MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4
SHA3-384 hash: f054b9fe8a21bfb27a08a8fb87adc290a5b5a3b83e215a0166961d08589da548d824e3eb9e6a69cc9c21babbd27d53d4
SHA1 hash: 04adbc1c2fe7633e70d9fc979fadf547248bca1d
MD5 hash: 5e279b51525d6813a8b2e5cd29e7fc7a
humanhash: lake-carolina-earth-friend
File name:file
Download: download sample
Signature MarsStealer
Create hunting rule
File size:2'459'136 bytes
First seen:2024-07-13 22:54:39 UTC
Last seen:2024-07-24 21:36:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 001806c33a6e9fe5fbff34bdbd79b591 (112 x Stealc, 9 x MarsStealer, 1 x Amadey)
ssdeep 49152:oWz5JciZQVK+P7PaWhsTQegLaZqzi3oykzH2aCJ4Xyrb:H5JpKXOaLLabe72a9Xe
TLSH T184B533A27FFFCC32D6C21E35368C15848E4EA477A46ED4B453D994E7C808930E9BD6A4
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 :
12
# of downloads :
374
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4.exe
Verdict:
Malicious activity
Analysis date:
2024-07-13 22:57:56 UTC
Tags:
stealc stealer antivm loader
Link:
https://app.any.run/tasks/0c7ae408-b535-4b11-b4bd-498d86340c65

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:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669305c8da3a746b9a73dddawin7simulatehigh_evasion
Tags:
Stealth
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/669305c898b20a66261cc6e9/reports/1b5d2ccc-766b-4cc2-bd7d-dfeb5611840d/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4
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/555cc166-46f4-4931-923b-b34b25116951
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/1472769
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 dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Potentially malicious time measurement code found
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: 1472769 Sample: file.exe Startdate: 14/07/2024 Architecture: WINDOWS Score: 100 74 youtube-ui.l.google.com 2->74 76 www.youtube.com 2->76 78 33 other IPs or domains 2->78 100 Snort IDS alert for network traffic 2->100 102 Multi AV Scanner detection for domain / URL 2->102 104 Found malware configuration 2->104 106 18 other signatures 2->106 9 file.exe 36 2->9         started        14 explorti.exe 19 2->14         started        16 firefox.exe 1 2->16         started        signatures3 process4 dnsIp5 80 85.28.47.30, 49730, 49746, 80 GES-ASRU Russian Federation 9->80 82 77.91.77.81, 49737, 49744, 49747 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 9->82 50 C:\Users\user\AppData\...\FHCAEGCBFH.exe, PE32 9->50 dropped 52 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->52 dropped 54 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 9->54 dropped 64 12 other files (8 malicious) 9->64 dropped 120 Detected unpacking (changes PE section rights) 9->120 122 Tries to steal Mail credentials (via file / registry access) 9->122 124 Found many strings related to Crypto-Wallets (likely being stolen) 9->124 132 5 other signatures 9->132 18 cmd.exe 1 9->18         started        20 cmd.exe 2 9->20         started        84 77.91.77.82, 49743, 49745, 49748 FOTONTELECOM-TRANSIT-ASFOTONTELECOMISPRU Russian Federation 14->84 56 C:\Users\user\AppData\...\23d383d68e.exe, PE32 14->56 dropped 58 C:\Users\user\AppData\...\1e0a5c72e9.exe, PE32 14->58 dropped 60 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->60 dropped 62 C:\Users\user\AppData\Local\...\random[1].exe, PE32 14->62 dropped 126 Antivirus detection for dropped file 14->126 128 Tries to detect sandboxes and other dynamic analysis tools (window names) 14->128 130 Machine Learning detection for dropped file 14->130 134 4 other signatures 14->134 22 1e0a5c72e9.exe 12 14->22         started        25 23d383d68e.exe 1 14->25         started        27 firefox.exe 210 16->27         started        file6 signatures7 process8 dnsIp9 31 FHCAEGCBFH.exe 4 18->31         started        35 conhost.exe 18->35         started        37 conhost.exe 20->37         started        108 Antivirus detection for dropped file 22->108 110 Multi AV Scanner detection for dropped file 22->110 112 Detected unpacking (changes PE section rights) 22->112 114 Hides threads from debuggers 22->114 116 Binary is likely a compiled AutoIt script file 25->116 118 Machine Learning detection for dropped file 25->118 39 firefox.exe 1 25->39         started        86 services.addons.mozilla.org 18.65.39.85 MIT-GATEWAYSUS United States 27->86 88 youtube-ui.l.google.com 142.250.186.174, 443, 49775, 49776 GOOGLEUS United States 27->88 90 9 other IPs or domains 27->90 66 C:\Users\user\AppData\...\gmpopenh264.dll.tmp, PE32+ 27->66 dropped 68 C:\Users\user\...\gmpopenh264.dll (copy), PE32+ 27->68 dropped 70 C:\Users\user\AppData\...\places.sqlite-wal, SQLite 27->70 dropped 41 firefox.exe 27->41         started        43 firefox.exe 27->43         started        45 firefox.exe 27->45         started        file10 signatures11 process12 file13 72 C:\Users\user\AppData\Local\...\explorti.exe, PE32 31->72 dropped 92 Antivirus detection for dropped file 31->92 94 Detected unpacking (changes PE section rights) 31->94 96 Machine Learning detection for dropped file 31->96 98 6 other signatures 31->98 47 explorti.exe 31->47         started        signatures14 process15 signatures16 136 Hides threads from debuggers 47->136 138 Tries to detect sandboxes / dynamic malware analysis system (registry check) 47->138 140 Tries to detect process monitoring tools (Task Manager, Process Explorer etc.) 47->140
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-07-13 22:55:06 UTC
File Type:
PE (Exe)
AV detection:
21 of 24 (87.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z76o7wr7ggtnx6sgq7sm4fb2d37fu4mi3f3qvtqjicmijtttdssa._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:amadey family:stealc botnet:4dd39d botnet:hate discovery evasion spyware stealer trojan
Link:
https://tria.ge/reports/240713-2v4heasgjc/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
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
Deletes itself
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/6f94d4a2-2b39-418e-bd2c-e6b1a7cb3f56
Unpacked files
SH256 hash:
cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4
MD5 hash:
5e279b51525d6813a8b2e5cd29e7fc7a
SHA1 hash:
04adbc1c2fe7633e70d9fc979fadf547248bca1d
Link:
https://www.unpac.me/results/0d6a103c-4f05-4b4b-a6ed-4ceebb309a2c/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cffcefda3f31/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Mars Stealer
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4

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 cffcefda3f31a6dbfa4687e4ce143a1efe5a7188d9770ace09409884ce731ca4

(this sample)

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

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