MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


KoiLoader


Vendor detections: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327
SHA3-384 hash: 0e0a328b861ae2785dbb9094f99318c3f25c1fcd30e183e52744acb2051cd30ca1819e84bbb8db3517e4480d81cd4e08
SHA1 hash: 55191dc5be978412fab02a2071c6f1c386ba4587
MD5 hash: de023e3cdcdff98a6b6083b44002f075
humanhash: july-victor-diet-purple
File name:debug2.ps1
Download: download sample
Signature KoiLoader
Create hunting rule
File size:327'159 bytes
First seen:2025-08-15 15:35:06 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 6144:X83v7RvYPKm6itx7Dp8EqLtlZ9LXrGLCOXVdXH0ytgLrsJiZK9j5bNZ6v9dr2Gcu:s3x81GZhoJEfIrE2GsxEd
TLSH T1F164A7DB677A2CA60D47377CD7926B83AF9B14B00172509FFAED5929F0DB13980B0429
Magika powershell
Reporter abuse_ch
Tags:KoiLoader ps1

Intelligence

File Origin
# of uploads :
1
# of downloads :
39
Origin country :
SE SE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.PUA.Powershell.Downloader-5.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Score:
50%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689f54358fd55a79c5274034
Tags:
spawn
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/689f53ddabfbaec318239342/reports/f06f71a8-ef84-4b4f-b3f0-8de775e168ee/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327
Result
Threat name:
KoiLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1758000
Signature
AI detected malicious Powershell script
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected KoiLoader
Behaviour
Behavior Graph:
Download SVG
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327/
Threat name:
Script-PowerShell.Trojan.KoiLoader
Create hunting rule
Status:
Malicious
First seen:
2023-06-24 19:15:57 UTC
File Type:
Text (PowerShell)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ujoc6yn2763c4vxbmfucvd5olb7c76ct2r6cwsuncvspw7wzgmtq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion execution
Link:
https://tria.ge/reports/250815-s1qn3aylw4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Command and Scripting Interpreter: PowerShell
Blocklisted process makes network request
Modifies trusted root certificate store through registry
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

KoiLoader

PowerShell (PS) ps1 a25c2f61baffb62e56e161682a8fae587e2ff853d47c2b4a8d1564fb7ed93327

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3331534/
  
Delivery method
Distributed via web download

Comments