| File name: | Firefox Installer (2).exe |
| Full analysis: | https://app.any.run/tasks/4e95db04-1c3e-466f-9562-322d2a8f8594 |
| Verdict: | Malicious activity |
| Threats: | Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. |
| Analysis date: | August 07, 2024, 07:51:58 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed |
| MD5: | 7EE171948B423EC6E935B2DC74225F88 |
| SHA1: | E8B9B33C4AEDF884A7D08CDAE7F4833BA2429145 |
| SHA256: | FE7512F9F78A04E92DFEB3B18BB935556B6C4571A4DD712A99E06A9C19506A60 |
| SSDEEP: | 12288:ZSvvp2jRWmtab28ha98PPoOYz6/NhmMZtwIDqtzaVaSrD9:ZSHp2jQmAS0NPoOYz6/NhmIwIDq0VaSZ |
MALICIOUS
Drops the executable file immediately after the start
- Firefox Installer (2).exe (PID: 6500)
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Actions looks like stealing of personal data
- setup-stub.exe (PID: 6692)
SUSPICIOUS
Executable content was dropped or overwritten
- Firefox Installer (2).exe (PID: 6500)
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
The process creates files with name similar to system file names
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Malware-specific behavior (creating "System.dll" in Temp)
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Reads the date of Windows installation
- setup-stub.exe (PID: 6544)
Reads security settings of Internet Explorer
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Application launched itself
- setup-stub.exe (PID: 6544)
Checks Windows Trust Settings
- setup-stub.exe (PID: 6692)
Reads Microsoft Outlook installation path
- setup-stub.exe (PID: 6692)
Reads Internet Explorer settings
- setup-stub.exe (PID: 6692)
INFO
Create files in a temporary directory
- setup-stub.exe (PID: 6544)
- Firefox Installer (2).exe (PID: 6500)
- setup-stub.exe (PID: 6692)
Checks supported languages
- Firefox Installer (2).exe (PID: 6500)
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Reads the computer name
- Firefox Installer (2).exe (PID: 6500)
- setup-stub.exe (PID: 6544)
- setup-stub.exe (PID: 6692)
Process checks whether UAC notifications are on
- setup-stub.exe (PID: 6544)
Process checks computer location settings
- setup-stub.exe (PID: 6544)
Reads the software policy settings
- setup-stub.exe (PID: 6692)
Creates files in the program directory
- setup-stub.exe (PID: 6692)
Checks proxy server information
- setup-stub.exe (PID: 6692)
Reads the machine GUID from the registry
- setup-stub.exe (PID: 6692)
Creates files or folders in the user directory
- setup-stub.exe (PID: 6692)
Process checks Internet Explorer phishing filters
- setup-stub.exe (PID: 6692)
UPX packer has been detected
- Firefox Installer (2).exe (PID: 6500)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | UPX compressed Win32 Executable (64.2) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.6) |
| .exe | | | Win32 Executable (generic) (10.6) |
| .exe | | | Generic Win/DOS Executable (4.7) |
| .exe | | | DOS Executable Generic (4.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2018:08:30 22:18:33+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 69632 |
| InitializedDataSize: | 65536 |
| UninitializedDataSize: | 147456 |
| EntryPoint: | 0x34fa0 |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 18.5.0.0 |
| ProductVersionNumber: | 18.5.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Mozilla |
| FileDescription: | Firefox |
| FileVersion: | 18.05 |
| InternalName: | 7zS.sfx |
| LegalCopyright: | Mozilla |
| OriginalFileName: | 7zS.sfx.exe |
| ProductName: | Firefox |
| ProductVersion: | 18.05 |
Total processes
135
Monitored processes
3
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6500 | "C:\Users\admin\AppData\Local\Temp\Firefox Installer (2).exe" | C:\Users\admin\AppData\Local\Temp\Firefox Installer (2).exe | explorer.exe | ||||||||||||
User: admin Company: Mozilla Integrity Level: MEDIUM Description: Firefox Version: 18.05 Modules
| |||||||||||||||
| 6544 | .\setup-stub.exe | C:\Users\admin\AppData\Local\Temp\7zS46949A2E\setup-stub.exe | Firefox Installer (2).exe | ||||||||||||
User: admin Company: Mozilla Corporation Integrity Level: MEDIUM Description: Firefox Installer Version: 129.0 Modules
| |||||||||||||||
| 6692 | "C:\Users\admin\AppData\Local\Temp\7zS46949A2E\setup-stub.exe" /UAC:402AE /NCRC | C:\Users\admin\AppData\Local\Temp\7zS46949A2E\setup-stub.exe | setup-stub.exe | ||||||||||||
User: admin Company: Mozilla Corporation Integrity Level: HIGH Description: Firefox Installer Version: 129.0 Modules
