TCP SYN (p0f)

4:108+20:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-09-21 13:16 · last seen 2026-09-22 14:37 · JSON

Decomposed attributes

IP version4
Initial TTL108+20
Options length0
MSS1340
Window sizemtu*47
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
Payload class0

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d101100_01be160bb49b_36bf25f296df Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.5, powershell 5.1.26100.33296, +8 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07de00_806ad52065dd_000000000000_0000000000002
he11nn07en00_806ad52065dd_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-1-3-1-1-4_1340_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1; WOW64) SkypeUriPreview Preview/0.5 skype-url-preview@microsoft.com3

Country

fingerprintco-occurrences
IE · Ireland3

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation3