MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84. 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: 17


Intelligence 17 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84
SHA3-384 hash: 6fbbc24ddcefca0cb05378700cdc252f25ba2c6284e8897c6e38c765d4a35f7bef8596682b0ef59f072cd6b822429761
SHA1 hash: a3306df4ffb7404e9c553894f2b000ced0d701ac
MD5 hash: d46598b29f6a30d14e0ae8c63ae42a0a
humanhash: yankee-louisiana-seven-orange
File name:doc19541020260402084858[1].exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'378'200 bytes
First seen:2026-04-12 18:55:56 UTC
Last seen:2026-04-27 07:56:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 46ce5c12b293febbeb513b196aa7f843 (37 x GuLoader, 21 x RemcosRAT, 9 x AgentTesla)
ssdeep 24576:84MTo7AMKA3e4HYw2ezVvPs/C9FhR/7kpKL+vgh6k/iS6e:RMTokCe4HDJzVHs2FhR/74Kkgh6kH6e
Threatray 2'442 similar samples on MalwareBazaar
TLSH T1C255BF90F165FCA6E51788B28D7A8170148AAF68CCB8521E3496771A15F339320FFE5F
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 3074dcdcdcccc4d4 (1 x GuLoader, 1 x RemcosRAT)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Talemongering
Issuer:Talemongering
Algorithm:sha256WithRSAEncryption
Valid from:2026-02-26T02:39:02Z
Valid to:2027-02-26T02:39:02Z
Serial number: 57b43480fb26a1bf3b8c5453d45872d213889896
Thumbprint Algorithm:SHA256
Thumbprint: 44a6f2f80fc30e57ebec1df3fdcae79cccd4602524026717de254a2d5a3d801c
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
159
Origin country :
HU HU
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/9d968984-7fb2-4a4b-9a1c-40d004db3660/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
doc195410202604020848581.exe
Verdict:
Malicious activity
Analysis date:
2026-04-12 18:59:34 UTC
Tags:
remcos rat
Link:
https://app.any.run/tasks/de81256e-5a26-4bd2-bf05-e1f6c48ac237

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/61281/
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69dbead4f68adfe1003923ee
Tags:
remcos nsis
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-06T04:08:00Z UTC
Last seen:
2026-04-14T10:58:00Z UTC
Hits:
~1000
Detections:
PDM:Trojan.Win32.Generic Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbe Trojan.NSIS.Makoob.sba Trojan-Downloader.Win32.Minix.sb Backdoor.Win32.Remcos.sb Backdoor.Win32.Remcos.abvw Trojan-Spy.Win32.Xegumumune.sbc VHO:Backdoor.Win32.Remcos.gen
Link:
https://opentip.kaspersky.com/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/9253f590-70f3-4833-a034-48101963565d
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84
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/d46598b29f6a30d14e0ae8c63ae42a0a
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84
Threat name:
Win32.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-04-06 09:47:28 UTC
File Type:
PE (Exe)
Extracted files:
23
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkvua4swcxuhzx6u6kcfhvshyjwscom2vfiloy3c3nsqdhg2xkca._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
177cfa885f0765b9f144317458a981980d76e123ecc2db7f5b93168bcc8a50a9
GuLoader
5b9f81f49d46c692df2aef1af5c708324551d0ae5b6103148ccd8afb761c17d5
GuLoader
7b2b89b5c92d6436888e918e397eaf479429c9c29eb864adb2f3b56e7ef0676d
GuLoader
8e918dc30ae62e349340f07b703627d829553dbf4f641b13da548e1e179a3463
GuLoader
96ab7d863f04da8870f5966a24666f618ebd037dd67e2923dc357e20532149cb
GuLoader
b77a470abcad2acdddec07438813988ed2fd51fc4215ab1e8b803c7df3f90539
GuLoader
bbf8661385fb7921e79eeedc96638845cc489f296652da655a9a0079680dcffe
GuLoader
bdcbaac3992e430d7db16978bc9b7ae1a4b6da4a04d471054367ff7ca4e1c37b
GuLoader
ec47f3160aeb30ca660e18a30ca62c9e91806f4337404697308070260668879d
GuLoader
error
GuLoader
+ 2'432 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost discovery downloader rat
Link:
https://tria.ge/reports/260412-xlfyjacy5m/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Remcos
Remcos family
Malware Config
C2 Extraction:
212.162.149.143:2404
Unpacked files
SH256 hash:
b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84
MD5 hash:
d46598b29f6a30d14e0ae8c63ae42a0a
SHA1 hash:
a3306df4ffb7404e9c553894f2b000ced0d701ac
Link:
https://www.unpac.me/results/3269fcff-1816-42ea-bdf8-6c983c1d54c9/
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/3269fcff-1816-42ea-bdf8-6c983c1d54c9/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b2ab40725615/report/overview.html
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/b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84

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
Rule name:VECT_Ransomware
Create hunting rule
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

GuLoader

Executable exe b2ab40725615e87cdfd4f28453d647c26d21399aa950b76362db65019cdaba84

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/61281/

Comments