Analysis Overview
SHA256
ccb9b6b18a926cb5429ce957478416a5bbe19b9124521d1974454d0ff0fde17e
Threat Level: Known bad
The file PcOptimizer.exe was found to be: Known bad.
Malicious Activity Summary
Stealerium
Stealerium family
Reads user/profile data of web browsers
Looks up external IP address via web service
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Drops file in Windows directory
Unsigned PE
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Checks processor information in registry
Checks SCSI registry key(s)
Suspicious behavior: GetForegroundWindowSpam
outlook_win_path
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
outlook_office_path
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-18 03:36
Signatures
Stealerium family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-18 03:36
Reported
2024-01-18 04:08
Platform
win10-20231215-en
Max time kernel
1798s
Max time network
1609s
Command Line
Signatures
Stealerium
Reads user/profile data of web browsers
Accesses Microsoft Outlook profiles
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-1364394410-760759377-2797241167-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-1364394410-760759377-2797241167-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-1364394410-760759377-2797241167-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | icanhazip.com | N/A | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\rescache\_merged\1601268389\3877292338.pri | C:\Windows\system32\taskmgr.exe | N/A |
| File created | C:\Windows\rescache\_merged\4183903823\810424605.pri | C:\Windows\system32\taskmgr.exe | N/A |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\msiexec.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-1364394410-760759377-2797241167-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-1364394410-760759377-2797241167-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\PcOptimizer.exe
"C:\Users\Admin\AppData\Local\Temp\PcOptimizer.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\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\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /7
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | discord.com | udp |
| US | 162.159.135.232:443 | discord.com | tcp |
| US | 8.8.8.8:53 | 232.135.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | icanhazip.com | udp |
| US | 104.18.115.97:80 | icanhazip.com | tcp |
| US | 8.8.8.8:53 | 97.115.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.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 | 104.18.115.97:80 | icanhazip.com | tcp |
| US | 8.8.8.8:53 | 74.19.199.152.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.gofile.io | udp |
| FR | 151.80.29.83:443 | api.gofile.io | tcp |
| US | 8.8.8.8:53 | store1.gofile.io | udp |
| FR | 31.14.70.242:443 | store1.gofile.io | tcp |
| US | 8.8.8.8:53 | 83.29.80.151.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 242.70.14.31.in-addr.arpa | udp |
| US | 104.18.115.97:80 | icanhazip.com | tcp |
| US | 162.159.135.232:443 | discord.com | tcp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 193.98.74.40.in-addr.arpa | udp |
Files
memory/4756-0-0x0000000000320000-0x00000000004B2000-memory.dmp
memory/4756-1-0x0000000073930000-0x000000007401E000-memory.dmp
memory/4756-2-0x0000000004CD0000-0x0000000004D36000-memory.dmp
memory/4756-3-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-7-0x0000000005230000-0x00000000052C2000-memory.dmp
memory/4756-8-0x00000000052C0000-0x00000000052E6000-memory.dmp
memory/4756-9-0x00000000052F0000-0x00000000052F8000-memory.dmp
memory/4756-10-0x00000000061B0000-0x00000000061BA000-memory.dmp
memory/4756-11-0x00000000061C0000-0x00000000061C8000-memory.dmp
memory/4756-12-0x00000000061E0000-0x00000000061FE000-memory.dmp
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\Browsers\Firefox\Bookmarks.txt
| MD5 | 2e9d094dda5cdc3ce6519f75943a4ff4 |
| SHA1 | 5d989b4ac8b699781681fe75ed9ef98191a5096c |
| SHA256 | c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142 |
| SHA512 | d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7 |
