MALICIOUS — 8a3439afdfda0d24972d4119cae6a84af111aaf50ac8d6fbcbd44bc289f54bf9
MALICIOUS — 8a3439afdfda0d24972d4119cae6a84af111aaf50ac8d6fbcbd44bc289f54bf9 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Mydoom family. 7 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
8a3439afdfda0d24972d4119cae6a84af111aaf50ac8d6fbcbd44bc289f54bf9 - SHA-1:
ad8a45d7d9edd9c70063e411e3e902d9b14157b1 - MD5:
93c035cbdda68602303c38ff788b63fb - imphash:
ad769e8f02beff51887dc7ca90f5ea4e - ssdeep:
1536:SNqaLV8a6iK/emubDob3tcFfK/emubDob3tcFP:SNqMxK/edbqcZK/edbqct - TLSH:
T13036E1A702CBFE66CE17D54623D9954DD25340AC292E3596204FA22FCCF3DDB86B0920 - Submitted as: 8a3439afdfda0d24972d4119cae6a84af111aaf50ac8d6fbcbd44bc289f54bf9
- File type: pe · Size: 66140 bytes
- Verdict: malicious (99/100) · Family: Mydoom
Detections (7 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- ClamAV (daily): Win.Worm.Mydoom-5
- Detect It Easy (packer/type): DIE:UPX
- Microsoft Defender: Worm:Win32/Mydoom!pz
- Emsisoft (Emergency Kit): Win32.Worm.MyDoom.NF
- Trellix Stinger (McAfee): W32/Mydoom.c.n@MM
- Kaspersky (KVRT): Email-Worm.Win32.Mydoom.l
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 8 weighted signals:
- ClamAV (daily) flagged Win.Worm.Mydoom-5 (rule
Win.Worm.Mydoom-5) - 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 - Contacted 31 external host(s) at runtime (26 HTTP) - network signal, weight 0.40, confidence 0.80
- Detect It Easy (packer/type) flagged DIE:UPX (rule
DIE:UPX) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: UPX, high-entropy-sections:UPX1 - static signal, weight 0.25, confidence 0.55
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
917 behavior events · 2 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
- yahoo.co.id
- mx-apac.mail.gm0.yahoodns.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
Dropped files
- C:\Users\analyst\AppData\Local\Temp\p8dE.txt -
99310f657938eecc855885ebfdbfe43f570db11199bb0d66da8c22974aeb2c03
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=1787934692&P2=404&P3=2&P4=NRHNzCvmrhv97dFcKE5UyzA9ksJjWh0Hroyb9bqh0yp9vGLtDK8EBB5ctcZd%2bm1xcQxyZJxmTWqNwx8zQsxJAA%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=1787934711&P2=404&P3=2&P4=SKoeQt5F92Ep%2f21HxXXPQQoPkLnatXXPfJB8xNPUWoMI5iuS7r0haYatJoFu2jbSaxbF7196Ay8ZHMxv3DQZpw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/9c0462dd-f6cd-4ff7-a7ac-708d0e9dadc5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/b56480f9-8215-4de7-ba7e-8e690088d21d/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/9c0462dd-f6cd-4ff7-a7ac-708d0e9dadc5?P1=1787331356&P2=404&P3=2&P4=bSQtywui8G1RiBkRyZR%2fbnnW1SlkuEwgYb3WWW3iQIUr1C6udtg8Im4UMhMy3%2fG8ZC5wkJywaOs4IDfkjXnrhA%3d%3d&cacheHostOrigin=1D.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/b56480f9-8215-4de7-ba7e-8e690088d21d?P1=1787330962&P2=404&P3=2&P4=Xum2h4ntVnmLnwbGeTmg5UU4TX02IF3gJBTRwImpyIMLwWuAjhvVxuYqSASqjlbOjP4s3vOela5LK2DFoZEBew%3d%3d&cacheHostOrigin=1D.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- yahoo.co.id
- mx-apac.mail.gm0.yahoodns.net
Embedded IP addresses
- 40.79.167.10
- 4.230.171.124
- 40.84.97.4
- 20.247.184.142
- 74.179.77.204
- 135.232.92.97
- 20.42.73.24
- 52.123.129.14
- 20.231.239.246
- 40.103.64.242
- 40.99.134.2
- 20.42.65.94
- 135.234.160.245
- 16.112.77.66
- 40.79.150.120
- 92.223.78.30
- 74.179.71.159
- 203.26.79.13
- 52.148.114.188
- 217.42.61.68
- 57.154.63.210
- 15.80.145.54
- 106.10.248.74
- 4.209.250.170
- 166.77.228.112
File paths
- c:\sDec
More Mydoom samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report