MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 640d4390b574d98cd36bd206a65fceec9c322b4008a915519f55a8d39265c78c. 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: | 640d4390b574d98cd36bd206a65fceec9c322b4008a915519f55a8d39265c78c |
|---|---|
| SHA3-384 hash: | 83000f9ed3bb8692242b38e0744eaf467170d2833df5838bf59f896415aa7caa514c319459e6a92208a541cbdc52b879 |
| SHA1 hash: | 44b1f17c6716851075dd1a74aead174b7fcc976a |
| MD5 hash: | 6bdec974b6a33ac38c1ec88ccd4385b4 |
| humanhash: | cup-quiet-cardinal-august |
| File name: | transferencia-768934-564534.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 490'100 bytes |
| First seen: | 2026-05-20 17:45:13 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer) |
| ssdeep | 12288:vUeRVFH0VxfCsbdysP2mybjsGqaSS7lPNz:vUIBCxasRys+XXfz |
| TLSH | T1F7A423803130D24BEC6347B5052E2D5F67BAE5BBAA102645D7D07E993C27382A91F37B |
| 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 | ecc8d4dcccdcdcd4 (1 x GuLoader) |
| Reporter |  TomU |
| Tags: | exe GuLoader |
Intelligence
File Origin
# of uploads :
1
# of downloads :
88
Origin country :
CHVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
an XOR decryption key and an extracted component
GuLoader
a c2 URL, a useragent string, and a string XOR key
NSIS
extracted archive contents
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-05-21 01:01:54 UTC
Tags:
ip-check evasion snake keylogger stealer telegram spyware
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:
injection uloader virus nsis
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-06-04T14:17:00Z UTC
Last seen:
2026-05-21T14:48:00Z UTC
Hits:
~10000
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.Generic
Status:
Suspicious
First seen:
2025-06-04 17:22:59 UTC
AV detection:
13 of 24 (54.17%)
Threat level:
5/5
Result
Malware family:
vipkeylogger
Score:
10/10
Tags:
family:guloader family:vipkeylogger discovery downloader keylogger stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Looks up external IP address via web service
Loads dropped DLL
Family: Guloader,Cloudeye
Family: VIPKeylogger
Malware Config
C2 Extraction:
https://api.telegram.org/bot7852563330:AAFXFP-iYUbBznbIZbszekH4YOYGTd6rj2c/sendMessage?chat_id=7618581100
Unpacked files
SH256 hash:
640d4390b574d98cd36bd206a65fceec9c322b4008a915519f55a8d39265c78c
MD5 hash:
6bdec974b6a33ac38c1ec88ccd4385b4
SHA1 hash:
44b1f17c6716851075dd1a74aead174b7fcc976a
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
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:
0.79
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: | 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. |
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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