memory/4756-54-0x0000000006850000-0x00000000068E2000-memory.dmp
memory/4756-59-0x0000000007040000-0x000000000753E000-memory.dmp
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\System\Process.txt
| MD5 | 0cb1b94f6a35dddc4b35b9f198aa7e59 |
| SHA1 | dc36fc08a8d31e9e7b6b8830a0fc2e0f466b6507 |
| SHA256 | dcd3b2bc155effae6415c52f4e37c46e6ad665f63a1e372065d565539ba6fa8c |
| SHA512 | 643c9216f3cf690b1e8dd57c8fa31bdcb438286ff7444b404af687925b6a1f849a5d3781a91943574c1e4b42e997e1bfac959840102d1e4fada1b865db4241b8 |
memory/4756-139-0x0000000000D10000-0x0000000000D20000-memory.dmp
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\System\Apps.txt
| MD5 | 1efa189820620a27e59f77d8f16b0e35 |
| SHA1 | c0ec03434375bec1f693d569077576f7d16c1407 |
| SHA256 | 8bfa30c18c019101ce7b848a428994dfdc4d925db3276bbb6d541fa55e4802fd |
| SHA512 | 9651b4eb6eac841228818aa2ab17c2a76640c1a46f686953f83476489f8e390baa9b5b4a0d28ae4a99cc6f8384ed977bb38cf41ab50df08608a7f62d39851176 |
memory/4756-165-0x00000000062E0000-0x000000000635A000-memory.dmp
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\Directories\OneDrive.txt
| MD5 | 966247eb3ee749e21597d73c4176bd52 |
| SHA1 | 1e9e63c2872cef8f015d4b888eb9f81b00a35c79 |
| SHA256 | 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e |
| SHA512 | bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa |
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\System\Debug.txt
| MD5 | a0ff51f24c8f2636e04b6143cb6bb605 |
| SHA1 | 34fb946a36582cb758e5a6884e131fc04b16397a |
| SHA256 | 00d610daad65358380ddc0e8bf8452b8ab63eafdd59a2b37154ce92016d1c402 |
| SHA512 | 1b4043a73869f4b9bdfa3068c32b66be163d50247e7264a98a97be885c36e0a4630594ab5dffcec302b8728850bf205b6acd9d37365a21e0705542acc6694fd5 |
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\Directories\Videos.txt
| MD5 | 1fddbf1169b6c75898b86e7e24bc7c1f |
| SHA1 | d2091060cb5191ff70eb99c0088c182e80c20f8c |
| SHA256 | a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733 |
| SHA512 | 20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d |
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\Directories\Startup.txt
| MD5 | 68c93da4981d591704cea7b71cebfb97 |
| SHA1 | fd0f8d97463cd33892cc828b4ad04e03fc014fa6 |
| SHA256 | 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483 |
| SHA512 | 63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402 |
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\Admin@CFZMTHEF_en-US\System\ProductKey.txt
| MD5 | 71eb5479298c7afc6d126fa04d2a9bde |
| SHA1 | a9b3d5505cf9f84bb6c2be2acece53cb40075113 |
| SHA256 | f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3 |
| SHA512 | 7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd |
memory/4756-234-0x0000000006720000-0x00000000067D2000-memory.dmp
memory/4756-241-0x0000000002740000-0x0000000002762000-memory.dmp
memory/4756-242-0x0000000008940000-0x0000000008C90000-memory.dmp
memory/4756-246-0x0000000073930000-0x000000007401E000-memory.dmp
memory/4756-247-0x0000000000D10000-0x0000000000D20000-memory.dmp
C:\Users\Admin\AppData\Local\78c09df400ba7309548c26aa73a1ee26\msgid.dat
| MD5 | 75e5a3421bad6f4801b50d5d643567c3 |
| SHA1 | a1d5400a9851d133a6a46a57fe786d818f5f8999 |
| SHA256 | 7e506d8e40b15bcbeac88ffdb26f147e1c0ea423f0e082ec77ce739006367fdf |
| SHA512 | 4ffd5f4be4fb4a89978ca4deca640b6dc7bd7af3e7fccb2ee96558a588ef2149f9cd915f426eeafbbf04902a214c5fe5c25c6ccfab8a8838de06f8f26792e6c1 |
memory/4756-258-0x00000000063E0000-0x00000000063EA000-memory.dmp
memory/4756-259-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-263-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-264-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-265-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-266-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-267-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-268-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-269-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-270-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-271-0x0000000000D10000-0x0000000000D20000-memory.dmp
memory/4756-272-0x0000000000D10000-0x0000000000D20000-memory.dmp