MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc
SHA3-384 hash: 536e397b6e5b41ba95b2ae707eeaa1688e7956a818c70cc90625165cfcfbb6241a3b18c774eae23ed1d8bae15a366c6e
SHA1 hash: d671d93d15b4408119403a6c0b7268bd08b46b99
MD5 hash: 98a3be9edc1d95d06e572a847e18de0d
humanhash: thirteen-edward-twelve-missouri
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:2'506'752 bytes
First seen:2024-07-16 07:08:30 UTC
Last seen:2024-07-24 15:15:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 49152:kLSz2AZbEBiuxLtmppSwENr6dDYPLdo+gJnldubmrb81bv5nN:mBiILtmTcI4ORldubmnsRN
TLSH T1B7C5334A81A105A4C014203C775569F82ADABF047D76F5FCB80A0A676B9FA8377CF17E
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 Bitsight
Tags:exe Stealc


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

Intelligence

File Origin
# of uploads :
16
# of downloads :
411
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc.exe
Verdict:
Malicious activity
Analysis date:
2024-07-16 07:30:37 UTC
Tags:
stealer stealc
Link:
https://app.any.run/tasks/dd7f8d89-41e3-4a58-9563-2addb003d170

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Verdict:
Clean
Score:
89.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66961c8fcadc6250d05567f6win10vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
enigma lolbin microsoft_visual_cc packed packed shell32
Link:
https://www.filescan.io/uploads/66961c934cee8c9113b69973/reports/42adb7fc-b891-417a-bb5f-7c75f5e584ef/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2f5b251a-5c9c-4a05-913c-1469654185b6
Result
Threat name:
Amadey, Mars Stealer, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1474043
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
Detected unpacking (changes PE section rights)
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
Multi AV Scanner detection for domain / URL
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
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 Mars stealer
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1474043 Sample: file.exe Startdate: 16/07/2024 Architecture: WINDOWS Score: 100 49 Snort IDS alert for network traffic 2->49 51 Multi AV Scanner detection for domain / URL 2->51 53 Found malware configuration 2->53 55 16 other signatures 2->55 8 file.exe 37 2->8         started        13 explorti.exe 2->13         started        15 explorti.exe 2->15         started        process3 dnsIp4 43 85.28.47.30, 49710, 80 GES-ASRU Russian Federation 8->43 45 77.91.77.81, 49713, 80 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 8->45 35 C:\Users\user\AppData\...\IIDHJDGCGD.exe, PE32 8->35 dropped 37 C:\Users\user\AppData\...\softokn3[1].dll, PE32 8->37 dropped 39 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 8->39 dropped 41 11 other files (7 malicious) 8->41 dropped 65 Detected unpacking (changes PE section rights) 8->65 67 Tries to steal Mail credentials (via file / registry access) 8->67 69 Found many strings related to Crypto-Wallets (likely being stolen) 8->69 77 4 other signatures 8->77 17 cmd.exe 1 8->17         started        19 cmd.exe 2 8->19         started        71 Hides threads from debuggers 13->71 73 Tries to detect sandboxes / dynamic malware analysis system (registry check) 13->73 75 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 13->75 file5 signatures6 process7 process8 21 IIDHJDGCGD.exe 4 17->21         started        25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        file9 33 C:\Users\user\AppData\Local\...\explorti.exe, PE32 21->33 dropped 57 Antivirus detection for dropped file 21->57 59 Detected unpacking (changes PE section rights) 21->59 61 Machine Learning detection for dropped file 21->61 63 5 other signatures 21->63 29 explorti.exe 12 21->29         started        signatures10 process11 dnsIp12 47 77.91.77.82, 49725, 49726, 49727 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 29->47 79 Antivirus detection for dropped file 29->79 81 Detected unpacking (changes PE section rights) 29->81 83 Tries to detect sandboxes and other dynamic analysis tools (window names) 29->83 85 5 other signatures 29->85 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc/
Threat name:
Win32.Trojan.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-07-16 07:09:07 UTC
File Type:
PE (Exe)
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3z2xhq6zillzfy7xgvasq2nuy4uuxu6v4xnydadazbwwjnwzt6a._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:amadey family:stealc botnet:4dd39d botnet:funny discovery evasion spyware stealer trojan
Link:
https://tria.ge/reports/240716-hyserstaqb/
Behaviour
Checks processor information in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in Windows directory
AutoIT Executable
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Identifies Wine through registry keys
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Amadey
Stealc
Malware Config
C2 Extraction:
http://85.28.47.30
http://77.91.77.82
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4f53d8a5-89d3-404d-9bdb-1c18b2a1bedc
Unpacked files
SH256 hash:
66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc
MD5 hash:
98a3be9edc1d95d06e572a847e18de0d
SHA1 hash:
d671d93d15b4408119403a6c0b7268bd08b46b99
Link:
https://www.unpac.me/results/8cba860b-0ea5-4cb0-b843-2e27b796f17a/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66f3ab9e1eca/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc

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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)

File information

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

Web download

Stealc

Executable exe 66f3ab9e1eca16bc971fb9aa09434da6394a5e9eaf2edc0c0306436b25b6ccfc

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2909131/
  
URLhaus
https://urlhaus.abuse.ch/url/2909129/
  
URLhaus
https://urlhaus.abuse.ch/url/2908698/

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
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