MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340
SHA3-384 hash: 637acb65249501cd8fadf1863e55eb9e09e2db4f12a302f609eeb1b77db6941b4650bf759268248a187f65d014fab65e
SHA1 hash: 3cb9e4978cdb7e817b769ed4f13eadeac76c0014
MD5 hash: 038db1fe98b190bdb85793f6b39bbdd8
humanhash: oxygen-mountain-magazine-twelve
File name:Purchase Order and Contract Agreement Namtip THAI CO.doc
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:3'330'175 bytes
First seen:2021-01-20 06:37:29 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:RgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeSvRQgeC:GHHHHHHHHHHHHHHHHHHHHHHHHcy
TLSH D9F501E85210A2C1CA5B3F435764B4C9232BF877C8E5058DF659EBF777EA286EC05884
Reporter abuse_ch
Tags:AveMariaRAT CVE-2017-11882 doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: business93-3.web-hosting.com
Sending IP: 162.0.209.183
From: Mrs Vinu K Ramachandran <sales@namtip.biz>
Subject: Business Notification
Attachment: Purchase Order and Contract Agreement Namtip THAI CO.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
185
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order and Contract Agreement Namtip THAI CO.doc
Verdict:
Malicious activity
Analysis date:
2021-01-20 06:50:26 UTC
Tags:
ole-embedded opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/bdf81119-5777-43e3-b78e-e167f1dc418a

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

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._E_R_N_E_L_3_2_OADLIBRARYW_S_ETPROCADDRESS_.200622.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a process with a hidden window
Deleting a recently created file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Enabling autorun by creating a file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340/results/dashboard
Result
Threat name:
AveMaria
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/585851
Signature
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
Drops PE files to the user root directory
Hides that the sample has been downloaded from the Internet (zone.identifier)
Increases the number of concurrent connection per server for Internet Explorer
Injects a PE file into a foreign processes
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: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Program Location Process Starts
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 steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected AveMaria stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 341962 Sample: Purchase Order and Contract... Startdate: 20/01/2021 Architecture: WINDOWS Score: 100 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for dropped file 2->59 61 Sigma detected: Scheduled temp file as task from temp location 2->61 63 15 other signatures 2->63 9 EQNEDT32.EXE 11 2->9         started        14 WINWORD.EXE 291 26 2->14         started        process3 dnsIp4 45 k-t.icu 162.0.209.181, 49165, 80 ACPCA Canada 9->45 41 C:\Users\user\AppData\Local\...\cj[1].exe, PE32 9->41 dropped 43 C:\Users\Public\69577.exe, PE32 9->43 dropped 77 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 9->77 16 69577.exe 1 8 9->16         started        file5 signatures6 process7 file8 35 C:\Users\user\AppData\Roaming\bgESXlmV.exe, PE32 16->35 dropped 37 C:\Users\user\AppData\Local\...\tmpD376.tmp, XML 16->37 dropped 49 Multi AV Scanner detection for dropped file 16->49 51 Machine Learning detection for dropped file 16->51 53 Contains functionality to inject threads in other processes 16->53 55 3 other signatures 16->55 20 69577.exe 4 4 16->20         started        24 schtasks.exe 16->24         started        signatures9 process10 file11 39 C:\ProgramData\images.exe, PE32 20->39 dropped 65 Increases the number of concurrent connection per server for Internet Explorer 20->65 67 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->67 26 images.exe 2 20->26         started        signatures12 process13 signatures14 69 Multi AV Scanner detection for dropped file 26->69 71 Machine Learning detection for dropped file 26->71 73 Contains functionality to inject threads in other processes 26->73 75 3 other signatures 26->75 29 images.exe 4 26->29         started        33 schtasks.exe 26->33         started        process15 dnsIp16 47 79.134.225.79, 49166, 5300 FINK-TELECOM-SERVICESCH Switzerland 29->47 79 Tries to steal Mail credentials (via file access) 29->79 81 Tries to harvest and steal browser information (history, passwords, etc) 29->81 signatures17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-01-19 22:49:41 UTC
AV detection:
9 of 46 (19.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rcj2lqr7bgzffmcsz6x23tqqmxszgta7fb32jii6tbdh7lxaknaa._file
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:warzonerat infostealer rat
Link:
https://tria.ge/reports/210120-a8p8lz63de/
Behaviour
Creates scheduled task(s)
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Warzone RAT Payload
WarzoneRat, AveMaria
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/8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340

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_EXPLOIT_CVE_2017_8759_2
Create hunting rule
Author:ditekSHen
Description:detects CVE-2017-8759 weaponized RTF documents.
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.

File information

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

Malspam

AveMariaRAT

Word file doc 8893a5c23f09b252b052cfafadce1065e5934c1f2877a4a11e98467faee05340

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments