MALICIOUS — virussign.com_a7d50a0ae60c37fa0ff2b94381c64ab0.vir
MALICIOUS — virussign.com_a7d50a0ae60c37fa0ff2b94381c64ab0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Floxif family. 8 of 53 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
70c346986c593d98e30070bc310e531f4a3658a9bfeb3c053a0b172f1e86852f - SHA-1:
8e6c2d288c6f838f1bc6f4723d41da88c7a33aea - MD5:
a7d50a0ae60c37fa0ff2b94381c64ab0 - imphash:
c3019422f1e3cb755291edeb04ac16b0 - ssdeep:
49152:ih7wUlPi+sx3yd2OluON4fA9uLLwL+fZx/X3yd2OluON4fA9uk3yd2OluON4fA9K:ih8UlHsdLwL+fZx/4 - TLSH:
T1DF5B2A476891D6BBEAB1822719104F8DA79444F2697FC80BF353910D1CC712F6AA837B - Submitted as: virussign.com_a7d50a0ae60c37fa0ff2b94381c64ab0.vir
- File type: pe · Size: 2288887 bytes
- Verdict: malicious (100/100) · Family: Floxif
Source: VirusSign · first seen 2026-07-15T00:00:00.000Z · SHA-256 verified
Detections (8 of 53 engines)
- capa (capabilities): execute via PowerShell
- ClamAV (daily): Win.Virus.Pioneer-9111434-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- LIEF (executable format parser): lief:invalid-authenticode
- Microsoft Defender: Virus:Win32/Floxif.H
- Emsisoft (Emergency Kit): Win32.Floxif.A
- Kaspersky (KVRT): Virus.Win32.Pioneer.cz
MITRE ATT&CK
Why this verdict
The malicious score of 100/100 is the fusion of 12 weighted signals:
- ClamAV (daily) flagged Win.Virus.Pioneer-9111434-0 (rule
Win.Virus.Pioneer-9111434-0) - engine signal, weight 0.90, confidence 0.95 - Memory forensics: 5 finding(s), e.g. RWX/private injected region in taskhostw.exe (pid 6916) (rule
windows.malfind.Malfind) - memory signal, weight 0.60, confidence 0.85 - Microsoft Defender flagged Virus:Win32/Floxif.H (rule
Virus:Win32/Floxif.H) - engine signal, weight 0.55, confidence 0.85 - Emsisoft (Emergency Kit) flagged Win32.Floxif.A (rule
Win32.Floxif.A) - engine signal, weight 0.55, confidence 0.85 - execute via PowerShell (rule
execute via PowerShell) - capa signal, weight 0.40, confidence 0.80 - capture keystrokes (rule
capture keystrokes) - capa signal, weight 0.40, confidence 0.80 - YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - LIEF (executable format parser) flagged lief:invalid-authenticode (rule
lief:invalid-authenticode) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: http://tempuri.org, http://webservices.groove.net/Groove/2.0/GFS/, http://www.groove.net/Groove/2.0/GFS#CreateSession - 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 - Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
92 behavior events · 1 ATT&CK techniques · 0 dropped files.
Runtime network
- www.msftconnecttest.com
- searchapp.bundleassets.example
- staging.to-do.officeppe.com
- desktop-hsgcbep
- config.edge.skype.com
- www.bing.com
- fd.api.iris.microsoft.com
- aps.prod.windows.com
- dns.msftncsi.com
- tas02.sls.update.microsoft.com
- to-do.microsoft.com
- settings-win.data.microsoft.com
- ctldl.windowsupdate.com
- staging.to-do.microsoft.com
- edge.microsoft.com
- watson.events.data.microsoft.com
- g.live.com
- ecs.office.com
- www.msftncsi.com
- fs.microsoft.com
Embedded URLs
- http://crl.verisign.com/tss-ca.crl0
- http://crl.microsoft.com/pki/crl/products/CodeSignPCA2.crl0O
- http://office.microsoft.com
- http://tempuri.org
- http://webservices.groove.net/Groove/2.0/GFS/
- http://www.groove.net/Groove/2.0/GFS#CreateSession
- http://www.groove.net/Groove/2.0/GFS#GetSessionInfo
- http://www.groove.net/Groove/2.0/GFS#GetDisplayInfo
- http://www.groove.net/Groove/2.0/GFS#AddSessionView
- http://www.groove.net/Groove/2.0/GFS#RemoveSessionView
- http://www.groove.net/Groove/2.0/GFS#GetMemberList
- http://www.groove.net/Groove/2.0/GFS#DownloadFiles
- http://www.groove.net/Groove/2.0/GFS#GetDownloadStatus
- http://www.groove.net/Groove/2.0/GFS#SetupMultipleComputers
- http://www.groove.net/Groove/2.0/GFS#EditAlertSettings
- http://www.groove.net/Groove/2.0/GFS#EditDownloadSettings
- http://www.groove.net/Groove/2.0/GFS#ShowProperties
- http://www.groove.net/Groove/2.0/GFS#ShowSyncStatus
- http://www.groove.net/Groove/2.0/GFS#AddChatEntry
- http://www.groove.net/Groove/2.0/GFS#ExecChatCommand
- http://www.groove.net/Groove/2.0/GFS#GetChatUpdate
- http://www.groove.net/Groove/2.0/GFS#RemoveChatView
- http://www.groove.net/Groove/2.0/GFS#DeleteSession
- http://www.groove.net/Groove/2.0/GFS#MsgrSignIn
- http://www.groove.net/Groove/2.0/GFS#MsgrSendInstantMessage
Embedded domains
- crl.verisign.com
- crl.microsoft.com
- www.microsoft.com
- office.microsoft.com
- tempuri.org
- webservices.groove.net
- www.groove.net
- groove.net
- staging.to-do.officeppe.com
- www.msftconnecttest.com
- searchapp.bundleassets.example
- config.edge.skype.com
- www.bing.com
- fd.api.iris.microsoft.com
- aps.prod.windows.com
- dns.msftncsi.com
- tas02.sls.update.microsoft.com
- to-do.microsoft.com
- settings-win.data.microsoft.com
- ctldl.windowsupdate.com
- staging.to-do.microsoft.com
- edge.microsoft.com
- watson.events.data.microsoft.com
- g.live.com
- ecs.office.com
File paths
- d:\office\source\groove\include\GrooveATLObject.h
- d:\Office\Source\groove\bin\ReleaseSym\GrooveShellExtensions.pdb
- S:\:k:q:u:
- X:\:`:d:h:l:p:t:x:
- D:\:l:p:
- L:\:`:d:l:
- X:\:`:d:h:l:p:x:
- X:\:l:p:
- X:\:t:
- T:\:d:l:t:
- P:\:d:
- P:\:
- T:\:t:
- T:\:h:
- X:\:`:d:h:t:x:
More Floxif samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report