MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b91b3e2c3e95e105fd0f5b910f936655b664bec6785a7d93e5c5a06168a663f2. 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: | b91b3e2c3e95e105fd0f5b910f936655b664bec6785a7d93e5c5a06168a663f2 |
|---|---|
| SHA3-384 hash: | d6e486fb2a1f25a73f894343e68e1a63f90f0f8a31f3a62ae820eb5e06a0395969481bbdbc1113be07c24521a5c3a8dc |
| SHA1 hash: | 184c42a3a4b222dea1579b8b0ae7b79887cfe91e |
| MD5 hash: | 074bb3720d90a19975ecdca1b1fd7fd7 |
| humanhash: | zulu-nebraska-iowa-sad |
| File name: | b91b3e2c3e95e105fd0f5b910f936655b664bec6785a7d93e5c5a06168a663f2 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 680'472 bytes |
| First seen: | 2026-02-05 16:13:45 UTC |
| Last seen: | 2026-02-05 17:36:27 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | e2a592076b17ef8bfb48b7e03965a3fc (419 x GuLoader, 63 x RemcosRAT, 52 x AgentTesla) |
| ssdeep | 12288:lBNUqpxqIuNp9rnVXbUttpwWGRA+POobvoE5j4RcWaKIyOiy3N:FBpkJnnNIz6RtWGoG421ey3N |
| TLSH | T1F7E4236132B28D72F557123554A25FAA1E5BCC12142871632342BD9BECFA3B2DD3E387 |
| 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 | e8f8bcecd496d666 (6 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | whimble |
|---|---|
| Issuer: | whimble |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-01-03T07:49:48Z |
| Valid to: | 2027-01-03T07:49:48Z |
| Serial number: | 27bc626bc3444364eca432ee8ff99305e8a41961 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 0c8ca166ebdcdcb92e2949054d1c0a3f35ef0c98752122103bf42da6ada62bf2 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
162
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
pendiente de pago.rar
Verdict:
Malicious activity
Analysis date:
2026-01-30 07:46:20 UTC
Tags:
arch-exec snake
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
93.3%
Tags:
injection virus nsis blic
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-29T00:53:00Z UTC
Last seen:
2026-02-07T13:35:00Z UTC
Hits:
~1000
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Trojan.Win32.Minix
Threat name:
Win32.Trojan.Kepavll
Status:
Malicious
First seen:
2026-01-29 03:55:18 UTC
File Type:
PE (Exe)
Extracted files:
40
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader macos
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Unpacked files
SH256 hash:
b91b3e2c3e95e105fd0f5b910f936655b664bec6785a7d93e5c5a06168a663f2
MD5 hash:
074bb3720d90a19975ecdca1b1fd7fd7
SHA1 hash:
184c42a3a4b222dea1579b8b0ae7b79887cfe91e
SH256 hash:
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 hash:
17ed1c86bd67e78ade4712be48a7d2bd
SHA1 hash:
1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SH256 hash:
c13104552b8b553159f50f6e2ca45114493397a6fa4bf2cbb960c4a2bbd349ab
MD5 hash:
42b064366f780c1f298fa3cb3aeae260
SHA1 hash:
5b0349db73c43f35227b252b9aa6555f5ede9015
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: | 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.
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