MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab. 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


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab
SHA3-384 hash: 48479e7759be8fb78e9f11fe27915356819be66f55ebc3243b79dc09eba0e5b58d3175eb2d9bc226fca1b8ce8dec964e
SHA1 hash: dbe8c069d87a8b8e05939686525201fddf697f73
MD5 hash: df2c33bdfb1faea10a742e923a23f93b
humanhash: island-thirteen-illinois-orange
File name:Copy of payment receipt 412-020392622.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:630'504 bytes
First seen:2025-12-19 14:30:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (325 x GuLoader, 63 x RemcosRAT, 56 x AgentTesla)
ssdeep 12288:yTltCQulJbX9/ZFjffrvw0Sn3lhPHLG1XKrUr7Crqg4C:yTlt6lJ5hJffDUn3lhwSTrGC
TLSH T102D412277A40B312CC304132985F86A20B657C3ADAD15F977788E72E34B3561DE1E7AE
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 707868d0c480e0f4 (1 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Underborn
Issuer:Underborn
Algorithm:sha256WithRSAEncryption
Valid from:2025-11-24T02:11:24Z
Valid to:2026-11-24T02:11:24Z
Serial number: 45a880cdf08c0604ed199be910b0f807364e4f41
Thumbprint Algorithm:SHA256
Thumbprint: 662e9c26be8569c1c0a1210c005300cfd5f61f0aba962c2da30969dcecaa2de2
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
150
Origin country :
DE DE
Vendor 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
Link:
https://research.acce.ciphertechsolutions.com/results/67b8fa2b-46ba-44d2-b8f5-17fbefc35e12/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
_345197e755eeff627bcbea9a52280ce7d2b830cacf12552592fd0d62c8704c1a.rar
Verdict:
Malicious activity
Analysis date:
2025-12-19 10:40:44 UTC
Tags:
arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/36bcda61-bc37-4603-98a3-1837ffa657e6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/45518/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=694525c8021cfe859b07bbdc
Tags:
injection uloader virus nsis
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic masquerade microsoft_visual_cc nsis overlay signed
Link:
https://www.filescan.io/uploads/69456189a7163552ba02eadd/reports/95033297-0fb7-4e03-b0ef-f3b5b06b1b71/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-17T10:43:00Z UTC
Last seen:
2025-12-21T11:46:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbe Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb HEUR:Trojan.Win32.GuLoader.gen Trojan-Downloader.Win32.Minix.sb
Link:
https://opentip.kaspersky.com/96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5be31ed3-f8dd-4b00-9498-7f0068a9c35c
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1836313
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
77%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab
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/df2c33bdfb1faea10a742e923a23f93b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-12-18 10:53:16 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=s3yd47pdtso2a7ejqdtvd2n5jethfl26k2cb6cuaqih6may37wvq._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader discovery downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/251223-qa2mjazmet/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Formbook payload
Formbook
Formbook family
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5d558727-9b83-4f25-b9af-6cb56a396e78
Unpacked files
SH256 hash:
96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab
MD5 hash:
df2c33bdfb1faea10a742e923a23f93b
SHA1 hash:
dbe8c069d87a8b8e05939686525201fddf697f73
Link:
https://www.unpac.me/results/1fa6f08e-b543-4b0b-b2f1-e0b1ee4b334b/
SH256 hash:
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 hash:
564bb0373067e1785cba7e4c24aab4bf
SHA1 hash:
7c9416a01d821b10b2eef97b80899d24014d6fc1
Link:
https://www.unpac.me/results/1fa6f08e-b543-4b0b-b2f1-e0b1ee4b334b/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/96f03e7de39c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab

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 96f03e7de39c9da07c8980e751e9bd492672af5e56841f0a80820fe6031bfdab

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45518/

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