SUSPICIOUS — mutated_3437.exe
SUSPICIOUS — mutated_3437.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (64/100), attributed to the AntiDebug family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
4526daadb356f00f822fc550607e73a0fd683d4361f426cd172158edf188f1ae - SHA-1:
fdfc4e250c6f50449411b844dea7ba764ec1ce3a - MD5:
07b72364fcf8cc2e12556e7574937f15 - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:I7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uS:I7GpZ31foMqtB+QBPDE1 - TLSH:
T1706A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_3437.exe
- File type: pe · Size: 9807978 bytes
- Verdict: suspicious (64/100) · Family: AntiDebug
Detections (3 of 55 engines)
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Trojan:Win32/Zusy.KK!MTB
- Kaspersky (KVRT): HEUR:Trojan.Win32.Agent.pef
MITRE ATT&CK
Why this verdict
The suspicious score of 64/100 is the fusion of 4 weighted signals:
- Contacted 28 external host(s) at runtime (18 HTTP) - network signal, weight 0.40, confidence 0.80
- YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: https://gcc.gnu.org/bugs/ - static signal, weight 0.35, confidence 0.60
- Dropped 2 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
91 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
- settings-win.data.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\mutated_18321.exe -
53e43e759508d3ae86c7df07d9d2d568f661d246b3de0a3b77b4f9eebbef1897 - C:\Users\analyst\AppData\Local\Temp\mutated_2302.exe -
1807d4c1ed1b08ae2cce904d436fed687f1dd740707afd445a091c4a1c848995
Embedded URLs
- https://gcc.gnu.org/bugs/
- 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=1787703959&P2=404&P3=2&P4=O1XErGHDHfxGehiQIUOQdICKE3ieUIC5YRuA8Th4tghFIfptAZ%2bbtCZSxw3x1mPvk5UdUcgM5FQsnCnm4WLHtQ%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=1787703975&P2=404&P3=2&P4=OvpzC1WyrG69LNltKUnRqd33VHy8YvNiqVrjprKGdePHr2qTb%2fTAF%2b2DG0Qhs5DbkAdKzLagjEoZvfNCjV7MgA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 203.26.79.13
- 104.46.162.229
- 135.233.95.80
- 92.223.78.30
- 52.123.252.241
- 57.155.104.224
- 4.230.171.124
- 4.144.132.114
- 48.211.4.16
- 20.165.94.63
- 20.184.175.13
- 135.233.95.135
- 52.123.252.231
- 4.150.223.105
- 20.76.201.171
- 52.123.128.14
- 52.123.129.14
- 40.99.133.226
- 74.178.232.29
- 52.123.252.242
- 135.233.45.221
- 52.110.12.53
- 52.110.12.16
- 135.234.160.244
- 52.110.12.47
File paths
- X:\:`:d:h:l:p:t:x:
- X:\:h:l:p:
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report