MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194. 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: 15


Intelligence 15 IOCs YARA 18 File information Comments
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SHA256 hash: bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194
SHA3-384 hash: e6bfbce43706d662404d40f79adf7095671c14a4d89134979cb89ad2801e6954d11cb92eb7499a04347f01eb73b004f6
SHA1 hash: a3ea45dd1d9fdbaf19c5197ee6515c78168bc4b9
MD5 hash: 189736b36bdf727a34cf673e7797823b
humanhash: king-berlin-green-wisconsin
File name:file
Download: download sample
Signature Stealc
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File size:262'144 bytes
First seen:2023-11-06 14:16:42 UTC
Last seen:2023-11-06 16:13:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 892cf399352d143dfa090ba225b3a97b (2 x MarsStealer, 2 x Smoke Loader, 1 x CoinMiner)
ssdeep 6144:NlL+epunGnKy5a6MlWLuerZDqtJD80VK/o:rvunGnKyyW6eNDqtJDrc
TLSH T120445C0352E17C67E5264B728E2EC2E4771EF9A18F1D77AAF244AA1F15713B1C272702
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0040686a62605200 (1 x Stealc)
Reporter andretavare5
Tags:exe Stealc


Avatar
andretavare5
Sample downloaded from http://5.252.21.48/putty.exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
357
Origin country :
US US
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/458260/
Detection(s):
SecuriteInfo.com.Win32.BotX-gen.2630.677.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connecting to a non-recommended domain
Sending an HTTP GET request
Creating a file
Reading critical registry keys
Sending a custom TCP request
Changing a file
Creating a file in the %AppData% subdirectories
Launching the default Windows debugger (dwwin.exe)
Stealing user critical data
Gathering data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control greyware lolbin packed
Link:
https://www.filescan.io/uploads/6548f566886b1623ff3b32af/reports/b7667b00-a1b9-47c8-a5fb-8bfda12fbb5f/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194
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:
Stealc
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/37a3a70c-88d4-473d-bc0c-7f124375a956
Result
Threat name:
Stealc, Vidar
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1337680
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194/
Threat name:
Win32.Trojan.Privateloader
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Status:
Malicious
First seen:
2023-11-06 14:17:04 UTC
File Type:
PE (Exe)
Extracted files:
46
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xntvrkn44mzths7dyfa4f56jib35s7hslsb6wquczro5zlwmygka._file
Verdict:
malicious
Result
Malware family:
stealc
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Score:
  10/10
Tags:
family:stealc discovery spyware stealer
Link:
https://tria.ge/reports/231106-rlpb1sbf7w/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Stealc
Malware Config
C2 Extraction:
http://91.215.85.189
Unpacked files
SH256 hash:
7e29d1a22cf32c8fb59b6a9f6c0f8121d26038578df2a8f04fa7fe7cee7c9367
MD5 hash:
466b6376d5473a587c5f6b14eddf7a51
SHA1 hash:
256964ca5654f26e768690366d615d03277c826c
Detections:
stealc
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Link:
https://www.unpac.me/results/a6a3d6d0-6a70-4350-82d4-42324f0f6e14/
Parent samples :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 hash:
bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194
MD5 hash:
189736b36bdf727a34cf673e7797823b
SHA1 hash:
a3ea45dd1d9fdbaf19c5197ee6515c78168bc4b9
Link:
https://www.unpac.me/results/a6a3d6d0-6a70-4350-82d4-42324f0f6e14/
Malware family:
Stealc
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb6758a9bce3/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/bb6758a9bce33333cbe3c141c2f7c94077d97cf25c83eb4282cc5ddcaeccc194

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:BitcoinAddress
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Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Check_OutputDebugStringA_iat
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Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Create hunting rule
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of MFA browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Trojan_W32_Gh0stMiancha_1_0_0
Create hunting rule
Rule name:Windows_Trojan_Smokeloader_3687686f
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Smokeloader_ea14b2a5
Create hunting rule
Author:Elastic Security
Rule name:yarahub_win_stealc_bytecodes_oct_2023
Create hunting rule
Author:Matthew @ Embee_Research
Rule name:yara_template
Create hunting rule

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/458260/
  
URLhaus
https://urlhaus.abuse.ch/url/2728133/

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