Malware Analysis Report

2025-01-18 16:43

Sample ID 241205-s8xscaxkfk
Target 348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
SHA256 348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7
Tags
isrstealer collection discovery spyware stealer trojan upx
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

348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7

Threat Level: Known bad

The file 348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe was found to be: Known bad.

Malicious Activity Summary

isrstealer collection discovery spyware stealer trojan upx

ISR Stealer payload

ISR Stealer

Isrstealer family

NirSoft MailPassView

Detected Nirsoft tools

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

UPX packed file

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-05 15:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-05 15:48

Reported

2024-12-05 15:50

Platform

win7-20240903-en

Max time kernel

16s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.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

Isrstealer family

isrstealer

Detected Nirsoft tools

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

NirSoft MailPassView

Description Indicator Process Target
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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe 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
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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2400 wrote to memory of 2644 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2984 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe
PID 2644 wrote to memory of 2560 N/A C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

Processes

C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

"C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe"

C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

"C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe"

C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\0zg65HUxxe.ini"

C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

/scomma "C:\Users\Admin\AppData\Local\Temp\kxw4ah6a9t.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 hostlogs.net16.net udp

Files

memory/2644-0-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2400-6-0x0000000000380000-0x00000000003D5000-memory.dmp

memory/2644-9-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2644-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2644-5-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2644-3-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2984-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2984-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2984-15-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2984-14-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2984-19-0x0000000000400000-0x0000000000453000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\0zg65HUxxe.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2644-22-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2560-25-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2560-26-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2560-27-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2560-30-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2644-31-0x0000000000400000-0x0000000000442000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-05 15:48

Reported

2024-12-05 15:50

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe"

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe

"C:\Users\Admin\AppData\Local\Temp\348e41e753d39d03a43ce763b65cab77813c954ad17a7741d729372d2fdb59a7.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3152 -ip 3152

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 476

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 20.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp

Files

N/A