MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4d88ce05409e52572b1e2b1e7471672f703472e410ad5b71c7fd13e6dafe01eb. 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: | 4d88ce05409e52572b1e2b1e7471672f703472e410ad5b71c7fd13e6dafe01eb |
|---|---|
| SHA3-384 hash: | 5783acfb53a4ef75d8b90ba0c965a2fe4c77edda2205df098182022bbcd59eff0982cfb5642e71751e4a6bee3193d996 |
| SHA1 hash: | 052c6ddb0520d76e1c6005bef96e28e9e7e9638f |
| MD5 hash: | 1c754ccbcd8b81e148b6bf1e8e1408fa |
| humanhash: | stream-fourteen-finch-alabama |
| File name: | 4d88ce05409e52572b1e2b1e7471672f703472e410ad5b71c7fd13e6dafe01eb |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 612'384 bytes |
| First seen: | 2026-08-10 14:47:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 573bb7b41bc641bd95c0f5eec13c233b (62 x GuLoader, 31 x RemcosRAT, 29 x AgentTesla) |
| ssdeep | 12288:/TA580bdpG0uxWBn1R02Y43VKuEHV+nxTo8+sMX9dkmE2f0:/TA580bi0uxWF1R0P4lJLO8hmE28 |
| TLSH | T17CD402C0E7409C32C6908975CECB86A6C7997717D0BB85F2FE70B95E687392219DBE40 |
| 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 | 96b2ccccb2baa200 (3 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Astringent |
|---|---|
| Issuer: | Astringent |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-07-03T01:29:58Z |
| Valid to: | 2027-07-03T01:29:58Z |
| Serial number: | 29e82bd0e995c1c817c9b5830c3216c0dc0e0f9d |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 5b805662951a644ac2b25dde695773b43fce0fd236df8b683ac3e738813464e4 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
49
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Malware family:
n/a
ID:
1
File name:
QuarantineMessage(1).zip
Verdict:
Malicious activity
Analysis date:
2026-07-24 09:13:59 UTC
Tags:
attachments attc-arch arch-exec ip-check evasion telegram keylogger snake stealer spyware
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Suspicious
Maliciousness:
Behaviour
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Searching for the window
Delayed reading of the file
Launching a service
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug guloader installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-22T20:27:00Z UTC
Last seen:
2026-08-12T13:18:00Z UTC
Hits:
~1000
Gathering data
Score:
95%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2026-07-23 01:12:48 UTC
File Type:
PE (Exe)
Extracted files:
21
AV detection:
25 of 36 (69.44%)
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
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Unpacked files
SH256 hash:
4d88ce05409e52572b1e2b1e7471672f703472e410ad5b71c7fd13e6dafe01eb
MD5 hash:
1c754ccbcd8b81e148b6bf1e8e1408fa
SHA1 hash:
052c6ddb0520d76e1c6005bef96e28e9e7e9638f
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Malware family:
GuLoader
Verdict:
Malicious
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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