MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992. 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

StealeriumStealer

Vendor detections: 16

Intelligence 16 IOCs YARA 20 File information Comments

SHA256 hash:	18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992
SHA3-384 hash:	ac76dcd9e69fb91cc7dba6dd160eced55743f4e482762a3a80805999cc4dd548412b50253274c73ef295dd0ad613e4d9
SHA1 hash:	3e1e81c632d97922df7b23ca6f4d1c2eaab303ea
MD5 hash:	556555f19852e8685dc8d465ef09b815
humanhash:	cold-queen-north-california
File name:	Cooperbuild34.exe
Download:	download sample
Signature	StealeriumStealer Create hunting rule
File size:	7'383'552 bytes
First seen:	2025-03-19 13:09:00 UTC
Last seen:	2025-03-21 16:43:13 UTC
File type:	exe
MIME type:	application/x-dosexec
ssdeep	196608:bMbuV25DeTD+oqzukSIlLtIY79n8SI75bWAXAkuujCPX9YG9he5GnQCAJKNc:8A403qakSoR7tfI7ZtXADu8X9Y95GQLJ
Threatray	54 similar samples on MalwareBazaar
TLSH	T1A176334067EC0619F5BF6F78A87152118E36B513E43ADB8D198C219C0E72B82EDA1F77
TrID	44.4% (.EXE) Win64 Executable (generic) (10522/11/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	JAMESWT_WT
Tags:	176-65-144-3 exe StealeriumStealer

Intelligence

File Origin

# of uploads :

# of downloads :

446

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Cooperbuild34.exe

Verdict:

Malicious activity

Analysis date:

2025-03-19 13:16:17 UTC

Tags:

stealer stealerium crypto-regex

Link:

https://app.any.run/tasks/e74d97b3-5927-43c8-8d77-1b12b77ed9ab

Note:

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

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67dac479115e7b48b48eabb4

Tags:

infosteal vmdetect

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

Creating a file in the %temp% directory

Сreating synchronization primitives

Running batch commands

Creating a process with a hidden window

Launching a process

Searching for synchronization primitives

Creating a file

Launching a tool to kill processes

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm anti-vm cmd evasive findstr fingerprint hacktool lolbin netsh obfuscated packed packed packer_detected reconnaissance stealer stealerium

Link:

https://www.filescan.io/uploads/67dac1fb01edd28374b47c1c/reports/2bb9a06f-78c8-41f9-a605-ff01c7e2d34d/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

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:

Stealerium Stealer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6d9ef213-5bdf-467e-be3e-c4e87210f823

Result

Threat name:

Stealerium

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1643081

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Contains functionality to capture screen (.Net source)

Contains functionality to log keystrokes (.Net Source)

Found many strings related to Crypto-Wallets (likely being stolen)

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

Sample uses string decryption to hide its real strings

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Yara detected Costura Assembly Loader

Yara detected Stealerium

Yara detected Telegram Recon

Behaviour

Behavior Graph:

Download SVG

Score:

88%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992/

Threat name:

ByteCode-MSIL.Infostealer.Browsstl

Status:

Malicious

First seen:

2025-03-19 02:49:35 UTC

File Type:

PE+ (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ddg325qjmg56iwvw3lajrow2xbkw4xbizushitcy7bhlgjk5vgja._file

Verdict:

malicious

Label(s):

stealerium

StealeriumStealer

109163f08d1b7ced6e8aa1a6302a4a99706ad7e61dd9eaea027a3cb230e6adaa

StealeriumStealer

1d810a842c4a71e7490f0a88bb9b0d3c82b084147e73fb2e4ef3c32456055d04

StealeriumStealer

3c62a4a3091cd0f0a91da1e92bf88c96e0da5f81dd0b434ffb5fb55948928158

StealeriumStealer

6ff96de44e65161cfb8afd5e46e30b4940be0187b0c5422ff270f4e5adfb60a7

StealeriumStealer

+ 44 additional samples on MalwareBazaar

Result

Malware family:

stealerium

Score:

10/10

Tags:

family:stealerium stealer

Link:

https://tria.ge/reports/250319-qdvcmazrx8/

Behaviour

Delays execution with timeout.exe

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Checks computer location settings

Stealerium

Stealerium family

Malware Config

C2 Extraction:

https://api.telegram.org/bot1616004787:AAH60oNqVa82nffKp0gB2yn5A_jmiTy0_XY/sendMessage?chat_id=

Verdict:

Malicious

Tags:

stealer stealerium Win.Packed.Msilzilla-10005488-0

YARA:

MALWARE_Win_Multi_Family_Infostealer MALWARE_Win_Stealerium

Link:

https://app.threat.zone/submission/1f6f6384-70e9-400d-bd21-e265b0afc4e6

Unpacked files

SH256 hash:

18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

MD5 hash:

556555f19852e8685dc8d465ef09b815

SHA1 hash:

3e1e81c632d97922df7b23ca6f4d1c2eaab303ea

Link:

https://www.unpac.me/results/f7c6edf2-bb15-4fa5-aab7-690ff1a82c12/

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/18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

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

Rule name:	grakate_stealer_nov_2021 Create hunting rule

Rule name:	INDICATOR_EXE_Packed_Fody Create hunting rule
Author:	ditekSHen
Description:	Detects executables manipulated with Fody

Rule name:	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs Create hunting rule
Author:	ditekSHen
Description:	Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Rule name:	INDICATOR_SUSPICIOUS_EXE_CC_Regex Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing credit card regular expressions

Rule name:	INDICATOR_SUSPICIOUS_EXE_Discord_Regex Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Discord tokens regular expressions

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing possible sandbox analysis VM names

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing possible sandbox analysis VM usernames

Rule name:	INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing SQL queries to confidential data stores. Observed in infostealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot Create hunting rule
Author:	ditekSHen
Description:	Detects executables using Telegram Chat Bot

Rule name:	INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon Create hunting rule
Author:	ditekSHen
Description:	Detects executables with interest in wireless interface using netsh

Rule name:	Macos_Infostealer_Wallets_8e469ea0 Create hunting rule
Author:	Elastic Security

Rule name:	MALWARE_Win_Multi_Family_InfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects Prynt, WorldWind, DarkEye, Stealerium and ToxicEye / TelegramRAT infostealers

Rule name:	MALWARE_Win_Stealerium Create hunting rule
Author:	ditekSHen
Description:	Detects Stealerium infostealer

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

StealeriumStealer

exe 18cdbd760961bbe45ab6dac098badab8556e5c28cd24744c58f84eb3255da992

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3482372/

Delivery method

Distributed via web download

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 (GUARD_CF)	high
CHECK_TRUST_INFO	Requires Elevated Execution (Unrestricted:true)	high

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