MALICIOUS — c4d671120432e7d4d00a231740b202a7edb8c4094ebda3fdfdead7c54b065f0b
MALICIOUS — c4d671120432e7d4d00a231740b202a7edb8c4094ebda3fdfdead7c54b065f0b is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (87/100), attributed to the Brontok family. 4 of 55 detection engines flagged it.
Identification
- SHA-256:
c4d671120432e7d4d00a231740b202a7edb8c4094ebda3fdfdead7c54b065f0b - SHA-1:
33b07d41be238700e66eb9b0262a4e302bc60ad1 - MD5:
8e14d575b369f72464a36c8e5be90b16 - imphash:
d41d8cd98f00b204e9800998ecf8427e - ssdeep:
1536:5u9nw/hT31GGG9nw/hT31GCSI6WB3IMeCn7EI5i:n5T3T5T3BF6sYMF7q - TLSH:
T11E34CF3F33F5BA14DBE385246FA5C1AC4B89176BF80D961095DE86480C49337B826F16 - Submitted as: c4d671120432e7d4d00a231740b202a7edb8c4094ebda3fdfdead7c54b065f0b
- File type: pe · Size: 54879 bytes
- Verdict: malicious (87/100) · Family: Brontok
Detections (4 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:J>eJ>e,J>eJ>e
- ClamAV (daily): Win.Worm.Brontok-9937872-0
- Microsoft Defender: Worm:Win32/Brontok.BJ@mm
- Emsisoft (Emergency Kit): Gen:Variant.Fragtor.15856
Why this verdict
The malicious score of 87/100 is the fusion of 2 weighted signals:
- ClamAV (daily) flagged Win.Worm.Brontok-9937872-0 (rule
Win.Worm.Brontok-9937872-0) - engine signal, weight 0.90, confidence 0.95 - Packing/obfuscation: high-entropy-sections:J>eJ>e,J>eJ>e - static signal, weight 0.25, confidence 0.55
Dynamic analysis (windows)
0 behavior events · 0 ATT&CK techniques · 0 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
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- officeclient.microsoft.com
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=1787845842&P2=404&P3=2&P4=ZjJKx4zFnxS%2bK6GscDJS4rMvq6PZJaqObUn0iMjySnD0sFXu9DCPWVH4mLC%2bCvCN9SdxZF7SjWmSOLqBrcS9zQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 4.150.223.98
- 4.230.171.124
- 40.84.85.40
- 52.253.84.76
- 135.232.92.34
- 74.179.77.204
- 4.150.223.114
- 74.178.240.51
- 203.26.79.13
- 135.233.95.144
- 52.123.129.14
- 20.112.250.133
- 52.148.114.188
- 52.110.12.14
- 52.110.12.40
- 72.145.35.96
More Brontok samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report