MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b39eaec9267ce32916823eba57c71fbe321b9648cc8f50ee6d1a171800daa1e4. 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: | b39eaec9267ce32916823eba57c71fbe321b9648cc8f50ee6d1a171800daa1e4 |
|---|---|
| SHA3-384 hash: | 1263a59fd89977c3f3c3cd1a71d75cb5e54afd2d3f44f92f6114f24ef96b7dae4b62b78325019424536b5cd74132b48b |
| SHA1 hash: | bac01f415ab5e6e43b1fd2a6b3713bf7adb1ab1e |
| MD5 hash: | e6b2cc822ad480918e97070a62643b90 |
| humanhash: | ten-carolina-artist-uniform |
| File name: | New_Purchase_Order_PO-2025-01001481_pdf.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 615'960 bytes |
| First seen: | 2025-11-11 08:59:03 UTC |
| Last seen: | 2025-12-08 14:39:08 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 6e7f9a29f2c85394521a08b9f31f6275 (326 x GuLoader, 65 x AgentTesla, 65 x RemcosRAT) |
| ssdeep | 12288:OMweUzNb/QMy+P1NyRJwonnb1UB57NlBPrjkGWl:OMweUzNb/QMTtNyRJwEnh07RzjBY |
| Threatray | 2'264 similar samples on MalwareBazaar |
| TLSH | T1E6D412827784C486D67525305EB2CD752B35FC7CA960864B32D8BF0B3DF6553AA0FA0A |
| 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 |
| dhash icon | 30f488c940f87e9c (4 x GuLoader, 2 x Formbook, 1 x VIPKeylogger) |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Nonascendantly |
|---|---|
| Issuer: | Nonascendantly |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-10-22T05:41:46Z |
| Valid to: | 2026-10-22T05:41:46Z |
| Serial number: | 0ba1aa238953a388a1db3f5ce992a49c753daeef |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | f9c8d7f68351a4fb8d2d354f59ec0718fb634ed5b974e9988e990fc8d997613c |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
189
Origin country :
DEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New_Purchase_Order_PO-2025-01001481_pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-11-11 09:01:57 UTC
Tags:
stealer crypto-regex phantom telegram exfiltration evasion ims-api generic
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
93.3%
Tags:
underscore nsis
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Creating a file
Delayed reading of the file
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer installer installer-heuristic masquerade microsoft_visual_cc nsis overlay signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-11T00:22:00Z UTC
Last seen:
2025-11-13T06:48:00Z UTC
Hits:
~1000
Detections:
HEUR:Trojan.Win32.GuLoader.gen VHO:Trojan-Downloader.Win32.Convagent.gen Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb
Malware family:
Unlabeled
Verdict:
Unknown
Result
Threat name:
GuLoader, Phantom stealer
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
.NET source code contains potential unpacker
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
Contains functionality to register a low level keyboard hook
Found malware configuration
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
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 Costura Assembly Loader
Yara detected GuLoader
Yara detected Phantom stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Score:
86%
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.GULOADER
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-11-11 08:59:15 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
23 of 37 (62.16%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'254 additional samples on MalwareBazaar
Result
Malware family:
phantom_stealer
Score:
10/10
Tags:
family:guloader family:phantom_stealer collection discovery downloader persistence spyware stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
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 web browsers
Detects PhantomStealer payload
Guloader family
Guloader,Cloudeye
PhantomStealer
Phantom_stealer family
Malware Config
C2 Extraction:
https://api.telegram.org/bot8317489635:AAGuFwSA514jDG7Cd5CK-sE8t4UmJmEBquY/sendMessage?chat_id=6897585916
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
b39eaec9267ce32916823eba57c71fbe321b9648cc8f50ee6d1a171800daa1e4
MD5 hash:
e6b2cc822ad480918e97070a62643b90
SHA1 hash:
bac01f415ab5e6e43b1fd2a6b3713bf7adb1ab1e
SH256 hash:
6bf9cccd8a600f4d442efe201e8c07b49605ba35f49a4b3ab22fa2641748e156
MD5 hash:
48f3e7860e1de2b4e63ec744a5e9582a
SHA1 hash:
420c64d802a637c75a53efc8f748e1aede3d6dc6
SH256 hash:
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 hash:
564bb0373067e1785cba7e4c24aab4bf
SHA1 hash:
7c9416a01d821b10b2eef97b80899d24014d6fc1
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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