MalwareTips
File verdict·Decided by the MT AI Engine
Our call

Safe

Portable Nilesoft Shell ZIP scans clean across all engines, with behavior consistent with self-extracting utilities despite heuristic flags.

Trust score90High trust
Shell (Nilesoft) 1.9.18-portable.zip
999.8 KB
8aa0b9c90e88ccce92…7dda43e246
Antivirus engines
0 of 76 flagged
Code signing
Unsigned
Age
First seen 2y ago
MT AI Engine · Verdict analysis

The reasoning behind this verdict

The MT AI Engine weighs every signal from this scan — antivirus detections, sandbox behaviour, code signing, prevalence and historical matches — to reach a single, evidence-based verdict.

92%Confidence
Very high
Reasoning

This ZIP contains Nilesoft Shell portable, a command-line utility, matching filename and extraction behavior. Zero malicious flags from high-coverage scans provide strong clean signal. Heuristics on process injection and direct IP are triggered by legitimate rundll32 DLL execution and Google server contact. Anti-analysis tags exist but are common in portable tools. Community concerns noted but contradicted by engines and lack of persistence or C2.

Key signals · 4

Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.

  1. engines: 0/69 malicious (tier1Total=17 all clean)

  2. prevalence: common_old (413 uniqueSources)

  3. behaviour: contactedIps[0]='173.194.195.94' (Google), no malicious sandbox

  4. triggeredHeuristics[0]: 'MalwareTips.Synth.ProcessInjection' on rundll32 'shell.dll,#1'

Points in its favour
  • 0/69 engine detections
  • 17 tier1 clean reports
  • common_old prevalence (413 sources)
  • No malicious sandbox/dropped children
  • Portable app filename pattern
Points against
  • Process injection heuristic (T1055 via rundll32)
  • Direct IP contact (no DNS)
  • Anti-analysis tags (detect-debug-environment, long-sleeps)
  • Negative reputation (-11)
  • Community malware tags
Recommended action

Safe for use; this is a legitimate portable command shell from Nilesoft. Download from official sources to confirm integrity.

What to do now

This file looks safe based on everything we checked.

  1. This file is safe to use.

  2. Good habit: only download files from the official website or an app store.

  3. Keep your antivirus and Windows updates switched on so you stay protected.

Runtime behaviour

What this file did when executed

This file was detonated in 1 sandbox and its runtime behaviour was observed.

MITRE ATT&CK
10

Adversary techniques mapped to the MITRE ATT&CK framework.

T1010T1055· Process injectionT1056· KeyloggingT1057· Lists programsT1071· Remote server (C2)T1082· System reconT1129· Loads modulesT1497· Sandbox evasionT1562.001· Disables securityT1574.002· Execution hijack
Spawned processes
7
$(unnamed)
"C:\Windows\system32\rundll32.exe" "C:\Users\<USER>\AppData\Local\Temp\shell.dll",#1
$(unnamed)
"C:\Users\<USER>\AppData\Local\Temp\shell.exe"
$(unnamed)
"C:\Windows\SysWOW64\unarchiver.exe" "C:\Users\user\Desktop\portable.zip"
$(unnamed)
C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\i5gwwaom.25n" "C:\Users\user\Desktop\portable.zip"
$(unnamed)
C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
$(unnamed)
"C:\Windows\SysWOW64\unarchiver.exe" "C:\Users\user\Desktop\sample.zip"
$(unnamed)
C:\Windows\SysWOW64\7za.exe "C:\Windows\System32\7za.exe" x -pinfected -y -o"C:\Users\user\AppData\Local\Temp\dhmvppcd.am2" "C:\Users\user\Desktop\sample.zip"
Network activity
1
IP addresses1
  • 173.194.195.94
Filesystem & mutexes
15
Files written15
  • C:\Users\user\AppData\Local\Temp\i5gwwaom.25n
  • C:\Users\user\AppData\Local\Temp\i5gwwaom.25n\LICENSE
  • C:\Users\user\AppData\Local\Temp\i5gwwaom.25n\imports
  • C:\Users\user\AppData\Local\Temp\i5gwwaom.25n\imports\develop.nss
  • C:\Users\user\AppData\Local\Temp\i5gwwaom.25n\imports\file-manage.nss
+10 more
Dropped payload

Files this sample writes at runtime

This file drops 10 children at runtime. None are currently flagged malicious in our cache.

10 unseen
  • cda839657acef7ee6381…d02e25Never scanned
    never seen before
  • b1fe8e12eca260077dd5…4613b2Never scanned
    never seen before
  • 548fb2007054b9cf5e90…3fa7a6Never scanned
    never seen before
  • 6aef50956245b6ca8bc5…2c6c2dNever scanned
    never seen before
  • 10f8ecc6ec94c09dbb7c…fac5fbNever scanned
    never seen before
  • 49002ee99142bd8859e1…6a1a43Never scanned
    never seen before
  • 915e178329803bf5805c…a38d74Never scanned
    never seen before
  • a8ff9e371107a443bc10…a6b651Never scanned
    never seen before
  • db3f4b59e677d1adf910…50a3c3Never scanned
    never seen before
  • 4eabac27d4a5323d4fcb…b461b8Never scanned
    never seen before
No researcher-database hits
External threat-intel sources were not collected for this scan.
Signature matches

YARA & heuristic rule matches

A researcher-curated or high-severity heuristic rule matched this sample. These rules target specific malware families and are near-definitive.

