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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de
SHA3-384 hash: c213997fbf83bdafa59b9b17cf5aa26124b3e2551f9c74bfd21968b7bf2ef088f5d1806b071faa8e1e6ee37c6df457eb
SHA1 hash: daa5bcb603981597c9e7cb17455b0a3dd69615b7
MD5 hash: 9494a2871a5782e1c3044e2dc8784282
humanhash: spaghetti-arkansas-delta-network
File name:2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de
Download: download sample
Signature GuLoader
Create hunting rule
File size:808'936 bytes
First seen:2026-05-08 13:17:26 UTC
Last seen:2026-06-08 09:06:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 0293eec0b5432ad092f24065016203b2 (22 x GuLoader, 18 x RemcosRAT, 6 x Formbook)
ssdeep 12288:FSW9MrpT34uxqhxw3LUOCxiO4VYdTxC7dZcU6siAaPmpmM:FSW9MrpT3kbw3LUOHtYC7dZcPs+E
TLSH T175056C517670E7AEE6761639B4CAC26D65547C30AD06038FF1B07FA807B2EAC4F82791
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 d4d878787024d0c0 (8 x RemcosRAT, 1 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Unstrewn
Issuer:Unstrewn
Algorithm:sha256WithRSAEncryption
Valid from:2026-02-25T07:43:51Z
Valid to:2027-02-25T07:43:51Z
Serial number: 4c474200bd7aa5e5fdbff84fd19fa087e2f6f377
Thumbprint Algorithm:SHA256
Thumbprint: d3a233191ee234d7ab27fa70d68591b4f31bb98228874fd84ca2e3d9e4de36f3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
171
Origin country :
HU HU
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/3e4b654c-f364-4162-992d-4b35549411b9/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-05-08 19:36:47 UTC
Tags:
rat remcos auto-reg
Link:
https://app.any.run/tasks/81fa08a3-e86f-4619-b442-706f2d98e789

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/65271/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.37743.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
Sending a custom TCP request
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug base64 installer installer installer-heuristic microsoft_visual_cc nsis signed similar-threat soft-404
Link:
https://www.filescan.io/uploads/69fde2fe792fe2d217addfa6/reports/866a117c-06da-4491-be16-a2af74cff457/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-16T04:46:00Z UTC
Last seen:
2026-05-09T20:55:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/03b1ba5b-8637-4899-9647-9298eee12ee5
Score:
90%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de/
Threat name:
Win32.Trojan.Makoob
Create hunting rule
Status:
Malicious
First seen:
2026-04-16 14:16:37 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fmov72tytcsbpxqwxfv6v3vjx3iedrrkokrdvjm6sepsp5ugadpa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery installer persistence rat
Link:
https://tria.ge/reports/260508-qlc4bads3q/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Family: Remcos
Malware Config
C2 Extraction:
130.12.182.113:2404
Unpacked files
SH256 hash:
2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de
MD5 hash:
9494a2871a5782e1c3044e2dc8784282
SHA1 hash:
daa5bcb603981597c9e7cb17455b0a3dd69615b7
Link:
https://www.unpac.me/results/bc430742-666c-41bc-9433-ca22b7d70314/
SH256 hash:
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042
MD5 hash:
12b140583e3273ee1f65016becea58c4
SHA1 hash:
92df24d11797fefd2e1f8d29be9dfd67c56c1ada
Link:
https://www.unpac.me/results/bc430742-666c-41bc-9433-ca22b7d70314/
SH256 hash:
b2699fdfdab6a018fcc972806d12f71972de1861660bb6578935d62b1da06504
MD5 hash:
3cea4c9994912d8f3c3e8b6a814e810e
SHA1 hash:
c48d34a0981d4ab576c7a3ab566f5ddb94af5d86
Link:
https://www.unpac.me/results/bc430742-666c-41bc-9433-ca22b7d70314/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/2b1d5fea7898a417de16b96beaeea9bed041c62a72a23aa59e911f27f68600de

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
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

Cape
Cape
https://www.capesandbox.com/analysis/65271/

Comments