MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 de8f73afa5a50d50af9c19e74a12731cdc1285254954dabb2ab75155c935a004. 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: | de8f73afa5a50d50af9c19e74a12731cdc1285254954dabb2ab75155c935a004 |
|---|---|
| SHA3-384 hash: | 51b7991d7aa69d1deecf8c5a54d5facf3ce188ed7b4e84a0dd63a577b056ef4674030b1137e2bb2d197b150a0d0afc29 |
| SHA1 hash: | 0bc03e84b5e5755e4d09621455a029d17084ce2a |
| MD5 hash: | 44d098e0337e7bc95cdf94285b69d71a |
| humanhash: | spaghetti-wyoming-batman-september |
| File name: | Justificante pago Factura 3049.scr |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 880'520 bytes |
| First seen: | 2025-09-24 07:19:35 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 9a16e282eba7cc710070c0586c947693 (26 x GuLoader, 11 x VIPKeylogger, 7 x RemcosRAT) |
| ssdeep | 24576:b/p8apkZoEmaqTu2cBHZFpswXRC3CXe+zmFdyuQsqTom7p0DvMh:KapfKqTDyHZnxXQaec7uQ+m764h |
| Threatray | 44 similar samples on MalwareBazaar |
| TLSH | T17615236727B8C42BFA8313300A764297F7F3D5106A424C8F3FA8B78DAE51AD4981D55B |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Exposable |
|---|---|
| Issuer: | Exposable |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-08-30T23:37:32Z |
| Valid to: | 2026-08-30T23:37:32Z |
| Serial number: | 483b4000d5ea7460415ae81a9a14b064ce11319b |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 0e4dbcb5924aad36c4c57ba4e0ada89f1ff17ea2964cef7df5214cde819b5a3b |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
106
Origin country :
DEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
389830582.zip
Verdict:
No threats detected
Analysis date:
2025-09-23 11:13:15 UTC
Tags:
arch-exec attachments attc-pdf
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
99.1%
Tags:
uloader virus nsis blic
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer masquerade microsoft_visual_cc nsis overlay signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-22T07:33:00Z UTC
Last seen:
2025-09-22T07:33:00Z UTC
Hits:
~10000
Detections:
Packed.NSIS.Krynis.sb VHO:Trojan-Downloader.Win32.Minix.gen Trojan.Win32.GuLoader.sb Trojan.NSIS.Makoob.sba Trojan.NSIS.Makoob.lo Trojan.NSIS.Makoob.sbb Trojan.NSIS.Pakes.Krynis.sb Trojan-Downloader.Win32.Minix.sb
Verdict:
Unknown
Result
Threat name:
GuLoader, Snake Keylogger
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
AI detected suspicious PE digital signature
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Yara detected GuLoader
Yara detected Snake Keylogger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Score:
92%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.SNAKE
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2025-09-22 14:25:28 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
17 of 24 (70.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 34 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Score:
10/10
Tags:
family:vipkeylogger collection discovery installer keylogger spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
VIPKeylogger
Vipkeylogger family
Verdict:
Suspicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Unpacked files
SH256 hash:
de8f73afa5a50d50af9c19e74a12731cdc1285254954dabb2ab75155c935a004
MD5 hash:
44d098e0337e7bc95cdf94285b69d71a
SHA1 hash:
0bc03e84b5e5755e4d09621455a029d17084ce2a
SH256 hash:
7853be9190489ba84dae8232e9a967cec02d941732cb4137bc9ae6a392e89fb8
MD5 hash:
3fbd78c889fa40a2e5567b980c57b7db
SHA1 hash:
303564bfa6fd5ab7a65d35ae1cd14a05643b6b5d
SH256 hash:
a44ca08afb3f6bafd76aa35c259f3d599fe34f6f49ea5118626c1c1a540b0f03
MD5 hash:
81e268e27dbbcadbf116b5a9402195ab
SHA1 hash:
bd2b701b2e5e279786e179bceee2dc132a2afc37
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: | CP_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| Rule name: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
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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