MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 66335ef4e13b73e6877d5326bb34e0bb95f3c8fa59493c16ff8273d1afdc76f9. 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
AgentTesla
Vendor detections: 16
| SHA256 hash: | 66335ef4e13b73e6877d5326bb34e0bb95f3c8fa59493c16ff8273d1afdc76f9 |
|---|---|
| SHA3-384 hash: | 169781a0d82b42b9902e3968167b294daed932686cbf62b3b49a41f35938f9150e3fab45e4c31a10cf3a089b8a6dea06 |
| SHA1 hash: | cb1cda6d99dc37209210b8e06af15c7517f89e0b |
| MD5 hash: | bac6508cfbfee2707e933b0bfd31a0fe |
| humanhash: | pizza-hawaii-jupiter-cat |
| File name: | PO#23451.exe |
| Download: | download sample |
| Signature | AgentTesla |
| File size: | 721'216 bytes |
| First seen: | 2026-09-23 07:00:35 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | c05041e01f84e1ccca9c4451f3b6a383 (142 x RedLineStealer, 109 x GuLoader, 64 x DiamondFox) |
| ssdeep | 12288:Qgd2pXRakSjqbf+vOZ8xbBA7cjwviXtnZCICsemzN55p:QgophaE+vOuxMgtEIrdPf |
| TLSH | T13BE4011227A5DD1BD8B3277824A0D779BB374F996129C70717F2BDB73A3A6831C18281 |
| 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 | 09e641e4fc2898a8 (1 x AgentTesla) |
| Reporter |  lowmal3 |
| Tags: | AgentTesla exe signed |
Code Signing Certificate
| Organisation: | Foregrebet |
|---|---|
| Issuer: | Foregrebet |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-09-02T08:05:33Z |
| Valid to: | 2027-09-02T08:05:33Z |
| Serial number: | 2bf758b9d2fceb9738649042ac5f930a31f1f3d7 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | c1b02b3b40456ae642245b892f3c99f5b6f5ab3df9edcf9378affd7daf83c23a |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
174
Origin country :
DEVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Malware family:
agenttesla
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-23 07:03:06 UTC
Tags:
stealer ip-check evasion agenttesla
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Sending an HTTP GET request to an infection source
Connection attempt to an infection source
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
installer installer microsoft_visual_cc nsis phishing signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-23T01:48:00Z UTC
Last seen:
2026-09-23T04:00:00Z UTC
Hits:
~1000
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
AI detected suspicious PE / MSI digital signature
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
92%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Detection:
agenttesla
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
CloudEyE
Result
Malware family:
agenttesla
Score:
10/10
Tags:
family:agenttesla collection discovery keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Family: AgentTesla
Unpacked files
SH256 hash:
66335ef4e13b73e6877d5326bb34e0bb95f3c8fa59493c16ff8273d1afdc76f9
MD5 hash:
bac6508cfbfee2707e933b0bfd31a0fe
SHA1 hash:
cb1cda6d99dc37209210b8e06af15c7517f89e0b
SH256 hash:
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
MD5 hash:
6e55a6e7c3fdbd244042eb15cb1ec739
SHA1 hash:
070ea80e2192abc42f358d47b276990b5fa285a9
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
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: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | NSIS |
|---|---|
| Author: | kevoreilly |
| Description: | NSIS Integrity Check function |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| 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.
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