MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 9138f856abcfa5d294d729e558a9138047b2b35c3e5932512191c8d984c9d28e. 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: 13
| SHA256 hash: | 9138f856abcfa5d294d729e558a9138047b2b35c3e5932512191c8d984c9d28e |
|---|---|
| SHA3-384 hash: | bba33685d3a4b4af220626ccae5a72d2765137c63f251fd29135c597eae2d2dc896296dd3e853b81ac88ebe26411f8a8 |
| SHA1 hash: | 6e11abf096e0d672a8d98b06b5210270dcf979c6 |
| MD5 hash: | 85adf6495111ac52494580c5797865ae |
| humanhash: | berlin-victor-california-pizza |
| File name: | 9138f856abcfa5d294d729e558a9138047b2b35c3e5932512191c8d984c9d28e |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 214'752 bytes |
| First seen: | 2026-07-07 14:13:25 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki) |
| ssdeep | 6144:ObE/HU5qVy0EMFf2l2t14dvHOzXj19VfilqbolcfT:ObFqeMF2kt14de19Vkwo+7 |
| Threatray | 2'427 similar samples on MalwareBazaar |
| TLSH | T16F24F110E9609C27E0E24276192AE6BBDBBBDD2118419F071B247F6B7C772B2950F353 |
| 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 | d022d8c8f28f80c0 (44 x GuLoader, 12 x VIPKeylogger, 7 x Formbook) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
107
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
Malware family:
formbook
ID:
1
File name:
b01fafc8ab92afba5b5f8d32fac08d701ad89c0f3900b506b58aae912731bf55
Verdict:
Malicious activity
Analysis date:
2026-06-11 13:50:05 UTC
Tags:
arch-exec formbook stealer xloader
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:
Suspicious
Maliciousness:
Behaviour
Creating a file
Creating a file in the %temp% subdirectories
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:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug base64 installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed similar-threat
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-10T04:55:00Z UTC
Last seen:
2026-07-07T23:48:00Z UTC
Hits:
~100
Verdict:
Unknown
Score:
97%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Malware.Heuristic
Status:
Malicious
First seen:
2026-06-10 08:47:45 UTC
AV detection:
26 of 38 (68.42%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'417 additional samples on MalwareBazaar
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:
9138f856abcfa5d294d729e558a9138047b2b35c3e5932512191c8d984c9d28e
MD5 hash:
85adf6495111ac52494580c5797865ae
SHA1 hash:
6e11abf096e0d672a8d98b06b5210270dcf979c6
SH256 hash:
56b96add1978b1abba286f7f8982b0efbe007d4a48b3ded6a4d408e01d753fe2
MD5 hash:
6c3f8c94d0727894d706940a8a980543
SHA1 hash:
0d1bcad901be377f38d579aafc0c41c0ef8dcefd
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
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: | 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: | FormhookB |
|---|---|
| Author: | kevoreilly |
| Description: | Formbook Anti-hook Bypass |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | NSIS |
|---|---|
| Author: | kevoreilly |
| Description: | NSIS Integrity Check function |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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 |
| Rule name: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
| 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. |
| Rule name: | Win_FakeInstaller_PythonShellcodeLoader_Crepectl_2026 |
|---|---|
| Author: | SixHands |
| Description: | Detects the analyzed fake installer sample using .key config, XOR key, and Python/fiber shellcode loader traits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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