IOC Radar
IPMediumSignal 38/100

171.243.87.21

Location
VietnamVietnam
Ho Chi Minh City, Ho Chi Minh
ASN
AS7552
VIETEL
First Seen
Jul 4, 2025
Last Seen
Apr 8, 2026
Jul 4
First Seen
342d ago
Apr 8
Last Seen
64d ago
10
Reports
source reports
38%
Confidence
medium
1/91
VirusTotal
detections
Found in 10 reports. Confidence: medium. · Confidence scores are heuristic. Verify before acting on results.
IPv4 Address
Network layer indicator observed in threat reports.
MISP Category
Network Activity
Confidence
38%
Signal Score
38 / 100
IDS Rule
No
Threat Context
Tags
MITRE ATT&CK

MITRE ATT&CK TTPs

23 techniques

Network Information

CountryVNVietnam
RegionHo Chi Minh City, Ho Chi Minh
ASNAS7552
OrganizationVIETEL

Feed Intelligence Summary

10 reports38% confidence
10
Source reports
38%
Confidence score
Category tags
abuseactive scanactive scanningasiaattackbad reputationbotnetbotnet activitybrute forcebrute force attackcommand and controlcredential accesscredential stuffingdata exfiltrationdata store exposuredistributed attacksexploitation activityidentity & access exploitationindicatorinitial accessinjection activitymalicious activitymalicious softwaremalwarenetworknetwork intrusionnetwork reconnaissancenetwork scanningnetwork securitynorth americapassword attacksprocess injectionprotocol exploitationreconnaissanceremote accessresearchedscannert1021t1021.004t1040t1046t1055t1059t1059.001t1071.001t1078t1110t1110.001t1110.002t1110.003t1110.004t1486t1496t1499.002t1499.003t1565t1595t1595.001t1595.002t1595.003tcp/23telnet threatthreat actortor nodeunited statesvietnam

Activity Timeline

1 total obs
Apr 8Apr 8

Threat Activity Heatmap

· Peak: 2026-04-08
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24h
0
Dormant
7d
0
Dormant
30d
0
Dormant
3mo
1
Minimal
Threat ScoreLow Risk
38
SIGNAL
Signal Score
38%
Confidence
10
Reports
First seenJul 4, 2025
Last seenApr 8, 2026
GeolocationVN
CountryVietnam
LocationHo Chi Minh City, Ho Chi Minh
ASNAS7552
OrgVIETEL
Coords16.0020, 105.9984

VirusTotal

1/ 91vendors flagged
1% detection rateJun 8, 2026

WHOIS

description
Logged 1 visit on 1 honeypot. Duration: 60.36s, did not supply credentials
raw
inetnum: 171.224.0.0 - 171.255.255.255 netname: VIETTEL-VN descr: Viettel Group descr: No 1, Tran Huu Duc street, My Dinh 2 ward, Nam Tu Liem district, Ha Noi City country: VN admin-c: TVT8-AP tech-c: NDT9-AP status: ALLOCATED PORTABLE mnt-irt: IRT-VNNIC-AP mnt-by: MAINT-VN-VNNIC last-modified: 2017-11-11T09:43:21Z source: APNIC irt: IRT-VNNIC-AP address: Ha Noi, VietNam phone: +84-24-35564944 fax-no: +84-24-37821462 e-mail: [email protected] abuse-mailbox: [email protected] admin-c: NTTT1-AP tech-c: NTTT1-AP auth: # Filtered mnt-by: MAINT-VN-VNNIC last-modified: 2017-11-08T09:40:06Z source: APNIC person: Nguyen Dang Tiep address: Viettel Network Corporation address: No 1, Tran Huu Duc street, My Dinh 2 ward, Nam Tu Liem district, Ha Noi City country: VN phone: +84-24-62989898 e-mail: [email protected] nic-hdl: NDT9-AP mnt-by: MAINT-VN-VIETEL last-modified: 2017-11-11T09:40:35Z source: APNIC person: Tran Van Thanh address: Viettel Network Corporation address: No 1, Tran Huu Duc street, My Dinh 2 ward, Nam Tu Liem district, Ha Noi City country: VN phone: +84-24-62989898 e-mail: [email protected] nic-hdl: TVT8-AP mnt-by: MAINT-VN-VIETEL last-modified: 2018-08-21T09:57:13Z source: APNIC route: 171.243.87.0/24 descr: VIETTEL-VN origin: AS7552 mnt-by: MAINT-VN-VNNIC last-modified: 2023-05-26T18:07:35Z source: APNIC

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IOC Journey

medium
First detected 11 months ago · Last seen 2 months ago
Appeared in 10 threat reports