Categories: PUA

What is “PUA:Win32/Soft32Downloader”?

The PUA:Win32/Soft32Downloader is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What PUA:Win32/Soft32Downloader virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (2 unique times)
  • Presents an Authenticode digital signature
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic
  • Performs some HTTP requests
  • Checks the version of Bios, possibly for anti-virtualization
  • Checks the CPU name from registry, possibly for anti-virtualization
  • Attempts to create or modify system certificates
  • Collects information to fingerprint the system

Related domains:

ocsp.digicert.com
flow.lavasoft.com

How to determine PUA:Win32/Soft32Downloader?


File Info:

crc32: 802F4F0Dmd5: dfa75f58891986eb7b869d87c686ee94name: DFA75F58891986EB7B869D87C686EE94.mlwsha1: 759efcef43d7d4b90d4d94e2a25fc4f5cf88809csha256: 116b99023528fa1d651771e8dfa347e1c2467ade8bc1ff3955d2b9059f102defsha512: 32532f592755d783038c4f69578ea9ec41b9bbf2e1f7ca013039862f97bc74468884f78760237e4b9a8706b14f4e340dbc727f4849fc069b0cfe253675cb08c9ssdeep: 24576:cG50ZfFK0+RTg1IjFYCfJrwjwvTkPoR1q9khO3uX/f6R+/IV:cG5Ufgzs65YCfJEjw7F6mh8agDtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: ITNT SRLInternalName: GenericSetup.exeFileVersion: 2.7.0.1489CompanyName: ITNT SRLProductName: Soft32 DownloaderProductVersion: 2.7.0.1489FileDescription: Soft32 DownloaderOriginalFilename: Soft32 DownloaderTranslation: 0x0409 0x04b0

PUA:Win32/Soft32Downloader also known as:

Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Ser.Ursu.25776
FireEye Generic.mg.dfa75f58891986eb
ALYac Gen:Variant.Ser.Ursu.25776
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
BitDefender Gen:Variant.Ser.Ursu.25776
Cyren W32/WebCompanion.A.gen!Eldorado
APEX Malicious
Avast Win32:AdwareSig [Adw]
Kaspersky not-a-virus:Downloader.Win32.OfferGenerator.gen
Ad-Aware Gen:Variant.Ser.Ursu.25776
Emsisoft Application.Downloader (A)
F-Secure Adware.ADWARE/Agent.lyrad
DrWeb Adware.Downware.19364
McAfee-GW-Edition Artemis!PUP
Sophos Generic ML PUA (PUA)
MaxSecure Trojan.Trojan.Win32.Agent.iov_188043
Avira ADWARE/Agent.lyrad
MAX malware (ai score=86)
Antiy-AVL GrayWare/Win32.Presenoker
Microsoft PUA:Win32/Soft32Downloader
Gridinsoft Adware.Win32.Downloader.oa
Arcabit Trojan.Ser.Ursu.D64B0
ZoneAlarm not-a-virus:Downloader.Win32.OfferGenerator.gen
GData MSIL.Application.WebCompanion.F
Cynet Malicious (score: 90)
AhnLab-V3 PUP/Win32.Agent.R243598
McAfee Artemis!DFA75F588919
Malwarebytes PUP.Optional.BundleInstaller
ESET-NOD32 a variant of MSIL/WebCompanion.A potentially unwanted
TrendMicro-HouseCall TROJ_GEN.R067H0CAS21
Fortinet Riskware/OfferGenerator
AVG Win32:AdwareSig [Adw]
Qihoo-360 Win32/TrojanDownloader.Generic.HgIASOUA

How to remove PUA:Win32/Soft32Downloader?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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