MALICIOUS — b503c190a36b561767a2c82e864fbf979297b69af6cb6149f13c95fa1e7276fa
MALICIOUS — b503c190a36b561767a2c82e864fbf979297b69af6cb6149f13c95fa1e7276fa is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (90/100), attributed to the UPX family. 8 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
b503c190a36b561767a2c82e864fbf979297b69af6cb6149f13c95fa1e7276fa - SHA-1:
66998356be175680b7c255a6857d12a844a8c27e - MD5:
eb420a91c41800216e2145c842bde110 - imphash:
99c27169ecdf0bb12dce110e9380f78a - ssdeep:
98304:+t+ww48YTRGrjsYrXa1PSELk/GEAUfZ82ub8GRprbGJ1y1xWcdGWLpDi5PdjDJi:+xaELkaUfdOMeXdVlG5Fp+ - TLSH:
T1CB6712CC1E10A714EAF287557C508D5F4AA3F09DB9BED43C0D8BD49EB261473A422AC9 - Submitted as: b503c190a36b561767a2c82e864fbf979297b69af6cb6149f13c95fa1e7276fa
- File type: pe · Size: 6958381 bytes
- Verdict: malicious (90/100) · Family: UPX
Detections (8 of 55 engines)
- YARA: MalwareAnalyser built-in: Packer_UPX_Sections
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:.data0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- YARA: MalwareAnalyser community pack: TL_UPX_Packed
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Trojan:Win32/Downloader.CF!MTB
- Emsisoft (Emergency Kit): Gen:Variant.Doina.23645
- Kaspersky (KVRT): VHO:Trojan.Win32.Exnet.gen
MITRE ATT&CK
YARA
- Packer_UPX_Sections
Why this verdict
The malicious score of 90/100 is the fusion of 9 weighted signals:
- UPX packer section names (rule
Packer_UPX_Sections) - yara signal, weight 0.40, confidence 0.90 - Contacted 20 external host(s) at runtime (20 HTTP) - network signal, weight 0.40, confidence 0.80
- YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - YARA: MalwareAnalyser community pack flagged TL_UPX_Packed (rule
TL_UPX_Packed) - engine signal, weight 0.35, confidence 0.70 - YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: https://secure.comodo.net/CPS0A - static signal, weight 0.35, confidence 0.60
- Packing/obfuscation: high-entropy-sections:.data0 - static signal, weight 0.25, confidence 0.55
- enumerate processes (rule
enumerate processes) - capa signal, weight 0.20, confidence 0.60 - Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
221 behavior events · 0 ATT&CK techniques · 5 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
- settings-win.data.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\cfg.ini -
18ffe03c7a5dcfaf5c396a40bc9f6cd4e709dbf86adb6b95ace0193e141a7163 - C:\Users\analyst\AppData\Local\Temp\msedge_installer.log -
1b51041f8085d0ebd1398f4512718ea8209893ca9f1c64bdf530e0cacf0f6eee - C:\Users\analyst\AppData\Local\Temp\cv_debug.log -
624ff0124ff1097c61c11a6f0265e516a900cc1aafb44110142df0f8f1aaf69a - C:\Users\analyst\AppData\Local\Temp\tsk_43W1GNHA.exe -
6f8ca204d3b62380704989a074f486a5aa20b578f9cf9e5c472d1ec01fec7cbe - C:\Users\analyst\AppData\Local\Temp\wmsetup.log -
b11630055c84537e8859368be34c50cda8d82b8db9a15082ef95f4fd68c7b155
Embedded URLs
- http://crl.thawte.com/ThawteTimestampingCA.crl0
- http://ts-aia.ws.symantec.com/tss-ca-g2.cer0
- http://ts-crl.ws.symantec.com/tss-ca-g2.crl0
- https://secure.comodo.net/CPS0A
- 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=1787790410&P2=404&P3=2&P4=RR5fd%2bR4vG9OB0U%2fMZJxVTTQyr5eYnFgPzk4H6gLlcijLkJuRBJiffAUFm8Resg4XoLGsLkHIFiAqNVcEWVZ7w%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=1787790497&P2=404&P3=2&P4=QbpmsjO8e7x3DTYdjiyi8ixv3w%2fBOSI9A%2f%2bzJif%2bGwdSTV4AXs%2bWFdOl%2bfn7phWPkILHOCNOeURqDUEfD5gV2A%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- www.qq.com
- 3x.ca
- k.tw
- crl.thawte.com
- crl.usertrust.com
- ts-aia.ws.symantec.com
- ts-crl.ws.symantec.com
- crt.usertrust.com
- secure.comodo.net
- crl.comodoca.com
- crt.comodoca.com
Embedded IP addresses
- 20.184.175.2
- 4.247.188.224
- 4.230.171.124
- 20.247.185.124
- 74.178.240.61
- 135.233.95.135
- 20.42.73.27
- 20.231.239.246
- 52.123.128.14
- 162.159.142.9
- 172.178.240.162
- 52.123.252.218
- 203.26.79.13
- 52.148.114.188
- 135.233.95.80
- 172.66.2.5
- 72.145.35.105
- 74.178.232.29
- 52.110.12.52
- 52.110.12.16
File paths
- X:\:h:l:p:t:x:
- m:\tf\0I0.log
- M:\src\04F\_SHW_CF_181213\SWH_DLL_01\HookDll\Release\HookDll.pdb
- T:\:d:l:t:
- U:\:s:}:
- T:\:t:
- e:\i+
More UPX samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report