MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 764371ece8ac91f60d259804944c191eab2462d3468e73a35454d96da518bf02. 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 YARA 4 File information Comments

SHA256 hash: 764371ece8ac91f60d259804944c191eab2462d3468e73a35454d96da518bf02
SHA3-384 hash: ef4f0d794b5e334a325374fcc9aa28b25d722be4bac81be1ffdb79e17754ba95882b05794b29b8999afb0850e6257b83
SHA1 hash: 1b2f231e54457b70ec4db0dc828e9f65e35271eb
MD5 hash: d4d2df98497ca423a6d783052fd3f555
humanhash: minnesota-johnny-chicken-purple
File name:file
Download: download sample
Signature Stealc
File size:694'784 bytes
First seen:2024-07-20 20:37:54 UTC
Last seen:2024-07-20 21:38:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f4d7bc3fdef18bca35b7253afc196af9 (11 x Stealc)
ssdeep 12288:368FrOo7YNQcDzdYD/jGW/nSpBvJbkXNpbyk8xslTVex:DxwQiRHW/nSpBv5Q8mZe
TLSH T183E4236C911AD2B0D23079F1444E8B700B1C3E4EA595ED42229F3FE2DA516EEB35E787
TrID 40.5% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
16.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
12.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.0% (.EXE) Win32 Executable (generic) (4504/4/1)
5.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter Bitsight
Tags:exe Stealc


