MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae
SHA3-384 hash: 6a10e50e7a6b98e0c60bd5b5bb44dda8b49e5846f6e5b6a4e0df717b7733798ebbebed06213352706e407f9cdafde9d3
SHA1 hash: 39974cf7b33a4baeabfc14e5da10ef1e48ddd52d
MD5 hash: cc73762dba1a36feb21c5298a5efe552
humanhash: johnny-lamp-island-freddie
File name:Payment Confirmation.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:360'272 bytes
First seen:2026-03-09 08:58:18 UTC
Last seen:2026-03-09 09:41:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 573bb7b41bc641bd95c0f5eec13c233b (48 x GuLoader, 31 x RemcosRAT, 18 x AgentTesla)
ssdeep 6144:8bfopTUgXRZKgphcxV3s4a43e/kDtEfczqDbo8U4:8bKRZp88w3ecxEfczqM8U4
Threatray 2'457 similar samples on MalwareBazaar
TLSH T17E740103B3B0D623DB780631D8279B5A4A9BEDB81F91570B13587E4A3CB2741AE0F765
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 34367196b2b27233 (1 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Nedtrykket
Issuer:Nedtrykket
Algorithm:sha256WithRSAEncryption
Valid from:2026-02-10T03:08:17Z
Valid to:2027-02-10T03:08:17Z
Serial number: 18d1fa80daf21f46f325d6540f3e149c1f364577
Thumbprint Algorithm:SHA256
Thumbprint: cd3392972ed1a88b7e98fd89602ce98cfd610f2a8368d633d4d3ed27088e1f27
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
183
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/cd22af6d-e1ab-49d9-bbc2-3355f117626f/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
NotificacindePago_pdf.gz
Verdict:
Malicious activity
Analysis date:
2026-03-02 15:22:06 UTC
Tags:
arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/1af12269-62d9-415d-bb65-6693fafbb47c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/56747/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader49.35354.24101.8211.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69ae8be5e41a5a09993150be
Tags:
injection obfusc virus
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae
Verdict:
Malicious
File Type:
exe x32
Link:
https://opentip.kaspersky.com/f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8dc87158-3d53-4b44-bcf0-2d7c0e180daa
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1880427
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample has a suspicious name (potential lure to open the executable)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1880427 Sample: Payment Confirmation.exe Startdate: 09/03/2026 Architecture: WINDOWS Score: 100 35 www.sdtuanjian.xyz 2->35 37 www.dalero.xyz 2->37 39 17 other IPs or domains 2->39 49 Suricata IDS alerts for network traffic 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 Multi AV Scanner detection for submitted file 2->53 57 9 other signatures 2->57 10 Payment Confirmation.exe 33 2->10         started        signatures3 55 Performs DNS queries to domains with low reputation 37->55 process4 file5 31 C:\Users\user\AppData\Local\...\System.dll, PE32 10->31 dropped 33 C:\Users\user\AppData\Local\...\LangDLL.dll, PE32 10->33 dropped 13 Payment Confirmation.exe 6 10->13         started        17 Payment Confirmation.exe 10->17         started        process6 dnsIp7 47 onesoul.co.za 197.189.239.150, 49690, 80 xneeloZA South Africa 13->47 67 Maps a DLL or memory area into another process 13->67 19 Sy1Uhkf29w4qO.exe 13->19 injected 21 Payment Confirmation.exe 13->21         started        signatures8 process9 process10 23 gpupdate.exe 13 19->23         started        signatures11 59 Tries to steal Mail credentials (via file / registry access) 23->59 61 Tries to harvest and steal browser information (history, passwords, etc) 23->61 63 Modifies the context of a thread in another process (thread injection) 23->63 65 4 other signatures 23->65 26 u9xealRW4.exe 23->26 injected 29 firefox.exe 23->29         started        process12 dnsIp13 41 www.dalero.xyz 203.161.63.201, 49720, 49721, 49722 VNPT-AS-VNVNPTCorpVN Malaysia 26->41 43 dallas.community 15.197.225.128, 49712, 49713, 49714 TANDEMUS United States 26->43 45 11 other IPs or domains 26->45
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/cc73762dba1a36feb21c5298a5efe552
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2026-03-02 11:02:11 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=66cuqvretkoclmkpb2bddt2gxtttrea6pb4x6sg7uukhjkxox6xa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
15ec45ad6f7f06d24da3b12c9a7e2c1181c791b89d9539e79427f87cfca7fc45
GuLoader
1ba7b11eeef611157b460daf8bed0ee6187130897818242fdd6de9ff91f78e16
GuLoader
313526cf14d75c03c9eaa9d0944d52f79f5eab3302f0c7f1122be1e4dc632d67
GuLoader
41f9059375488b49b72a25ce58e80d9ef64f199934bff7862de5a114b5895757
GuLoader
658f84fa8ac86bbfafad15a692165ef768e3db869038810a079fd5d0d430f29d
GuLoader
960d16e2fdf3b4684b2a60851b0f85cc975adca8e80881f7e869986f06f4f078
GuLoader
error
GuLoader
f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae
GuLoader
+ 2'447 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260309-kxt83sfy5t/
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
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae
MD5 hash:
cc73762dba1a36feb21c5298a5efe552
SHA1 hash:
39974cf7b33a4baeabfc14e5da10ef1e48ddd52d
Link:
https://www.unpac.me/results/526f147f-17cd-4f70-9bcd-306934cac92e/
SH256 hash:
4cf25411f28f639f72156c24b0f66ea42f5aee5973f6c137d901da6ae42d5b7e
MD5 hash:
4b8a750993567ac9a350ba9768fabfa0
SHA1 hash:
7ee7a8c313b292d62561b085c9d490c0f8065624
Link:
https://www.unpac.me/results/526f147f-17cd-4f70-9bcd-306934cac92e/
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/526f147f-17cd-4f70-9bcd-306934cac92e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae

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
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Executable exe f7854856249a9c25b14f0e8231cf46bce738901e78797f48dfa51474aaeebfae

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/56747/

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