| File name: | javaw.exe |
| Full analysis: | https://app.any.run/tasks/be291f74-a3e8-43fe-bd74-c4baeafb05a5 |
| Verdict: | Malicious activity |
| Threats: | BlueSky ransomware, first identified in June 2022, shares code similarities with other well-known ransomware families like Conti and Babuk. It primarily spreads via phishing emails and malicious links and can propagate through networks using SMB protocols. BlueSky uses advanced evasion techniques, such as hiding its processes from debuggers via the NtSetInformationThread API, making it difficult for analysts to detect and mitigate its attacks. |
| Analysis date: | July 20, 2024, 13:05:23 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | D8A44D2ED34B5FEE7C8E24D998F805D9 |
| SHA1: | D8369CB0D8CCEC95B2A49BA34AA7749B60998661 |
| SHA256: | 3E035F2D7D30869CE53171EF5A0F761BFB9C14D94D9FE6DA385E20B8D96DC2FB |
| SSDEEP: | 1536:wBrE2D2ZjyKBQs8swOVWCqBTXdXu3+MkNCMm2i9w4:iBD2RfQ/7OVWS3+1rm2i9w4 |
MALICIOUS
Drops the executable file immediately after the start
- javaw.exe (PID: 3272)
Attempting to scan the network
- javaw.exe (PID: 3272)
Bluesky note has been found
- javaw.exe (PID: 3272)
Renames files like ransomware
- javaw.exe (PID: 3272)
SUSPICIOUS
Reads the date of Windows installation
- javaw.exe (PID: 3272)
Potential Corporate Privacy Violation
- javaw.exe (PID: 3272)
Creates files like ransomware instruction
- javaw.exe (PID: 3272)
INFO
Checks supported languages
- javaw.exe (PID: 3272)
Reads the computer name
- javaw.exe (PID: 3272)
Reads the machine GUID from the registry
- javaw.exe (PID: 3272)
Manual execution by a user
- rundll32.exe (PID: 3176)
Dropped object may contain TOR URL's
- javaw.exe (PID: 3272)
Creates files or folders in the user directory
- javaw.exe (PID: 3272)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2085:02:07 16:05:31+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 94.8 |
| CodeSize: | 67584 |
| InitializedDataSize: | 7168 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xe880 |
| OSVersion: | 5.1 |
| ImageVersion: | 48623.16013 |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
Total processes
39
Monitored processes
2
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3176 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\Desktop\leeintroduction.png.bluesky | C:\Windows\System32\rundll32.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3272 | "C:\Users\admin\AppData\Local\Temp\javaw.exe" | C:\Users\admin\AppData\Local\Temp\javaw.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
Total events
2 545
Read events
2 541
Write events
4
Delete events
0
Modification events
| (PID) Process: | (3272) javaw.exe | Key: | HKEY_CURRENT_USER\Software\9763CCC75B33F1BA24ABCB533E4CE199 |
| Operation: | write | Name: | RECOVERYBLOB |
Value: 7BEE250A7CBE69E4E41D00206640BE8B4F51A6F1B565F0C4E1F2BA94AA71A2C434C23364D7189F748066041C7153E3CC256C585EBC63702879627AA0565924AEB30726014B07EB3AC725395C1F22E3FF7B2D05B8BD4EF4F7EF8A07D7CA372B7A6B52BB60768B51610D92B8AE0ECF31504A0B3B31AA76C047 | |||
| (PID) Process: | (3272) javaw.exe | Key: | HKEY_CURRENT_USER\Software\9763CCC75B33F1BA24ABCB533E4CE199 |
| Operation: | write | Name: | x25519_public |
Value: 11F288D93DA07ABDB2F7B7329A43923BDC5C58FFB676A225F17C06433A45C118 | |||
| (PID) Process: | (3272) javaw.exe | Key: | HKEY_CURRENT_USER\Software\9763CCC75B33F1BA24ABCB533E4CE199 |
| Operation: | write | Name: | completed |
Value: 0 | |||
| (PID) Process: | (3272) javaw.exe | Key: | HKEY_CURRENT_USER\Software\9763CCC75B33F1BA24ABCB533E4CE199 |
| Operation: | write | Name: | completed |
Value: 1 | |||
Executable files
0
Suspicious files
