MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 bcbbc761561cfebebf30e13c8894e48ea6b2f9e5286c291118c75ae6918c9d68. 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: 12
| SHA256 hash: | bcbbc761561cfebebf30e13c8894e48ea6b2f9e5286c291118c75ae6918c9d68 |
|---|---|
| SHA3-384 hash: | 0c8c91ba98ac1739659884d6931cb4dd704823c8a16babe84644077a51d76d8bd395bfca8ce3b87aa5de562f62a9d1bb |
| SHA1 hash: | dda31f3c2cb5eac6f42745c4b0bffd8a452514da |
| MD5 hash: | 562f7ae252dc03fe56dd458330771748 |
| humanhash: | papa-ceiling-lactose-minnesota |
| File name: | bcbbc761561cfebebf30e13c8894e48ea6b2f9e5286c291118c75ae6918c9d68 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 925'299 bytes |
| First seen: | 2026-03-06 15:20:56 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 9dda1a1d1f8a1d13ae0297b47046b26e (65 x Formbook, 48 x GuLoader, 28 x RemcosRAT) |
| ssdeep | 24576:dadWcJwkm2HvzcV6xOWaeM/vCdps00eJlGzvofwHR91:AWcJwkHHLcV60Cw0VDGLoIHR91 |
| Threatray | 2'506 similar samples on MalwareBazaar |
| TLSH | T1B31522402AD9C4DAE7180676D83BCAF20F16DD685A90905633F97F5B3EB6783702B709 |
| 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 | c1ac669a9acae5c9 (2 x GuLoader, 1 x Formbook) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
131
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
n/a
ID:
1
File name:
bcbbc761561cfebebf30e13c8894e48ea6b2f9e5286c291118c75ae6918c9d68
Verdict:
Suspicious activity
Analysis date:
2026-03-06 16:35:13 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
95.7%
Tags:
injection uloader virus nsis
Verdict:
Malicious
File Type:
exe x32
Verdict:
Unknown
Score:
97%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Guloader
Status:
Suspicious
First seen:
2026-02-23 13:50:26 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
25 of 36 (69.44%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'496 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
bcbbc761561cfebebf30e13c8894e48ea6b2f9e5286c291118c75ae6918c9d68
MD5 hash:
562f7ae252dc03fe56dd458330771748
SHA1 hash:
dda31f3c2cb5eac6f42745c4b0bffd8a452514da
SH256 hash:
131aa0df90c08dce2eecee46cce8759e9afff04bf15b7b0002c2a53ae5e92c36
MD5 hash:
549ee11198143574f4d9953198a09fe8
SHA1 hash:
2e89ba5f30e1c1c4ce517f28ec1505294bb6c4c1
SH256 hash:
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 hash:
192639861e3dc2dc5c08bb8f8c7260d5
SHA1 hash:
58d30e460609e22fa0098bc27d928b689ef9af78
SH256 hash:
89a82c4849c21dfe765052681e1fad02d2d7b13c8b5075880c52423dca72a912
MD5 hash:
b7d61f3f56abf7b7ff0d4e7da3ad783d
SHA1 hash:
15ab5219c0e77fd9652bc62ff390b8e6846c8e3e
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_detect_tls_callbacks |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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