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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20
SHA3-384 hash: 0199847cf81ca8282d76daa6d52aaa5eaade1838085f48c8b0bf32bc1f29b2590bd09d7f5ca3472e98f23bb980cde7b8
SHA1 hash: d57cb6a75f63480c2cfa8cc95a1663c93fac79bd
MD5 hash: ec74202730ea2572960cb1ff4396563c
humanhash: violet-uranus-grey-green
File name:1207651.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'211'808 bytes
First seen:2026-05-20 17:04:13 UTC
Last seen:2026-05-20 17:47:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (326 x GuLoader, 65 x AgentTesla, 63 x RemcosRAT)
ssdeep 24576:RTMn6rH7RZZ/fSbjZ0v5zYACxeEzpVessMBFa8QRQt5bgw/msswwYz1x:RTMn6rH9ZZ/CCvyXsmpV7sMXPQRQt5hz
Threatray 2'386 similar samples on MalwareBazaar
TLSH T116452283BE1D90DADD6C08335837859B5A327D3EC9D41E9623C0B7AD9871122AB1F1F6
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 746c6c6c6c6c6c60 (5 x RemcosRAT, 3 x GuLoader, 1 x NanoCore)
Reporter TomU
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Handelsordrerne
Issuer:Handelsordrerne
Algorithm:sha256WithRSAEncryption
Valid from:2025-11-06T07:31:53Z
Valid to:2026-11-06T07:31:53Z
Serial number: 14d60ed10cb905cffc132c839e15ce179f5394cf
Thumbprint Algorithm:SHA256
Thumbprint: 6b9d7b262b1122df332790b96524cd2223a1c570494722dbd121cd1c0a5b58bb
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
95
Origin country :
CH CH
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/810a3589-8e8f-4b31-bdf9-f20f7ea168f8/
Malware family:
n/a
ID:
1
File name:
200fdae23e3f6a42ef14e932e571f84637bb93bcf7127520118e9f76e54287c4.zip
Verdict:
No threats detected
Analysis date:
2025-12-07 22:34:38 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/05cc174c-6ad4-4311-83aa-1aa3502f2d56

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/66760/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0decaf4f2b29ce0401e540
Tags:
virus agent blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %temp% subdirectories
Creating a file
Delayed reading of the file
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending an HTTP GET request
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug guloader installer installer installer-heuristic microsoft_visual_cc nsis reconnaissance signed
Link:
https://www.filescan.io/uploads/6a0dec7e861ee596e6419f80/reports/44cf3c7d-9975-43b7-b4d3-ae052388eb2a/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-07T18:28:00Z UTC
Last seen:
2026-05-21T22:39:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5711c0d5-3ecb-41c8-bc0d-8aff0c6520bc
Score:
93%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-12-07 22:34:39 UTC
File Type:
PE (Exe)
Extracted files:
45
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nphsgnks2woem5rqrw4f3bpvw3b4h7dcbztpaukz42dx7acm7uqa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
30829f3086c52d01a07501ea2ef51c0c94ae8045777e117feb7b41cb0743c421
GuLoader
48caa1c5b9a6b41f64e6f01f74a6ed1623459c064235f772d832153274944fe2
GuLoader
551863be2e92aa2d319a92cda72bc2123233ee3a7e965ee691fd70d88c21d772
GuLoader
60d7ecfa5459d57946bad25c71577ddff454bde012fd802d340830a6a6a4d94f
GuLoader
67fd31f9b85ca5e31e0851c8a5f8f2f36343d884aa3dd7f26d4aa6c5d02b28fe
GuLoader
803d4ec06466ca32c6f4e2dd79d42d8b6b33b858d393f59f3cce2794981d41f8
GuLoader
841bd3307cb1a34c5f6a907217bd09c5e4d9e7500e2863a8cd956793014d5f2e
GuLoader
dd6d8363c2761f77948a54be192dbbe563d2da9dd8f922102547631ccbd05ebb
GuLoader
eadedc1029829676460e4a64eabd39a11f3753767c000d48cc55a584a5e5a143
GuLoader
error
GuLoader
+ 2'376 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/260520-vl64lsew4n/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Unpacked files
SH256 hash:
6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20
MD5 hash:
ec74202730ea2572960cb1ff4396563c
SHA1 hash:
d57cb6a75f63480c2cfa8cc95a1663c93fac79bd
Link:
https://www.unpac.me/results/668963ad-ee0d-4dc7-8bbc-544ba2206c63/
SH256 hash:
6bf9cccd8a600f4d442efe201e8c07b49605ba35f49a4b3ab22fa2641748e156
MD5 hash:
48f3e7860e1de2b4e63ec744a5e9582a
SHA1 hash:
420c64d802a637c75a53efc8f748e1aede3d6dc6
Link:
https://www.unpac.me/results/668963ad-ee0d-4dc7-8bbc-544ba2206c63/
SH256 hash:
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 hash:
564bb0373067e1785cba7e4c24aab4bf
SHA1 hash:
7c9416a01d821b10b2eef97b80899d24014d6fc1
Link:
https://www.unpac.me/results/668963ad-ee0d-4dc7-8bbc-544ba2206c63/
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/6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20

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 6bcf233552d59c4676308db85d85f5b6c3c3fc620e66f05159e6877f804cfd20

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/66760/

Comments