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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8. 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: c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8
SHA3-384 hash: bb7261b33a3be0a3675892f51f81d667f1ae87cd8dd036fe798f6000723f0d7706f7b294655f5cc31fe85774eba37b67
SHA1 hash: 846b7bb80ecbc6ab4b4ccd74604fc4058148bf84
MD5 hash: 63d447c1cf2bac0ea4c313c39d8c133e
humanhash: whiskey-red-pasta-blue
File name:Fatura.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:680'568 bytes
First seen:2026-03-09 08:50:51 UTC
Last seen:2026-03-09 09:20:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer)
ssdeep 12288:xL2FyV3yC/KoErt+93mpIIcL1wWUx1usXMfv1zEzZQ+Erd:xLoyV3yQACwM11Ux14fv1zEF8
Threatray 2'475 similar samples on MalwareBazaar
TLSH T1BBE401156AE7C433C9940B700426D6BE6B2A6D4428D143077FD0BE9FF9772924E3EE86
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 b271fca22b9adca4 (1 x GuLoader)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Tilisning
Issuer:Tilisning
Algorithm:sha256WithRSAEncryption
Valid from:2026-01-07T08:27:33Z
Valid to:2027-01-07T08:27:33Z
Serial number: 7b0cf6320bcaef2e7b009d3e698b67e80c52603c
Thumbprint Algorithm:SHA256
Thumbprint: d286a9128bda81587cbdbc94257919c42ede3bd403d5ced9b681c3b4cdc736b7
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
201
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Link:
https://research.acce.ciphertechsolutions.com/results/249ebf8a-e316-4b25-b435-38ff51d644f8/
Malware family:
n/a
ID:
1
File name:
https://bazaar.abuse.ch/download/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8/
Verdict:
Malicious activity
Analysis date:
2026-03-09 08:51:30 UTC
Tags:
evasion snake keylogger telegram stealer spyware smtp
Link:
https://app.any.run/tasks/321388d4-31ef-4932-8cb4-ac5a8fc5660e

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/56741/
Detection(s):
SecuriteInfo.com.Trojan.Multi.Generic.4c.11520.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69ae8a0ce5dc8e2b2c316e76
Tags:
injection virus nsis blic
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Link:
https://www.filescan.io/uploads/69ae8a049eaae846594610a8/reports/4556adb6-03b3-449e-a9fb-85e6d127dbdb/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8
Verdict:
Malicious
File Type:
exe x32
Link:
https://opentip.kaspersky.com/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8/results?tab=lookup
Malware family:
Unlabeled
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/58ba501f-e80f-4fff-8b57-3d449ca456ca
Result
Threat name:
GuLoader, Snake Keylogger
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1880432
Signature
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
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)
Uses the Telegram API (likely for C&C communication)
Yara detected GuLoader
Yara detected Snake Keylogger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
90%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-03-02 22:02:49 UTC
File Type:
PE (Exe)
Extracted files:
31
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yma7optwgfz4z7wex3y56l46unpf2sb433k3y3mhqe53bx2t2hea._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
328d7d13111a6db7cad0a56c3707296bff0aa17665387097e61ccd6f696a4f07
GuLoader
68db7504dc6689ddfa6f5ca341c824f1f34dea654ad653153be12b0dc2c768ab
GuLoader
6c911c6dc571f10ae519bcded475f8b1d6cf24053a06e97a9002e137420b9f6a
GuLoader
7d7fb25981642c7e5b3f9cb50cd158e2cad03d1c5f0cf146150861c6f6ee7893
GuLoader
8f0eb8904bf7e5d851a5dad363c6c9523de8006cbc8b6f824ff7647a582c80ae
GuLoader
966fae15977591dcc0cbb59722997dcc6093e56c4de02f5b20644c4dfe05d2ea
GuLoader
bfc26ab00d8285f3790019b1a7714f463edada527ba985ca45517ad2d53f298f
GuLoader
e2eb4e8d10cc9afb0786c5ce189797809037764207ec5ab4c9463688bc7640c0
GuLoader
ec890897b98ab1becd75a33a0fcb434b25498110a60ee6d628832ec0d25430b6
GuLoader
error
GuLoader
f715d6b481d6fe16d630b2318d73961ee4a1ee2050aa2d71d3037a14f7e44ee1
GuLoader
+ 2'465 additional samples on MalwareBazaar
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger collection discovery keylogger spyware stealer
Link:
https://tria.ge/reports/260309-kr9ftacs7j/
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
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for 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
VIPKeylogger
Vipkeylogger family
Unpacked files
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
Link:
https://www.unpac.me/results/c6afc2af-e87b-4fef-8bcb-827360678119/
SH256 hash:
c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8
MD5 hash:
63d447c1cf2bac0ea4c313c39d8c133e
SHA1 hash:
846b7bb80ecbc6ab4b4ccd74604fc4058148bf84
Link:
https://www.unpac.me/results/c6afc2af-e87b-4fef-8bcb-827360678119/
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/c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8

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 c301f73e763173ccfec4bef1df2f9ea35e5d483cded5bc6d87813bb0df53d1c8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/56741/

Comments