MALICIOUS — virussign.com_15a71f58ad561ea57de5f8ddab5992b0.vir
MALICIOUS — virussign.com_15a71f58ad561ea57de5f8ddab5992b0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Pioneer family. 5 of 52 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
24b456ca71cc988d8b0771320c600f3390450e6fb817ca824be3f06bdbff16af - SHA-1:
6eef890523ea7ec9113e30396ed7e92ffd64d821 - MD5:
15a71f58ad561ea57de5f8ddab5992b0 - imphash:
7f33ec0ad145348f43ee72ea60a50c60 - ssdeep:
49152:qd0krhjbVYU9U/ElyriKlvGBO58GBjG9nYM6JBU4PjnhMsQHNClhIdYTf2O+yX3I:PkrRy7lvGB65YNC2ghMtHIledkp+Rgr+ - TLSH:
T1125D9DECA140A263D0ABBE9419D18E4F385B9C44E0715CB452CAF01B77F8D6BE885379 - Submitted as: virussign.com_15a71f58ad561ea57de5f8ddab5992b0.vir
- File type: pe · Size: 2727879 bytes
- Verdict: malicious (99/100) · Family: Pioneer
Source: VirusSign · first seen 2026-07-31T00:00:00.000Z · SHA-256 verified
Detections (5 of 52 engines)
- ClamAV (daily): Win.Virus.Pioneer-9111434-0
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Kaspersky (KVRT): Virus.Win32.Pioneer.cz
- Microsoft Defender: Virus:Win32/Floxif.H
- Emsisoft (Emergency Kit): Win32.Floxif.A
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Virus.Pioneer-9111434-0 (rule
Win.Virus.Pioneer-9111434-0) - engine signal, weight 0.90, confidence 0.95 - Dropped a malicious payload: de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085 - dynamic signal, weight 0.80, confidence 0.90
- Contacted 35 external host(s) at runtime (22 HTTP) - network signal, weight 0.40, confidence 0.80
- Extracted FloodFix config (0 C2) - engine signal, weight 0.45, confidence 0.60
- YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: http://python.org/dev/peps/pep-0263/ - static signal, weight 0.35, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
15108 behavior events · 1 ATT&CK techniques · 1 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
- settings-win.data.microsoft.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- licensing.mp.microsoft.com
- windows.msn.com
- officeclient.microsoft.com
Dropped files
- /opt/CAPEv2/storage/analyses/30255/files/de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085 -
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
Embedded URLs
- http://python.org/dev/peps/pep-0263/
- 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/2cbcf400-ac8d-4d86-9d69-c7f0dff56d2e/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/2cbcf400-ac8d-4d86-9d69-c7f0dff56d2e?P1=1787079060&P2=404&P3=2&P4=Mx52tA3dRkqIrwjDseLF8erqvD4P5E572WfZyskgOwKUvByIaOJc9sc9VaVvXgk6XsUZcrCZOepOeByzNTpsCg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- command.com
- x.name
- python.org
- r.name
Embedded IP addresses
- 20.42.179.204
- 4.207.44.75
- 52.253.84.76
- 4.230.171.124
- 74.178.240.61
- 135.233.95.135
- 20.42.65.89
- 52.123.129.14
- 20.231.239.246
- 40.103.64.242
- 52.123.128.14
- 52.168.117.169
- 135.233.95.80
- 203.26.79.13
- 135.233.45.223
- 135.234.160.244
- 52.148.114.188
- 72.145.35.105
- 52.110.12.42
- 52.110.12.45
File paths
- R:\Sg
- C:\build27\cpython\PCBuild\python27.pdb
- M:\:V;_;
- T:\:d:r:}:
- J:\:
- W:\:k:
- X:\:`:d:h:l:p:t:)
- T:\:a:f:k:q:z:
- X:\:`:d:h:l:p:t:x:
- D:\:t:
- D:\:
- X:\:
- X:\:d:h:l:t:x:
- X:\:h:l:x:
- X:\:d:h:l:t:
- T:\:`:d:l:p:t:
More Pioneer samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report