MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a48d589f38b17090308566abf94f5ebd1a8263e7052cec2784f5e9dbfe04dcbf. 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: 17
| SHA256 hash: | a48d589f38b17090308566abf94f5ebd1a8263e7052cec2784f5e9dbfe04dcbf |
|---|---|
| SHA3-384 hash: | 8ab3dfe94182576d8c14ced2b2a6155801787253fac541dfa1f6edee2ca44b848df8ed09dc6673524b840198bcdedf0b |
| SHA1 hash: | 2626edf8a2a91664378ffa49506a7282f8ceb0bd |
| MD5 hash: | b73179be98239895d3c4d6ffe1a6a6b4 |
| humanhash: | may-crazy-zebra-ten |
| File name: | FACTURA PENDIENTE DE PAGO.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 532'512 bytes |
| First seen: | 2026-02-24 07:11:18 UTC |
| Last seen: | 2026-03-06 15:23:58 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1f23f452093b5c1ff091a2f9fb4fa3e9 (303 x GuLoader, 47 x AgentTesla, 47 x RemcosRAT) |
| ssdeep | 12288:a1yDJVfppRDy7CfTWDJPr+GB6n2rxIc9MH:a1yDJtppRDyA6V+GBW2FIc9MH |
| Threatray | 2'523 similar samples on MalwareBazaar |
| TLSH | T1E2B4232A1EC69C47C54A1EF32637A243EBBDD8852431D7431B20E70CBDB73A985917E9 |
| 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 |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Arbejdskopien |
|---|---|
| Issuer: | Arbejdskopien |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-02-23T01:58:47Z |
| Valid to: | 2027-02-23T01:58:47Z |
| Serial number: | 4ba563463ed5bb3670a3544bbe9f1e951ec77004 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | c33468a8f9ab3ed9a38a2717a45ef2730bcbaaf2a1da4aed9b204fe5942f3044 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
3
# of downloads :
177
Origin country :
DEVendor 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:
n/a
ID:
1
File name:
_a48d589f38b17090308566abf94f5ebd1a8263e7052cec2784f5e9dbfe04dcbf.exe
Verdict:
Malicious activity
Analysis date:
2026-02-24 07:14:30 UTC
Tags:
evasion snake keylogger telegram stealer
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:
92.5%
Tags:
injection virus blic
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
DNS request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic masquerade microsoft_visual_cc nsis packed signed soft-404 unsafe
Verdict:
Malicious
Labled as:
Trojan_Win32_Wacatac_B_ml
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.Win32.Agent.sb UDS:DangerousObject.Multi.Generic PDM:Trojan.Win32.Generic HEUR:Trojan-Downloader.Win32.Minix.gen
Malware family:
Unlabeled
Verdict:
Unknown
Result
Threat name:
GuLoader, Snake Keylogger
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
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)
Unusual module load detection (module proxying)
Uses the Telegram API (likely for C&C communication)
Yara detected GuLoader
Yara detected Snake Keylogger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Score:
87%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Family.SNAKE
Threat name:
Win32.Trojan.Guloader
Status:
Suspicious
First seen:
2026-02-23 23:09:17 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
13 of 24 (54.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'513 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Score:
10/10
Tags:
family:guloader family:vipkeylogger collection discovery downloader 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
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for 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
Guloader family
Guloader,Cloudeye
VIPKeylogger
Vipkeylogger family
Unpacked files
SH256 hash:
a48d589f38b17090308566abf94f5ebd1a8263e7052cec2784f5e9dbfe04dcbf
MD5 hash:
b73179be98239895d3c4d6ffe1a6a6b4
SHA1 hash:
2626edf8a2a91664378ffa49506a7282f8ceb0bd
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
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:
1.00
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
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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