MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90. 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 2 File information Comments 1

SHA256 hash:	511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90
SHA3-384 hash:	94d8f697069a8c90deec2beaae0b4fbbd703f0e34c19718551449b00c72f651738b31066cf6139a3246b0cdcb519a1cd
SHA1 hash:	8fc2d45feb7a9db0dd86c4c44e929af5711283b1
MD5 hash:	ae15e353edb611c651dc6b29ed9b73bc
humanhash:	minnesota-east-five-william
File name:	ae15e353edb611c651dc6b29ed9b73bc
Download:	download sample
Signature	GuLoader Create hunting rule
File size:	25'197 bytes
First seen:	2023-06-13 07:25:51 UTC
Last seen:	Never
File type:	rtf
MIME type:	text/rtf
ssdeep	384:COQQtqf51gcfc6i9qAavyxepZ0Sy48MLh5ALBX1Xsq25Wk11+uPEdZubMBVzoGuv:COQQe/BTDnl5ALB1Xsq25FEdZucVzAlV
TLSH	T1EDB24C565B8C5C61E36AE8BB475DA10F19BCF22230C215C4BCACE2743B6D14D4B6B2F8
Reporter	zbetcheckin
Tags:	CVE-2017-11882 GuLoader rtf

Intelligence

File Origin

# of uploads :

# of downloads :

115

Origin country :

Vendor Threat Intelligence

Malware family:

guloader

ID:

File name:

ae15e353edb611c651dc6b29ed9b73bc

Verdict:

Malicious activity

Analysis date:

2023-06-13 07:27:12 UTC

Tags:

opendir exploit cve-2017-11882 loader guloader

Link:

https://app.any.run/tasks/9abc882a-68da-4e3f-b32b-76a3406deabd

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

Sanesecurity.Malware.28765.RtfHeur.ObjUpd.UNOFFICIAL

Sanesecurity.Malware.29030.RtfHeur.UNOFFICIAL

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Searching for synchronization primitives

Launching a process

Creating a window

Creating a file

Сreating synchronization primitives

Creating a file in the %temp% subdirectories

Sending an HTTP GET request to an infection source by exploiting the app vulnerability

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

RTF File

Link:

https://app.docguard.net/511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

embedequation exploit lolbin shell32.dll shellcode

Link:

https://www.filescan.io/uploads/64881a0cc6414862d206ce33/reports/e8deb086-567f-40cc-8fd4-dd13076422c0/overview

Verdict:

Malicious

Labled as:

CVE-2017-11882

Link:

https://www.hybrid-analysis.com/sample/511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90

Result

Verdict:

MALICIOUS

Result

Threat name:

GuLoader

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1253409

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

Drops PE files to the user root directory

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Office equation editor drops PE file

Office equation editor establishes network connection

Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)

Shellcode detected

Sigma detected: EQNEDT32.EXE connecting to internet

Sigma detected: File Dropped By EQNEDT32EXE

Tries to detect virtualization through RDTSC time measurements

Yara detected GuLoader

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90/

Threat name:

Document-Word.Exploit.CVE-2017-11882

Status:

Malicious

First seen:

2023-06-07 12:05:43 UTC

File Type:

Document

Extracted files:

AV detection:

14 of 24 (58.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kekwtnxc4glikcczd5tgjsoapuewrycime62a4r6u4qy3mrz3oia._file

Result

Malware family:

lokibot

Score:

10/10

Tags:

family:guloader family:lokibot collection downloader spyware stealer trojan

Link:

https://tria.ge/reports/230613-h9hppsfd36/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

NSIS installer

Office loads VBA resources, possible macro or embedded object present

Enumerates physical storage devices

Drops file in Windows directory

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Checks QEMU agent file

Executes dropped EXE

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Guloader,Cloudeye

Lokibot

Malware Config

C2 Extraction:

http://194.180.48.58/black/five/fre.php
http://kbfvzoboss.bid/alien/fre.php
http://alphastand.trade/alien/fre.php
http://alphastand.win/alien/fre.php
http://alphastand.top/alien/fre.php

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/511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90

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:	INDICATOR_RTF_MalVer_Objects Create hunting rule
Author:	ditekSHen
Description:	Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.

Rule name:	SUSP_INDICATOR_RTF_MalVer_Objects Create hunting rule
Author:	ditekSHen
Description:	Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:	https://github.com/ditekshen/detection

File information

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

Web download

GuLoader

rtf 511569b6e2e1968508591f6664c9c07d0968e048613da0723ea7218db239db90

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2658924/

Comments

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zbet commented on 2023-06-13 07:25:52 UTC

url : hxxp://192.3.176.146/cv/ii/iiiiiiiiiiiiiiiiiiiiiiiiiiiiiii%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23iiiiiiiiiiiiiiiiiiiiiiiii.doc