MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4a41291979ce387fd5470ad5afd9db2938669d813f7da7f43dd9f53413457399. 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: 9
| SHA256 hash: | 4a41291979ce387fd5470ad5afd9db2938669d813f7da7f43dd9f53413457399 |
|---|---|
| SHA3-384 hash: | 208ec8367ea29bc2ffcd9ad7e9753a8ae33c92aeb92c5ae0c9663cc1b70bac5255984f92d2638397776561075fc72c95 |
| SHA1 hash: | bced673ab0cf6f008264c763f399899471d30a53 |
| MD5 hash: | 3b53bd591f29e0a2cc3d500db4c4cf8a |
| humanhash: | snake-sixteen-georgia-network |
| File name: | test_decryptor.exe |
| Download: | download sample |
| Signature | RustyStealer |
| File size: | 2'128'384 bytes |
| First seen: | 2025-12-06 17:31:11 UTC |
| Last seen: | 2025-12-06 19:33:03 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 5aff6c59906e71ba7f18f6b50812a6ef (6 x RustyStealer) |
| ssdeep | 49152:qgWujJn1BC16aiei88HqTCTELZjrxlGsRTcXDT8Jh8J:BWujsi88H6yvXAhI |
| TLSH | T161A56C03F3A581A9C1DED1B98701A775BD7BB88D096076BF0AD34A303E69E944F1E718 |
| TrID | 41.1% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 26.1% (.EXE) Win64 Executable (generic) (10522/11/4) 12.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.1% (.ICL) Windows Icons Library (generic) (2059/9) 5.0% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  juroots |
| Tags: | exe RustyStealer |
Intelligence
File Origin
# of uploads :
3
# of downloads :
80
Origin country :
CHVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
test_decryptor.exe
Verdict:
No threats detected
Analysis date:
2025-12-06 17:50:56 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
93.3%
Tags:
infector virus
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug anti-vm cmd expand fingerprint lolbin mingw obfuscated packed packed vmprotect
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-12-06T15:43:00Z UTC
Last seen:
2025-12-07T01:41:00Z UTC
Hits:
~10
Verdict:
Unknown
Score:
85%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
3 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Threat name:
Win64.Virus.Generic
Status:
Suspicious
First seen:
2025-12-06 14:53:18 UTC
File Type:
PE+ (Exe)
AV detection:
8 of 24 (33.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
credential_access defense_evasion discovery spyware stealer
Behaviour
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
Drops desktop.ini file(s)
Credentials from Password Stores: Windows Credential Manager
Reads user/profile data of web browsers
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
4a41291979ce387fd5470ad5afd9db2938669d813f7da7f43dd9f53413457399
MD5 hash:
3b53bd591f29e0a2cc3d500db4c4cf8a
SHA1 hash:
bced673ab0cf6f008264c763f399899471d30a53
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: | command_and_control |
|---|---|
| Author: | CD_R0M_ |
| Description: | This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| 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: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| 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: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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