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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b
SHA3-384 hash: 06306cc080f448f95f9d1e03cebb9883b445def863a211ee6ede28758e7570cd1cdece1894bab44960951bd947d0395c
SHA1 hash: e2d339746117bef38985bde6086f3739d69d9264
MD5 hash: 42e1c6649b7535a38b14eae6a77a7d34
humanhash: sad-king-yellow-steak
File name:Payment_Advice.rar
Download: download sample
Signature GuLoader
Create hunting rule
File size:8'511 bytes
First seen:2026-10-14 15:40:37 UTC
Last seen:2026-10-21 21:18:34 UTC
File type: rar
MIME type:application/vnd.rar
ssdeep 192:/ScpWdY/q2FYXZCSuCfDZyIGCcJCbGMF1jfdpkfYENZDwUItkoZ1gUBa9ZBVOn6:/zpWdYD2JuIYIjoCKMnjfKnZaypBcn6
TLSH T18202AF3992C7DB6E48930A9CF871439AC72787E0131DD8976F599DE886F051B1AC3705
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter TomU
Tags:GuLoader rar

Intelligence

File Origin
# of uploads :
8
# of downloads :
59
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Payment Advice.vbe
File size:16'165 bytes
SHA256 hash: 749211ff7d7c1be6b5393c5d94dcb04347d9f4cc7550dccaf787757ee48d1ce9
MD5 hash: 1acf321d71a839afecbb660dff3c3c2c
MIME type:text/plain
Signature GuLoader
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/e6bb2a6b-3cbe-4967-9ee5-ecfc045cf90d/
Detection(s):
SecuriteInfo.com.VBS.DownLoader.4721.1855.32299.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad0da4ff4e17c78f715cb24
Tags:
shell virus sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd lolbin obfuscated
Link:
https://www.filescan.io/uploads/6acfa2acd3bae837b818d84a/reports/d3b484a9-45f9-4dcf-a7a1-0d8a9d7ab429/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b
Verdict:
Malicious
File Type:
rar
First seen:
2026-10-11T12:33:00Z UTC
Last seen:
2026-10-16T13:09:00Z UTC
Hits:
~10000
Link:
https://opentip.kaspersky.com/99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b/results?tab=lookup
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated Rar Archive SOS: 0.32 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/42e1c6649b7535a38b14eae6a77a7d34
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b/
Threat name:
Script-WScript.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-10-11 19:44:32 UTC
File Type:
Binary (Archive)
Extracted files:
1
AV detection:
14 of 38 (36.84%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tfjrqbv4bio4cl7bqw4gkuwsmsrttgz3zr5i37fr7fbavtd4d55q._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection defense_evasion discovery downloader execution privilege_escalation rat
Link:
https://tria.ge/reports/261014-tqnbmaez3q/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Contacts third-party web service commonly abused for C2
Checks computer location settings
Badlisted process makes network request
Family: Guloader,Cloudeye
Family: Remcos
Malware Config
C2 Extraction:
155.103.70.196:2404
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/99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b

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:Guloader_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

rar 99531806bc0a1dc12fe185b86552d264a3399b3bcc7a8dfcb1f9420acc7c1f7b

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments