Malware Analysis Report

2024-08-06 12:54

Sample ID 240614-r33kzayenl
Target build.exe
SHA256 eb80f953c60284fe958a4f44e7a9e75062e2711a8b01d77dd4438e6fd18d335a
Tags
stealerium collection 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

eb80f953c60284fe958a4f44e7a9e75062e2711a8b01d77dd4438e6fd18d335a

Threat Level: Known bad

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

Malicious Activity Summary

stealerium collection spyware stealer

Stealerium family

Stealerium

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

outlook_win_path

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

outlook_office_path

Checks processor information in registry

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
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

2024-06-14 14:43

Signatures

Stealerium family

stealerium

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 14:43

Reported

2024-06-14 14:46

Platform

win10v2004-20240611-en

Max time kernel

120s

Max time network

119s

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-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\build.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Office\16.0\Outlook\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

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

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 1384 wrote to memory of 1332 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1384 wrote to memory of 1332 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1384 wrote to memory of 1332 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1332 wrote to memory of 1200 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1332 wrote to memory of 1200 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1332 wrote to memory of 1200 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 1332 wrote to memory of 1116 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 1332 wrote to memory of 1116 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 1332 wrote to memory of 1116 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 1332 wrote to memory of 4680 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 1332 wrote to memory of 4680 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 1332 wrote to memory of 4680 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\findstr.exe
PID 1384 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1384 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 1384 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\build.exe C:\Windows\SysWOW64\cmd.exe
PID 3028 wrote to memory of 3012 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3028 wrote to memory of 3012 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3028 wrote to memory of 3012 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 3028 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3028 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe
PID 3028 wrote to memory of 4384 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\netsh.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\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-1-5-21-3665033694-1447845302-680750983-1000\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:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1276,i,7977653611488681184,6839495125838449898,262144 --variations-seed-version --mojo-platform-channel-handle=4380 /prefetch:8

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 208 -p 1384 -ip 1384

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 2244

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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
NL 23.62.61.75:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 75.61.62.23.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 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 232.138.159.162.in-addr.arpa udp
US 8.8.8.8:53 icanhazip.com udp
US 104.16.185.241:80 icanhazip.com tcp
US 8.8.8.8:53 241.185.16.104.in-addr.arpa udp
US 104.16.185.241:80 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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp

Files

memory/1384-0-0x000000007519E000-0x000000007519F000-memory.dmp

memory/1384-1-0x0000000000D40000-0x0000000000ED2000-memory.dmp

memory/1384-2-0x0000000005860000-0x00000000058C6000-memory.dmp

memory/1384-3-0x0000000075190000-0x0000000075940000-memory.dmp

memory/1384-6-0x0000000005DF0000-0x0000000005E82000-memory.dmp

memory/1384-7-0x0000000005E80000-0x0000000005EA6000-memory.dmp

memory/1384-8-0x0000000005EB0000-0x0000000005EB8000-memory.dmp

memory/1384-9-0x0000000006DD0000-0x0000000006DDA000-memory.dmp

memory/1384-10-0x0000000006DE0000-0x0000000006DE8000-memory.dmp

memory/1384-11-0x0000000006E00000-0x0000000006E1E000-memory.dmp

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\Browsers\Firefox\Bookmarks.txt

MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

memory/1384-65-0x0000000007620000-0x00000000076B2000-memory.dmp

memory/1384-70-0x0000000007C70000-0x0000000008214000-memory.dmp

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\System\Process.txt

MD5 16fadef56bd6cfaee375ab8abb2ccdd7
SHA1 e50f2d9dea3987c61059472b23a0b6c66739978b
SHA256 4a8e401f2ee5d1e5a2c1db9439e19ba93dedb0f8e608482890ae038df013aaf7
SHA512 dff235718b646849112787d289ff572c318490f0442071a7286a1d995d0fb793aff5e737a34f7d0e8b2d2a774dd8afbede111232ddd6c1385e08df31c08e55c7

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\System\Apps.txt

MD5 c6f6583121e944bb89d4a06d1ae9aa77
SHA1 1c81d0a0c953494c7fabbe951b9c57fe35b51fe2
SHA256 7fdaf7f5f361d38181555f9c79b23d7813efe03d9c6401291512980e8c441d16
SHA512 45a6f99767fa5057b10609f5afd666206a1f2a9f869e6dc89c9c6e267c40adabb3b8297bf8d5cbe2d432f5b6c39eb21331a8bb222c0f2e827c9f274a21348265

memory/1384-204-0x0000000006EE0000-0x0000000006F5A000-memory.dmp

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\Directories\OneDrive.txt

MD5 966247eb3ee749e21597d73c4176bd52
SHA1 1e9e63c2872cef8f015d4b888eb9f81b00a35c79
SHA256 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
SHA512 bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\Directories\Startup.txt

MD5 68c93da4981d591704cea7b71cebfb97
SHA1 fd0f8d97463cd33892cc828b4ad04e03fc014fa6
SHA256 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
SHA512 63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\System\Debug.txt

MD5 e722c73fb4644a582b4e8b84e39ee26c
SHA1 7ba21352e2e4bda1157864fbd0780d594381b382
SHA256 15b36f0b3a9123d1514ecd46b58b1c5472e042b90c53ad39bbe6ec54bc14b5ee
SHA512 29a87b3952e8df65a3bae74fe1a662fcc148cbd4239c9c404c15fc02d889bc5a9eca881e733419a1584b11b9edf8bcd7aee56afa53118e7e47f59084f410fb41

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\Directories\Videos.txt

MD5 1fddbf1169b6c75898b86e7e24bc7c1f
SHA1 d2091060cb5191ff70eb99c0088c182e80c20f8c
SHA256 a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
SHA512 20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

C:\Users\Admin\AppData\Local\e941a12eb17cedd7d184c0a363c9defa\Admin@PXHSTPPU_en-US\System\ProductKey.txt

MD5 71eb5479298c7afc6d126fa04d2a9bde
SHA1 a9b3d5505cf9f84bb6c2be2acece53cb40075113
SHA256 f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3
SHA512 7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd

memory/1384-277-0x0000000007140000-0x00000000071F2000-memory.dmp

memory/1384-279-0x0000000006FD0000-0x0000000006FF2000-memory.dmp

memory/1384-280-0x0000000008620000-0x0000000008974000-memory.dmp

memory/1384-281-0x0000000075190000-0x0000000075940000-memory.dmp