MALICIOUS — mutated_27542.exe
MALICIOUS — mutated_27542.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (74/100), attributed to the Zusy family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
38c3511634727a13be85845a49fe25d9181f752b362244926c3604a2208edb0d - SHA-1:
99d259d5745b62842acdf118948a23ef0ebe7a83 - MD5:
1609b30b3a2603e1d4e06771823b0a7c - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:u7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uk:u7GpZ31foMqtB+QBPDEP - TLSH:
T1A46A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_27542.exe
- File type: pe · Size: 9807974 bytes
- Verdict: malicious (74/100) · Family: Zusy
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 malicious score of 74/100 is the fusion of 4 weighted signals:
- Dropped a suspicious payload (AntiDebug): mutated_24634.exe - dynamic signal, weight 0.40, confidence 0.90
- Contacted 22 external host(s) at runtime (16 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
Dynamic analysis (windows)
147 behavior events · 0 ATT&CK techniques · 4 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
- settings-win.data.microsoft.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\mutated_24634.exe -
7bfb388f4ee48d157a53c6802dae1091fe42625430e0233aba330e12dabf8c9e - C:\Users\analyst\AppData\Local\Temp\mutated_11480.exe -
681b84da93420d5c81b27d45c5c08e24497482a05b45bfa82661dad53d3410fd - C:\Users\analyst\AppData\Local\Temp\mutated_12690.exe -
760d9ab684409ab240592ebc7e182fe184e556b4b7dea7ef47f2d7e9e0be8673 - C:\Users\analyst\AppData\Local\Temp\mutated_8928.exe -
197ec0a21a55f3908e55e47cf7fee00f683603f372adfd71243df8f344438734
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=1787643803&P2=404&P3=2&P4=POyJM%2fD%2f5j%2f6lmg%2fV9%2bnWS8M5qT4EI%2fVNU6hcggnIWyb9epGt%2fsjT%2b0q%2fB4MZJiePiuvcYv7WdVMRbt2El8zAA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 203.26.79.13
- 92.223.78.30
- 172.215.188.232
- 52.123.252.213
- 20.42.73.28
- 4.230.171.124
- 4.247.188.233
- 52.253.84.76
- 74.179.77.204
- 74.179.77.164
- 4.150.223.112
- 4.150.223.97
- 20.231.239.246
- 52.123.129.14
- 40.99.134.18
- 52.123.128.14
- 135.234.160.244
- 52.148.114.188
- 72.145.35.100
- 52.110.12.46
- 52.110.12.47
- 74.178.232.29
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