MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5
SHA3-384 hash: bc93e2a306202b4a44202fc6373b1bec08285c22f8692479ec87d216b1edb023fb20eda8bdbd39469cdffb6cf64ee2a2
SHA1 hash: caaa71cdfbc3b33438766aff9bb536422721e5cd
MD5 hash: 73aa6448467db3d1ac25f7e9d8cf1cd4
humanhash: finch-early-item-uncle
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:1'132'544 bytes
First seen:2024-07-16 19:45:29 UTC
Last seen:2024-07-24 19:08:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 24576:tUFuDtv4dsn0Ff5qI/z8L642KlCWZr9zs7wKztmZ7RGP3Wg+8o:tvDtvnn0R5h3cLZ9smNR0W4o
TLSH T15E35337286FC35AFC46BF939AB6EA5467932FC5DB421B9C1A7814C408F115633CE0E21
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 :
456
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6696cdfb1dded92a081f2476win10vpnfull_triage
Tags:
Infostealer Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request to an infection source
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
enigma lolbin microsoft_visual_cc obfuscated packed packed shell32
Link:
https://www.filescan.io/uploads/6696cdfa7b9add553ed5a090/reports/345d4b47-c2ce-4cd3-acbf-f9077d46c0e4/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5
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:
Spark
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f27d9753-f632-4224-987f-1c23d1c1a3e5
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/1474450
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
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 dropped 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 dnsIp2 2 Behavior Graph ID: 1474450 Sample: file.exe Startdate: 16/07/2024 Architecture: WINDOWS Score: 100 80 youtube-ui.l.google.com 2->80 82 www.youtube.com 2->82 84 33 other IPs or domains 2->84 110 Snort IDS alert for network traffic 2->110 112 Found malware configuration 2->112 114 Antivirus detection for URL or domain 2->114 116 15 other signatures 2->116 11 file.exe 36 2->11         started        16 explorti.exe 2->16         started        18 explorti.exe 2->18         started        20 firefox.exe 2->20         started        signatures3 process4 dnsIp5 92 85.28.47.30, 49730, 49745, 80 GES-ASRU Russian Federation 11->92 94 77.91.77.81, 49731, 49744, 49747 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 11->94 62 C:\Users\user\AppData\...\BAAFBFBAAK.exe, PE32 11->62 dropped 64 C:\Users\user\AppData\...\softokn3[1].dll, PE32 11->64 dropped 66 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 11->66 dropped 68 12 other files (8 malicious) 11->68 dropped 118 Detected unpacking (changes PE section rights) 11->118 120 Tries to steal Mail credentials (via file / registry access) 11->120 122 Found many strings related to Crypto-Wallets (likely being stolen) 11->122 136 4 other signatures 11->136 22 cmd.exe 1 11->22         started        24 cmd.exe 2 11->24         started        124 Antivirus detection for dropped file 16->124 126 Tries to detect sandboxes and other dynamic analysis tools (window names) 16->126 128 Machine Learning detection for dropped file 16->128 138 2 other signatures 16->138 130 Hides threads from debuggers 18->130 132 Tries to detect sandboxes / dynamic malware analysis system (registry check) 18->132 134 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 18->134 26 firefox.exe 20->26         started        file6 signatures7 process8 dnsIp9 30 BAAFBFBAAK.exe 4 22->30         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        86 services.addons.mozilla.org 18.66.196.17, 443, 49830 MIT-GATEWAYSUS United States 26->86 88 youtube-ui.l.google.com 172.217.18.14, 443, 49773, 49774 GOOGLEUS United States 26->88 90 9 other IPs or domains 26->90 56 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 26->56 dropped 58 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 26->58 dropped 60 C:\Users\user\AppData\...\places.sqlite-wal, SQLite 26->60 dropped 38 firefox.exe 26->38         started        40 firefox.exe 26->40         started        42 firefox.exe 26->42         started        file10 process11 file12 78 C:\Users\user\AppData\Local\...\explorti.exe, PE32 30->78 dropped 146 Antivirus detection for dropped file 30->146 148 Detected unpacking (changes PE section rights) 30->148 150 Machine Learning detection for dropped file 30->150 152 5 other signatures 30->152 44 explorti.exe 19 30->44         started        signatures13 process14 dnsIp15 96 77.91.77.82, 49743, 49746, 49748 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 44->96 70 C:\Users\user\AppData\...\975283a958.exe, PE32 44->70 dropped 72 C:\Users\user\AppData\...\e471535d2f.exe, PE32 44->72 dropped 74 C:\Users\user\AppData\Local\...\random[1].exe, PE32 44->74 dropped 76 C:\Users\user\AppData\Local\...\random[1].exe, PE32 44->76 dropped 140 Hides threads from debuggers 44->140 142 Tries to detect sandboxes / dynamic malware analysis system (registry check) 44->142 144 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 44->144 49 e471535d2f.exe 12 44->49         started        52 975283a958.exe 1 44->52         started        file16 signatures17 process18 signatures19 98 Antivirus detection for dropped file 49->98 100 Detected unpacking (changes PE section rights) 49->100 102 Machine Learning detection for dropped file 49->102 104 Hides threads from debuggers 49->104 106 Multi AV Scanner detection for dropped file 52->106 108 Binary is likely a compiled AutoIt script file 52->108 54 firefox.exe 52->54         started        process20
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5/
Threat name:
Win32.Trojan.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-07-16 19:46:05 UTC
File Type:
PE (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=smihmwdnkuomzotfgkxlmoj4yzflfeydlrmccjppglt6xaxdwdsq._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-ygyhfsxbkl/
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/23f1f7a4-0f3a-4cd6-a398-0ceca88441d0
Unpacked files
SH256 hash:
931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5
MD5 hash:
73aa6448467db3d1ac25f7e9d8cf1cd4
SHA1 hash:
caaa71cdfbc3b33438766aff9bb536422721e5cd
Detections:
SUSP_XORed_URL_In_EXE
Create hunting rule
Link:
https://www.unpac.me/results/33889b69-032b-4430-ba45-9f967169a93f/
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/931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5

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)
Rule name:SUSP_XORed_URL_In_EXE
Create hunting rule
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
Create hunting rule
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 931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2908698/
  
URLhaus
https://urlhaus.abuse.ch/url/2909129/
  
URLhaus
https://urlhaus.abuse.ch/url/3047209/
  
URLhaus
https://urlhaus.abuse.ch/url/3047215/
  
URLhaus
https://urlhaus.abuse.ch/url/2909131/
  
URLhaus
https://urlhaus.abuse.ch/url/3047216/

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

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