MALICIOUS — api-ms-win-crt-environment-l1-1-0.dll
MALICIOUS — api-ms-win-crt-environment-l1-1-0.dll is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Container family. 9 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
1342bdfd251ab4512d37f2d241c2df8ad191f971babe4f755e0d10f1d8f411f2 - SHA-1:
c0cd90658d39d534656dd20c6aefc330f67841f6 - MD5:
3b2fda9474d8296f59f8894b6eb26a03 - imphash:
38aa7c2ff6ef0e48a9520d6702d08df4 - ssdeep:
6144:TeEriRsAxH/K2jye9POln4RUOeinwl5gaO5W2cRFAx5G3T:igixH/dpPOV4uOeinggFQF+5 - TLSH:
T19D4BAFB1021A1135D9FABEB0A01CCE7CD063784570786FAE904BDB5D9098AE3D8FE591 - Submitted as: api-ms-win-crt-environment-l1-1-0.dll
- File type: pe · Size: 483758 bytes
- Verdict: malicious (98/100) · Family: Container
Detections (9 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- ClamAV (daily): Win.Trojan.Agent-6943819-1
- YARA: delivr.to detections: DLV_ISO_IMG_Container_Lure
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Detect It Easy (packer/type): DIE:UPX
- Microsoft Defender: Virus:Win32/Sivis.A
- Emsisoft (Emergency Kit): Win32.Sivis.A
- Trellix Stinger (McAfee): PolyPatch-UPX
- Kaspersky (KVRT): Virus.Win32.Agent.es
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 10 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Agent-6943819-1 (rule
Win.Trojan.Agent-6943819-1) - engine signal, weight 0.90, confidence 0.95 - Contacted 26 external host(s) at runtime (24 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497 - dynamic signal, weight 0.40, confidence 0.75
- YARA: delivr.to detections flagged DLV_ISO_IMG_Container_Lure (rule
DLV_ISO_IMG_Container_Lure) - engine signal, weight 0.35, confidence 0.70 - YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - Detect It Easy (packer/type) flagged DIE:UPX (rule
DIE:UPX) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: http://creativecommons.org/publicdomain/zero/1.0/, https://d.symcb.com/rpa0, http://s.symcb.com/universal-root.crl0 - static signal, weight 0.35, confidence 0.60
- Packing/obfuscation: UPX - static signal, weight 0.25, confidence 0.55
- Dropped 81 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
25426 behavior events · 0 ATT&CK techniques · 95 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
- c.pki.goog
- 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:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-console-l1-2-0.dll -
4a5be7e2bac8b970ef84c59e64b637e84114d04abc7403e1fc0b81238b7f1247 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jaas.dll -
683de48ce74a7ba599834ea4222719f462e87a39ed62817283b461542dff39aa - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\freetype.dll -
7dd4fa2b1dc31ce3627f2862ff52acd39a9689db95e804fe82e5b5debaf70cf4 - a92d007b67c367991a03f02b2d6cf500fc590405a2caaa5d798b0e1f58288a5e -
a92d007b67c367991a03f02b2d6cf500fc590405a2caaa5d798b0e1f58288a5e - 5a1dd28ecdfd46e64f341d6a024483de9a5c791cd1c33ddfe5015a161dd3852c -
5a1dd28ecdfd46e64f341d6a024483de9a5c791cd1c33ddfe5015a161dd3852c - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-datetime-l1-1-0.dll -
462f266cc59021e830379838609e7f9462afb224dd170f55f501eb85bb59dfa5 - C:\$WinREAgent\Backup\boot.sdi -
e5d4a8533b090a39e4c46fec0cfae9a84e655ce6c189075c0fbe1a0e0d62b4e3 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-localization-l1-2-0.dll -
0f61d2b67b0db6ad53c0f0260b282b00d4e2a2512c988014edfece1d365387cd - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-util-l1-1-0.dll -
864a523ec903059883dc960f507cbc4ea0b290ecbd08cae172b6c95ac55016a8 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-convert-l1-1-0.dll -
2f7098f61b60736ef0093ad192557b0c979d92b93c450fa3bd29c59361f0e174 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-debug-l1-1-0.dll -
33dbd4eda7126fb99e3c7ffcc3661b2af2c3254ad37992ec2c8cdc801c1ad06b - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-filesystem-l1-1-0.dll -
e366fb47baa4c95ef8514977845233406ecce2228d54676dff57ec5dec20626f - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-processthreads-l1-1-0.dll -
cc96eb5d80a97c12cd89d24e46aeb7c305bd83725e37e8ae5a590708fda8caed - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-libraryloader-l1-1-0.dll -
e3271dec7fa6cc701a8d5f5cedc28bf160bac91c44b5c9fb19b8a9a73501bf1d - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\javaw.exe -
04d70d7519a6fdbbc5f8ab324ae29a2983329b47f5cf1320de48e992b04047f3
Embedded URLs
- http://creativecommons.org/publicdomain/zero/1.0/
- http://www.adobe.com/go/reader_system_reqs_it.UnmoveFilesRimozione
- http://www.adobe.com/go/reader_system_reqs_it
- https://www.digicert.com/CPS0
- http://cacerts.digicert.com/DigiCertEVCodeSigningCA-SHA2.crt0
- http://cacerts.digicert.com/DigiCertHighAssuranceEVRootCA.crt0
- http://crl3.digicert.com/DigiCertHighAssuranceEVRootCA.crl0@
- http://crl4.digicert.com/DigiCertHighAssuranceEVRootCA.crl0
- http://www.digicert.com/ssl-cps-repository.htm0
- https://d.symcb.com/rpa0
- http://s.symcb.com/universal-root.crl0
- https://d.symcb.com/rpa0@
- http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0
- http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0
- http://www.microsoft.com/pki/certs/MicCodSigPCA_2010-07-06.crt0
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
- http://www.microsoft.com/windows0
- http://www.digicert.com/CPS0
- http://www.eclipse.org/0
- 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/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787727219&P2=404&P3=2&P4=leu%2bTEsvgX8kL4dl9lEf%2baOYSIXPSzeSHkUGZdWngwmv0fm%2bgBfPy9S3D8L6Be3vAn2mUxpY2T9RXZD6ul1MAA%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
Embedded domains
- creativecommons.org
- geocities.com
- www.adobe.com
- helpx.adobe.com
- www.microsoft.com
- crl3.digicert.com
- crl4.digicert.com
- www.digicert.com
- cacerts.digicert.com
- d.symcb.com
- s.symcb.com
- ts-crl.ws.symantec.com
- ts-aia.ws.symantec.com
- crl.microsoft.com
- www.eclipse.org
Embedded IP addresses
- 203.26.79.13
- 51.105.71.137
- 52.110.12.32
- 52.110.12.30
- 4.230.171.124
- 4.144.132.114
- 85.210.193.152
- 74.178.76.128
- 48.211.4.16
- 20.42.72.131
- 135.232.92.97
- 52.123.128.14
- 20.236.44.162
- 52.123.129.14
- 135.232.92.34
- 74.178.232.29
- 135.233.45.223
- 4.247.188.224
- 4.150.223.101
- 52.148.114.188
- 135.233.45.222
- 92.223.78.30
- 72.154.7.113
- 142.250.195.131
- 52.110.12.26
More Container samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report