MALICIOUS — 841efb3c39a2d49902f749d76e9227ac971216a55fb3a51b48450130315fce7a
MALICIOUS — 841efb3c39a2d49902f749d76e9227ac971216a55fb3a51b48450130315fce7a is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (96/100), attributed to the Zusy family. 5 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
841efb3c39a2d49902f749d76e9227ac971216a55fb3a51b48450130315fce7a - SHA-1:
ca42e25507f4a2d81c383ed1ffac451bd6a64e25 - MD5:
a5ec9bd286eb52db237ec80356e6b087 - imphash:
858aee865f44703f181e0ac78825594b - ssdeep:
24576:KY4G2qLMJalsnqShyoo77lUabuSvbDQOOdIxJsG99:D3XZynV4oDabuWbDQOcIxJJ99 - TLSH:
T17451230B32524BEBE768A73E0E5F6D6E6C1EC6391851A5CD6A27FA433DC20430213674 - Submitted as: 841efb3c39a2d49902f749d76e9227ac971216a55fb3a51b48450130315fce7a
- File type: pe · Size: 835593 bytes
- Verdict: malicious (96/100) · Family: Zusy
Detections (5 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:vRFeU
- ClamAV (daily): Win.Malware.Fragtor-9909039-0
- Microsoft Defender: Trojan:Win32/Zusy.EM!MTB
- Emsisoft (Emergency Kit): Gen:Variant.Zusy.465014
- Kaspersky (KVRT): HEUR:Packed.Win32.Vemply.gen
MITRE ATT&CK
Why this verdict
The malicious score of 96/100 is the fusion of 4 weighted signals:
- ClamAV (daily) flagged Win.Malware.Fragtor-9909039-0 (rule
Win.Malware.Fragtor-9909039-0) - engine signal, weight 0.90, confidence 0.95 - Dropped a malicious payload (Fragtor): 1B0F0D0B120A156D155F15A0F0E160B0C160F.exe - dynamic signal, weight 0.62, confidence 0.90
- Contacted 20 external host(s) at runtime (16 HTTP) - network signal, weight 0.40, confidence 0.80
- Packing/obfuscation: high-entropy-sections:vRFeU - static signal, weight 0.25, confidence 0.55
Dynamic analysis (windows)
143 behavior events · 0 ATT&CK techniques · 2 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
- settings-win.data.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\1B0F0D0B120A156D155F15A0F0E160B0C160F.exe -
c7b9bde5898fa35d5f96f88e58887e3c6152386459717d6e96b0d6eb3c77626f - ea45811db639ccf3dcdf7c6c18ace1e7b3f860b24287f9b3f458eb6c115f24dc -
ea45811db639ccf3dcdf7c6c18ace1e7b3f860b24287f9b3f458eb6c115f24dc
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=1787642240&P2=404&P3=2&P4=nuPTk1w9L4PVnuPrIa1ATE7RH7ydINfBioK4IULfIG7VpmWjIKDulvJrtCqD8rvtZPKw%2bLsIRzsYhFGsivva1w%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 40.79.163.154
- 57.154.63.210
- 4.230.171.124
- 20.247.184.197
- 52.123.252.233
- 135.232.92.137
- 51.116.246.105
- 74.178.76.54
- 40.99.133.210
- 20.236.44.162
- 52.123.128.14
- 52.123.129.14
- 4.150.223.101
- 203.26.79.13
- 135.234.160.244
- 52.148.114.188
- 72.145.35.101
- 20.165.94.46
- 52.110.12.3
- 52.110.12.19
File paths
- t:\c
More Zusy samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report