MALICIOUS — 943d5f491bbc9fb9357be15884e36e84298342c8d8db81b9360e89e95ea0a983
MALICIOUS — 943d5f491bbc9fb9357be15884e36e84298342c8d8db81b9360e89e95ea0a983 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Vobfus family. 4 of 55 detection engines flagged it, exhibiting 5 ATT&CK techniques.
Identification
- SHA-256:
943d5f491bbc9fb9357be15884e36e84298342c8d8db81b9360e89e95ea0a983 - SHA-1:
c0be81abf1222e81feb4f0206d28abea43f64064 - MD5:
722a9c4f705a9306a4ee62d0f4ebf3e0 - imphash:
7cb28e403eb5845395a6e833a4cff526 - ssdeep:
768:QEgdqm+yELgctqxp/k/J/MkH5DAGo6DrdGsyZO:QMX5tep/klMBh6iZO - TLSH:
T1813951D76541D4C6E2F8E0EF0CAC1FDE208D8B405B3740191E6E931E5AC5573A632AAD - Submitted as: 943d5f491bbc9fb9357be15884e36e84298342c8d8db81b9360e89e95ea0a983
- File type: pe · Size: 86016 bytes
- Verdict: malicious (99/100) · Family: Vobfus
Detections (4 of 55 engines)
- ClamAV (daily): Win.Worm.Vobfus-7460240-0
- Microsoft Defender: Worm:Win32/Vobfus.AC
- Emsisoft (Emergency Kit): Trojan.GenericKDZ.80216
- Kaspersky (KVRT): Worm.Win32.VBNA.b
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 10 weighted signals:
- ClamAV (daily) flagged Win.Worm.Vobfus-7460240-0 (rule
Win.Worm.Vobfus-7460240-0) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Memory forensics: 2 finding(s), e.g. SSDT hook (rule
windows.ssdt.SSDT) - memory signal, weight 0.50, confidence 0.85 - 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 (22 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- 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)
37179 behavior events · 3 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
- ns2.thepicturehut.net
- 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\misor.exe -
72b7823b7fefe387b537c1c6fab12c91a275a2bdd855b42d0dee5e4c27eb352e - ed08cfe427af7086d77a3c9fb7f08fee88ee09e2fe112c4bd224634cdb7c8fde -
ed08cfe427af7086d77a3c9fb7f08fee88ee09e2fe112c4bd224634cdb7c8fde - f63fc61793bbf36b2ce50c4be112b47c8aee4ce423d7e84122004a3df3bab58d -
f63fc61793bbf36b2ce50c4be112b47c8aee4ce423d7e84122004a3df3bab58d - b39f0cd06c6e131cf2018951fb98afcfa7652e450bafddcb316ea84ba54475a0 -
b39f0cd06c6e131cf2018951fb98afcfa7652e450bafddcb316ea84ba54475a0
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=1787887860&P2=404&P3=2&P4=k5qeHapm%2bY9STuKPec2rpfmzjrbPTO4ytAEqNWxjRkWo7eAapHraV5DG2QeR0D0P%2bzCmzm9tGYrwKeT21IU9eg%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=1787887910&P2=404&P3=2&P4=Fbik7Xnpq5exE4ZJwjZjpLSGQ4y24C4BUCveMXgcPoUguOfky3sN07J6s6g6L0WarmG3IrswTvg1N%2beTe8UD7g%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- ns2.thepicturehut.net
Embedded IP addresses
- 20.50.201.205
- 52.230.60.54
- 57.155.104.224
- 4.230.171.124
- 74.179.77.204
- 74.179.77.164
- 4.150.223.112
- 52.123.128.14
- 20.236.44.162
- 40.99.134.2
- 40.99.133.242
- 52.123.129.14
- 20.42.72.131
- 52.123.252.218
- 203.26.79.13
- 135.234.160.245
- 52.123.252.248
- 74.179.71.159
- 52.148.114.188
- 135.234.160.244
- 52.110.12.30
- 52.110.12.28
- 72.153.5.60
- 52.123.252.239
- 20.184.175.16
More Vobfus samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report