MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24. 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


AveMariaRAT


Vendor detections: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24
SHA3-384 hash: d799b10320379d73385a7af72de3846401f75675d7136928cfa4ec0e4963466bf92952a0e24aa74db8ccf45e850946eb
SHA1 hash: b8454a38017418c8f3260477fcb4b6308b3a162f
MD5 hash: a32c8ab0f938fdf7f40ed96790952396
humanhash: connecticut-aspen-tennis-louisiana
File name:file
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:2'934 bytes
First seen:2020-12-08 18:29:15 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 48:ccZXfSJfR3pKcG3ycM0tlcksWNFXgOXvpB6aCpVu0qCuVmN2BpTd01BJdomV54G1:ccxS33to/XgOaJf5qCWV7TeJdoUr2A
TLSH 4C51F779221DAC43E55280E7D0AA3CD44497F1B256CE19C1F94CF9A20BB621BEE56443
Reporter fabjer
Tags:AveMariaRAT CVE-2017-11882 doc

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24
Verdict:
Malicious activity
Analysis date:
2020-12-09 14:48:37 UTC
Tags:
exploit CVE-2017-11882 loader trojan stealer rat avemaria
Link:
https://app.any.run/tasks/de4ddb73-8aaf-426a-8d61-3666da7b53a7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._EQUATION.200422.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
Creating a file in the %temp% directory
Sending an HTTP GET request
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
AveMaria
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/558336
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for dropped file
Contains functionality to hide user accounts
Contains functionality to inject threads in other processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal e-mail passwords
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Creates files in alternative data streams (ADS)
Creates processes via WMI
Drops script or batch files to the startup folder
Hides that the sample has been downloaded from the Internet (zone.identifier)
Increases the number of concurrent connection per server for Internet Explorer
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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: Drops script at startup location
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AveMaria stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 328266 Sample: file Startdate: 08/12/2020 Architecture: WINDOWS Score: 100 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for dropped file 2->51 53 Multi AV Scanner detection for dropped file 2->53 55 11 other signatures 2->55 7 EQNEDT32.EXE 12 2->7         started        12 images.exe 5 2->12         started        14 ProgramData:ApplicationData 2 2->14         started        16 2 other processes 2->16 process3 dnsIp4 45 compprotect.com 198.54.116.178, 49165, 80 NAMECHEAP-NETUS United States 7->45 37 C:\Users\user\AppData\Local\Temp\Winrar.exe, PE32 7->37 dropped 39 C:\Users\user\AppData\Local\...\Ok[1].exe, PE32 7->39 dropped 67 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->67 18 Winrar.exe 7 16 7->18         started        47 iphanyi.webredirect.org 160.152.20.213, 5552 Smile-Nigeria-ASNG Nigeria 12->47 41 C:\Users\user\AppData\...\rFvmIVagjBnD.exe, PE32 12->41 dropped 69 Writes to foreign memory regions 12->69 71 Allocates memory in foreign processes 12->71 73 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->73 75 Creates a thread in another existing process (thread injection) 12->75 22 cmd.exe 12->22         started        77 Antivirus detection for dropped file 14->77 79 Multi AV Scanner detection for dropped file 14->79 81 Machine Learning detection for dropped file 14->81 43 C:\Users\user\Desktop\~$file.rtf, data 16->43 dropped 24 WMIC.exe 16->24         started        file5 signatures6 process7 file8 29 C:\Users\user\AppData\...\fFeDMwdFlDrE.exe, PE32 18->29 dropped 31 C:\ProgramData\images.exe, PE32 18->31 dropped 33 C:\ProgramData:ApplicationData, PE32 18->33 dropped 35 2 other malicious files 18->35 dropped 57 Antivirus detection for dropped file 18->57 59 Multi AV Scanner detection for dropped file 18->59 61 Creates files in alternative data streams (ADS) 18->61 65 8 other signatures 18->65 26 images.exe 2 18->26         started        63 Creates processes via WMI 24->63 signatures9 process10 signatures11 83 Antivirus detection for dropped file 26->83 85 Multi AV Scanner detection for dropped file 26->85 87 Machine Learning detection for dropped file 26->87 89 3 other signatures 26->89
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-12-02 10:02:16 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:warzonerat infostealer persistence rat
Link:
https://tria.ge/reports/201208-at67f6n98n/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
NTFS ADS
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Adds Run key to start application
Drops startup file
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Modifies WinLogon for persistence
WarzoneRat, AveMaria
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Exploit
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

AveMariaRAT

Rich Text Format (RTF) rtf 4994e0b1532ec815a5c842d5bd42454c2bf4e99adc0638924545230dda11bc24

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments