MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59
SHA3-384 hash: 7851bfa53f16941d3f3059acf1f29cec3776a558d4fe77cff860dfedfa354f5281a41797e45fbda7ac24df0dee070863
SHA1 hash: ef86e5ed41455861c9604d5e47e919508b7f8880
MD5 hash: b64709413a36f0a4107ff9591841efb0
humanhash: bravo-delaware-fish-wisconsin
File name:b64709413a36f0a4107ff9591841efb0.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:184'320 bytes
First seen:2023-10-22 16:35:55 UTC
Last seen:2023-10-22 19:44:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6ae03e1897875cb6ffee8a530dc88389 (3 x Stealc, 3 x Smoke Loader, 2 x CoinMiner)
ssdeep 3072:AEyBN6fIr6A1scr3xvsAx+EgDudEaKh4oF2UQyx/H23QKxYQX:Qh+A11r31sAxLRdVBFylHR
Threatray 306 similar samples on MalwareBazaar
TLSH T11204BE1076E08072E1A769345970D2A12A3BBCB26B7540CF37983A7E6E703D19F76753
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 e0aca49484a4b0b2 (2 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://wyattsebastian.top/e9c345fc99a4e67e.php

Intelligence

File Origin
# of uploads :
7
# of downloads :
312
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b64709413a36f0a4107ff9591841efb0.exe
Verdict:
Malicious activity
Analysis date:
2023-10-22 16:53:42 UTC
Tags:
stealc stealer
Link:
https://app.any.run/tasks/95c7d64e-ee1a-4832-b02b-d2734dacc369

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.7099.9766.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Launching the default Windows debugger (dwwin.exe)
Gathering data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/65354f734678fc28dfc47a13/reports/40787e46-9a36-48b8-a510-6d095605354a/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59
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:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c4c570a8-d0e6-41aa-b219-88b2f82b0565
Result
Threat name:
Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1330094
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
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 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 domain / URL
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Self deletion via cmd or bat file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
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/bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59
Detection:
stealc
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-22 16:36:06 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
18 of 22 (81.82%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xt2o7ff3ybqdeprbl6pmoz2gbfauvyxbwagvhie65kidifvjzzmq._file
Verdict:
malicious
Similar samples:
026852f32a62ad4182dd36c3b344ebb9eb76f9446cd280eabf342703379968a7
Stealc
2fc2dbfc4d287d1cc2fd6021c2b8285f96b8ae83710a7f6cd301ff53418422f4
Stealc
4a867373dd1a1f97400f342569527b09ff79740d024ede9c6659e8f472e47a30
Stealc
908548cb94a13710b0668aca7ef2045da8ba4443e9edcae7a46e93900856d1a3
Stealc
98e2336afe9aed01d8859c988cb984a017800bf5a5760a643b9f5579c8936e40
Stealc
9c53e9c83f7648eca0e6c9469468fab057a07fbf5d584b9203f9806d6d9540ff
Stealc
a56356f82dc7c482f8c5d394e654b9e3774897c5ce728979d12f4c99555f9a05
Stealc
e8d1c4f4cea682bee4ba4105f14bab0f6bcec51727080e1bc76993fa82f214fa
Stealc
f8820844564b14f463d21641304f68191cd75988aa88406bff0ed876876969e2
Stealc
fa3624f4be5119d36ae2edc33860d829199e79c77c81cb4aa52a2f07b8af5da9
Stealc
+ 296 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc discovery spyware stealer
Link:
https://tria.ge/reports/231022-t39emaaf31/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Stealc
Malware Config
C2 Extraction:
http://wyttsebastian.top
Unpacked files
SH256 hash:
6404566039dd9b30f575283c4de06866086420c91426d47c02d810e77bee1229
MD5 hash:
797506b0d5793118f682b43151b952e1
SHA1 hash:
e7439b91e2c3ca9b471c933955311edbedf6aef2
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/63222e1b-f6b3-476b-b1e8-886904d3d347/
Parent samples :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 hash:
bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59
MD5 hash:
b64709413a36f0a4107ff9591841efb0
SHA1 hash:
ef86e5ed41455861c9604d5e47e919508b7f8880
Link:
https://www.unpac.me/results/63222e1b-f6b3-476b-b1e8-886904d3d347/
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/bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
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:infostealer_win_stealc_standalone
Create hunting rule
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Windows_Trojan_Smokeloader_3687686f
Create hunting rule
Author:Elastic Security
Rule name:win_stealc_w0
Create hunting rule
Author:crep1x
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:yarahub_win_stealc_bytecodes_oct_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Web download

Stealc

Executable exe bcf4ef94bbc060323e215f9ec7674609414ae2e1b00d53a09eea903416a9ce59

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2720398/
  
Delivery method
Distributed via web download

Comments