SUSPICIOUS — mutated_4117.exe
SUSPICIOUS — mutated_4117.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:
2a50df3d8c76607645fc410a40b94ccf6636f686d74e56b7926ad3a2c5820911 - SHA-1:
0cb1d1509d73802d35aaaf03bfc56402ade09398 - MD5:
bfa56dd9203aaa756c63ed68b2cbebfe - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:n7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uk:n7GpZ31foMqtB+QBPDEP - TLSH:
T13B6A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_4117.exe
- File type: pe · Size: 9807974 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 21 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
- Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
35 behavior events · 0 ATT&CK techniques · 1 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\mutated_663.exe -
56e5ac78000d970787298e39ad94b4fbd844dbe0bc236d1bdd2cb4353e73a62a
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=1787706081&P2=404&P3=2&P4=YH%2fuzS1izllhsr1yQvcEyZBdC4%2b8vP%2bJw0psA2YLg06BBYQj6Q9V3rwb0jPgc9gWAVVP2K25tQwhckHAkEmmNg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 13.89.179.15
- 52.110.12.54
- 52.110.12.51
- 4.230.171.124
- 4.144.132.114
- 48.211.4.16
- 135.232.92.137
- 74.179.77.164
- 20.184.175.18
- 40.84.85.40
- 51.105.71.137
- 20.231.239.246
- 52.123.128.14
- 52.123.129.14
- 135.233.95.144
- 203.26.79.13
- 172.178.240.161
- 74.178.76.44
- 52.148.114.188
- 52.110.12.50
- 72.145.35.107
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