MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca. 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: 17


Intelligence 17 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca
SHA3-384 hash: 49742ac6b885f81fdde91d641cdde1614f2225c5256527dca049c1867b47ae05062ba355a1de380ea932eff56513d935
SHA1 hash: 410ba11d1025142dcd2238e7c4e905a543fafdd6
MD5 hash: 9ab68ef496dc8989b5cc7f5397298529
humanhash: tango-thirteen-magazine-utah
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:1'128'960 bytes
First seen:2024-07-17 03:57:38 UTC
Last seen:2024-07-24 18:03:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 24576:B3eWhI+8Km/oikwjmZM2wv3bHi2ZdiXxWTpvFInaqLMxx:B3eWCkHm2wv3bCSdiXUFvFIxAj
Threatray 160 similar samples on MalwareBazaar
TLSH T1873533132B6FDB1EE3C5E1B83435882E3EE99EB565C1D33059078E15E1261739F428DA
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 :
17
# of downloads :
402
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Win.Malware.Bulz-9854835-0
Create hunting rule

PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6697414c4de77648397b702b
Tags:
Infostealer Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
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 obfuscated packed packed shell32
Link:
https://www.filescan.io/uploads/6697414bcbb32227b6a829a2/reports/43fd6ec0-844d-4b35-ac6f-8082595ad338/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca
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/7f37e164-c19f-4d03-9ddd-672c93e27ccb
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/1474619
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 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 dnsIp2 2 Behavior Graph ID: 1474619 Sample: file.exe Startdate: 17/07/2024 Architecture: WINDOWS Score: 100 71 youtube-ui.l.google.com 2->71 73 www.youtube.com 2->73 75 33 other IPs or domains 2->75 89 Snort IDS alert for network traffic 2->89 91 Multi AV Scanner detection for domain / URL 2->91 93 Found malware configuration 2->93 95 17 other signatures 2->95 11 file.exe 36 2->11         started        16 explorti.exe 2->16         started        18 firefox.exe 2->18         started        signatures3 process4 dnsIp5 85 85.28.47.30, 49730, 49747, 80 GES-ASRU Russian Federation 11->85 87 77.91.77.81, 49731, 49745, 49748 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 11->87 63 C:\Users\user\AppData\...\BAKEBFBAKK.exe, PE32 11->63 dropped 65 C:\Users\user\AppData\...\softokn3[1].dll, PE32 11->65 dropped 67 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 11->67 dropped 69 12 other files (8 malicious) 11->69 dropped 113 Detected unpacking (changes PE section rights) 11->113 115 Tries to steal Mail credentials (via file / registry access) 11->115 117 Found many strings related to Crypto-Wallets (likely being stolen) 11->117 125 4 other signatures 11->125 20 cmd.exe 1 11->20         started        22 cmd.exe 2 11->22         started        119 Hides threads from debuggers 16->119 121 Tries to detect sandboxes / dynamic malware analysis system (registry check) 16->121 123 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 16->123 24 firefox.exe 18->24         started        file6 signatures7 process8 dnsIp9 27 BAKEBFBAKK.exe 4 20->27         started        31 conhost.exe 20->31         started        33 conhost.exe 22->33         started        77 youtube-ui.l.google.com 142.250.185.238, 443, 49773, 49776 GOOGLEUS United States 24->77 79 prod.detectportal.prod.cloudops.mozgcp.net 34.107.221.82, 49775, 49782, 49788 GOOGLEUS United States 24->79 81 9 other IPs or domains 24->81 35 firefox.exe 24->35         started        37 firefox.exe 24->37         started        39 firefox.exe 24->39         started        process10 file11 61 C:\Users\user\AppData\Local\...\explorti.exe, PE32 27->61 dropped 105 Antivirus detection for dropped file 27->105 107 Detected unpacking (changes PE section rights) 27->107 109 Machine Learning detection for dropped file 27->109 111 5 other signatures 27->111 41 explorti.exe 19 27->41         started        signatures12 process13 dnsIp14 83 77.91.77.82, 49744, 49746, 49749 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 41->83 53 C:\Users\user\AppData\...\e525950903.exe, PE32 41->53 dropped 55 C:\Users\user\AppData\...\178d56a5ae.exe, PE32 41->55 dropped 57 C:\Users\user\AppData\Local\...\random[1].exe, PE32 41->57 dropped 59 C:\Users\user\AppData\Local\...\random[1].exe, PE32 41->59 dropped 97 Antivirus detection for dropped file 41->97 99 Detected unpacking (changes PE section rights) 41->99 101 Tries to detect sandboxes and other dynamic analysis tools (window names) 41->101 103 6 other signatures 41->103 46 178d56a5ae.exe 12 41->46         started        49 e525950903.exe 1 41->49         started        file15 signatures16 process17 signatures18 127 Antivirus detection for dropped file 46->127 129 Detected unpacking (changes PE section rights) 46->129 131 Machine Learning detection for dropped file 46->131 133 Hides threads from debuggers 46->133 135 Binary is likely a compiled AutoIt script file 49->135 51 firefox.exe 1 49->51         started        process19
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca/
Threat name:
Win32.Trojan.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-07-17 03:58:06 UTC
File Type:
PE (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rctt6ylqokzrt7mhzphbucduy4c66b37zqf3bgtqg74xmi3iudfa._file
Verdict:
malicious
Similar samples:
04a4ed789f8a254681cc65fe7361660373cc8a37b66992979c916bf4f990c8b9
Stealc
075d28e2085d06b4d1e8fc60e3ee784495bebb37e8c3b0c38fbb047138cbf374
Stealc
931076586d551cccba6532aeb6393cc64ab293035c582125ef32e7eb82e3b0e5
Stealc
a84519749f8ad340ae767ffce46acc77280b130fcf079a0a089a18f1428dc747
Stealc
b8e467f289aaf7e2328c24b98415ab9102bad8bd92100624643cf904c1979668
Stealc
e661bbdfc6c48109780e82bdc2c50399a75a95ea93aa265b1273878fda825368
Stealc
+ 150 additional samples on MalwareBazaar
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/240717-ejg4psvdpk/
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/69710311-3765-4b4a-b85f-5afbc456575a
Unpacked files
SH256 hash:
88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca
MD5 hash:
9ab68ef496dc8989b5cc7f5397298529
SHA1 hash:
410ba11d1025142dcd2238e7c4e905a543fafdd6
Detections:
SUSP_XORed_URL_In_EXE
Create hunting rule
Link:
https://www.unpac.me/results/5969ba0b-e379-458b-bb0f-020f0a204d38/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/88a73f617072/report/overview.html
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/88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca

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 88a73f617072b319fd87cbce1a0874c705ef077fcc0bb09a7037f9762368a0ca

(this sample)

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

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