MALICIOUS — 9b4a414bcdd61b79d6a0746434f7401da4c5bbbb3111beb9b2d4fc719b1250dc
MALICIOUS — 9b4a414bcdd61b79d6a0746434f7401da4c5bbbb3111beb9b2d4fc719b1250dc is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Vobfus family. 4 of 55 detection engines flagged it, exhibiting 5 ATT&CK techniques.
Identification
- SHA-256:
9b4a414bcdd61b79d6a0746434f7401da4c5bbbb3111beb9b2d4fc719b1250dc - SHA-1:
8a5bc9827aeb9c189225e24f78ee8ace03b8c09c - MD5:
f7e52b5012cd66e7215192014bbca305 - imphash:
4dce2fa3d2a90cbd5604eb74159c77ab - ssdeep:
768:UTLCd9y8yc0Rlc8ke1/B/uBJK0KVMfsRyRFBoytfDN/SBnGHbAEUDbI:UeycneZNbirbAdI - TLSH:
T1E638919F2315E542C0E9E15FDE242F9E25DD83869237217835AE010E7DC27B39438A6E - Submitted as: 9b4a414bcdd61b79d6a0746434f7401da4c5bbbb3111beb9b2d4fc719b1250dc
- File type: pe · Size: 81920 bytes
- Verdict: malicious (99/100) · Family: Vobfus
Detections (4 of 55 engines)
- ClamAV (daily): Win.Worm.Vobfus-9805080-0
- Microsoft Defender: Worm:Win32/Vobfus.F
- Emsisoft (Emergency Kit): Gen:Trojan.Chinky.2
- Kaspersky (KVRT): Worm.Win32.Vobfus.exhw
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 9 weighted signals:
- ClamAV (daily) flagged Win.Worm.Vobfus-9805080-0 (rule
Win.Worm.Vobfus-9805080-0) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 23 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- enumerate processes (rule
enumerate processes) - capa signal, weight 0.20, confidence 0.60 - Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
99107 behavior events · 3 ATT&CK techniques · 6 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ns4.epictureh.net
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- officeclient.microsoft.com
Dropped files
- C:\Users\analyst\fumar.exe -
1f1dd98d6df25214417a30cfc3cb963e4dcf4f7eb471537207a26f2e1e9b70ab - 2a02b4bf59417c66028e69420778f31794a1316a616ce1b12422bb521ba01ef6 -
2a02b4bf59417c66028e69420778f31794a1316a616ce1b12422bb521ba01ef6 - 0faee7fab48de80dc2df1166efd0b5514e9d32cfc36dd8756b9463d76cba62cd -
0faee7fab48de80dc2df1166efd0b5514e9d32cfc36dd8756b9463d76cba62cd - e7afc3b795cf84ea0338a5e64c061c9b03f052a32b42cf6c7deb485f0114c8c4 -
e7afc3b795cf84ea0338a5e64c061c9b03f052a32b42cf6c7deb485f0114c8c4 - 1341062d29ab2802d68d811d10d76812fbf9b58867e3411a78f29e8a941fce85 -
1341062d29ab2802d68d811d10d76812fbf9b58867e3411a78f29e8a941fce85 - 2191f53b6fbc4830c9c3a03aa07f035c6c5498c78a7c7ea81f82cd809a0028b4 -
2191f53b6fbc4830c9c3a03aa07f035c6c5498c78a7c7ea81f82cd809a0028b4
Embedded URLs
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787841955&P2=404&P3=2&P4=TtfDxaWJMzCvfqXc5LA5HzYYW5ajSGdN2mWmJi5hJrMmCKfj3zfkLebpPL3rap9t4JT8ZL7TG%2fqZW5hZuVz2gQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787842012&P2=404&P3=2&P4=aP%2fQc947zwsmBXbRluU%2bdcQsXC7B8HdEOKl0ciqogiawSmQ4ECrsFg%2byTlQJIRsUjnNq5foHpTB7cFBJshL2ow%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- ns4.epictureh.net
Embedded IP addresses
- 20.184.175.9
- 52.123.252.230
- 40.84.97.4
- 4.230.171.124
- 4.247.188.224
- 4.144.132.223
- 135.232.92.137
- 74.179.77.164
- 4.150.223.105
- 20.76.201.171
- 52.123.129.14
- 20.184.175.19
- 203.26.79.13
- 172.178.240.161
- 52.148.114.188
- 135.234.160.246
- 135.233.95.80
- 72.154.7.98
- 20.42.65.90
- 13.69.109.131
- 92.223.78.30
- 52.110.12.49
- 52.110.12.44
More Vobfus samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report