Avatar
Bitsight
url: http://77.91.77.81/stealc/random.exe

Intelligence


File Origin
# of uploads :
16
# of downloads :
426
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
764371ece8ac91f60d259804944c191eab2462d3468e73a35454d96da518bf02.exe
Verdict:
Malicious activity
Analysis date:
2024-07-21 08:36:37 UTC
Tags:
antivm enigma stealc stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
94.9%
Tags:
Execution Generic Infostealer Network Stealth Trojan
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %temp% directory
Connecting to a non-recommended domain
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:
100%
Tags:
enigma lolbin microsoft_visual_cc obfuscated packed packed shell32
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:
Amadey, Babadeda, 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 dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Creates multiple autostart registry keys
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Sample uses string decryption to hide its real strings
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Powershell Download and Execute IEX
Sigma detected: PowerShell Download and Execution Cradles
Sigma detected: Suspicious PowerShell Download and Execute Pattern
Snort IDS alert for network traffic
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
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 Amadeys stealer DLL
Yara detected Babadeda
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1477274 Sample: file.exe Startdate: 20/07/2024 Architecture: WINDOWS Score: 100 112 youtube-ui.l.google.com 2->112 114 www.youtube.com 2->114 116 35 other IPs or domains 2->116 140 Snort IDS alert for network traffic 2->140 142 Multi AV Scanner detection for domain / URL 2->142 144 Found malware configuration 2->144 146 20 other signatures 2->146 9 file.exe 1 37 2->9         started        14 explorti.exe 2->14         started        16 msedge.exe 2->16         started        18 7 other processes 2->18 signatures3 process4 dnsIp5 118 85.28.47.31, 49730, 49841, 49901 GES-ASRU Russian Federation 9->118 120 77.91.77.81, 49731, 49732, 49838 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 9->120 88 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->88 dropped 90 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 9->90 dropped 92 C:\Users\user\AppData\...\mozglue[1].dll, PE32 9->92 dropped 102 11 other files (7 malicious) 9->102 dropped 164 Detected unpacking (changes PE section rights) 9->164 166 Tries to steal Mail credentials (via file / registry access) 9->166 168 Found many strings related to Crypto-Wallets (likely being stolen) 9->168 180 5 other signatures 9->180 20 cmd.exe 1 9->20         started        22 powershell.exe 15 18 9->22         started        122 77.91.77.82, 49837, 49840, 49843 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 14->122 94 C:\Users\user\AppData\Local\Temp\...\go.exe, PE32 14->94 dropped 96 C:\Users\user\AppData\...\8c5821892a.exe, PE32 14->96 dropped 98 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->98 dropped 100 C:\Users\user\AppData\Local\...\go[1].exe, PE32 14->100 dropped 170 Creates multiple autostart registry keys 14->170 172 Hides threads from debuggers 14->172 174 Tries to detect sandboxes / dynamic malware analysis system (registry check) 14->174 176 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 14->176 24 8c5821892a.exe 14->24         started        27 go.exe 14->27         started        124 239.255.255.250 unknown Reserved 16->124 104 2 other malicious files 16->104 dropped 178 Maps a DLL or memory area into another process 16->178 29 msedge.exe 16->29         started        37 6 other processes 16->37 32 firefox.exe 13 226 18->32         started        35 cmd.exe 18->35         started        39 3 other processes 18->39 file6 signatures7 process8 dnsIp9 41 userEHDHDHIECG.exe 4 20->41         started        45 conhost.exe 20->45         started        47 chrome.exe 1 22->47         started        50 msedge.exe 16 22->50         started        52 conhost.exe 22->52         started        54 firefox.exe 1 22->54         started        148 Multi AV Scanner detection for dropped file 24->148 150 Detected unpacking (changes PE section rights) 24->150 152 Contains functionality to detect sleep reduction / modifications 24->152 154 Detected unpacking (overwrites its own PE header) 27->154 56 cmd.exe 27->56         started        126 13.107.21.237 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->126 128 13.107.246.40, 443, 49782, 49783 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->128 134 20 other IPs or domains 29->134 130 services.addons.mozilla.org 18.65.39.31, 443, 49826 MIT-GATEWAYSUS United States 32->130 132 prod.detectportal.prod.cloudops.mozgcp.net 34.107.221.82, 49786, 49787, 49827 GOOGLEUS United States 32->132 136 7 other IPs or domains 32->136 82 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 32->82 dropped 84 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 32->84 dropped 58 2 other processes 32->58 60 4 other processes 35->60 file10 signatures11 process12 dnsIp13 86 C:\Users\user\AppData\Local\...\explorti.exe, PE32 41->86 dropped 156 Antivirus detection for dropped file 41->156 158 Detected unpacking (changes PE section rights) 41->158 160 Machine Learning detection for dropped file 41->160 162 5 other signatures 41->162 62 explorti.exe 41->62         started        138 192.168.2.4, 443, 49672, 49730 unknown unknown 47->138 65 chrome.exe 47->65         started        68 chrome.exe 47->68         started        70 chrome.exe 47->70         started        72 msedge.exe 50->72         started        74 conhost.exe 56->74         started        76 chrome.exe 56->76         started        78 msedge.exe 56->78         started        80 firefox.exe 56->80         started        file14 signatures15 process16 dnsIp17 182 Detected unpacking (changes PE section rights) 62->182 184 Tries to detect sandboxes and other dynamic analysis tools (window names) 62->184 186 Tries to evade debugger and weak emulator (self modifying code) 62->186 188 3 other signatures 62->188 106 play.google.com 142.250.184.238, 443, 49818, 49819 GOOGLEUS United States 65->106 108 www.google.com 142.250.185.164, 443, 49762, 49858 GOOGLEUS United States 65->108 110 4 other IPs or domains 65->110 signatures18
Threat name:
Win32.Trojan.Stealerc
Status:
Malicious
First seen:
2024-07-20 20:38:06 UTC
File Type:
PE (Exe)
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:stealc botnet:default stealer
Behaviour
Suspicious use of SetWindowsHookEx
Stealc
Malware Config
C2 Extraction:
http://85.28.47.31
Unpacked files
SH256 hash:
764371ece8ac91f60d259804944c191eab2462d3468e73a35454d96da518bf02
MD5 hash:
d4d2df98497ca423a6d783052fd3f555
SHA1 hash:
1b2f231e54457b70ec4db0dc828e9f65e35271eb
Detections:
SUSP_XORed_URL_In_EXE
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:EnigmaProtector1XSukhovVladimirSergeNMarkin
Author:malware-lu
Rule name:maldoc_getEIP_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:SUSP_XORed_URL_In_EXE
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834

File information


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

Web download

Stealc

Executable exe 764371ece8ac91f60d259804944c191eab2462d3468e73a35454d96da518bf02

(this sample)

  
Dropped by
Amadey
  
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
Reviews
IDCapabilitiesEvidence
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteA
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryA
WIN_BASE_IO_APICan Create Filesversion.dll::GetFileVersionInfoA

Comments