MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7. 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: 15

Intelligence 15 IOCs YARA 4 File information Comments

SHA256 hash:	18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7
SHA3-384 hash:	b12a2fe62148f44e989f083a00fbc919f1b428821cd7f4f18b8fe19216f00cd40c76a38163128d9ad98ee59be47b3c58
SHA1 hash:	af88bea8882d3e23ab671808a173d8d90a813dc1
MD5 hash:	175fcc892ffcd10db3eb9f00fabd7db0
humanhash:	texas-nevada-mountain-three
File name:	decapodvsWW.exe
Download:	download sample
Signature	KoiLoader Create hunting rule
File size:	185'344 bytes
First seen:	2024-06-04 00:22:41 UTC
Last seen:	2024-06-04 01:24:49 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	66deda4204cb009d8c01c3f28c17567f (34 x KoiLoader, 2 x AZORult)
ssdeep	3072:HCmlA+2TGMF85+bkRG32foUP9GmPe97UoGY9tyN1asYY2f7+UWHrFEoy3eHBCbvt:imlV4h8JG3QUzg1asnS/WHrFEHOhMvvF
TLSH	T1E0046C4071F08875E533587314A68D488F3CFDF18BE69DCB1F581A2E1B661927A33EA6
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:	45-154-204-97 exe KoiLoader shalom-pt

Intelligence

File Origin

# of uploads :

# of downloads :

600

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7.exe

Verdict:

Malicious activity

Analysis date:

2024-06-04 00:25:16 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/fbb51c85-5fe5-47b2-b3c4-30a5fa4e7ad1

Note:

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

Detection(s):

SecuriteInfo.com.Win32.TrojanX-gen.32176.9029.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=665e6b1fab69e84d6a2f4caawin7simulatehigh_evasion

Tags:

Kryptik

Result

Verdict:

Clean

Maliciousness:

Behaviour

Searching for the window

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

epmicrosoft_visual_cc microsoft_visual_cc

Link:

https://www.filescan.io/uploads/665e5e6a6b8dba248b3bb959/reports/e65e12cf-8862-4edd-ad6d-5b6c6ce6d520/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

Malware family:

Kpot stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/7751bb9c-8d77-49bd-8a09-ba6573b18800

Result

Threat name:

AZORult++

Detection:

malicious

Classification:

bank.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1451465

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 mutex)

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7/

Threat name:

Win32.Trojan.Koiloader

Status:

Malicious

First seen:

2024-05-29 08:08:25 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=dcsnkajv3rfbmy45f3xspwuh36nbej7r3e3dgfudpyx6wmnewtdq._file

Verdict:

malicious

Result

Malware family:

koiloader

Score:

10/10

Tags:

family:koiloader loader

Link:

https://tria.ge/reports/240604-apgb5sfd23/

Behaviour

Detects KoiLoader payload

KoiLoader

Malware Config

C2 Extraction:

http://45.154.204.97/midnoon.php

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/4500eb3a-9c43-4754-a20e-05ec434b340d

Unpacked files

SH256 hash:

45e32923640d95d6e8d0c705f3f58029d255d250b3a87ba2c19aa2234e9c5db8

MD5 hash:

1cea401f8d29bf9da4462511407f51c9

SHA1 hash:

9005450872298bdb820a0c04ff4c4697373c6a6a

Detections:

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Link:

https://www.unpac.me/results/cb7da25a-7f51-46ef-a4f0-82c6646fa535/

SH256 hash:

18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

MD5 hash:

175fcc892ffcd10db3eb9f00fabd7db0

SHA1 hash:

af88bea8882d3e23ab671808a173d8d90a813dc1

Link:

https://www.unpac.me/results/cb7da25a-7f51-46ef-a4f0-82c6646fa535/

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/18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

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 18a4d50135dc4a16639d2eef27da87df9a1227f1d9363316837e2feb31a4b4c7

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2874197/

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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