MALICIOUS — 8c3435c87304c6189dc8fd839867edb9cca804fbe07ae9db2b92563ee9c498ca
MALICIOUS — 8c3435c87304c6189dc8fd839867edb9cca804fbe07ae9db2b92563ee9c498ca is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Crypted family. 5 of 55 detection engines flagged it, exhibiting 7 ATT&CK techniques.
Identification
- SHA-256:
8c3435c87304c6189dc8fd839867edb9cca804fbe07ae9db2b92563ee9c498ca - SHA-1:
d345c5780df35a3dd033584bbebc5b3048330b4f - MD5:
2994e1b006dd3ce3d097f309513e61a0 - imphash:
9c0050334da711b5147027326c52827d - ssdeep:
768:w+XrhbQX7eM3Dth3aC5Y4ybQs3NJZXfppHvL/hj1OnrEw:wGrhbcq4B1y44NJZXfDT/hBOow - TLSH:
T1AC2FC00894710F1BD2859B05B728A84CB6710E148DB6EFB8B0264F7A6B1C1B77D9638D - Submitted as: 8c3435c87304c6189dc8fd839867edb9cca804fbe07ae9db2b92563ee9c498ca
- File type: pe · Size: 32768 bytes
- Verdict: malicious (98/100) · Family: Crypted
Detections (5 of 55 engines)
- ClamAV (daily): Win.Trojan.Crypted-29
- Microsoft Defender: flagged
- Emsisoft (Emergency Kit): Gen:Trojan.Backdoor2.cuW@aW@bqTb
- Trellix Stinger (McAfee): W32/Mimail.q@MM
- Kaspersky (KVRT): Email-Worm.Win32.Mimail.q
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 7 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Crypted-29 (rule
Win.Trojan.Crypted-29) - engine signal, weight 0.90, confidence 0.95 - 5 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 - Contacted 28 external host(s) at runtime (18 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1082 - dynamic signal, weight 0.40, confidence 0.75
- Dropped 2 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)
29765 behavior events · 2 ATT&CK techniques · 3 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
- licensing.mp.microsoft.com
- windows.msn.com
- oneocsp.microsoft.com
- settings-win.data.microsoft.com
Dropped files
- C:\Windows\outlook.cfg -
5a1b4d24002a78d48494b049c9af0166e5d5be38dcf697ba9779bf3f61acbff8 - C:\Windows\outlook.exe -
96b9c4ead67d03eb2c69103a983274e013e3466e80d8f95bd7cf3aea8be05b28 - C:\Windows\sys32.exe -
d2a618b6f2221868a496a3b058607b716ef822c5e368bb4ca2b888dc2600dcc0
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=1787879795&P2=404&P3=2&P4=cMuwzsUaByLcwM5mMfJmcW7shYeJ0ecJdOFWzPjtzpw%2bwAT%2fwmza0hR4Be3lEnj8Dd5b6fD%2f5Zxl6n48VgyMIw%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=1787879865&P2=404&P3=2&P4=IOFtAeFGK%2ftKcXsc%2ftZUt62xNMs2%2bs2xaLNUj7aDkK2Y9QJP7LMctSb%2bTtjqTNVxIcr3UX34B9%2bIVWY3PxVy7A%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 20.42.73.28
- 52.123.252.233
- 52.253.84.76
- 40.84.85.40
- 4.230.171.124
- 74.178.240.61
- 135.233.95.135
- 20.184.175.15
- 135.232.92.137
- 20.231.239.246
- 40.99.133.242
- 40.99.134.18
- 52.123.128.14
- 52.123.129.14
- 172.178.240.161
- 212.5.86.163
- 52.123.252.218
- 52.123.252.230
- 135.232.92.34
- 203.26.79.13
- 52.123.252.246
- 52.148.114.188
- 135.233.45.223
- 52.123.252.242
- 135.234.160.244
More Crypted samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report