MALICIOUS — 851ac370e2de25fe0199a82f134c916b0291d96283bdd5d956cefd21df427159
MALICIOUS — 851ac370e2de25fe0199a82f134c916b0291d96283bdd5d956cefd21df427159 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:
851ac370e2de25fe0199a82f134c916b0291d96283bdd5d956cefd21df427159 - SHA-1:
ab659773a2138abe2ff2c992dcbec3ccebff21ce - MD5:
7e9ecec266977cba7231962a91457512 - imphash:
c9b6c3da312e87a7377bab0dcbaf2d4a - ssdeep:
49152:lrq0R07QQm2blpZ59LRlNwtIcnx7V5cd:hq0+7VbxvtPwt35k - TLSH:
T1B05733283541214BE613BB0D598BA5EE6C0098C7F06F1F1C3EBCB696C08A45BED2D5B5 - Submitted as: 851ac370e2de25fe0199a82f134c916b0291d96283bdd5d956cefd21df427159
- 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 (16 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)
162 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
- settings-win.data.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\EB2B.tmp -
1496785fc1818fa5ccd3825fd047d992dbd8ca579dd399ac7b04f0bca0f1185d - 1176c9cd16e957094061d805b27f6e3120dbbf8b668f024dc54466cb9c1cefb8 -
1176c9cd16e957094061d805b27f6e3120dbbf8b668f024dc54466cb9c1cefb8 - f219b8a8e64936f8ac434f886305741a0d311acffb0fbe2f674ec1f473a0c947 -
f219b8a8e64936f8ac434f886305741a0d311acffb0fbe2f674ec1f473a0c947 - cf2d00b69cb1edc3fe20ce22bff0b09aaf25fa35f14c85ccffca11da0cb692a5 -
cf2d00b69cb1edc3fe20ce22bff0b09aaf25fa35f14c85ccffca11da0cb692a5 - 4573ce764a936d5477e5efabaeb3008f0b6e00b0b5f0c5f391235049b2e82c3b -
4573ce764a936d5477e5efabaeb3008f0b6e00b0b5f0c5f391235049b2e82c3b
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/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=1787842880&P2=404&P3=2&P4=UI7zw5nctOMkfAZrDWk3hN4YdRWhaX0MWAimnitAaoM7yQdNE9bUygTUv7PMn6FGSvlDpt%2fs5mV9vLDzKkN0AQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- tw.au
- l.ua
- schemas.microsoft.com
Embedded IP addresses
- 4.150.223.108
- 57.154.63.210
- 4.230.171.124
- 4.144.132.114
- 74.179.77.204
- 135.233.95.135
- 4.150.223.110
- 20.231.239.246
- 40.103.64.242
- 52.123.129.14
- 52.123.128.14
- 20.184.175.17
- 135.233.45.222
- 52.123.252.225
- 203.26.79.13
- 72.154.7.100
- 135.233.95.80
- 52.148.114.188
- 52.110.12.45
- 52.110.12.30
More Zusy samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report