Malware Analysis Report

2024-11-16 13:51

Sample ID 240626-2jkwxs1bkp
Target bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361
SHA256 bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361
Tags
stealc jopa spyware stealer
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

bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361

Threat Level: Known bad

The file bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361 was found to be: Known bad.

Malicious Activity Summary

stealc jopa spyware stealer

Stealc

Downloads MZ/PE file

Loads dropped DLL

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Checks processor information in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 22:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 22:36

Reported

2024-06-26 22:39

Platform

win10v2004-20240611-en

Max time kernel

133s

Max time network

112s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 3520 wrote to memory of 3144 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe

"C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"

Network

Country Destination Domain Proto
DE 65.21.175.0:80 65.21.175.0 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 0.175.21.65.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/3520-0-0x0000000074E3E000-0x0000000074E3F000-memory.dmp

memory/3520-1-0x0000000000CD0000-0x0000000000E02000-memory.dmp

C:\Users\Admin\AppData\Roaming\d3d9.dll

MD5 8fa26f1e37d3ff7f736fc93d520bc8ab
SHA1 ad532e1cb4a1b3cd82c7a85647f8f6dd99833bb1
SHA256 6c47da8fbd12f22d7272fbf223e054bf5093c0922d0e8fb7d6289a5913c2e45d
SHA512 8a0b53cbc3a20e2f0fd41c486b1af1fbbcf7f2fed9f7368b672a07f25faaa2568bbdbcf0841233ac8c473a4d1dee099e90bf6098a6fa15e44b8526efdafc1287

memory/3144-8-0x0000000000400000-0x000000000063C000-memory.dmp

memory/3144-13-0x0000000000400000-0x000000000063C000-memory.dmp

memory/3520-12-0x0000000074E30000-0x00000000755E0000-memory.dmp

memory/3144-11-0x0000000000400000-0x000000000063C000-memory.dmp

memory/3144-14-0x0000000061E00000-0x0000000061EF3000-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

memory/3144-84-0x0000000000400000-0x000000000063C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 22:36

Reported

2024-06-26 22:39

Platform

win11-20240419-en

Max time kernel

90s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe"

Signatures

Stealc

stealer stealc

Downloads MZ/PE file

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
PID 4048 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe

"C:\Users\Admin\AppData\Local\Temp\bac402b5749b2da2211db6d2404c1c621ccd0c2e5d492eb6f973b3e2d38dd361.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"

Network

Country Destination Domain Proto
DE 65.21.175.0:80 65.21.175.0 tcp
US 8.8.8.8:53 0.175.21.65.in-addr.arpa udp

Files

memory/4048-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

memory/4048-1-0x00000000001F0000-0x0000000000322000-memory.dmp

C:\Users\Admin\AppData\Roaming\d3d9.dll

MD5 8fa26f1e37d3ff7f736fc93d520bc8ab
SHA1 ad532e1cb4a1b3cd82c7a85647f8f6dd99833bb1
SHA256 6c47da8fbd12f22d7272fbf223e054bf5093c0922d0e8fb7d6289a5913c2e45d
SHA512 8a0b53cbc3a20e2f0fd41c486b1af1fbbcf7f2fed9f7368b672a07f25faaa2568bbdbcf0841233ac8c473a4d1dee099e90bf6098a6fa15e44b8526efdafc1287

memory/4472-8-0x0000000000400000-0x000000000063C000-memory.dmp

memory/4472-10-0x0000000000400000-0x000000000063C000-memory.dmp

memory/4048-12-0x00000000745D0000-0x0000000074D81000-memory.dmp

memory/4472-13-0x0000000000400000-0x000000000063C000-memory.dmp

memory/4472-14-0x0000000061E00000-0x0000000061EF3000-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

memory/4472-84-0x0000000000400000-0x000000000063C000-memory.dmp