MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806
SHA3-384 hash: 423c03bece8775caf5476e5698467e972e7ab5ab4f71edffd91155bde2e8357ec3c8c6e3062edd8f4cb83e5ab7d90003
SHA1 hash: faf07dd14aedc56d9e4826e366c8de9606dddd98
MD5 hash: 7d070c4aed47e3c53aebf3103b312a55
humanhash: london-oregon-nineteen-friend
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:7'162'368 bytes
First seen:2024-03-16 12:25:41 UTC
Last seen:2024-03-16 14:24:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 196608:6HqpcyCoR7n2TPDeiRLbg9Hoen/HpgmpQc:6HcdR7n2TPCiRA9H1n/pgE
Threatray 1 similar samples on MalwareBazaar
TLSH T1E07633324BE4DD22DBF9163BE011EFD013F8EC5C1599B986030C327F4B68A62D56BA65
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 90c7cdf8e2e4761c (2 x LummaStealer, 1 x Stealc, 1 x zgRAT)
Reporter Bitsight
Tags:exe Stealc


Avatar
Bitsight
url: http://unidasg.top/outh.php

Intelligence

File Origin
# of uploads :
3
# of downloads :
345
Origin country :
US US
Vendor Threat Intelligence
Malware family:
redline
Create hunting rule
ID:
1
File name:
6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806.exe
Verdict:
Malicious activity
Analysis date:
2024-03-16 12:27:58 UTC
Tags:
stealer stealc loader redline
Link:
https://app.any.run/tasks/f8947072-998d-4eef-848a-fa6e459b0eed

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/479210/
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.26283.23748.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a window
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65f58fdb1d6034c3c02b66aa/reports/efe83c94-b096-4a47-acf8-37ce801e7517/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806
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:
Unknown
Link:
https://analyze.intezer.com/analyses/a87b3825-bc37-4a8f-90e7-daf11d54bd02
Result
Threat name:
Mars Stealer, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1410143
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after checking locale)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Mars stealer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1410143 Sample: file.exe Startdate: 16/03/2024 Architecture: WINDOWS Score: 100 35 unidasg.top 2->35 37 i.ibb.co 2->37 43 Snort IDS alert for network traffic 2->43 45 Found malware configuration 2->45 47 Yara detected Stealc 2->47 49 7 other signatures 2->49 9 file.exe 15 3 2->9         started        signatures3 process4 dnsIp5 39 i.ibb.co 169.197.85.95, 443, 49729, 49741 PUREVOLTAGE-INCUS United States 9->39 41 8.8.8.8 GOOGLEUS United States 9->41 53 Writes to foreign memory regions 9->53 55 Allocates memory in foreign processes 9->55 57 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->57 59 Injects a PE file into a foreign processes 9->59 13 AddInProcess32.exe 14 3 9->13         started        16 AddInProcess32.exe 25 9->16         started        signatures6 process7 dnsIp8 61 Writes to foreign memory regions 13->61 63 Allocates memory in foreign processes 13->63 65 Found evasive API chain (may stop execution after checking locale) 13->65 69 3 other signatures 13->69 20 InstallUtil.exe 4 13->20         started        33 unidasg.top 195.58.51.48, 49743, 49744, 49745 FIBRENET-ASRU Russian Federation 16->33 25 C:\ProgramData\nss3.dll, PE32 16->25 dropped 27 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 16->27 dropped 29 C:\Users\user\AppData\...\msvcp140[1].dll, PE32 16->29 dropped 31 5 other files (none is malicious) 16->31 dropped 67 Tries to harvest and steal browser information (history, passwords, etc) 16->67 file9 signatures10 process11 signatures12 51 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 20->51 23 conhost.exe 20->23         started        process13
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Suspicious
First seen:
2024-03-16 12:26:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
56
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ni66ysszuretsgbke44kknw6y5lfa2mol5afypvxz546vdq3fada._file
Verdict:
malicious
Similar samples:
69c9f58d670ee63063ad2a580e23f0e1689229cfb3464a46b2d461c0e2c06b3e
Stealc
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:redline family:stealc infostealer spyware stealer
Link:
https://tria.ge/reports/240316-pl6vysah7s/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Loads dropped DLL
Downloads MZ/PE file
RedLine
RedLine payload
Stealc
Malware Config
C2 Extraction:
http://unidasg.top
Unpacked files
SH256 hash:
6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806
MD5 hash:
7d070c4aed47e3c53aebf3103b312a55
SHA1 hash:
faf07dd14aedc56d9e4826e366c8de9606dddd98
Link:
https://www.unpac.me/results/bcfa4f99-d9d8-497b-949e-9442c99e920b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6a3dec4a59a4/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/6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Stealc

Executable exe 6a3dec4a59a44939182a2738a536dec75650698e5f405c3eb7cf79ea8e1b2806

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/479210/
  
URLhaus
https://urlhaus.abuse.ch/url/2784481/

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 (GUARD_CF)high

Comments