MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 59c5bf5a8268701b3630491af54fc4b2ca1a488ddbcecd93f320c862c89c3be1. 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: | 59c5bf5a8268701b3630491af54fc4b2ca1a488ddbcecd93f320c862c89c3be1 |
|---|---|
| SHA3-384 hash: | be26ad4672503712d3d93cfa147c2e359be03cb3bc9d8ab56d41bb40faaa3f25bd3a8d6143538f1807d284ba3e9e3302 |
| SHA1 hash: | 0f47e629bf7e4a940c01a5ebd31b9e7a56d1a4b7 |
| MD5 hash: | 8157a7fe5eba3a6510bd8b4ddcda1921 |
| humanhash: | wisconsin-network-hot-winter |
| File name: | 59c5bf5a8268701b3630491af54fc4b2ca1a488ddbcecd93f320c862c89c3be1 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 904'080 bytes |
| First seen: | 2025-10-09 14:13:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 4ea4df5d94204fc550be1874e1b77ea7 (246 x GuLoader, 32 x RemcosRAT, 26 x VIPKeylogger) |
| ssdeep | 12288:Jg12Da0gcNJdatLTYmYc0/aYuj7Z24aNPitqrFXh8dW6Y0wkyCJ7Dsl:na0gUqFTYmUaN042nrRh8dhyCfK |
| TLSH | T187151244334CC4CAF8AD7970867BD0BA6FA1B8716425CDDA32F15B1E4A37920FE0B569 |
| 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 | c9ccccdcd8f87efc (6 x GuLoader, 6 x VIPKeylogger) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Polybasicity |
|---|---|
| Issuer: | Polybasicity |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-08-21T00:08:43Z |
| Valid to: | 2026-08-21T00:08:43Z |
| Serial number: | 25e11b78ce527026788c39f623334b56cdf7c0d0 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | b288d83668e797ec11815309057a0b7c9c85cb5776c507f7100902cd76d463ae |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
62
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
59c5bf5a8268701b3630491af54fc4b2ca1a488ddbcecd93f320c862c89c3be1
Verdict:
Malicious activity
Analysis date:
2025-10-09 16:14:35 UTC
Tags:
evasion snake keylogger telegram stealer smtp
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
95.7%
Tags:
uloader virus nsis blic
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context guloader installer microsoft_visual_cc obfuscated overlay signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-18T10:21:00Z UTC
Last seen:
2025-10-09T06:32:00Z UTC
Hits:
~1000
Verdict:
Suspicious
Score:
76%
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
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2025-09-19 08:08:44 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
17 of 36 (47.22%)
Threat level:
5/5
Detection(s):
Suspicious file
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
Drops file in Program Files directory
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 local email clients
Reads user/profile data of web browsers
Guloader family
Guloader,Cloudeye
VIPKeylogger
Vipkeylogger family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
59c5bf5a8268701b3630491af54fc4b2ca1a488ddbcecd93f320c862c89c3be1
MD5 hash:
8157a7fe5eba3a6510bd8b4ddcda1921
SHA1 hash:
0f47e629bf7e4a940c01a5ebd31b9e7a56d1a4b7
SH256 hash:
982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b
MD5 hash:
0ff2d70cfdc8095ea99ca2dabbec3cd7
SHA1 hash:
10c51496d37cecd0e8a503a5a9bb2329d9b38116
SH256 hash:
aedb5122c12037bcf5c79c2197d1474e759cf47c67c37cdb21cf27428854a55b
MD5 hash:
d6c3dd680c6467d07d730255d0ee5d87
SHA1 hash:
57e7a1d142032652256291b8ed2703b3dc1dfa9b
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.
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