MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0. 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


MarsStealer


Vendor detections: 16


Intelligence 16 IOCs YARA 1 File information Comments
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SHA256 hash: 73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0
SHA3-384 hash: be24af1830b26c671c5f8ad29c584f22162c81c06be94b18c628e807259a1034eeda7b56c295092749911c2e1098f07a
SHA1 hash: 8c801d339f44014ba6be70075125aef1f713546c
MD5 hash: cdee5e5fc7ed717bfa4d6d70fa5ec427
humanhash: berlin-spring-winner-oregon
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:2'536'448 bytes
First seen:2024-07-15 18:46:53 UTC
Last seen:2024-07-24 16:08:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 49152:XVtMkRVZ8eMdCRN6+tLMFwEYMr+WRSAhwmWsZFnz1DQwBX+0lP:ltMORNntQFrZNSLix8wBXd
TLSH T199C5331CDBCD59FAE39EB333A5263E25E442F44BC782B415A14C82AF410669B17ADB34
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 MarsStealer


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

Intelligence

File Origin
# of uploads :
15
# of downloads :
406
Origin country :
US US
Vendor Threat Intelligence
Malware family:
amadey
Create hunting rule
ID:
1
File name:
73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0.exe
Verdict:
Malicious activity
Analysis date:
2024-07-15 18:52:50 UTC
Tags:
stealer stealc loader antivm amadey botnet themida
Link:
https://app.any.run/tasks/5c68bc97-3092-4a95-b273-1d426071875f

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:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66956ea784e955866872b8e3win7simulatehigh_evasion
Tags:
n/a
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 packed packed shell32
Link:
https://www.filescan.io/uploads/66956ea89375ba181fffe5fb/reports/59058f04-874a-495b-b6ed-388d1f3c6411/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0
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/9368ee4c-b9c6-4956-846e-1285f8df0a7b
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/1473773
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: 1473773 Sample: file.exe Startdate: 15/07/2024 Architecture: WINDOWS Score: 100 73 youtube-ui.l.google.com 2->73 75 www.youtube.com 2->75 77 33 other IPs or domains 2->77 107 Snort IDS alert for network traffic 2->107 109 Found malware configuration 2->109 111 Antivirus detection for URL or domain 2->111 113 15 other signatures 2->113 9 file.exe 37 2->9         started        14 explorti.exe 19 2->14         started        16 firefox.exe 2->16         started        signatures3 process4 dnsIp5 79 85.28.47.30, 49704, 49720, 80 GES-ASRU Russian Federation 9->79 81 77.91.77.81, 49712, 49719, 49722 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 9->81 51 C:\Users\user\AppData\...\HIDGCFBFBF.exe, PE32 9->51 dropped 53 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->53 dropped 55 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 9->55 dropped 65 12 other files (8 malicious) 9->65 dropped 127 Detected unpacking (changes PE section rights) 9->127 129 Tries to steal Mail credentials (via file / registry access) 9->129 131 Found many strings related to Crypto-Wallets (likely being stolen) 9->131 139 5 other signatures 9->139 18 cmd.exe 1 9->18         started        20 cmd.exe 2 9->20         started        83 77.91.77.82, 49718, 49721, 49723 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 14->83 57 C:\Users\user\AppData\...\4ebad6e04c.exe, PE32 14->57 dropped 59 C:\Users\user\AppData\...\6ee1e6b2f3.exe, PE32 14->59 dropped 61 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->61 dropped 63 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->63 dropped 133 Antivirus detection for dropped file 14->133 135 Tries to detect sandboxes and other dynamic analysis tools (window names) 14->135 137 Machine Learning detection for dropped file 14->137 141 4 other signatures 14->141 22 6ee1e6b2f3.exe 12 14->22         started        25 4ebad6e04c.exe 1 14->25         started        27 firefox.exe 16->27         started        file6 signatures7 process8 dnsIp9 31 HIDGCFBFBF.exe 4 18->31         started        35 conhost.exe 18->35         started        37 conhost.exe 20->37         started        115 Antivirus detection for dropped file 22->115 117 Detected unpacking (changes PE section rights) 22->117 119 Machine Learning detection for dropped file 22->119 121 Hides threads from debuggers 22->121 123 Multi AV Scanner detection for dropped file 25->123 125 Binary is likely a compiled AutoIt script file 25->125 39 firefox.exe 25->39         started        87 services.addons.mozilla.org 18.65.39.4, 443, 49805 MIT-GATEWAYSUS United States 27->87 89 youtube-ui.l.google.com 216.58.212.142, 443, 49748, 49749 GOOGLEUS United States 27->89 91 9 other IPs or domains 27->91 67 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 27->67 dropped 69 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 27->69 dropped 41 firefox.exe 27->41         started        44 firefox.exe 27->44         started        46 firefox.exe 27->46         started        file10 signatures11 process12 dnsIp13 71 C:\Users\user\AppData\Local\...\explorti.exe, PE32 31->71 dropped 93 Antivirus detection for dropped file 31->93 95 Detected unpacking (changes PE section rights) 31->95 97 Machine Learning detection for dropped file 31->97 99 5 other signatures 31->99 48 explorti.exe 31->48         started        85 prod.balrog.prod.cloudops.mozgcp.net 41->85 file14 signatures15 process16 signatures17 101 Hides threads from debuggers 48->101 103 Tries to detect sandboxes / dynamic malware analysis system (registry check) 48->103 105 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 48->105
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0/
Threat name:
Win32.Trojan.Stealerc
Create hunting rule
Status:
Malicious
First seen:
2024-07-15 18:47:06 UTC
File Type:
PE (Exe)
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oppr2bkdvjusa5nfagvys6eszpqmxmqk6uyedymzpbr33l5mhoqa._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/240715-xe665stgrp/
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/c105f5ee-c0eb-4611-9000-cdcbe96f7e2a
Unpacked files
SH256 hash:
73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0
MD5 hash:
cdee5e5fc7ed717bfa4d6d70fa5ec427
SHA1 hash:
8c801d339f44014ba6be70075125aef1f713546c
Link:
https://www.unpac.me/results/89ce7ae6-c203-4a92-9d2b-66b6ea40a123/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/73df1d0543aa/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/73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0

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

MarsStealer

Executable exe 73df1d0543aa692075a501ab897892cbe0cbb20af53041e1997863bdafac3ba0

(this sample)

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

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