MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a644caa3a8987c99db378b31626c803d46441ffa2f5b59ab082d127bef809774. 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
RustyStealer
Vendor detections: 13
| SHA256 hash: | a644caa3a8987c99db378b31626c803d46441ffa2f5b59ab082d127bef809774 |
|---|---|
| SHA3-384 hash: | 0b29ba814283a561b6d6504588c61a2250a31c8c22c92fe9a68300bb73c552188ff33c5be47d473d112803b7d6a6890e |
| SHA1 hash: | 6a8452524ac24759f8b267b99858ca20ac9d614c |
| MD5 hash: | 2943100ca3c58044cb6b26950fae1c1d |
| humanhash: | hot-uncle-idaho-saturn |
| File name: | exterial.exe |
| Download: | download sample |
| Signature | RustyStealer |
| File size: | 32'621'056 bytes |
| First seen: | 2026-05-26 17:55:34 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 0bc1b1e557f4a4387777840b7c7925ef (2 x RustyStealer) |
| ssdeep | 393216:QzjNdVptojz5R4hWCs5iYCOLYgCig8sQeNut5AVnDii6Ss1DT9SfhVEBhz:qjNT7ojzIWCahDLBtVbD1DT9SfhMhz |
| Threatray | 223 similar samples on MalwareBazaar |
| TLSH | T1A967F158020CE388785F4636F3D4F83FF2DC25993776E8A9BC39D1DAA412285D2B9587 |
| TrID | 33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| Reporter |  burger |
| Tags: | exe RustyStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
125
Origin country :
DEVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
exterial.exe
Verdict:
No threats detected
Analysis date:
2026-05-26 17:55:18 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Tags:
virus
Result
Verdict:
Malware
Maliciousness:
Behaviour
Launching a process
Reading critical registry keys
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Query of malicious DNS domain
Connection attempt to an infection source
Sending a TCP request to an infection source
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Verdict:
Malicious
Labled as:
Whisperer.1.Generic
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-05-26T15:02:00Z UTC
Last seen:
2026-05-26T18:48:00Z UTC
Hits:
~100
Detections:
Trojan-PSW.Stealer.HTTP.C&C Trojan-Dropper.Win64.Agent.sb PDM:Trojan.Win32.Generic Trojan.Win32.Inject.sb Trojan-PSW.Win64.Stealer.aufi Trojan-PSW.Win32.Stealer.sb Trojan-PSW.Win32.Coins.sb
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
72 / 100
Signature
Antivirus / Scanner detection for submitted sample
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Found direct / indirect Syscall (likely to bypass EDR)
Multi AV Scanner detection for submitted file
Query firmware table information (likely to detect VMs)
Tries to detect virtualization through RDTSC time measurements
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Susipicious
Threat name:
Win64.Spyware.Rustystealer
Status:
Malicious
First seen:
2026-05-26 17:55:05 UTC
File Type:
PE+ (Exe)
Extracted files:
4
AV detection:
15 of 23 (65.22%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
nwhstealer
Similar samples:
+ 213 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Reads user/profile data of web browsers
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | ProgramLanguage_Rust |
|---|---|
| Author: | albertzsigovits |
| Description: | Application written in Rust programming language |
| Rule name: | Rustyloader_mem_loose |
|---|---|
| Author: | James_inthe_box |
| Description: | Corroded buerloader |
| Reference: | https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24 |
| Rule name: | telebot_framework |
|---|---|
| Author: | vietdx.mb |
| 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/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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