MALICIOUS — 543b086dadc7e0975855992d09235b7f73d10e747275f588ac6c2ed7df49467b
MALICIOUS — 543b086dadc7e0975855992d09235b7f73d10e747275f588ac6c2ed7df49467b is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the NabucurObfs family. 5 of 25 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
543b086dadc7e0975855992d09235b7f73d10e747275f588ac6c2ed7df49467b - SHA-1:
90b542dbeb98648c5635bba61456f8a20147746f - MD5:
a6ad0533f87e82354ac5f8cbd4e12260 - imphash:
d41d8cd98f00b204e9800998ecf8427e - ssdeep:
24576:0tqhS1a3tWJSwQrG5dbAvWJavvWDg85B84O7OYYZ:Dd3t3AzJaveD5xOmZ - TLSH:
T16758CDF1F24F90755DA75BA9BC450A2C2E9A0D81EE44A53C1B31D4D2727C1B408BACEB - Submitted as: 543b086dadc7e0975855992d09235b7f73d10e747275f588ac6c2ed7df49467b
- File type: pe · Size: 1764864 bytes
- Verdict: malicious (98/100) · Family: NabucurObfs
Detections (5 of 25 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:.text
- Microsoft Defender: Trojan:Win32/NabucurObfs
- Emsisoft (Emergency Kit): Win32.Virlock.Gen.5
- Trellix Stinger (McAfee): W32/VirRansom
- Kaspersky (KVRT): Virus.Win32.PolyRansom.a
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 9 weighted signals:
- Microsoft Defender flagged Trojan:Win32/NabucurObfs (rule
Trojan:Win32/NabucurObfs) - engine signal, weight 0.55, confidence 0.85 - Emsisoft (Emergency Kit) flagged Win32.Virlock.Gen.5 (rule
Win32.Virlock.Gen.5) - engine signal, weight 0.55, confidence 0.85 - Trellix Stinger (McAfee) flagged W32/VirRansom (rule
W32/VirRansom) - engine signal, weight 0.55, confidence 0.85 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - 1 behavioral detection(s): Windows Service Installation [medium] (rule
tl-service-install) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 39 external host(s) at runtime (16 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001 - dynamic signal, weight 0.40, confidence 0.75
- Packing/obfuscation: high-entropy-sections:.text - 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)
28211 behavior events · 2 ATT&CK techniques · 18 dropped files.
Runtime network
- www.msftconnecttest.com
- inference.location.live.net
- google.com
- ctldl.windowsupdate.com
- login.live.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- msedge.api.cdp.microsoft.com
- windows.msn.com
- www.msn.com
- officeclient.microsoft.com
- odc.officeapps.live.com
- settings-win.data.microsoft.com
- geo.prod.do.dsp.mp.microsoft.com
- licensing.mp.microsoft.com
- assets.msn.com
- kv801.prod.do.dsp.mp.microsoft.com
- cp801.prod.do.dsp.mp.microsoft.com
- msedge.b.tlu.dl.delivery.mp.microsoft.com
Dropped files
- /opt/CAPEv2/storage/analyses/8884/files/73fc408c91e19b37018390be7057ffe859508d5bac2fe609f86c49e96166edc5 -
73fc408c91e19b37018390be7057ffe859508d5bac2fe609f86c49e96166edc5 - /opt/CAPEv2/storage/analyses/8884/files/864832bb556030394b0e7ef98308ea00374e35e54c0b8b118d3f501b95d62581 -
864832bb556030394b0e7ef98308ea00374e35e54c0b8b118d3f501b95d62581 - /opt/CAPEv2/storage/analyses/8884/files/a75ba3ccb7274e50540940ff1754ab68a9a5cb17e483bc842299465a6defb978 -
a75ba3ccb7274e50540940ff1754ab68a9a5cb17e483bc842299465a6defb978 - /opt/CAPEv2/storage/analyses/8884/files/2cb920b8c46e0ff22863dd71ae0bc7e33c72fa35643ab5b2cc665ec2f099844e -
