MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 55b94d2169dd83841a2a564691e72f6c80fa3b7d422bd17fccc1e9bfc1bcf8d2. 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: | 55b94d2169dd83841a2a564691e72f6c80fa3b7d422bd17fccc1e9bfc1bcf8d2 |
|---|---|
| SHA3-384 hash: | f8e6f632f4abf9555c442f9646fa834dcb715d0428e548b04e6f7b280cfd43be994ead79a75c693b9fd0854a5e3acc51 |
| SHA1 hash: | b7650afd89d66fd8b4f79f90c4d52914bc3ddf78 |
| MD5 hash: | 6c4fadd3f08871ca404283d95fef054c |
| humanhash: | diet-beryllium-xray-aspen |
| File name: | shipping documentations_pdf.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 575'376 bytes |
| First seen: | 2026-04-12 18:56:19 UTC |
| Last seen: | 2026-04-27 07:57:24 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 6144:vmOPM7+Tke5chEWo6hUl43iDNDRizFaBo3r+tA2Ohr/iaJuVnNfs0VhkdsICLb7x:E5oOyDNDRiD7+lOhrXunfPkd/CH7x |
| TLSH | T159C4CF72E103E686D91578F9C9279DD924C4EC59D0E0E8B9B0AF7B39C0B1B51858FA0F |
| 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 | f9b0e864d2d0f98c (3 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Encephalotome |
|---|---|
| Issuer: | Encephalotome |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-03-05T05:18:37Z |
| Valid to: | 2027-03-05T05:18:37Z |
| Serial number: | 4eff69aa33e5be6dc40dc6033a93a36c584a2a6c |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 62be73e5ca720d5057a0f4184bbef1cb4eec302416c20014dc1b40e2aec76d1e |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
3
# of downloads :
188
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
shipping documentations_pdf.exe
Verdict:
Malicious activity
Analysis date:
2026-04-12 18:57:42 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
90.2%
Tags:
underscore injection virus blic
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-08T03:34:00Z UTC
Last seen:
2026-04-14T04:21:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.GuLoader.sb Trojan.NSIS.Pakes.Krynis.sb Trojan-Downloader.Win32.Minix.sb Packed.NSIS.Krynis.sb HEUR:Trojan.Win32.Guloader.gen Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba
Malware family:
Unlabeled
Verdict:
Unknown
Score:
59%
Verdict:
Susipicious
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Family.GULOADER
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2026-04-08 09:55:24 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Unpacked files
SH256 hash:
55b94d2169dd83841a2a564691e72f6c80fa3b7d422bd17fccc1e9bfc1bcf8d2
MD5 hash:
6c4fadd3f08871ca404283d95fef054c
SHA1 hash:
b7650afd89d66fd8b4f79f90c4d52914bc3ddf78
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
Malware family:
GuLoader
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: | DebuggerCheck__API |
|---|---|
| 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: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | telebot_framework |
|---|---|
| Author: | vietdx.mb |
| Rule name: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
| 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.
Malspam
Delivery method
Distributed via e-mail attachment
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