MALICIOUS — a4cbfb5d2239e0c92d7c3e9c8db6333aeaf63aace914bbcc5583d286909bb8af
MALICIOUS — a4cbfb5d2239e0c92d7c3e9c8db6333aeaf63aace914bbcc5583d286909bb8af is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100). 5 of 55 detection engines flagged it, exhibiting 4 ATT&CK techniques.
Identification
- SHA-256:
a4cbfb5d2239e0c92d7c3e9c8db6333aeaf63aace914bbcc5583d286909bb8af - SHA-1:
33ce22c564e720a83daf1d0fa8045c705192a217 - MD5:
71db674d934e6b0260c714e25c74c478 - imphash:
521a28383c5f98cbb04ce2f46d621574 - ssdeep:
3072:HLVfxcPvlG9KQcJJ78IrDlq2RzFq247DCLTzltNSFN9b23y0PEOmuHw794rK9fz:HJxcPvo9KQcJJ78IrDlq2RzFq247DCL - TLSH:
T1C83E74FEA20E8985D4AEF4161A7728BC816FCC50E1B615846EB93F2D12C16377359C2C - Submitted as: a4cbfb5d2239e0c92d7c3e9c8db6333aeaf63aace914bbcc5583d286909bb8af
- File type: pe · Size: 145920 bytes
- Verdict: malicious (99/100)
Detections (5 of 55 engines)
- ClamAV (daily): Win.Trojan.VB-1156
- Microsoft Defender: Worm:Win32/Vobfus.AC
- Emsisoft (Emergency Kit): Trojan.GenericKDZ.96618
- Trellix Stinger (McAfee): Downloader-CJX.gen.g
- Kaspersky (KVRT): Worm.Win32.WBNA.ipa
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 9 weighted signals:
- ClamAV (daily) flagged Win.Trojan.VB-1156 (rule
Win.Trojan.VB-1156) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Memory forensics: 3 finding(s), e.g. process hidden from a listing (rule
windows.psxview.PsXView) - memory signal, weight 0.55, confidence 0.85 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 24 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
26847 behavior events · 3 ATT&CK techniques · 3 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
- ns3.video-shares.comh
- ns1.video-shares.net
- ns3.video-shares.org
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
Dropped files
- C:\Users\analyst\vaooki.exe -
b72359867212b72487e23fc57fd791f336a50aad32756666233cdf46e11f8d20 - 950f8d5cbdfaf5675eadc32a844fc5f4df31da291b86839433a6575a95c01622 -
950f8d5cbdfaf5675eadc32a844fc5f4df31da291b86839433a6575a95c01622 - b163e686d07a3d2e7750b9c7cdc70a90da01c8b7a5a8c173cbdd01cb95e7cf2b -
b163e686d07a3d2e7750b9c7cdc70a90da01c8b7a5a8c173cbdd01cb95e7cf2b
Embedded URLs
- 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/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787771612&P2=404&P3=2&P4=iZ5sQnw%2bd601mm2aPwf4CJlHZmrX3cY9mQaRtfX76F6G1HmzYc%2b2oZs%2fge9CvBZU9TpIm85SZG2DON6DPJ7vVQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787771676&P2=404&P3=2&P4=Z3IZ1Mmh5n2siZ6GLuJoMTNowrIlMnf3nvlVnmOKS0xPiTPlMu1ztJhDDdTFC4AncnJpFTILktzISPOkXDNxFQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- ns3.video-shares.comh
- ns1.video-shares.net
- ns3.video-shares.org
Embedded IP addresses
- 20.165.94.46
- 20.52.64.201
- 52.123.252.238
- 52.123.252.227
- 57.155.104.224
- 4.230.171.124
- 20.247.184.142
- 52.123.252.231
- 135.233.95.80
- 135.232.92.137
- 74.179.77.164
- 52.182.143.212
- 203.26.79.13
- 20.184.175.19
- 20.76.201.171
- 52.123.129.14
- 172.178.240.161
- 52.148.114.188
- 172.178.240.162
- 20.42.179.204
- 52.110.12.31
- 52.110.12.51
- 72.153.5.96
- 52.110.12.44
File paths
- C:\W
Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report