2cb920b8c46e0ff22863dd71ae0bc7e33c72fa35643ab5b2cc665ec2f099844e - /opt/CAPEv2/storage/analyses/8884/files/dffedb4bd7421e0d8b56380f0641136f61f2316d9943e4cdfe0962643abe355d -
dffedb4bd7421e0d8b56380f0641136f61f2316d9943e4cdfe0962643abe355d - /opt/CAPEv2/storage/analyses/8884/files/bcb253ea3735a0cf0a8c6ee06c14c884937c64ddeacedb17240e40d403577620 -
bcb253ea3735a0cf0a8c6ee06c14c884937c64ddeacedb17240e40d403577620 - /opt/CAPEv2/storage/analyses/8884/files/eee68aa0389bd40410b533aad2e390ca33104be99213e8fd4c38f5616bdbac8b -
eee68aa0389bd40410b533aad2e390ca33104be99213e8fd4c38f5616bdbac8b - /opt/CAPEv2/storage/analyses/8884/files/d3e8d47e8c1622ec10adef672ca7a8992748c4f0a4e75f877462e7e661069698 -
d3e8d47e8c1622ec10adef672ca7a8992748c4f0a4e75f877462e7e661069698 - /opt/CAPEv2/storage/analyses/8884/files/ed7913a5b4914f6343f312915bd957b6c72c09c3061985d38d2d8b6c4241af51 -
ed7913a5b4914f6343f312915bd957b6c72c09c3061985d38d2d8b6c4241af51 - /opt/CAPEv2/storage/analyses/8884/files/e411df8aa2587207c38f72a68e2aa5cc85f0d454d909580676257b1bb0cf21e2 -
e411df8aa2587207c38f72a68e2aa5cc85f0d454d909580676257b1bb0cf21e2 - /opt/CAPEv2/storage/analyses/8884/files/d83b04335c3139905392b182d52cf5b5cb78b168399cf1948e4a27a7a549c1cf -
d83b04335c3139905392b182d52cf5b5cb78b168399cf1948e4a27a7a549c1cf - /opt/CAPEv2/storage/analyses/8884/files/5c5b0de42d55486ed61dd3a6e96ab09f467bb38ae39fced97adc51ba07426c0e -
5c5b0de42d55486ed61dd3a6e96ab09f467bb38ae39fced97adc51ba07426c0e - /opt/CAPEv2/storage/analyses/8884/files/0f35ace5268db33940ed18e946a9c65be4e31ec0ae31faa6e60122859c5cb5ca -
0f35ace5268db33940ed18e946a9c65be4e31ec0ae31faa6e60122859c5cb5ca - /opt/CAPEv2/storage/analyses/8884/files/0aee798a2d0964a6bc7c222a9db5de5e4b1a5d65d1470e9f9a93a939c9bdceb2 -
0aee798a2d0964a6bc7c222a9db5de5e4b1a5d65d1470e9f9a93a939c9bdceb2 - /opt/CAPEv2/storage/analyses/8884/files/89601fcf8013035398b6de5c54ed2e62ae2516f4000d8585446cfdd3af10255c -
89601fcf8013035398b6de5c54ed2e62ae2516f4000d8585446cfdd3af10255c
Embedded URLs
- http://www.msftconnecttest.com/connecttest.txt
- http://203.26.79.13/filestreamingservice//files/736bdc20-582e-46c5-ba31-d31d3d97258e/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/736bdc20-582e-46c5-ba31-d31d3d97258e?P1=1786366556&P2=404&P3=2&P4=jOzm6p41qZhPiif8KIri4ZjmTLtJdHgdCE7HhFmYt12Ij1AZXUHZaTTquls10KAxwcMsIxeAf7OyQS0HyzV4Kw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://google.com/
- http://203.26.79.13/filestreamingservice//files/c48ae315-f580-4b6c-801e-58a0f885749d/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c48ae315-f580-4b6c-801e-58a0f885749d?P1=1786366602&P2=404&P3=2&P4=N7fScAlJSVM5QVC57fOcC8cXJA1qg4TOKqtjg9fCUSJfLLvvLrLdduIo7yN8ThS2PgxPFGsTVlBfwYcK%2bQ08rg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 203.26.79.13
- 20.89.1.9
- 57.155.104.224
- 4.230.171.124
- 20.247.184.197
- 135.232.92.34
- 135.232.92.137
- 74.179.77.164
- 4.150.223.96
- 135.233.45.221
- 92.223.78.30
- 200.87.164.69
- 20.184.175.9
- 135.234.160.244
- 200.119.204.12
- 190.186.45.170
- 72.145.35.116
- 52.110.12.8
- 52.110.12.21
- 52.148.114.188
- 142.250.195.110
- 142.250.195.174
- 142.251.222.238
- 40.84.97.4
- 52.110.12.42
More NabucurObfs samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report