MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c9155f89c82b6043a474addbc6afd42ea2fd30c242fcb99266fbf0b6b94ec4ed. 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: 16


Intelligence 16 IOCs YARA 1 File information Comments

SHA256 hash: c9155f89c82b6043a474addbc6afd42ea2fd30c242fcb99266fbf0b6b94ec4ed
SHA3-384 hash: c44ede526aa085ad1f9d1c9828faf18e004977468b691b990ed778d2ef47373a4ddaef6de3ead9106ae8479ec04a8e41
SHA1 hash: 22c5c1c8ee8aaa7a9e7ea7bd9ef3192f662e8b72
MD5 hash: c6af01962d0de9d10623edafbddce24c
humanhash: skylark-double-east-angel
File name:file
Download: download sample
Signature Stealc
File size:2'450'944 bytes
First seen:2024-07-08 00:12:58 UTC
Last seen:2024-07-08 01:04:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 49152:YkI1MLbjnXAsJ1aeuD4BBLQeXc4GVGh8uqEVUMwzImEFv0cu1hrPO:YdwbjX7JsXD4BlZsYlUBIlcP
TLSH T166B5333459D7AECBF003977EF361273F08986B35AE5E1483BC523842817198A0AF3E59
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 :
6
# of downloads :
552
Origin country :
US US
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
c9155f89c82b6043a474addbc6afd42ea2fd30c242fcb99266fbf0b6b94ec4ed.exe
Verdict:
Malicious activity
Analysis date:
2024-07-08 00:14:17 UTC
Tags:
stealc stealer antivm loader amadey botnet themida

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
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, 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
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 sample
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
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 Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1468829 Sample: file.exe Startdate: 08/07/2024 Architecture: WINDOWS Score: 100 112 youtube-ui.l.google.com 2->112 114 www.youtube.com 2->114 116 28 other IPs or domains 2->116 136 Snort IDS alert for network traffic 2->136 138 Found malware configuration 2->138 140 Antivirus detection for URL or domain 2->140 142 13 other signatures 2->142 9 file.exe 37 2->9         started        14 explorti.exe 19 2->14         started        16 msedge.exe 2->16         started        18 firefox.exe 2->18         started        signatures3 process4 dnsIp5 118 85.28.47.30, 49704, 49721, 80 GES-ASRU Russian Federation 9->118 120 77.91.77.81, 49712, 49720, 49723 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 9->120 76 C:\Users\user\AppData\...\HDBKJEGIEB.exe, PE32 9->76 dropped 78 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->78 dropped 80 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 9->80 dropped 92 12 other files (4 malicious) 9->92 dropped 158 Detected unpacking (changes PE section rights) 9->158 160 Tries to steal Mail credentials (via file / registry access) 9->160 162 Found many strings related to Crypto-Wallets (likely being stolen) 9->162 170 4 other signatures 9->170 20 cmd.exe 1 9->20         started        22 cmd.exe 2 9->22         started        122 77.91.77.82, 49719, 49722, 49724 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 14->122 82 C:\Users\user\AppData\...\71f91be79d.exe, PE32 14->82 dropped 84 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->84 dropped 164 Hides threads from debuggers 14->164 166 Tries to detect sandboxes / dynamic malware analysis system (registry check) 14->166 168 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 14->168 24 71f91be79d.exe 12 14->24         started        27 cmd.exe 1 14->27         started        86 topTraffic_1705401...0506234197983529371, data 16->86 dropped 88 C:\Users\user\AppData\Local\...\topTraffic, ASCII 16->88 dropped 90 C:\Users\user\AppData\Local\...\History, SQLite 16->90 dropped 29 msedge.exe 16->29         started        33 msedge.exe 16->33         started        35 msedge.exe 16->35         started        39 3 other processes 16->39 37 firefox.exe 18->37         started        file6 signatures7 process8 dnsIp9 41 HDBKJEGIEB.exe 4 20->41         started        45 conhost.exe 20->45         started        47 conhost.exe 22->47         started        144 Multi AV Scanner detection for dropped file 24->144 146 Detected unpacking (changes PE section rights) 24->146 148 Hides threads from debuggers 24->148 49 chrome.exe 27->49         started        52 msedge.exe 27->52         started        54 conhost.exe 27->54         started        56 firefox.exe 27->56         started        124 13.107.246.40, 443, 49790, 49793 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->124 126 204.79.197.200, 443, 49789 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->126 132 16 other IPs or domains 29->132 94 C:\Users\user\AppData\Local\...\Cookies, SQLite 29->94 dropped 128 172.217.16.206, 443, 49756, 49757 GOOGLEUS United States 37->128 130 prod.detectportal.prod.cloudops.mozgcp.net 34.107.221.82, 49759, 49777, 49800 GOOGLEUS United States 37->130 134 9 other IPs or domains 37->134 96 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 37->96 dropped 98 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 37->98 dropped 100 C:\Users\user\AppData\...\places.sqlite-wal, SQLite 37->100 dropped 58 firefox.exe 37->58         started        60 2 other processes 37->60 file10 signatures11 process12 dnsIp13 74 C:\Users\user\AppData\Local\...\explorti.exe, PE32 41->74 dropped 150 Detected unpacking (changes PE section rights) 41->150 152 Tries to evade debugger and weak emulator (self modifying code) 41->152 154 Tries to detect virtualization through RDTSC time measurements 41->154 156 3 other signatures 41->156 62 explorti.exe 41->62         started        102 192.168.2.5, 443, 49703, 49704 unknown unknown 49->102 104 239.255.255.250 unknown Reserved 49->104 65 chrome.exe 49->65         started        68 chrome.exe 49->68         started        70 chrome.exe 49->70         started        72 msedge.exe 52->72         started        file14 signatures15 process16 dnsIp17 172 Detected unpacking (changes PE section rights) 62->172 174 Tries to detect sandboxes and other dynamic analysis tools (window names) 62->174 176 Tries to evade debugger and weak emulator (self modifying code) 62->176 178 3 other signatures 62->178 106 www3.l.google.com 142.250.185.238, 443, 49815 GOOGLEUS United States 65->106 108 youtube-ui.l.google.com 142.250.186.110, 443, 49729 GOOGLEUS United States 65->108 110 4 other IPs or domains 65->110 signatures18
Threat name:
Win32.Spyware.Stealc
Status:
Suspicious
First seen:
2024-07-08 00:13:06 UTC
File Type:
PE (Exe)
AV detection:
22 of 24 (91.67%)
Threat level:
  2/5
Verdict:
malicious
Result
Malware family:
Score:
  10/10
Tags:
family:amadey family:stealc botnet:4dd39d botnet:nice discovery evasion spyware stealer trojan
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info 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
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:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
c9155f89c82b6043a474addbc6afd42ea2fd30c242fcb99266fbf0b6b94ec4ed
MD5 hash:
c6af01962d0de9d10623edafbddce24c
SHA1 hash:
22c5c1c8ee8aaa7a9e7ea7bd9ef3192f662e8b72
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:maldoc_getEIP_method_1
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 c9155f89c82b6043a474addbc6afd42ea2fd30c242fcb99266fbf0b6b94ec4ed

(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
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