MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a
SHA3-384 hash: d861ad82a5e010a282703b02125dae08d136b5ed46fb9a45f607f6add448652f8d7752e6be8badd31779aa96709e4b9e
SHA1 hash: bbba72ec8a45a8c3b482ce9d6d67b4d2c056a0cc
MD5 hash: 33fee18aea4ac1d36a0f0d2b5f890c47
humanhash: island-uranus-ten-quebec
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:201'728 bytes
First seen:2024-08-20 10:38:06 UTC
Last seen:2024-08-20 10:51:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:2fm3iYZHRzam+RCY/dm9D5ZVuydmWI6Avqo2rYGTCGGFvzivi34ehx/2kons9:53iqHB6RfohVDsWIzqhXtYvP4ux+n
TLSH T1E814230557DE1C7EE1F88F3BAC9538086913B6E08463852AE4E22EB7A5A551283137FD
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter Bitsight
Tags:exe Stealc


Avatar
Bitsight
url: http://31.41.244.11/steam/random.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
427
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-08-20 10:39:44 UTC
Tags:
stealer stealc
Link:
https://app.any.run/tasks/5ed30287-1b55-4282-b61a-a5770c0be47b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Stealerc-10034897-0
Create hunting rule

Win.Malware.Crypterx-10034898-0
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66c47247e7ff3f5a063b993c
Tags:
Banker Encryption Execution Generic Network Static Stealth Dexter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66c47247a11c1113d5d1edb6/reports/a4cd0a8a-3ff1-4153-bfc5-a7b86867737c/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/084d47fd-0b43-45a6-baf1-95cd336f04a4
Result
Threat name:
Stealc
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1495559
Signature
.NET source code contains very large array initializations
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Suricata IDS alerts for network traffic
Writes to foreign memory regions
Yara detected Powershell download and execute
Yara detected Stealc
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a/
Threat name:
ByteCode-MSIL.Trojan.StealC
Create hunting rule
Status:
Malicious
First seen:
2024-08-20 10:39:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wioyov5dl6uu2n6omyzzghtqxfkr5mrqoo2fvdw2xygothlf2yna._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc botnet:nord discovery stealer
Link:
https://tria.ge/reports/240820-mpybwaxbna/
Behaviour
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Stealc
Malware Config
C2 Extraction:
http://185.215.113.100
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/caff4329-229f-4022-aa4c-c312e308e958
Unpacked files
SH256 hash:
bb6b16910a44ae7bd5fda3378b9888f4b37849d2b86ac3260af990b3b566c6fa
MD5 hash:
3df4d0ee10c4b97945152a37a68f1a84
SHA1 hash:
835fea622a93f8eb63e3c497c695a9be4a03848e
Detections:
stealc
Create hunting rule
Link:
https://www.unpac.me/results/b21bb8da-c16a-412c-902f-868582b6893e/
Parent samples :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 hash:
b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a
MD5 hash:
33fee18aea4ac1d36a0f0d2b5f890c47
SHA1 hash:
bbba72ec8a45a8c3b482ce9d6d67b4d2c056a0cc
Link:
https://www.unpac.me/results/b21bb8da-c16a-412c-902f-868582b6893e/
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/b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a

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 b21d8757a35fa94d37ce6633931e70b9551eb23073b45a8edabe0ce99d65d61a

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download

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