MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 31a6b7c0fff43f956bd590b85502b6da248574fb02f692aa4f9fdc4cb88d5197. 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: 16
| SHA256 hash: | 31a6b7c0fff43f956bd590b85502b6da248574fb02f692aa4f9fdc4cb88d5197 |
|---|---|
| SHA3-384 hash: | 9a97bc817fd569b3d8e5b57bc4fa27a81592fafaf1b281edd8754bec41a2a56839d5b39671597500cb343c4f2dcdedc0 |
| SHA1 hash: | 4d0d717a851d011bc44c8a36b08411b8d031b878 |
| MD5 hash: | 7578c0ec048e56a8cedcb4a67b4d44b0 |
| humanhash: | failed-pasta-twelve-princess |
| File name: | 31a6b7c0fff43f956bd590b85502b6da248574fb02f692aa4f9fdc4cb88d5197 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 324'840 bytes |
| First seen: | 2026-03-06 14:57:40 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | e2a592076b17ef8bfb48b7e03965a3fc (419 x GuLoader, 63 x RemcosRAT, 52 x AgentTesla) |
| ssdeep | 6144:k4t6LsyAWYRsw3HWstdrAjMAUKtsFWEm4hQ3W0Qx5TDdjJtcl6O:kkdW+TtF9Ktu1h0Qnyl7 |
| TLSH | T1386412453B20C0B7E5A21EB02D6A3E974EB2CB051828A75B27607FDD7D327569D0E387 |
| 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 | 9ec6639aaa909a00 (2 x AgentTesla, 2 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Pseudomultilocular |
|---|---|
| Issuer: | Pseudomultilocular |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-02-04T11:21:56Z |
| Valid to: | 2027-02-04T11:21:56Z |
| Serial number: | 0971df8ff8b1e516c9155044e28fd31f37d55e16 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 78b70172e48f169d87db6a6e6399385253ea370b2415a11fea3138756c4de5e0 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
128
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Malware family:
guloader
ID:
1
File name:
PO2170028234.exe
Verdict:
Malicious activity
Analysis date:
2026-02-20 14:25:29 UTC
Tags:
guloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Detection(s):
Verdict:
Malicious
Score:
95.7%
Tags:
injection virus blic
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic microsoft_visual_cc nsis packed signed similar-threat soft-404
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
Malware family:
NSIS
Verdict:
Unknown
Score:
89%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Family.GULOADER
Threat name:
Win32.Trojan.Guloader
Status:
Suspicious
First seen:
2026-02-17 09:17:37 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
19 of 36 (52.78%)
Threat level:
5/5
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Unpacked files
SH256 hash:
31a6b7c0fff43f956bd590b85502b6da248574fb02f692aa4f9fdc4cb88d5197
MD5 hash:
7578c0ec048e56a8cedcb4a67b4d44b0
SHA1 hash:
4d0d717a851d011bc44c8a36b08411b8d031b878
SH256 hash:
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 hash:
17ed1c86bd67e78ade4712be48a7d2bd
SHA1 hash:
1cc9fe86d6d6030b4dae45ecddce5907991c01a0
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.72
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: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| 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 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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