MALICIOUS — virussign.com_e6b756ee29efc85a2aef20bd43cae650.vir

MALICIOUS — virussign.com_e6b756ee29efc85a2aef20bd43cae650.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the execute family. 8 of 53 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

• SHA-256: 4436ac238a76f2036433b2c17153ea2e3b56509eb131436ae8815c409beb4765
• SHA-1: 80613b951da862940ac0da081af569e94e8000f4
• MD5: e6b756ee29efc85a2aef20bd43cae650
• imphash: c3019422f1e3cb755291edeb04ac16b0
• ssdeep: 49152:ih7wUPPiusx3yd2OluON4fA9uLLwL+fZx/X3yd2OluON4fA9uk3yd2OluON4fA9m:ih8UPfsdLwL+fZx/Q
• TLSH: T1A35B3A476891D6BBDAB1822719204F8DA79444F2697FC80BF353850D1CC712B6AAC37B
• Submitted as: virussign.com_e6b756ee29efc85a2aef20bd43cae650.vir
• File type: pe · Size: 2288887 bytes
• Verdict: malicious (100/100) · Family: execute

Source: VirusSign · first seen 2026-07-17T00:00:00.000Z · 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: flagged
• Emsisoft (Emergency Kit): Win32.Floxif.A
• Kaspersky (KVRT): Virus.Win32.Pioneer.cz

MITRE ATT&CK

• T1059.001
• T1056.001
• T1112

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: 4 finding(s), e.g. RWX/private injected region in taskhostw.exe (pid 7864) (rule windows.malfind.Malfind) - memory signal, weight 0.60, confidence 0.85
• Microsoft Defender flagged flagged (rule flagged) - 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
• www.bing.com
• dns.msftncsi.com
• desktop-hsgcbep
• g.live.com
• fs.microsoft.com
• self.events.data.microsoft.com
• geo.prod.do.dsp.mp.microsoft.com
• www.msftncsi.com
• geover.prod.do.dsp.mp.microsoft.com
• watson.events.data.microsoft.com
• aps.prod.windows.com
• msedge.api.cdp.microsoft.com
• 192.168.122.106
• 192.168.122.1
• 192.168.122.255
• 239.255.255.250
• 224.0.0.252
• 192.168.122.108
• 192.168.122.105

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
• www.msftconnecttest.com
• www.bing.com
• dns.msftncsi.com
• g.live.com
• fs.microsoft.com
• self.events.data.microsoft.com
• geo.prod.do.dsp.mp.microsoft.com
• www.msftncsi.com
• geover.prod.do.dsp.mp.microsoft.com
• watson.events.data.microsoft.com
• aps.prod.windows.com
• msedge.api.cdp.microsoft.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:

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report