MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44. 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: 17

Intelligence 17 IOCs YARA 4 File information Comments

SHA256 hash:	673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44
SHA3-384 hash:	704415a8b8be1511d77b68e69f31246b34d1bfaa8069ad42f1760acec218a4c3cd0c871f3f6b6aab9aa42a2082b73b79
SHA1 hash:	61c78287030f58e9e3840e2415cae8e99dce4a2e
MD5 hash:	d3d4f9479544722b50d57432447b57b0
humanhash:	fillet-potato-maine-island
File name:	spiralitykSzkj.exe
Download:	download sample
Signature	KoiLoader Create hunting rule
File size:	185'344 bytes
First seen:	2024-06-11 12:55:56 UTC
Last seen:	2024-06-11 14:46:06 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	66deda4204cb009d8c01c3f28c17567f (34 x KoiLoader, 2 x AZORult)
ssdeep	3072:nCmlA+2TGMF85+bkRG32foUP9GmPe97UodZDO4eHsZZZZZZZZZZZZZtRP/tUlnfR:CmlV4h8JG3QUzdZDO4eHsZZZZZZZZZZA
Threatray	24 similar samples on MalwareBazaar
TLSH	T145047A143DC8C532D176ADB2A5B09D60923CFC609FABADDF870819C96A504E1E933F5B
TrID	40.3% (.EXE) Win64 Executable (generic) (10523/12/4) 19.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.2% (.EXE) Win32 Executable (generic) (4504/4/1) 7.7% (.EXE) OS/2 Executable (generic) (2029/13) 7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter	V3n0mStrike
Tags:	46-30-247-142 exe KoiLoader lechiavetteusb-it

Intelligence

File Origin

# of uploads :

# of downloads :

356

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44.exe

Verdict:

Suspicious activity

Analysis date:

2024-06-11 12:58:00 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/a279c5b2-7d56-4027-95cc-a46c914090f7

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.DownLoader47.477.6967.26247.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66684ac6a439c6d6b0877892win7simulatehigh_evasion

Tags:

Kryptik

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Verdict:

No Threat

Threat level:

10/10

Confidence:

100%

Tags:

epmicrosoft_visual_cc microsoft_visual_cc

Link:

https://www.filescan.io/uploads/666849670bf5978c0b0e5250/reports/381a6d6f-5f8d-44be-9aa9-f6ec77c5b8fa/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Kpot stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/c3c0a09b-762a-4d88-9230-084770b21d1d

Result

Threat name:

AZORult++

Detection:

malicious

Classification:

bank.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1455162

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

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

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

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

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44/

Threat name:

Win32.Trojan.KoiLoader

Status:

Malicious

First seen:

2024-06-11 12:56:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

24 of 24 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=m47indfrt2ujb33jsv7bduelsxlwdflwepbwuxrts2ae45ufxnca._file

Verdict:

malicious

KoiLoader

18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

KoiLoader

673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

KoiLoader

88d940bc7a8a820cef944cfb77998b1f59694c86a8644f54788be04ae7fd1bb4

KoiLoader

9e1c9678aa1a203879ea5e93fd18f2831f6168ebf2d1f62680091bc21fc4217c

KoiLoader

b6cd42853c9f137da206ed6dfd50f8b2d1e02c11279893410ff410a9bd505682

KoiLoader

fed789b6353a0b47856963869cd0730729e72b21c08ab54ad7d4bec4f38d3da8

KoiLoader

+ 14 additional samples on MalwareBazaar

Result

Malware family:

koiloader

Score:

10/10

Tags:

family:koiloader loader

Link:

https://tria.ge/reports/240611-p6b63sxhrm/

Behaviour

Detects KoiLoader payload

KoiLoader

Malware Config

C2 Extraction:

http://89.251.22.227/guacos.php

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/b0d06312-951e-4d44-8546-d771fdee1c7c

Unpacked files

SH256 hash:

13380279030203519efedc9634dc6d9f1e0716ddfe6debd059b2d0db53b8e25b

MD5 hash:

1070c46449dd26560ed57e0ef1d46a27

SHA1 hash:

29786f5a5e90ad26b6f0168d2cb2ce5d0b8aa6ee

Detections:

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Link:

https://www.unpac.me/results/b5e49bc8-da93-4d4d-8e44-fe8f5a08bce1/

SH256 hash:

673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

MD5 hash:

d3d4f9479544722b50d57432447b57b0

SHA1 hash:

61c78287030f58e9e3840e2415cae8e99dce4a2e

Link:

https://www.unpac.me/results/b5e49bc8-da93-4d4d-8e44-fe8f5a08bce1/

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/673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

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:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	Windows_Generic_Threat_1417511b Create hunting rule
Author:	Elastic Security

File information

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

Web download

KoiLoader

exe 673e868cb19ea890ef69957e11d08b95d761957623c36a5e3396804e7685bb44

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2883602/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineA KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileW

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