| |||||||||||||||
Total events
7 540
Read events
7 531
Write events
9
Delete events
0
Modification events
| (PID) Process: | (6692) setup-stub.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\TaskBarIDs |
| Operation: | write | Name: | C:\Program Files\Mozilla Firefox |
Value: 308046B0AF4A39CB | |||
| (PID) Process: | (6692) setup-stub.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (6692) setup-stub.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (6692) setup-stub.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (6692) setup-stub.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
Executable files
10
Suspicious files
2
Text files
7
Unknown types
1
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6544 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsn506E.tmp\UAC.dll | executable | |
MD5:D23B256E9C12FE37D984BAE5017C5F8C | SHA256:EC6A56D981892BF251DF1439BEA425A5F6C7E1C7312D44BEDD5E2957F270338C | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsz531E.tmp\UAC.dll | executable | |
MD5:D23B256E9C12FE37D984BAE5017C5F8C | SHA256:EC6A56D981892BF251DF1439BEA425A5F6C7E1C7312D44BEDD5E2957F270338C | |||
| 6544 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsn506E.tmp\System.dll | executable | |
MD5:B361682FA5E6A1906E754CFA08AA8D90 | SHA256:B711C4F17690421C9DC8DDB9ED5A9DDC539B3A28F11E19C851E25DCFC7701C04 | |||
| 6500 | Firefox Installer (2).exe | C:\Users\admin\AppData\Local\Temp\7zS46949A2E\postSigningData | text | |
MD5:1EDE119215051930CDD076DC12CD2176 | SHA256:ED5A73E335B9A2A78807EC35D96B395A3CEC72930EE6BDE484FF4BA37289DE26 | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsz531E.tmp\UserInfo.dll | executable | |
MD5:610AD03DEC634768CD91C7ED79672D67 | SHA256:C6C413108539F141BEA3F679E0E2EF705898C51EC7C2607F478A865FC5E2E2DF | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsz531E.tmp\System.dll | executable | |
MD5:B361682FA5E6A1906E754CFA08AA8D90 | SHA256:B711C4F17690421C9DC8DDB9ED5A9DDC539B3A28F11E19C851E25DCFC7701C04 | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsz531E.tmp\bgstub.jpg | image | |
MD5:C55F15CEEDC724D6C6E15D1DAF96B698 | SHA256:4B7E441D51B790EE1C0BAFF19E4E968392A937877DFA8B84E74464F5BA7A4CF4 | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\75CA58072B9926F763A91F0CC2798706_056B48C93C4964C2E64C0A8958238656 | binary | |
MD5:37A32173708D430C152EF618275112E1 | SHA256:99D2233B561E352608FDCE6E7FA222C775A73D1EBDE8F425E8BB9A36423C6687 | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\Local\Temp\nsz531E.tmp\stub_common.js | text | |
MD5:EFCE3DCE0165B3F6551DB47E5C0AC8D6 | SHA256:DAB39CBAE31848CCE0B5C43FDDD2674FEF4DEA5B7A3DACDAABDC78A8A931817E | |||
| 6692 | setup-stub.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\75CA58072B9926F763A91F0CC2798706_056B48C93C4964C2E64C0A8958238656 | der | |
MD5:A80C2B50C55DDB852168220DE8513157 | SHA256:CBD470D3988BC637B6536F03320B5245402EA109CCE526885F671B1E1069E177 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
43
DNS requests
17
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6692 | setup-stub.exe | GET | 200 | 18.245.39.64:80 | http://ocsp.rootca1.amazontrust.com/MFQwUjBQME4wTDAJBgUrDgMCGgUABBRPWaOUU8%2B5VZ5%2Fa9jFTaU9pkK3FAQUhBjMhTTsvAyUlC4IWZzHshBOCggCEwdzEkpLy9ROx7U76vGUhC06D6E%3D | unknown | — | — | unknown |
4436 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
4436 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
5336 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
6396 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
7132 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
3972 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5112 | RUXIMICS.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2120 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
3888 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
6692 | setup-stub.exe | 108.138.26.53:443 | product-details.mozilla.org | AMAZON-02 | US | unknown |
6692 | setup-stub.exe | 18.245.39.64:80 | ocsp.rootca1.amazontrust.com | — | US | unknown |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
5336 | SearchApp.exe | 2.16.101.97:443 | www.bing.com | Akamai International B.V. | DE | unknown |
5336 | SearchApp.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
product-details.mozilla.org |
| shared |
ocsp.rootca1.amazontrust.com |
| shared |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
th.bing.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |