MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99dfe8a4454f28c944e3c749150aecdaa97e19bcc5a9cf644a509b7eb1d4e50f. 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



Stealc


Vendor detections: 15


Intelligence 15 IOCs 1 YARA 4 File information Comments

SHA256 hash: 99dfe8a4454f28c944e3c749150aecdaa97e19bcc5a9cf644a509b7eb1d4e50f
SHA3-384 hash: 1458e2bfb39f652c20d36b6e243c2fdbf91f574cd9854df6e6ecd93bad6f2b843b170af844933bb04144f9db62d59986
SHA1 hash: 97a493eb8ebcac4fa8f61c357365d443c72e40dc
MD5 hash: 919db35f2bf4dad6dd23e16b68dbb205
humanhash: triple-ack-quebec-kentucky
File name:919db35f2bf4dad6dd23e16b68dbb205.exe
Download: download sample
Signature Stealc
File size:4'173'312 bytes
First seen:2024-06-24 22:55:21 UTC
Last seen:2024-06-24 23:38:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1a5b175c8374e57d652c524ac6f60456 (1 x Stealc)
ssdeep 98304:z8Ho3wEF+ZSxV4CQrRZIfIM8R6nhYufLX6CL2VeUs:z8IqRSxi6dLqi
TLSH T11E1649E1795AF2CFC88A46B4A413CD82BD5C43F546A88902D839757DFE73C9226C6D2C
TrID 27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://85.28.47.4/920475a59bac849d.php

Indicators Of Compromise (IOCs)


Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://85.28.47.4/920475a59bac849d.php https://threatfox.abuse.ch/ioc/1288515/

Intelligence


File Origin
# of uploads :
2
# of downloads :
417
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
99dfe8a4454f28c944e3c749150aecdaa97e19bcc5a9cf644a509b7eb1d4e50f.exe
Verdict:
Malicious activity
Analysis date:
2024-06-24 22:58:18 UTC
Tags:
stealer stealc loader themida

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
60%
Tags:
anti-vm lolbin microsoft_visual_cc msbuild packed packed themidawinlicense xpack
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.
Result
Threat name:
Mars Stealer, Stealc, Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after checking locale)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
PE file contains section with special chars
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Snort IDS alert for network traffic
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Yara detected Mars stealer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
Win32.Spyware.Stealc
Status:
Suspicious
First seen:
2024-06-24 22:56:07 UTC
File Type:
PE (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Verdict:
malicious
Result
Malware family:
Score:
  10/10
Tags:
family:stealc botnet:default discovery evasion spyware stealer themida trojan
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks whether UAC is enabled
Checks BIOS information in registry
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Themida packer
Downloads MZ/PE file
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Stealc
Malware Config
C2 Extraction:
http://85.28.47.4
Unpacked files
SH256 hash:
99dfe8a4454f28c944e3c749150aecdaa97e19bcc5a9cf644a509b7eb1d4e50f
MD5 hash:
919db35f2bf4dad6dd23e16b68dbb205
SHA1 hash:
97a493eb8ebcac4fa8f61c357365d443c72e40dc
Detections:
INDICATOR_EXE_Packed_Themida
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Check_OutputDebugStringA_iat
Rule name:INDICATOR_EXE_Packed_Themida
Author:ditekSHen
Description:Detects executables packed with Themida
Rule name:maldoc_getEIP_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:vmdetect
Author:nex
Description:Possibly employs anti-virtualization techniques

File information


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

Web download

Stealc

Executable exe 99dfe8a4454f28c944e3c749150aecdaa97e19bcc5a9cf644a509b7eb1d4e50f

(this sample)

  
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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical

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