MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 64aaa3dc6c606a2c1b6015db31526762f465ce9b347d06e2cef0420cb6199a5a. 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
GuLoader
Vendor detections: 13
| SHA256 hash: | 64aaa3dc6c606a2c1b6015db31526762f465ce9b347d06e2cef0420cb6199a5a |
|---|---|
| SHA3-384 hash: | 4293d83c56fbbd421922083f3bb880ceb9cca61ada8563ad097a5f2e2aeacc81c9c194afbc382230ee16b27c7566f020 |
| SHA1 hash: | 9499b25d10eb98dc58282f5e26c799d056cb71b2 |
| MD5 hash: | 6bd61fa1cc45c7721a34123449a5442f |
| humanhash: | xray-stairway-jersey-carbon |
| File name: | 64aaa3dc6c606a2c1b6015db31526762f465ce9b347d06e2cef0420cb6199a5a |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 258'680 bytes |
| First seen: | 2026-03-06 15:06:01 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 671f2a1f8aee14d336bab98fea93d734 (204 x GuLoader, 4 x Formbook, 4 x RemcosRAT) |
| ssdeep | 6144:0cBvWb0e4vcCmotxJNIKduziH6+2Rk+VzpA1vqloiE0QO5Gq127:dO0e4UCZ/Jp9a+GtAVyoZoLW |
| Threatray | 2'472 similar samples on MalwareBazaar |
| TLSH | T1FD44120672D1C1F3E5734B748D3B9A3BE6D5CB122191960B3B753E6F7CB2306092A162 |
| TrID | 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | c4dadadad2f492c2 (148 x GuLoader, 51 x RemcosRAT, 23 x VIPKeylogger) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | biledets |
|---|---|
| Issuer: | biledets |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-01-26T11:17:47Z |
| Valid to: | 2027-01-26T11:17:47Z |
| Serial number: | 4049e0871a4f4dbd6cc640ea49376edcd45f5f49 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 65932618997e995b19ce64fbdc5307587e5c8d98e0a945bba1a79db41d12d6d7 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
124
Origin country :
HUVendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
64aaa3dc6c606a2c1b6015db31526762f465ce9b347d06e2cef0420cb6199a5a
Verdict:
Malicious activity
Analysis date:
2026-03-06 16:06:39 UTC
Tags:
stealer ultravnc rmm-tool exfiltration smtp agenttesla
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:
96.5%
Tags:
uloader virus nsis blic
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Verdict:
Malicious
File Type:
exe x32
Verdict:
Unknown
Score:
99%
Verdict:
Malware
File Type:
PE
Gathering data
Detection:
agenttesla
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2026-02-18 14:05:10 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
26 of 36 (72.22%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'462 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
family:agenttesla discovery installer keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Agenttesla family
Unpacked files
SH256 hash:
64aaa3dc6c606a2c1b6015db31526762f465ce9b347d06e2cef0420cb6199a5a
MD5 hash:
6bd61fa1cc45c7721a34123449a5442f
SHA1 hash:
9499b25d10eb98dc58282f5e26c799d056cb71b2
SH256 hash:
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042
MD5 hash:
12b140583e3273ee1f65016becea58c4
SHA1 hash:
92df24d11797fefd2e1f8d29be9dfd67c56c1ada
SH256 hash:
b2699fdfdab6a018fcc972806d12f71972de1861660bb6578935d62b1da06504
MD5 hash:
3cea4c9994912d8f3c3e8b6a814e810e
SHA1 hash:
c48d34a0981d4ab576c7a3ab566f5ddb94af5d86
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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