Malware Analysis Report

2024-08-06 12:45

Sample ID 240623-ndwvcayfnc
Target build.exe
SHA256 83af61927a5d04c9827052d62448a85c9d73c109a35fb629da3b8ebc073ebb4e
Tags
stealerium collection persistence privilege_escalation spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

83af61927a5d04c9827052d62448a85c9d73c109a35fb629da3b8ebc073ebb4e

Threat Level: Known bad

The file build.exe was found to be: Known bad.

Malicious Activity Summary

stealerium collection persistence privilege_escalation spyware stealer

Stealerium family

Stealerium

Reads user/profile data of web browsers

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Accesses Microsoft Outlook profiles

Unsigned PE

Program crash

Event Triggered Execution: Netsh Helper DLL

outlook_win_path

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_office_path

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Event Triggered Execution
T1546
Netsh Helper DLL
T1546.007
Privilege Escalation
TA0004
Event Triggered Execution
T1546
Netsh Helper DLL
T1546.007
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Email Collection
T1114
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-23 11:17

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-23 11:17

Reported

2024-06-23 11:20

Platform

win10v2004-20240611-en

Max time kernel

140s

Max time network

150s

Command Line

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

Signatures

Stealerium

stealer stealerium

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A icanhazip.com N/A N/A

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\build.exe

Checks processor information in registry

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\system32\msiexec.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1928 wrote to memory of 3200 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 3200 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 3200 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3200 wrote to memory of 3816 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3200 wrote to memory of 3816 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3200 wrote to memory of 3816 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3200 wrote to memory of 1892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3200 wrote to memory of 1892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3200 wrote to memory of 1892 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3200 wrote to memory of 3920 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 3200 wrote to memory of 3920 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 3200 wrote to memory of 3920 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 1928 wrote to memory of 3428 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 3428 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1928 wrote to memory of 3428 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3428 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3428 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3428 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3428 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3428 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3428 wrote to memory of 2904 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A

Processes

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

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

C:\Windows\SysWOW64\cmd.exe

"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\netsh.exe

netsh wlan show profile

C:\Windows\SysWOW64\findstr.exe

findstr All

C:\Windows\system32\msiexec.exe

C:\Windows\system32\msiexec.exe /V

C:\Windows\SysWOW64\cmd.exe

"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\netsh.exe

netsh wlan show networks mode=bssid

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1928 -ip 1928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 2148

C:\Windows\SysWOW64\mshta.exe

"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\ConvertFromClose.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}

C:\Windows\SysWOW64\werfault.exe

werfault.exe /h /shared Global\4dff92c4566148d6b2cbc9c3cabc144e /t 2976 /p 3484

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 232.137.159.162.in-addr.arpa udp
US 8.8.8.8:53 icanhazip.com udp
US 104.16.184.241:80 icanhazip.com tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 241.184.16.104.in-addr.arpa udp
US 8.8.8.8:53 evcs-ocsp.ws.symantec.com udp
US 152.199.19.74:80 evcs-ocsp.ws.symantec.com tcp
US 8.8.8.8:53 74.19.199.152.in-addr.arpa udp
US 104.16.184.241:80 icanhazip.com tcp
US 8.8.8.8:53 api.gofile.io udp
FR 51.178.66.33:443 api.gofile.io tcp
US 8.8.8.8:53 33.66.178.51.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/1928-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

memory/1928-1-0x00000000006C0000-0x0000000000852000-memory.dmp

memory/1928-2-0x0000000005230000-0x0000000005296000-memory.dmp

memory/1928-3-0x0000000074E50000-0x0000000075600000-memory.dmp

memory/1928-7-0x0000000005770000-0x0000000005802000-memory.dmp

memory/1928-8-0x0000000005800000-0x0000000005826000-memory.dmp

memory/1928-9-0x0000000005830000-0x0000000005838000-memory.dmp

memory/1928-10-0x0000000006750000-0x000000000675A000-memory.dmp

memory/1928-11-0x0000000006760000-0x0000000006768000-memory.dmp

memory/1928-12-0x0000000006780000-0x000000000679E000-memory.dmp

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\Browsers\Firefox\Bookmarks.txt

MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

memory/1928-69-0x0000000006BE0000-0x0000000006C72000-memory.dmp

memory/1928-72-0x00000000077B0000-0x0000000007D54000-memory.dmp

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\System\Process.txt

MD5 dbe8bf458b8d76ec7f81f1842d8ee7ac
SHA1 f47a16a1ed312a6cd9ff0db4d71d3333f6f79de9
SHA256 c5111b9cd1943c1e76fe626cab4cd1a03f351d9217fcfec51e2a04f180e826d2
SHA512 9e9211b805764762a5d0cfa9f3bb05c17d4dd373ef5b2c26fe9c59f63e9be85386f9fa1d4dead6c9dfe6289dbdc7b470e865926851847701927ad89f5e185f7e

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\System\Apps.txt

MD5 87af131ef95a551bf25f16e49c186c12
SHA1 183151d6eee339ca25a21c494dfafe4cb6488ebf
SHA256 6c12806cb1b0096dd392ecf81a8bc8700280cf600e79dd2a595d1bb53643e06a
SHA512 3bc23951d65af6f7e31e524e5fc45b7444d9441e31c23f11c4043af1e91470c03f62010d5dc8cdd3fbfaa12a771de48425335bbf4a90e62058f294d83bb75a3d

memory/1928-206-0x0000000006920000-0x000000000699A000-memory.dmp

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\System\Debug.txt

MD5 6816276ac944a060e0a9772645bceaa5
SHA1 3aeedd53e08ba5e1f119a44ca9180503748f00d1
SHA256 460b8223ce01cb1d950c9ea70d92a1e3e97cdca8a12458be05a764f83a3117b7
SHA512 80c275c937b68c12221332b7a49a840b3a7835e5606d49ea99a28fb29f1af4f954af0419ca35565a5a256db2af93af7afacfc946629cc3eb3d0a46f28b91f040

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\System\ProductKey.txt

MD5 71eb5479298c7afc6d126fa04d2a9bde
SHA1 a9b3d5505cf9f84bb6c2be2acece53cb40075113
SHA256 f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3
SHA512 7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\Directories\Videos.txt

MD5 1fddbf1169b6c75898b86e7e24bc7c1f
SHA1 d2091060cb5191ff70eb99c0088c182e80c20f8c
SHA256 a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
SHA512 20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

memory/1928-279-0x0000000006E00000-0x0000000006EB2000-memory.dmp

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\Directories\Startup.txt

MD5 68c93da4981d591704cea7b71cebfb97
SHA1 fd0f8d97463cd33892cc828b4ad04e03fc014fa6
SHA256 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
SHA512 63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

C:\Users\Admin\AppData\Local\5a9e1ae8fc2faadf0165d324cda13818\Admin@PKVHMXKI_en-US\Directories\OneDrive.txt

MD5 966247eb3ee749e21597d73c4176bd52
SHA1 1e9e63c2872cef8f015d4b888eb9f81b00a35c79
SHA256 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
SHA512 bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa

memory/1928-281-0x00000000068D0000-0x00000000068F2000-memory.dmp

memory/1928-282-0x0000000008060000-0x00000000083B4000-memory.dmp

memory/1928-283-0x0000000074E50000-0x0000000075600000-memory.dmp