MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d3b837c6df7e17d6f6ff9c20066fa5b0064408935d62bacdd4c9b5791002b941. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d3b837c6df7e17d6f6ff9c20066fa5b0064408935d62bacdd4c9b5791002b941
SHA3-384 hash: 9ec04946110eab9211c247ff36cff03c14f85e84426efd7279e0d0482ede32f61403d1203c7b171c8086aafa59639f00
SHA1 hash: 303fb9261c4279cff64f973081d1b339c2fde73e
MD5 hash: 007853972dfeabc5d367f853fa62a59a
humanhash: wyoming-sixteen-monkey-eight
File name:Invoice and documents.doc
Download: download sample
Signature GuLoader
Create hunting rule
File size:441'031 bytes
First seen:2020-09-21 07:31:56 UTC
Last seen:2020-09-21 12:20:03 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 12288:p7JPNsBWlCc2avIlG+cQWUL5TJAbjTDh/9jN6eHFvCIkaHryjF6P:zFb1+ZWUL5TJAh/9jsecYHryjg
TLSH 1094AEF875047DE6666F576FDE96BCD803A626239ACBA4CC8064B7C305A3375EE02C05
Reporter cocaman
Tags:CVE-2017-11882 doc GuLoader


Avatar
cocaman
Malicious email (T1566.001)
From: "Paramountbd (Kareem Organic Foods International)<azim@paramountbd.com>"
Received: "from paramountbd.com (unknown [213.227.154.247]) "
Date: "21 Sep 2020 04:27:12 -0700"
Subject: "RE RE Sales Contract (2020 style sample development)"
Attachment: "Signed Documents .doc"

Intelligence

File Origin
# of uploads :
4
# of downloads :
164
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Sending a custom TCP request by exploiting the app vulnerability
Result
Threat name:
Azorult GuLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/471032
Signature
Binary contains a suspicious time stamp
Contains functionality to hide a thread from the debugger
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Yara detected Azorult
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 287949 Sample: Invoice and documents.doc Startdate: 21/09/2020 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Multi AV Scanner detection for dropped file 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 9 other signatures 2->48 7 EQNEDT32.EXE 12 2->7         started        12 WINWORD.EXE 291 31 2->12         started        process3 dnsIp4 40 www.uttaranchaltoday.com 172.67.176.142, 443, 49167 CLOUDFLARENETUS United States 7->40 30 C:\Users\user\AppData\Roaming\hfoewnmm.exe, PE32 7->30 dropped 32 C:\Users\user\AppData\...\linkscry[1].exe, PE32 7->32 dropped 58 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->58 14 hfoewnmm.exe 7->14         started        file5 signatures6 process7 signatures8 60 Tries to detect Any.run 14->60 62 Hides threads from debuggers 14->62 64 Contains functionality to hide a thread from the debugger 14->64 17 hfoewnmm.exe 61 14->17         started        process9 dnsIp10 34 officestore.co.id 103.247.10.55, 49170, 80 RUMAHWEB-AS-IDRumahwebIndonesiaCVID Indonesia 17->34 36 onedrive.live.com 17->36 38 hqcplw.bl.files.1drv.com 17->38 22 C:\Users\user\AppData\...\vcruntime140.dll, PE32 17->22 dropped 24 C:\Users\user\AppData\Local\...\ucrtbase.dll, PE32 17->24 dropped 26 C:\Users\user\AppData\Local\...\softokn3.dll, PE32 17->26 dropped 28 45 other files (none is malicious) 17->28 dropped 50 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->50 52 Tries to steal Instant Messenger accounts or passwords 17->52 54 Tries to steal Mail credentials (via file access) 17->54 56 4 other signatures 17->56 file11 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d3b837c6df7e17d6f6ff9c20066fa5b0064408935d62bacdd4c9b5791002b941/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-09-21 02:44:57 UTC
File Type:
Document
Extracted files:
2
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Result
Malware family:
azorult
Create hunting rule
Score:
  10/10
Tags:
trojan infostealer family:azorult spyware discovery
Link:
https://tria.ge/reports/200921-cyq98kbxdj/
Behaviour
Checks processor information in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks installed software on the system
JavaScript code in executable
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blacklisted process makes network request
Executes dropped EXE
Azorult
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/d3b837c6df7e17d6f6ff9c20066fa5b0064408935d62bacdd4c9b5791002b941

File information

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

Malspam

GuLoader

Word file doc d3b837c6df7e17d6f6ff9c20066fa5b0064408935d62bacdd4c9b5791002b941

(this sample)

  
Delivery method
Distributed via e-mail attachment

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