MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a073704e18e10cd3e8d20e61b0671292d2a7ef52e4cd8e2b1c88a7ff62c3bf73. 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: 15
| SHA256 hash: | a073704e18e10cd3e8d20e61b0671292d2a7ef52e4cd8e2b1c88a7ff62c3bf73 |
|---|---|
| SHA3-384 hash: | 989e9d1443725b19941713d976466b1a4a5b727ff115c2990689d8b08d45dec2dbc1094169f3fdfbafb7746ff9ce218c |
| SHA1 hash: | df87540b6af75f79909d9ebfc739e929bfbc5ed0 |
| MD5 hash: | ae5f2f7ace440ca63a6f5e177ff93b68 |
| humanhash: | snake-alanine-fillet-october |
| File name: | a073704e18e10cd3e8d20e61b0671292d2a7ef52e4cd8e2b1c88a7ff62c3bf73 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 334'056 bytes |
| First seen: | 2026-06-08 09:49:42 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | ced282d9b261d1462772017fe2f6972b (127 x Formbook, 123 x GuLoader, 72 x RemcosRAT) |
| ssdeep | 6144:K9X0G7HCo89joe9fL6HrXUcxKterwHy9MtTHiytdjbWYaSFs/ktC:80IHCoK0epLorXrmekSORfne |
| TLSH | T1B7641212B290C467CE971570487EC7B6C6F182F8432D6F676B14376A3872AD34B1EE28 |
| 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 | c4dadadad2f492c2 (148 x GuLoader, 51 x RemcosRAT, 23 x VIPKeylogger) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Brittlewort |
|---|---|
| Issuer: | Brittlewort |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-04-14T08:28:58Z |
| Valid to: | 2027-04-14T08:28:58Z |
| Serial number: | 2ea59a85399995ac2301a881abdb3c9ede9cf2bc |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | b8359c0e1704973aaa6e6c76d59ab2b12abd69391dcf8c693a535641372a2b98 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
43
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
agenttesla
ID:
1
File name:
321.EXE
Verdict:
Malicious activity
Analysis date:
2026-05-18 08:21:03 UTC
Tags:
stealer ultravnc rmm-tool ftp agenttesla exfiltration amsi-bypass
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Detection(s):
Verdict:
Malicious
Score:
99.1%
Tags:
injection obfusc virus nsis
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Deleting a recently created file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Sending an HTTP GET request
DNS request
Connection attempt
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug guloader installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Verdict:
Malicious
Labled as:
Downloader/GuLoader
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-18T05:11:00Z UTC
Last seen:
2026-06-08T03:59:00Z UTC
Hits:
~100
Verdict:
Unknown
Score:
98%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Trojan.Win32.Minix
Threat name:
Win32.Trojan.Minix
Status:
Malicious
First seen:
2026-05-18 07:51:47 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
27 of 36 (75.00%)
Threat level:
5/5
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery installer
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Unpacked files
SH256 hash:
a073704e18e10cd3e8d20e61b0671292d2a7ef52e4cd8e2b1c88a7ff62c3bf73
MD5 hash:
ae5f2f7ace440ca63a6f5e177ff93b68
SHA1 hash:
df87540b6af75f79909d9ebfc739e929bfbc5ed0
SH256 hash:
d09a8b3ade4ba4b7292c0b3da1bcb4b6c6e2012e0ccfd5e029a54af73a9e1b57
MD5 hash:
4ca4fd3fbefa2f6e87e6e9ee87d1c0b3
SHA1 hash:
7cdbeb5ff2b14b86af04e075d0ca651183ea5df4
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| 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.
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