2 synthesis
MITRE ATT&CK profile
Defense evasion× 1C2× 1
MalwareTips synthesis rules
Our own detection rules, applied to the scan data and sandbox behaviour
  • ProcessInjection
    T1055
    high

    MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.

    Evidence
    "C:\Windows\system32\rundll32.exe" "C:\Users\<USER>\AppData\Local\Temp\shell.dll",#1
  • DirectIpC2
    T1071
    medium

    Sample contacted 1 external IP address(es) and zero domains. Benign software virtually always uses DNS; no-DNS direct-IP C2 is a strong malware indicator because it bypasses reputation systems and dodges domain-based blocklists.

    Evidence
    173.194.195.94
Antivirus engine breakdown

0 detections across 76 engines

0 malicious0 suspicious76 clean
Tier-117 engines
0flag
Top commercial AVs (low FP rate)
Tier-241 engines
0flag
Mainstream engines with mixed FP rates
Low-trust18 engines
0flag
Heuristic / generic-AI engines (high FP rate)
All 76 engines report this file as clean.
Hash 8aa0b9c90e88… cross-referenced against 76 AV engines via our AV network.
Prevalence

How widely this file has been seen

Widely seen in the wild for a long time. High prior this is legitimate; isolated detections on common-old files are usually false positives.

Common & old
Unique uploaders
413
Hundreds of people have uploaded this — common.
Total submissions
446
Includes repeat uploads by the same source.
First seen
2y ago
Nov 27, 2024
Prevalence quadrant
Rare · New
Targeted malware lives here
Common · New
Just-released software
Rare · Old
Niche or internal tooling
here
Common · Old
Trusted legitimate binaries
File identity

Forensic fingerprint

File biography
First seen (VT)
11/27/2024, 5:02:51 PM
First seen (MalwareBazaar)
—
Last analysis (VT)
4/20/2026, 8:37:50 AM
Scanned here
4/24/2026, 4:45:39 AM
File name
Shell (Nilesoft) 1.9.18-portable.zip
Size
999.8 KB
MIME type
(unknown)
Detected type
ZIP
SHA-256
8aa0b9c90e88ccce927a88d7126416b9e3d21d91c7748ea5c1cf2b7dda43e246
MD5
340c6f27b75e67172d3aa98e50293ea3
SHA-1
c2ff976f9e6cd5402f7df35fda08c024e20c6a50
First seen (VT)
11/27/2024, 5:02:51 PM
Last analysis (VT)
4/20/2026, 8:37:50 AM
First scan (MalwareTips)
4/24/2026, 4:45:39 AM
Last scan (MalwareTips)
4/24/2026, 4:45:39 AM
Community reputation
-11flagged
Behavior tags
long-sleepscontains-pezipchecks-user-inputdetect-debug-environment
Frequently asked

Safety FAQ

Common questions about Shell (Nilesoft) 1.9.18-portable.zip, answered from the scan data above.

  • Shell (Nilesoft) 1.9.18-portable.zip appears safe. 76 of 76 antivirus engines report it clean. As a habit, only open files you downloaded from the official source, since attackers sometimes distribute trojanised copies of legitimate software under the same name.
  • Shell (Nilesoft) 1.9.18-portable.zip is a compressed archive, about 1000 KB. Our analysis found no threat indicators for it. A file's name can be reused by different files, so we identify it by its cryptographic hash (below).
  • None — all 76 antivirus engines we queried report Shell (Nilesoft) 1.9.18-portable.zip as clean. That's reassuring, though brand-new malware can briefly evade detection before vendors add signatures, so we also weigh the file's behaviour and reputation.
  • The SHA-256 hash of Shell (Nilesoft) 1.9.18-portable.zip is 8aa0b9c90e88ccce927a88d7126416b9e3d21d91c7748ea5c1cf2b7dda43e246, and its MD5 is 340c6f27b75e67172d3aa98e50293ea3. This hash is the file's unique fingerprint — two files with the same SHA-256 are identical. Use it to confirm you're looking at exactly this file (not just one with the same name) when comparing against antivirus databases or a download's published checksum.
  • Based on this scan, yes — Shell (Nilesoft) 1.9.18-portable.zip shows no threat indicators. The important caveat is source: make sure you downloaded it from the official website or a trusted store, because attackers sometimes distribute malware-laced copies under a legitimate file's name. If your own antivirus flags it while we report it clean, that is most often a false positive, but verify the source before overriding your antivirus.
  • This report reflects the scan run on April 24, 2026. Because a file's hash never changes, the identity of Shell (Nilesoft) 1.9.18-portable.zip is fixed — but antivirus coverage improves over time, so a file that looks clean today can pick up detections later (and vice-versa). If you need the latest picture, MalwareTips staff can re-run the analysis from scratch.
Community classification

Reviews & malware reports(0)

Tell the community what you saw. Tag the sample — Trojan, Adware, False Positive — and share what the file did on your system. Your report helps confirm or dispute the AV verdict.

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