MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 daf8f37785d226524b5403bc24e018955f01d5d2ce7d0952cb74c18bd79d09be. 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: 12
| SHA256 hash: | daf8f37785d226524b5403bc24e018955f01d5d2ce7d0952cb74c18bd79d09be |
|---|---|
| SHA3-384 hash: | 2617d8e29fc8e41c3bbe497074a193c5fae4bc2ff3effef9fc6a0d6455d0cb1b900eae6022e2287afc655206c4b7e9c9 |
| SHA1 hash: | bbf557d7b8ae61cec5b68d251ea12c78c97453f7 |
| MD5 hash: | b63697cb6128ae927b67e1f95fcbbe0f |
| humanhash: | maryland-utah-pluto-arizona |
| File name: | Directrices de políticas para empleados_2026.pdf.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 428'256 bytes |
| First seen: | 2026-07-22 11:06:25 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 573bb7b41bc641bd95c0f5eec13c233b (54 x GuLoader, 31 x RemcosRAT, 23 x AgentTesla) |
| ssdeep | 6144:HTA8oPSCIjFo6XHfvTx2yQy8ARUvOa40Di4Ynu+ja:HTA6FoAHoy8ovz07A4 |
| TLSH | T1E994CF53F694C986D81112F04C7FD82922676D7898A3520F3EADF73D6EB3292F11724A |
| 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 | 7168686979b2b2b2 (1 x GuLoader, 1 x AgentTesla) |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Aerolitten |
|---|---|
| Issuer: | Aerolitten |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-06-09T01:55:46Z |
| Valid to: | 2027-06-09T01:55:46Z |
| Serial number: | 10c7a35bd764d430a6b8902b460e7848bd1f5e09 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | a943736a69e376bdebaf3e6b7b2fe3245db0320c89ecccf4c6b6f6197091ee43 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
192
Origin country :
DEVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Malware family:
agenttesla
ID:
1
File name:
25371800835.zip
Verdict:
Malicious activity
Analysis date:
2026-07-09 14:07:57 UTC
Tags:
ip-check stealer evasion ftp agenttesla exfiltration
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Result
Verdict:
Suspicious
Maliciousness:
Behaviour
Creating a window
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Unauthorized injection to a recently created process
Creating a process from a recently created file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
installer installer masquerade microsoft_visual_cc nsis signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-08T08:56:00Z UTC
Last seen:
2026-07-21T23:58:00Z UTC
Hits:
~10000
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
AI detected suspicious PE / MSI digital signature
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
99%
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
Threat name:
Win32.Malware.Heuristic
Status:
Malicious
First seen:
2026-07-08 12:42:01 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
23 of 36 (63.89%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Unpacked files
SH256 hash:
daf8f37785d226524b5403bc24e018955f01d5d2ce7d0952cb74c18bd79d09be
MD5 hash:
b63697cb6128ae927b67e1f95fcbbe0f
SHA1 hash:
bbf557d7b8ae61cec5b68d251ea12c78c97453f7
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
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: | 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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