MALICIOUS — c27f5536670d3367c4a8fb95ed05ad7881d8cedfd031088ea235d11f374cdb82
MALICIOUS — c27f5536670d3367c4a8fb95ed05ad7881d8cedfd031088ea235d11f374cdb82 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Vobfus family. 4 of 55 detection engines flagged it, exhibiting 4 ATT&CK techniques.
Identification
- SHA-256:
c27f5536670d3367c4a8fb95ed05ad7881d8cedfd031088ea235d11f374cdb82 - SHA-1:
434f04e6206802dcb0efc4c2a7b1c10e05073403 - MD5:
cdfeacf98a215cee85cfdce6f278f2ee - imphash:
4dce2fa3d2a90cbd5604eb74159c77ab - ssdeep:
768:POLCt8HNBUZteEDc8ke1/B/uBJK0KVMfsRyRFBoytfDN/SBnGHbAEUDy3:P6BtEDEeZNbirbAw3 - TLSH:
T15938A3DB1264E485D0F9E61F2D453FEE6DCE8A81923B1618669E010F9DC06F36438B2D - Submitted as: c27f5536670d3367c4a8fb95ed05ad7881d8cedfd031088ea235d11f374cdb82
- File type: pe · Size: 81920 bytes
- Verdict: malicious (98/100) · 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 98/100 is the fusion of 8 weighted signals:
- ClamAV (daily) flagged Win.Worm.Vobfus-9805080-0 (rule
Win.Worm.Vobfus-9805080-0) - engine signal, weight 0.90, confidence 0.95 - Memory forensics: 2 finding(s), e.g. SSDT hook (rule
windows.ssdt.SSDT) - memory signal, weight 0.50, confidence 0.85 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 24 external host(s) at runtime (19 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)
35626 behavior events · 2 ATT&CK techniques · 9 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
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- licensing.mp.microsoft.com
- settings-win.data.microsoft.com
- windows.msn.com
- oneocsp.microsoft.com
Dropped files
- C:\Users\analyst\niece.exe -
12d6f364b3911fb919b0dabe197e2e602cb021f3f8cf3ee95a11253241e490d8 - ff50540477a50dc47cae5a1a6127a6dc646666f57b448d900594a8c92fe08607 -
ff50540477a50dc47cae5a1a6127a6dc646666f57b448d900594a8c92fe08607 - e179b1c7163ac6ad8ced185ea633112e49bab45cb6bad2c46828d8b4a5ab3178 -
e179b1c7163ac6ad8ced185ea633112e49bab45cb6bad2c46828d8b4a5ab3178 - 885748e60887f462589f089fdaa52c65c570e9aa96f187aa1c3bcd806a4242b4 -
885748e60887f462589f089fdaa52c65c570e9aa96f187aa1c3bcd806a4242b4 - ce563dc8492bbbd381f8584c99546fab14d81dd88ef69737c1d9be8a9d1fe101 -
ce563dc8492bbbd381f8584c99546fab14d81dd88ef69737c1d9be8a9d1fe101 - 28199beb5ac897b29e67e80ad8301a7fb4c176729280b97d5463b19bae216475 -
28199beb5ac897b29e67e80ad8301a7fb4c176729280b97d5463b19bae216475 - 2b091a877c1a41b95037ab9c6f1b4a8062fed362669568ff75ee2b64d077cc3c -
2b091a877c1a41b95037ab9c6f1b4a8062fed362669568ff75ee2b64d077cc3c - 3a20e51ddc53b93d1f159ad7a19b340ede87070261530b611ee50e99c2823ab2 -
3a20e51ddc53b93d1f159ad7a19b340ede87070261530b611ee50e99c2823ab2 - c704db869927f8d6b66e69532c2ad9c3ad29ec88f7ec7aa08854205ab480d6d6 -
c704db869927f8d6b66e69532c2ad9c3ad29ec88f7ec7aa08854205ab480d6d6
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/fa5c4269-9d03-4a47-8d97-be6931f0b22c/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/fa5c4269-9d03-4a47-8d97-be6931f0b22c?P1=1787935277&P2=404&P3=2&P4=ek4MygCd%2bLGg3Kq4L4RMnTE0wcTpQTtMZH5cVq%2fUICRdwHn%2b0Os2Ar6Pelcx656jcMh9HoglDdBIrb3lltRkUw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/51d86688-616b-47e3-abeb-3df16a1583c5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/51d86688-616b-47e3-abeb-3df16a1583c5?P1=1787935332&P2=404&P3=2&P4=k5FQbcxzfTbrcxNc5pB55UAV2a%2fq5blxKChRadSbPUiR7O4InXEnLxaZLwZ6OXx8rPEU9uGy0DgvQBKQZTmCTQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 4.150.223.110
- 20.247.185.124
- 57.155.101.212
- 4.230.171.124
- 40.84.97.4
- 74.179.77.204
- 52.182.143.212
- 74.178.240.51
- 20.231.239.246
- 52.123.128.14
- 52.123.129.14
- 203.26.79.13
- 135.234.160.246
- 162.159.142.9
- 52.123.252.215
- 74.179.71.159
- 52.123.252.194
- 52.148.114.188
- 172.178.240.162
- 135.234.160.244
- 72.145.35.100
- 92.223.78.30
- 52.110.12.31
- 52.110.12.52
More Vobfus samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report