139
Text files
104
Unknown types
7
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3272 | javaw.exe | C:\users\admin\# DECRYPT FILES BLUESKY #.txt | text | |
MD5:C02FEEC978FAC9B49ECBD3CA09C9F10B | SHA256:62B41D560EBB717226C42D4E2226C70D747A241233536CADBDB71BE84D343B36 | |||
| 3272 | javaw.exe | C:\users\admin\.oracle_jre_usage\# DECRYPT FILES BLUESKY #.html | html | |
MD5:4D3C7424C8D8B763BECED08ECC0FB356 | SHA256:9FCA7AE30677D8DA808F227B87B5553A92E4F4EA50F5EA04A57725D569B1E826 | |||
| 3272 | javaw.exe | C:\Users\admin\.oracle_jre_usage\90737d32e3abaa4.timestamp.bluesky | binary | |
MD5:547C23588D7EB23A93FC542DEBDD3D84 | SHA256:497F1693E5DB1B79A4FFA47F0DC6E14516050B2B768DCA11E5532A15BD1AC96E | |||
| 3272 | javaw.exe | C:\users\admin\# DECRYPT FILES BLUESKY #.html | html | |
MD5:4D3C7424C8D8B763BECED08ECC0FB356 | SHA256:9FCA7AE30677D8DA808F227B87B5553A92E4F4EA50F5EA04A57725D569B1E826 | |||
| 3272 | javaw.exe | C:\Users\admin\AppData\Local\VirtualStore\# DECRYPT FILES BLUESKY #.html | html | |
MD5:4D3C7424C8D8B763BECED08ECC0FB356 | SHA256:9FCA7AE30677D8DA808F227B87B5553A92E4F4EA50F5EA04A57725D569B1E826 | |||
| 3272 | javaw.exe | C:\users\admin\desktop\# DECRYPT FILES BLUESKY #.txt | text | |
MD5:C02FEEC978FAC9B49ECBD3CA09C9F10B | SHA256:62B41D560EBB717226C42D4E2226C70D747A241233536CADBDB71BE84D343B36 | |||
| 3272 | javaw.exe | C:\Users\admin\AppData\Local\VirtualStore\# DECRYPT FILES BLUESKY #.txt | text | |
MD5:C02FEEC978FAC9B49ECBD3CA09C9F10B | SHA256:62B41D560EBB717226C42D4E2226C70D747A241233536CADBDB71BE84D343B36 | |||
| 3272 | javaw.exe | C:\msocache\# DECRYPT FILES BLUESKY #.html | html | |
MD5:4D3C7424C8D8B763BECED08ECC0FB356 | SHA256:9FCA7AE30677D8DA808F227B87B5553A92E4F4EA50F5EA04A57725D569B1E826 | |||
| 3272 | javaw.exe | C:\users\admin\.oracle_jre_usage\90737d32e3abaa4.timestamp | binary | |
MD5:547C23588D7EB23A93FC542DEBDD3D84 | SHA256:497F1693E5DB1B79A4FFA47F0DC6E14516050B2B768DCA11E5532A15BD1AC96E | |||
| 3272 | javaw.exe | C:\users\admin\contacts\# DECRYPT FILES BLUESKY #.txt | text | |
MD5:C02FEEC978FAC9B49ECBD3CA09C9F10B | SHA256:62B41D560EBB717226C42D4E2226C70D747A241233536CADBDB71BE84D343B36 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
270
DNS requests
5
Threats
1
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1372 | svchost.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1372 | svchost.exe | GET | 304 | 93.184.221.240:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?33775f6043c93e33 | unknown | — | — | whitelisted |
1372 | svchost.exe | GET | 200 | 2.16.241.19:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1060 | svchost.exe | GET | 304 | 93.184.221.240:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?6db8a07497701bb0 | 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 |
|---|---|---|---|---|---|---|
1372 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1372 | svchost.exe | 93.184.221.240:80 | ctldl.windowsupdate.com | EDGECAST | GB | whitelisted |
— | — | 224.0.0.252:5355 | — | — | — | whitelisted |
1372 | svchost.exe | 2.16.241.19:80 | crl.microsoft.com | Akamai International B.V. | DE | unknown |
1372 | svchost.exe | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | unknown |
1060 | svchost.exe | 224.0.0.252:5355 | — | — | — | whitelisted |
— | — | 192.168.100.162:49238 | — | — | — | unknown |
— | — | 192.168.100.162:49239 | — | — | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
ctldl.windowsupdate.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3272 | javaw.exe | Potential Corporate Privacy Violation | POLICY [ANY.RUN] Attempting to scan SMB servers inside a home network. |