MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 10ecf5b905fb157b49a4e0a7ee2a429fa4f14ba1f5aa83ccfb2fd435826eb371. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments

SHA256 hash: 10ecf5b905fb157b49a4e0a7ee2a429fa4f14ba1f5aa83ccfb2fd435826eb371
SHA3-384 hash: 3955f3550b2be54d7d7f6e0a4595d5a5be8b5af09b65cefa897e729f00d73034fcff97a3485fea66c1b302b28ef194a6
SHA1 hash: 48a682b4a52b8c801548ff5ff9b34917e8569ec8
MD5 hash: 1bc05f08cb54a809b1cd9d7e0c3d6f2b
humanhash: cardinal-princess-pip-bulldog
File name:BestLoader.exe
Download: download sample
Signature Stealc
File size:2'078'720 bytes
First seen:2026-08-11 13:54:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 013c74198fc6e42dcf33737d6c40c012 (13 x Stealc, 11 x RedLineStealer, 4 x NanoCore)
ssdeep 49152:7GbTXKHahFR2zvvRpNVScqDN3Dxu8AWcOSnF:7GbTKHNDvRpzScqDN3D5onF
TLSH T197A53302A3E8049AEE5993355DB6D15663323DDF5B9406CF229BB29A17331C3D83371B
TrID 79.3% (.EXE) Win32 MS Cabinet Self-Extractor (WExtract stub) (303567/2/11)
11.2% (.EXE) InstallShield setup (43053/19/16)
4.3% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
1.7% (.EXE) Win64 Executable (generic) (6522/11/2)
1.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
dhash icon acacac8c1672fb78 (1 x Stealc)
Reporter kejult
Tags:dropper exe Generic packed Stealc trojan

Intelligence


File Origin
# of uploads :
1
# of downloads :
104
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
Archives AutoIt
Details
Malware family:
n/a
ID:
1
File name:
BestLoader.zip
Verdict:
Malicious activity
Analysis date:
2026-08-02 04:15:07 UTC
Tags:
arch-exec autoit generic stealc stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
DNS request
Unauthorized injection to a recently created process
Сreating synchronization primitives
Deleting a recently created file
Connection attempt
Sending an HTTP POST request
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit CAB expired-cert explorer fingerprint installer installer installer-heuristic keylogger lolbin microsoft_visual_cc packed reconnaissance rundll32 runonce sfx
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-08-02T02:13:00Z UTC
Last seen:
2026-08-09T11:57:00Z UTC
Hits:
~100
Gathering data
Threat name:
Win64.Backdoor.Generic
Status:
Suspicious
First seen:
2026-08-02 23:16:24 UTC
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Executes dropped EXE
Unpacked files
SH256 hash:
10ecf5b905fb157b49a4e0a7ee2a429fa4f14ba1f5aa83ccfb2fd435826eb371
MD5 hash:
1bc05f08cb54a809b1cd9d7e0c3d6f2b
SHA1 hash:
48a682b4a52b8c801548ff5ff9b34917e8569ec8
Malware family:
Stealc.v2
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Check_OutputDebugStringA_iat
Rule name:detect_Redline_Stealer
Author:Varp0s
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:VECT_Ransomware
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information


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

Web download

Stealc

Executable exe 10ecf5b905fb157b49a4e0a7ee2a429fa4f14ba1f5aa83ccfb2fd435826eb371

(this sample)

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