Malware Analysis Report

2025-08-05 19:42

Sample ID 240507-x1jmzabd7y
Target 427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8
SHA256 427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8
Tags
stealc discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8

Threat Level: Known bad

The file 427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8 was found to be: Known bad.

Malicious Activity Summary

stealc discovery spyware stealer

Stealc

Downloads MZ/PE file

Loads dropped DLL

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Enumerates physical storage devices

Program crash

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-07 19:19

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-07 19:19

Reported

2024-05-07 19:21

Platform

win11-20240419-en

Max time kernel

90s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe

"C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3460 -ip 3460

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3460 -s 2448

Network

Country Destination Domain Proto
DE 185.172.128.151:80 185.172.128.151 tcp
US 8.8.8.8:53 151.128.172.185.in-addr.arpa udp

Files

memory/3460-1-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

memory/3460-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/3460-2-0x0000000004830000-0x0000000004857000-memory.dmp

memory/3460-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/3460-52-0x0000000000400000-0x0000000002B00000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/3460-86-0x0000000000400000-0x000000000063B000-memory.dmp

memory/3460-85-0x0000000000400000-0x0000000002B00000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-07 19:19

Reported

2024-05-07 19:21

Platform

win10v2004-20240419-en

Max time kernel

133s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe

"C:\Users\Admin\AppData\Local\Temp\427c7f75341db2d3d41c27ad13771827c825353ef24180c1f900c5dc1683ced8.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4000 -ip 4000

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4000 -s 2368

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 20.231.121.79:80 tcp
DE 185.172.128.151:80 185.172.128.151 tcp
US 8.8.8.8:53 151.128.172.185.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 26.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/4000-3-0x0000000000400000-0x000000000063B000-memory.dmp

memory/4000-2-0x0000000002E90000-0x0000000002EB7000-memory.dmp

memory/4000-1-0x0000000002C90000-0x0000000002D90000-memory.dmp

memory/4000-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/4000-46-0x0000000000400000-0x0000000002B00000-memory.dmp

C:\ProgramData\nss3.dll

MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

C:\ProgramData\mozglue.dll

MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

C:\ProgramData\Are.docx

MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

memory/4000-94-0x0000000000400000-0x000000000063B000-memory.dmp

memory/4000-93-0x0000000000400000-0x0000000002B00000-memory.dmp