MALICIOUS — e8dc86c2a1efcf1afd4366218841781a029fa97d9bbf4f45ff862cb55d67b38f
MALICIOUS — e8dc86c2a1efcf1afd4366218841781a029fa97d9bbf4f45ff862cb55d67b38f is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Zusy family. 6 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
e8dc86c2a1efcf1afd4366218841781a029fa97d9bbf4f45ff862cb55d67b38f - SHA-1:
24f9656be901aa1f175d8adbfa780995758dc7ee - MD5:
0ef71cb1bed5a8ed3f0dbc7b909e91ed - imphash:
c9b6c3da312e87a7377bab0dcbaf2d4a - ssdeep:
49152:lrq0R07QQmkbQsTvWBng0e7nhUbjX2Gc:hq0+7BbQiXDn63Y - TLSH:
T1A757334831D421D2E62B111C8F17E6AED4C46FE991875EBE67EEB2C1C09687F2D86180 - Submitted as: e8dc86c2a1efcf1afd4366218841781a029fa97d9bbf4f45ff862cb55d67b38f
- File type: pe · Size: 1604260 bytes
- Verdict: malicious (98/100) · Family: Zusy
Detections (6 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:
- ClamAV (daily): Win.Packed.Zusy-9645559-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Detect It Easy (packer/type): DIE:Microsoft Linker
- Microsoft Defender: Trojan:Win32/Salgorea.VRR!MTB
- Kaspersky (KVRT): Backdoor.Win32.Salgorea.ck
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Packed.Zusy-9645559-0 (rule
Win.Packed.Zusy-9645559-0) - engine signal, weight 0.90, confidence 0.95 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - 1 behavioral detection(s): Windows Service Installation [medium] (rule
tl-service-install) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 20 external host(s) at runtime (18 HTTP) - network 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 - Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule
DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: high-entropy-sections:, Microsoft Linker - static signal, weight 0.25, confidence 0.55
Dynamic analysis (windows)
163 behavior events · 1 ATT&CK techniques · 5 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
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- officeclient.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\25A3.tmp -
fbf0a8550b9c8a2891d174687a4b1f8a5390eaaa03378f7b93bfd8e9dec646bc - e1b737e620e2623aa84354fec3cd9999d86279c4f3d16980998babe50a3cf3af -
e1b737e620e2623aa84354fec3cd9999d86279c4f3d16980998babe50a3cf3af - cf2d00b69cb1edc3fe20ce22bff0b09aaf25fa35f14c85ccffca11da0cb692a5 -
cf2d00b69cb1edc3fe20ce22bff0b09aaf25fa35f14c85ccffca11da0cb692a5 - 4573ce764a936d5477e5efabaeb3008f0b6e00b0b5f0c5f391235049b2e82c3b -
4573ce764a936d5477e5efabaeb3008f0b6e00b0b5f0c5f391235049b2e82c3b - e54b5c5cc967d2f3cf8e54a63173ebdbfb40dc0d2ef019aaf27e120d758fbd5f -
e54b5c5cc967d2f3cf8e54a63173ebdbfb40dc0d2ef019aaf27e120d758fbd5f
Embedded URLs
- http://schemas.microsoft.com/SMI/2005/WindowsSettings
- 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/9a8a705c-852d-4d18-b32a-ee1d872f4bd9/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/9a8a705c-852d-4d18-b32a-ee1d872f4bd9?P1=1787943666&P2=404&P3=2&P4=LKO7EZndy%2bM9CnH9UChmmP89QlrjAIIcFXVRdEJuSyQ%2bAZkavFPJhG6ftCcWcDtToeKJpr5ReoCpUaYM%2blqH8w%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/51d86688-616b-47e3-abeb-3df16a1583c5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/51d86688-616b-47e3-abeb-3df16a1583c5?P1=1787943695&P2=404&P3=2&P4=DE5fD3PO879gmm%2b8e4PwYA2%2byc1atZgE0%2bVQ2RcgdwNt%2bSeL0DmE0FoevDyE4Duawxs7EUXTTucggzSbk10p5g%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- schemas.microsoft.com
Embedded IP addresses
- 40.79.163.155
- 52.123.252.248
- 52.123.252.244
- 40.84.97.4
- 4.230.171.124
- 4.144.132.223
- 74.179.77.204
- 74.178.76.54
- 4.150.223.110
- 20.231.239.246
- 52.123.129.14
- 52.123.128.14
- 20.184.175.20
- 20.165.94.46
- 203.26.79.13
- 135.234.160.246
- 52.148.114.188
- 72.145.35.111
- 52.110.12.22
- 52.110.12.33
More Zusy samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report