x0000000000435000-memory.dmp