MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81. 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: 6


Intelligence 6 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81
SHA3-384 hash: fd7675fd0da45a66e2c024586cd726438a487597e8bd0d2db68306304e5d96bdf3982012dd5a4abac80010686dcd5901
SHA1 hash: 7cd4c7b5cf32ffabcca3bd93322244cae5b81ba3
MD5 hash: dde875f40a8d461f4b98281fa085f7a5
humanhash: bravo-johnny-carbon-potato
File name:CSP Proforma Invoice No 20221220197231 PO CSP20221220101.r22
Download: download sample
Signature GuLoader
Create hunting rule
File size:411'490 bytes
First seen:2023-02-21 09:17:34 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 6144:cllEFZlJ4k1hL6f8M8t14kVIGsY+ALV9KTKCQeOGJw20kPgyU+CI1uar/PJ:jFDJ4k1p8xAvvsf0aQeOIrvgP+CI1fPJ
TLSH T18294238BF6D1AA5C7BD043C9996147B785326C8A9731E38F15035C52CD78D8ABB6CB02
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:GuLoader INVOICE payment r22 rar


Avatar
cocaman
Malicious email (T1566.001)
From: "Daniela Bossi (FINANCE)<lays@elong.com>" (likely spoofed)
Received: "from elong.com (unknown [74.201.28.71]) "
Date: "21 Feb 2023 09:18:24 +0100"
Subject: "FW:(URGENT)invoice resolved & Payment made 20.02.2023"
Attachment: "CSP Proforma Invoice No 20221220197231 PO CSP20221220101.r22"

Intelligence

File Origin
# of uploads :
1
# of downloads :
113
Origin country :
n/a
File Archive Information

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

File name:CSP Proforma Invoice No 20221220197231 PO CSP20221220101.exe
File size:438'127 bytes
SHA256 hash: 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1
MD5 hash: b83b9107362bd9faf2dd74668ccc1780
MIME type:application/x-dosexec
Signature GuLoader
Vendor Threat Intelligence
Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer guloader nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63f48c4b01b99ad33e7ed01f/reports/fff73a06-f8bd-4017-a03b-99199fa197a7/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2023-02-21 02:06:29 UTC
File Type:
Binary (Archive)
Extracted files:
18
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sflvzkgmkplgcw754vtnlum72vzk2n4jf6vkkxxcyzm25gwgxsaq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/230221-md9wjagc8v/
Behaviour
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in System32 directory
Checks installed software on the system
Loads dropped DLL
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.43
Link:
https://yomi.yoroi.company/submissions/91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

GuLoader

rar 91575ca8cc53d6615bfde566d5d19fd572ad37892faaa55ee2c659ae9ac6bc81

(this sample)

GuLoader

Executable exe 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 6518dc835d22e7520ce00460a18304bce53a4dee89b4236dcacf3b4f071868d1

Comments