MALICIOUS — api-ms-win-crt-runtime-l1-1-0.dll
MALICIOUS — api-ms-win-crt-runtime-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:
71e0f0cf3e1f283096ff27e7510b0f65f2a35e94acf0b828f37e30d661033dd0 - SHA-1:
f9a8265124d60e1a73d3c4bfa84eb49114852a8a - MD5:
1fdaeb6e1d426a78bda3d70f43de3598 - imphash:
38aa7c2ff6ef0e48a9520d6702d08df4 - ssdeep:
6144:TeEriRsAxH/K2jye9POln4RUOeinwl5gaO5W2cRFAx5G3Tus:igixH/dpPOV4uOeinggFQF+5/s - TLSH:
T1264BAFB1011A1135D9FABDB0A01CCE7CD0637845707C6F9E904BEB6D9098AE3E8FA591 - Submitted as: api-ms-win-crt-runtime-l1-1-0.dll
- File type: pe · Size: 487974 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 (21 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 83 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)
25564 behavior events · 0 ATT&CK techniques · 97 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
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- officeclient.microsoft.com
Dropped files
- 455f8dfbc1bb77960b52ac345d9a7304e05b1d4d7886b7d84928a7e713e6deef -
455f8dfbc1bb77960b52ac345d9a7304e05b1d4d7886b7d84928a7e713e6deef - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\j2pkcs11.dll -
1d62466c8a3339ce9da8bae63b64b07b57fb93efbeab888e043a44d45dbc4f72 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-utility-l1-1-0.dll -
6d93019951d28e9eb97fc3b7799bfbe66a70cfef888a7b9b9bc5cd69ef39511c - C:\$WinREAgent\RollbackInfo.ini -
f1c337743f715527d8a1a23bc39ac8b7ebdba2f224d12828d74eb3270ec64f65 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-processenvironment-l1-1-0.dll -
b154cea94e83fba9256912e935e1585ef0d73d661b36c7d951d06f8b46c0225b - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-environment-l1-1-0.dll -
c2ef05c653340774040ed6e6a74353c52f065d2cf5717a88e66ef3bf143cebb3 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-synch-l1-1-0.dll -
2e67f000ad66e718b3287defc8157e6308fa7a60c1e43d21037ffcb58681ce4f - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\javaw.exe -
b276a11dee18e0a13656070995d1476db5ebea6431bf778d446a1c81e3090dfb - C:\$WinREAgent\Backup\ReAgent.xml -
ea95754fe60e1393d199b80bd58c33cdadaf0f896a3d21eb0fae8ad4507cf226 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-file-l1-2-0.dll -
a5bd257398fb3cfb9f09cb56eebf2cf4b27033cfd5f1505b43203823b241682c - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\lcms.dll -
8cfdf6de98850afc50c5e4e62b4932ddcaa0a57e79bccceae79707fbea5f0142 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-multibyte-l1-1-0.dll -
e68f0b0be5ef51cf7d0d469056cc1a4a0dbdb74b9053bb823349d094c1ddfcba - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-timezone-l1-1-0.dll -
658cb6657dc1318ca0726765aa95b3096bf797475669611602689f49fcbc38bb - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-runtime-l1-1-0.dll -
6f8fe059129c45e169b800c8a5769471af04021ea40ed4be022864b8965210ca - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jaccessinspector.exe -
78201b4b490cd3797782802bdc4e986505afa51c660bed44c9fa78a8d0df2951
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=1787726840&P2=404&P3=2&P4=VGusL9Kktun7YSMj3T9BRC%2fniYXu3ouSMJgR8Osn%2bkB29shv7abDuSbT4IYmc4YU4ZNIIfyWnjdflpL4dMGTRw%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
- 135.233.95.80
- 20.42.65.94
- 52.123.252.219
- 4.247.188.224
- 4.230.171.124
- 52.253.84.76
- 74.178.240.61
- 20.50.201.203
- 74.178.240.51
- 4.150.223.110
- 52.123.129.14
- 20.112.250.133
- 135.233.45.221
- 52.123.252.234
- 135.232.92.34
- 52.148.114.188
- 135.233.45.222
- 20.42.73.24
- 51.11.192.48
- 40.84.97.4
- 52.110.12.15
- 52.110.12.31
- 72.153.5.128
- 52.110.12.50
More Container samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report