MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 cdf346d260738deb8cf5f396518e4d6efe4423c6cedcfe959c1454b10a55b08a. 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: 14
| SHA256 hash: | cdf346d260738deb8cf5f396518e4d6efe4423c6cedcfe959c1454b10a55b08a |
|---|---|
| SHA3-384 hash: | 042edf5abcbd3fbadcac12a408e51c8689203fe00453820a47766a2c67541f6df5460fa8349850c4d66095ebea12846f |
| SHA1 hash: | 1c2c323f7aa3b8ef808edd1cf47989403edc831f |
| MD5 hash: | d006a733f96d98ffd71bec2a616e28fe |
| humanhash: | three-timing-chicken-arizona |
| File name: | cdf346d260738deb8cf5f396518e4d6efe4423c6cedcfe959c1454b10a55b08a |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 1'512'416 bytes |
| First seen: | 2026-04-14 09:19:55 UTC |
| Last seen: | 2026-05-08 12:29:03 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 744 x AgentTesla, 441 x GuLoader) |
| ssdeep | 24576:rYXcwiDlWUY93m/RhHcSZqCxtMKUCELDR1PCdCnTuMDOXOtQc+7:kXcvkUYlm52DKELD7syTuX6+7 |
| TLSH | T1D9651253342885C6D7748B394D6AD259ABB37F3C0866A70E31A67E19A1B93731C3F360 |
| 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 | f874e6c60c2cdcc4 (3 x AgentTesla, 2 x GuLoader) |
| Reporter |  JAMESWT_WT |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Tattooage |
|---|---|
| Issuer: | Tattooage |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-03-11T08:11:10Z |
| Valid to: | 2027-03-11T08:11:10Z |
| Serial number: | 3708f14df6e049c285007491f9405d9ad80f4b27 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 11f851d02c9fecb4fb470acb0302eac926e54be51e0a130e4289da3106b19c0a |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
227
Origin country :
ITVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
n/a
ID:
1
File name:
cdf346d260738deb8cf5f396518e4d6efe4423c6cedcfe959c1454b10a55b08a
Verdict:
Malicious activity
Analysis date:
2026-04-14 09:22:41 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
95.7%
Tags:
injection androm virus nsis
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file
Searching for the window
Sending a custom TCP request
Restart of the analyzed sample
Gathering data
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-02T04:59:00Z UTC
Last seen:
2026-04-16T06:08:00Z UTC
Hits:
~1000
Detections:
Trojan.NSIS.Makoob.sba Trojan-Downloader.Win32.Minix.sb Packed.NSIS.Krynis.sb HEUR:Backdoor.Win32.Androm.gen Trojan.Win32.GuLoader.sb Trojan.NSIS.Pakes.Krynis.sb Backdoor.Androm.HTTP.Download
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Detection:
agenttesla
Verdict:
Malicious
Threat:
Trojan.NSIS.Makoob
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2026-04-02 11:24:04 UTC
File Type:
PE (Exe)
Extracted files:
18
AV detection:
16 of 24 (66.67%)
Threat level:
5/5
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
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Unpacked files
SH256 hash:
cdf346d260738deb8cf5f396518e4d6efe4423c6cedcfe959c1454b10a55b08a
MD5 hash:
d006a733f96d98ffd71bec2a616e28fe
SHA1 hash:
1c2c323f7aa3b8ef808edd1cf47989403edc831f
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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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