GridinSoft Threat Intelligence

7z21.03-zstd-x64.exe threat report

Detected as Trojan.Downloader File reputation report
MD5 f755b434e5648f9f2c42102a04da6d3b
Latest seen 2023-09-17 23:14:15 (2 years ago)
First seen 2023-09-17 23:14:15 (2 years ago)
Size 2 MB
Product 7-Zip ZS

GridinSoft Anti-Malware detection

Detected by GridinSoft before you download

The current ThreatInfo record shows this exact file hash detected as Trojan.Downloader. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.

Detection name
Trojan.Downloader
Recommended action
Scan and remove
Last analysis
2023-09-17 23:14:15 (2 years ago)
File hash
f755b434e5648f9f2c42102a04da6d3b
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Trojan.Downloader, part of the Trojan threat category.

Category context

Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.

Timeline

First seen 2023-09-17 23:14:15 (2 years ago); latest analysis 2023-09-17 23:14:15 (2 years ago).

Publisher context

Company metadata: Igor Pavlov, Tino Reichardt. Product metadata: 7-Zip ZS.

Observed locations

ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.

Recommended action

What to do next

  1. Compare the MD5 above with the file found on the device.
  2. Check whether the file appears in the observed locations or under one of the alternate names.
  3. Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.

7z21.03-zstd-x64.exe is a Windows file recorded in the ThreatInfo database. It is associated with 7-Zip ZS. The reported company name is Igor Pavlov, Tino Reichardt. The current detection status is Trojan.Downloader, based on the latest analysis from 2023-09-17 23:14:15 (2 years ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.

If 7z21.03-zstd-x64.exe appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Trojan.Downloader.

Product Name: 7-Zip ZS
Company Name: Igor Pavlov, Tino Reichardt
MD5: f755b434e5648f9f2c42102a04da6d3b
Size: 2 MB
First Published: 2023-09-17 23:14:15 (2 years ago)
Latest Published: 2023-09-17 23:14:15 (2 years ago)
Status: Trojan.Downloader (on last analysis)
Analysis Date: 2023-09-17 23:14:15 (2 years ago)
7z21.03-zstd-x64.exe detection screenshot

The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.

%desktop%

ThreatInfo has observed 7z21.03-zstd-x64.exe in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.

Windows 10 100.0%

The most common operating system signal for 7z21.03-zstd-x64.exe is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.

7z21.03-zstd-x64.exe is identified as pe for 64-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 64-bit
Subsystem Windows GUI
Entry point 0x00008a2c
Image base 0x0000000140000000

PE Sections:

Sections 7
Raw data 132096

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 76288 bytes · 57.8% of section data
MD5 86c0bf80b4c46edbe34d303296f77c31
.rdata 41984 bytes · 31.8% of section data
MD5 ede47250df40f703c2bf5f6904193a8b
.data 2560 bytes · 1.9% of section data
MD5 b7c58f4b736313d76a61ceb967dec64d
.pdata 4096 bytes · 3.1% of section data
MD5 274589364dadb0307bb34eb06f5468b5
_RDATA 512 bytes · 0.4% of section data
Uncommon name
MD5 2db41f914088224c3d12b530f7ef76cb
.rsrc 4608 bytes · 3.5% of section data
MD5 7c63061c240a59d104dbf29f43c57f02
.reloc 2048 bytes · 1.6% of section data
MD5 c0c7f8c5f287d40afda79abf8d9317cd

PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.

Report conclusion

GridinSoft detects this file as Trojan.Downloader

This report identifies 7z21.03-zstd-x64.exe by MD5 f755b434e5648f9f2c42102a04da6d3b. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with f755b434e5648f9f2c42102a04da6d3b.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan and remove the object if the same hash is found. Use the Trojan category to compare similar reports.