MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb7f4e286a4a8fdfa525168591131d37019090d94040feb13c8078c4a7ae4b37. 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: 13

Intelligence 13 IOCs YARA 6 File information Comments

SHA256 hash:	cb7f4e286a4a8fdfa525168591131d37019090d94040feb13c8078c4a7ae4b37
SHA3-384 hash:	ef0c6580acdb997b05a277457250339db9048ff38b41cd946ea1743bb316d19c9eeeca907bc868c6ee9054b1b2891cba
SHA1 hash:	257518ece774da6ba53ca070121a206519f0c229
MD5 hash:	84f304e30439cf1f837ed4f31c1fbb28
humanhash:	ohio-robin-nebraska-lake
File name:	84f304e30439cf1f837ed4f31c1fbb28.exe
Download:	download sample
Signature	Stealc Create hunting rule
File size:	297'472 bytes
First seen:	2023-05-28 07:20:21 UTC
Last seen:	2023-05-28 08:44:18 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	d683fcb523ac92743f5db043ced73806 (2 x Smoke Loader, 2 x Stealc, 1 x Stop)
ssdeep	3072:Ad9jDaSlXbBp6mLpIlYUEjOyv+L5bIWw7az/5QtGvAUd:qDakXmmL0CuLhIPtI
Threatray	231 similar samples on MalwareBazaar
TLSH	T1DB542A0396E2FC50ED668A729E2FC6EC779EF5508E19775A2118AE1F0C702B2D173712
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):
dhash icon	8080c4c48488c848 (1 x Stealc)
Reporter	abuse_ch
Tags:	exe Stealc

Intelligence

File Origin

# of uploads :

# of downloads :

248

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

84f304e30439cf1f837ed4f31c1fbb28.exe

Verdict:

Malicious activity

Analysis date:

2023-05-28 07:20:40 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/c0dade22-0013-4f3b-9c13-e5f7d1ad132a

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/392722/

Detection(s):

Win.Packer.pkr_ce1a-9980177-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

DNS request

Sending an HTTP GET request

Creating a file

Reading critical registry keys

Changing a file

Creating a file in the %AppData% subdirectories

Creating a window

Running batch commands

Creating a process with a hidden window

Searching for synchronization primitives

Launching a process

Launching the default Windows debugger (dwwin.exe)

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

greyware packed xpack

Link:

https://www.filescan.io/uploads/647300e1551c737d52c06b99/reports/8ff65056-10d6-4ace-ba55-90d8a15f97ad/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/cb7f4e286a4a8fdfa525168591131d37019090d94040feb13c8078c4a7ae4b37

Result

Verdict:

UNKNOWN

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

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/5db57837-6bed-4933-b6c2-8c1b5435ebc4

Result

Threat name:

Stealc, Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1243982

Signature

Antivirus detection for URL or domain

Detected unpacking (changes PE section rights)

Detected unpacking (overwrites its own PE header)

Found evasive API chain (may stop execution after checking locale)

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

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

Yara detected Stealc

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/cb7f4e286a4a8fdfa525168591131d37019090d94040feb13c8078c4a7ae4b37/

Threat name:

Win32.Trojan.Privateloader

Status:

Malicious

First seen:

2023-05-27 14:56:11 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

28 of 37 (75.68%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zn7u4kdkjkh57jjfc2czcey5g4azbegzibap5mj4qb4mjj5ojm3q._file

Verdict:

malicious

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc discovery spyware stealer

Link:

https://tria.ge/reports/230528-h6nfsaee65/

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

Detects Stealc stealer

Stealc

Gathering data

Malware family:

Stealc

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cb7f4e286a4a/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/cb7f4e286a4a8fdfa525168591131d37019090d94040feb13c8078c4a7ae4b37

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:	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:	pdb_YARAify Create hunting rule
Author:	@wowabiy314
Description:	PDB

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	Windows_Trojan_Smokeloader_3687686f Create hunting rule
Author:	Elastic Security

Rule name:	win_stealc_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.stealc.

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/