MALICIOUS — ef1c74ee797131db2d62f5dec3f3fab9b3762d09774ec5360a67de847a241cc8
MALICIOUS — ef1c74ee797131db2d62f5dec3f3fab9b3762d09774ec5360a67de847a241cc8 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Sivis family. 6 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
ef1c74ee797131db2d62f5dec3f3fab9b3762d09774ec5360a67de847a241cc8 - SHA-1:
d236d9e8cbb6318e26cb3cacb19068e77b563ca3 - MD5:
731121eba56a43cf11f99fe57314ed00 - imphash:
38aa7c2ff6ef0e48a9520d6702d08df4 - ssdeep:
1536:80nERoZWEq3GcOHEq3GcOFEq3GcOPFhNGpWJiUmEFMFnMC3hht:5nEOWEqiEqcEqyFhNGpWJipEFMFnDt - TLSH:
T1853A8E6D331DA55FCA779ABF05E4DE5C406168EA25E500F0C3C3C37A68B9C2B6826247 - Submitted as: ef1c74ee797131db2d62f5dec3f3fab9b3762d09774ec5360a67de847a241cc8
- File type: pe · Size: 97601 bytes
- Verdict: malicious (98/100) · Family: Sivis
Detections (6 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): UPX
- ClamAV (daily): Win.Trojan.Agent-6943819-1
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Microsoft Defender: Virus:Win32/Sivis.A
- Emsisoft (Emergency Kit): Win32.Sivis.A
- Kaspersky (KVRT): Virus.Win32.Agent.es
MITRE ATT&CK
Why this verdict
The malicious score of 98/100 is the fusion of 9 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Agent-6943819-1 (rule
Win.Trojan.Agent-6943819-1) - engine signal, weight 0.90, confidence 0.95 - Memory forensics: 2 finding(s), e.g. SSDT hook (rule
windows.ssdt.SSDT) - memory signal, weight 0.50, confidence 0.85 - Contacted 25 external host(s) at runtime (25 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497 - dynamic signal, weight 0.40, confidence 0.75
- YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: http://creativecommons.org/publicdomain/zero/1.0/, http://www.gnu.org/licenses/, https://d.symcb.com/rpa0 - 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)
25465 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
- 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:\$WinREAgent\Rollback.xml -
9471cbc2bdd2335ea954d625f26a036838fe0398f28c6747e6aecdbe0bdbfa23 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\kinit.exe -
cf570b9ff1c426606e8e3b213d3dd3af65422901409ca3728f67d78699ca0255 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-interlocked-l1-1-0.dll -
d8ad82bb462a5ab234623b59e8148bdb9f4e8d2cbc7388ad30415c6a9f12ffed - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-stdio-l1-1-0.dll -
8f6fecb7ab9e7251da4675176f534b9a9e3ce45fbac88368c285908ad8b1c53a - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-console-l1-2-0.dll -
98a8cd1bf9cf79d9831e57677c673a42e96b534e699962911cba3fd90cfea625 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\klist.exe -
425b04c87a7356dfc1735949b83c29b8c5ba4c283eaa1ee4abd6c93245f4ff70 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-sysinfo-l1-1-0.dll -
ea3215c0e48ae953afae28d5fe825b6e0a9d3c6cd24d74df95aaadd59977c749 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\freetype.dll -
96d846870696d604e0c209fff278ed197430dea18d51885204edd0607f24f589 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-crt-locale-l1-1-0.dll -
e282dcd98a006015fa162ce93dcb2da1616024d08891008db611aad07f63be3d - C:\$WinREAgent\Backup\boot.sdi -
6c460f18b9bcf35d3607307eebda7b308e1649af2e6f61a75b25b5d271c5f622 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\awt.dll -
01af3a1d7ed2a2317b6c813257e4102a72409117dda10305701ef1de1fe0bfa8 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\jfr.exe -
0e58ad43e272b183875464e9b98d904c68c719462063a5de3b37edb00c52d8da - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\management.dll -
171ee3ce0e372e9d4b62eab72d44b3bc7aa74cea55e449c310885aa5885b0601 - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\api-ms-win-core-localization-l1-2-0.dll -
11f60fbd6b793152d367135781ab120c916ea894bc5c0ea8b32d23a6e0776c3f - C:\Program Files\Eclipse Adoptium\jdk-21.0.5+11-jre\bin\dt_socket.dll -
38786287fc0bc94e457a552e933a89be999161be10a3e547156ae3b28ac402cc
Embedded URLs
- http://creativecommons.org/publicdomain/zero/1.0/
- http://www.gnu.org/licenses/
- 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.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=1787810444&P2=404&P3=2&P4=j0tHdxKPgg41XW0UjKUoPT6NhZm05XkFT5FyFEmzHsMBVxX50ppsIqQIqEYZQCdV0XXxE%2b9w8bY%2fdq3X73QZUw%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=1787810531&P2=404&P3=2&P4=XlRcf73kGvdQu0PeLK4S3csx2rGMVWfVqN65%2bwpMMRLWfpMwcqXVpeKs4SCshRSKe0g2QPVyDK4Yxjb%2b%2bO3nNQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://c.pki.goog/r/gsr1.crl
- http://c.pki.goog/r/r4.crl
Embedded domains
- creativecommons.org
- geocities.com
- cwru.edu
- gnu.org
- www.gnu.org
- 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
Embedded IP addresses
- 20.42.73.31
- 4.230.171.124
- 48.211.4.16
- 20.247.184.142
- 20.165.94.63
- 4.247.188.224
- 135.232.92.97
- 51.116.253.168
- 4.150.223.109
- 203.26.79.13
- 52.123.128.14
- 20.236.44.162
- 52.123.129.14
- 162.159.142.9
- 135.234.160.246
- 52.123.252.246
- 20.165.94.46
- 52.123.252.231
- 52.148.114.188
- 52.110.12.38
- 125.56.205.51
- 125.56.205.56
- 72.145.35.109
- 142.250.195.163
- 52.110.12.48
File paths
- C:\Windows.old\Windows\containers\serviced\WindowsDefenderApplicationGuard.wim]
- C:\Windows\containers\serviced\WindowsDefenderApplicationGuard.wim][gle=0x00000020]
- C:\Windows.old\Windows\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.17134.1120_none_c3e
- C:\Windows.old\Windows\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.17134.1_none_eedfed
- X:\SysResetTrace-Tel-Merge.etl,
- C:\$WINDOWS.~BT\Sources\Panther\SysResetTrace-Tel-Merge.etl)
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