MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 e778a38b56eb28c4ec4b89c3ae79ba0b0465b60184a828f63a06ec0de13181fb. 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: 10
| SHA256 hash: | e778a38b56eb28c4ec4b89c3ae79ba0b0465b60184a828f63a06ec0de13181fb |
|---|---|
| SHA3-384 hash: | 4949d582a167ff3307cc0807fb250c7e2697d37354d10d66f1b9ea537572612c62c215ed79477a862536cb66960314c6 |
| SHA1 hash: | b91b94837be3c3606cec877adad38fb8ab87bc06 |
| MD5 hash: | 04ac7d7b11d6dcbab12d48081a6da955 |
| humanhash: | undress-minnesota-ceiling-lemon |
| File name: | e778a38b56eb28c4ec4b89c3ae79ba0b0465b60184a828f63a06ec0de13181fb |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 239'688 bytes |
| First seen: | 2026-07-07 15:32:05 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (326 x GuLoader, 65 x AgentTesla, 63 x RemcosRAT) |
| ssdeep | 6144:fMm4CCBMgsreEqBf8ebErVGwi2nuAoFXTT6OLFE:fMwNg/XU7GwvuAUXTT7LFE |
| TLSH | T12934010066E1D4A6E5555571CE279FF81AE0FE22CE60878723C87F0E3839BC1E91E74A |
| 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 | cccebe9696e47998 (3 x GuLoader, 2 x AgentTesla) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | kursusmodulet |
|---|---|
| Issuer: | kursusmodulet |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-06-12T02:26:04Z |
| Valid to: | 2027-06-12T02:26:04Z |
| Serial number: | 173dcc915c7fbc7a62208255f0b1489b0e79f4ce |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 994e715864f342adc0c35edf094c12b38692c9f9527c3b296b2d708c288ad089 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
142
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
70%
Tags:
injection obfusc crypt
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Launching a service
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-23T02:38:00Z UTC
Last seen:
2026-07-09T09:32:00Z UTC
Hits:
~1000
Detections:
Backdoor.Androm.HTTP.Download Trojan.Win32.Guloader.sb Trojan-Downloader.Win32.Minix.sb HEUR:Backdoor.Win32.Androm.gen Exploit.Win64.Crun.e
Verdict:
Suspicious
Score:
76%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Family.GULOADER
Threat name:
Win32.Trojan.Ravartar
Status:
Malicious
First seen:
2026-06-23 05:35:48 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
25 of 36 (69.44%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader adware discovery downloader persistence spyware
Behaviour
Checks SCSI registry key(s)
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates connected drives
Loads dropped DLL
Boot or Logon Autostart Execution: Active Setup
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
e778a38b56eb28c4ec4b89c3ae79ba0b0465b60184a828f63a06ec0de13181fb
MD5 hash:
04ac7d7b11d6dcbab12d48081a6da955
SHA1 hash:
b91b94837be3c3606cec877adad38fb8ab87bc06
SH256 hash:
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
MD5 hash:
6e55a6e7c3fdbd244042eb15cb1ec739
SHA1 hash:
070ea80e2192abc42f358d47b276990b5fa285a9
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: | 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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