MALICIOUS — caf70afc2af8b68d776a3790f6f7e8acc044b0d49ebde8ff66f5826a5ba068cd
MALICIOUS — caf70afc2af8b68d776a3790f6f7e8acc044b0d49ebde8ff66f5826a5ba068cd is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Juko family. 4 of 55 detection engines flagged it, exhibiting 7 ATT&CK techniques.
Identification
- SHA-256:
caf70afc2af8b68d776a3790f6f7e8acc044b0d49ebde8ff66f5826a5ba068cd - SHA-1:
17393b1349b8140f56e50c8aca0473fed0735a06 - MD5:
87645a9d6f2c79c6d43f89a4791b3ea7 - imphash:
170193414cc4abf0ae27dc2a19d74879 - ssdeep:
768:qZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqKNPWQHpm:OLsF2Kerc64sTiX2IV0Dhum - TLSH:
T1992F396747309602F391A68B55403F4DB1B6A8EE3136C7518EE2B67E8BE045738B847C - Submitted as: caf70afc2af8b68d776a3790f6f7e8acc044b0d49ebde8ff66f5826a5ba068cd
- File type: pe · Size: 32784 bytes
- Verdict: malicious (99/100) · Family: Juko
Detections (4 of 55 engines)
- ClamAV (daily): Win.Malware.Juko-9753236-0
- Microsoft Defender: Trojan:Win32/SelfDel!pz
- Emsisoft (Emergency Kit): Trojan.Downloader.JUKO
- Kaspersky (KVRT): HEUR:Trojan.Win32.SelfDel.gen
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 10 weighted signals:
- ClamAV (daily) flagged Win.Malware.Juko-9753236-0 (rule
Win.Malware.Juko-9753236-0) - engine signal, weight 0.90, confidence 0.95 - 3 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 29 external host(s) at runtime (34 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001, T1497, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- communicate over HTTP (rule
communicate over HTTP) - capa signal, weight 0.30, confidence 0.60 - enumerate processes (rule
enumerate processes) - capa signal, weight 0.20, confidence 0.60 - Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
13972 behavior events · 3 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
- i.assmio.com
- 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
Dropped files
- C:\Users\analyst\AppData\Roaming\Mozilla\WINWORD.exe -
33d1dd997fb8b7bf7ca67110a789f586217619e89d5e62b770e53caba0c66a5b
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/fa5c4269-9d03-4a47-8d97-be6931f0b22c/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/fa5c4269-9d03-4a47-8d97-be6931f0b22c?P1=1787917858&P2=404&P3=2&P4=YeCCT169c%2bPxgo4p%2fD9hQ1e3nLnHnHBLnK2adK33pPKK94j%2bua%2fxCby0hBfkyf6UFgES4xif2a3d7ZPnAVyXnQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/51d86688-616b-47e3-abeb-3df16a1583c5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/51d86688-616b-47e3-abeb-3df16a1583c5?P1=1787917882&P2=404&P3=2&P4=NHr%2blW47UUHWYX9NqOr%2f59%2f4dunhTYtefnTXrYDvQue1QcpBmhH8arChWCSj9T6bSZQngshSGfjIakJutYAWBg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://i.assmio.com/6493E6AC8899E08D00001618E14AC580.aspx
- http://i.assmio.com/650B46AB8899E27E00001DA69C517E62.html
- http://i.assmio.com/656196A08899E46F00002518335BC73D.shtm
- http://i.assmio.com/24C996A08833C17B000026BAA157FB91.aspx
- http://i.assmio.com/251876AE8833C2FB00002C7CDA05DE09.524Q
- http://i.assmio.com/2529E6AC8833C36C00002E2957624AB7.shtm
Embedded domains
- i.assmio.com
Embedded IP addresses
- 52.123.252.215
- 20.42.73.31
- 52.123.252.197
- 4.230.171.124
- 4.144.132.223
- 85.210.196.11
- 20.165.94.46
- 74.178.76.128
- 135.232.92.97
- 40.79.141.155
- 203.26.79.13
- 52.123.128.14
- 20.236.44.162
- 52.123.129.14
- 20.89.1.13
- 52.123.252.238
- 172.178.240.162
- 162.159.142.9
- 52.110.12.48
- 52.110.12.56
- 172.215.188.232
- 48.211.4.16
- 52.148.114.188
- 172.233.212.224
- 135.234.160.244
More Juko samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report