MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a. 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: 18

Intelligence 18 IOCs YARA 6 File information Comments

SHA256 hash:	2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a
SHA3-384 hash:	7fef357afc2fb8e99f2d83d1732038ab6a1bdeb8ed1ab36769bb54bd31b1d10bf08df9e7d721a8062f6f14b3b657ea20
SHA1 hash:	d60df4f891e02679b4a2ec85d3d028ae980201cb
MD5 hash:	d0532ba2a5f77e7531b2f1a6913a14c4
humanhash:	red-bulldog-queen-nitrogen
File name:	2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a.exe
Download:	download sample
Signature	KoiLoader Create hunting rule
File size:	278'528 bytes
First seen:	2026-09-24 02:09:16 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	66deda4204cb009d8c01c3f28c17567f (35 x KoiLoader, 2 x AZORult)
ssdeep	3072:JnQSw+8qvRI4/D/QI6AWMBWl+V4y4jrv34CvCWteBGDKeEvjTxEMMHyRLCoW3Cv:JgqVD6AjBOLteBGGeEvjtEVHmjW3Cv
TLSH	T178444A2979C81736C9B95BB238B247E1803DA920EF5ACEDF1B815C161FE72D08516C7E
TrID	29.5% (.EXE) Win64 Executable (generic) (6522/11/2) 22.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 20.3% (.EXE) Win32 Executable (generic) (4504/4/1) 9.1% (.EXE) OS/2 Executable (generic) (2029/13) 9.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	whack_sh
Tags:	exe KoiLoader

Intelligence

File Origin

# of uploads :

# of downloads :

182

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

Koi

Details

Link:

https://research.acce.ciphertechsolutions.com/results/b4e057e0-2d50-410b-accd-44cd698942e7/

Malware family:

amadey

ID:

File name:

Nuclear Bomb.zip

Verdict:

Malicious activity

Analysis date:

2026-01-09 21:37:11 UTC

Tags:

arch-exec auto metasploit framework python stealer stealc github anti-evasion xenorat rat possible-phishing clickfix powershell phishing amadey botnet credentialflusher miner networm amus cobaltstrike backdoor azorult loader adware cryptowall ransomware evasion putty rmm-tool discord generic telegram svc havoc tool njrat bladabindi whitesnake tinynuke rhadamanthys websocket neshta formbook xred xmrig guloader gh0st worm koiloader discordrat screenconnect rdp meterpreter coinminer smb pyinstaller bruteratel koistealer ghostsocks proxyware whitesnakestealer wannacry pushware asyncrat stealerium pastebin redline irc purelogs vidar xworm remcos donutloader scan smbscan muckstealer dcrat jigsaw quasar bdaejec hijackloader offloader clipper diamotrix cryptolocker purecrypter anydesk java agenttesla pythonstealer noescape wiper teamviewer remote eicar-test braodo

Link:

https://app.any.run/tasks/b51f6456-e185-4341-a8dc-0ad5fc19c91b

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

KoiLoader

Link:

https://www.capesandbox.com/analysis/88757/

Detection(s):

SecuriteInfo.com.Trojan.PWS.Stealer.40606-2.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug emotet evasive lockbit microsoft_visual_cc stealer

Link:

https://www.filescan.io/uploads/6ab4865b654b248d1296c9e0/reports/6ec525fe-200d-4613-8cb0-db9518bc9b52/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-19T16:31:00Z UTC

Last seen:

2026-09-25T17:53:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a/results?tab=lookup

Malware family:

Kpot stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a1aa7e72-5d33-417f-9692-56a4dfb80d62

Result

Threat name:

AZORult++, KoiLoader

Detection:

malicious

Classification:

bank.troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1977117

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contain functionality to detect virtual machines

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to compare user and computer (likely to detect sandboxes)

Contains functionality to inject code into remote processes

Detected AZORult++ Trojan

Detected unpacking (creates a PE file in dynamic memory)

Found evasive API chain (may stop execution after checking mutex)

Found malware configuration

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Unusual module load detection (module proxying)

Yara detected KoiLoader

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/d0532ba2a5f77e7531b2f1a6913a14c4

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a/

Threat name:

Win32.Trojan.KoiLoader

Status:

Malicious

First seen:

2025-11-19 23:58:41 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

32 of 38 (84.21%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=fiaytb6y7m2iups6avmvv66njp5fmmnw4dpygimtsdgkfzpkowfa._file

Verdict:

malicious

Label(s):

KoiLoader

Link:

https://reports.threatray.com/08fbb2ba-eb51-4bd4-9a84-13cc679717ec

Result

Malware family:

koiloader

Score:

10/10

Tags:

family:koiloader discovery loader

Link:

https://tria.ge/reports/260924-clb95ayy9j/

Behaviour

System Location Discovery: System Language Discovery

Detects KoiLoader payload

Family: KoiLoader

Malware Config

C2 Extraction:

http://185.62.57.53/unerect.php

Unpacked files

SH256 hash:

2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a

MD5 hash:

d0532ba2a5f77e7531b2f1a6913a14c4

SHA1 hash:

d60df4f891e02679b4a2ec85d3d028ae980201cb

Link:

https://www.unpac.me/results/d8a822a0-2418-49d2-ac26-464d78e1fcd5/

SH256 hash:

12a57fd30d81efbd0b68dbe2f720f68c1270b47be6d48cb50bcc618de3d56e0f

MD5 hash:

fda72d8b1ec01723adefdcd507b50c4e

SHA1 hash:

2771eac57e21bf376bdfc000fefd7e727fecb6a2

Detections:

triage_koi_loader_troj

win_koiloader_auto

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

win_mal_Koi_loader_decrypted

Link:

https://www.unpac.me/results/d8a822a0-2418-49d2-ac26-464d78e1fcd5/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/2a018987d8fb348a3e5e05595afbcd4bfa5631b6e0df83219390cca2e5ea758a

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	KoiLoader Create hunting rule
Author:	YungBinary
Description:	KoiLoader

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.