MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60. 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: 15


Maldoc score: 7


Intelligence 15 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60
SHA3-384 hash: 9d5b67476e558496c5d975ef356361ba73749acdcfdbd27db2f2294148232aa41272a0eb017033c0de190cd12869a5ed
SHA1 hash: d3fa33c3d86d0456a8117fe29ea700845d1f09b8
MD5 hash: 2bf10526c5c623167810832f6b0bca6c
humanhash: london-xray-sixteen-mockingbird
File name:zapitvane.doc
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:204'288 bytes
First seen:2023-09-07 16:01:23 UTC
Last seen:Never
File type:Word file doc
MIME type:application/msword
ssdeep 3072:CAN+svPwMrFoXiURMf8yS/TSTIs6sCbMD3itIm0QqgxJi+C:D33JodRU8yS/dLsZDyp0QZC
TLSH T19B14F117F3C1C247E56A533106C3D68E7B69BE6AAE26831F7202371EB8B6331CD15256
TrID 52.6% (.DOC) Microsoft Word document (30000/1/2)
33.3% (.DOC) Microsoft Word document (old ver.) (19000/1/2)
14.0% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:AveMariaRAT 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 id
Maldoc score: 7
OLE dump

MalwareBazaar was able to identify 10 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
24096 bytesDocumentSummaryInformation
34096 bytesSummaryInformation
47038 bytes1Table
5369 bytesMacros/PROJECT
641 bytesMacros/PROJECTwm
72072 bytesMacros/VBA/ThisDocument
82499 bytesMacros/VBA/_VBA_PROJECT
9512 bytesMacros/VBA/dir
10177512 bytesWordDocument
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecDocument_OpenRuns when the Word or Publisher document is opened
IOCubc6d.exeExecutable file name
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousexecMay run an executable file or a system
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
339
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
avemaria
Create hunting rule
ID:
1
File name:
zapitvane.doc
Verdict:
Malicious activity
Analysis date:
2023-09-07 16:04:25 UTC
Tags:
macros-on-open warzone rat remote avemaria
Link:
https://app.any.run/tasks/44195319-1406-46f6-b81f-210381e403c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
TwinWave.EvilDoc.GOStringGamesBangBang.20200908.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ICEDIDOGORiginalGangsterGOMethodsM1.20200923.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.HTTPS
Create hunting rule

TwinWave.EvilDoc.CMDObfusGamesCarrotAndStick.M1.20220128.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Doc.blankopen.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Launching a process
DNS request
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Word File with Macro
Link:
https://app.docguard.net/a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60/results/dashboard
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open packed powershell
Link:
https://www.filescan.io/uploads/64f9f3fb2a262962b796c354/reports/8c16d430-8a9f-4e8c-9fde-a9776284ca2e/overview
Verdict:
Malicious
Labled as:
Valyria
Link:
https://www.hybrid-analysis.com/sample/a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60
Label:
Malicious
Suspicious Score:
8.9/10
Score Malicious:
9%
Score Benign:
1%
Link:
https://www.malware.ai/gui/files/?id=e1670155-2e5f-4a93-9833-d6e78fbe28d0
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Result
Threat name:
AveMaria, UACMe
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1305514
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Contains functionality to check if Internet connection is working
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
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with base64 encoded strings
Document contains an embedded VBA with functions possibly related to WSH operations (process, registry, environment, or keystrokes)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Found evasive API chain checking for user administrative privileges
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
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AveMaria stealer
Yara detected UACMe UAC Bypass tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1305514 Sample: zapitvane.doc Startdate: 07/09/2023 Architecture: WINDOWS Score: 100 112 transfer.sh 2->112 130 Snort IDS alert for network traffic 2->130 132 Malicious sample detected (through community Yara rule) 2->132 134 Antivirus / Scanner detection for submitted sample 2->134 136 12 other signatures 2->136 11 WINWORD.EXE 8 15 2->11         started        14 taskeng.exe 1 2->14         started        signatures3 process4 signatures5 162 Obfuscated command line found 11->162 16 cmd.exe 11->16         started        18 cmd.exe 11->18         started        20 cmd.exe 11->20         started        27 9 other processes 11->27 22 bupo.exe 14->22         started        25 bupo.exe 14->25         started        process6 signatures7 29 powershell.exe 12 5 16->29         started        34 powershell.exe 18->34         started        36 powershell.exe 20->36         started        138 Multi AV Scanner detection for dropped file 22->138 140 Contains functionality to hide user accounts 22->140 142 Machine Learning detection for dropped file 22->142 38 cmd.exe 22->38         started        46 3 other processes 22->46 144 Writes to foreign memory regions 25->144 146 Allocates memory in foreign processes 25->146 148 Injects a PE file into a foreign processes 25->148 40 powershell.exe 27->40         started        42 powershell.exe 27->42         started        44 powershell.exe 27->44         started        48 6 other processes 27->48 process8 dnsIp9 116 transfer.sh 144.76.136.153, 443, 49165, 49166 HETZNER-ASDE Germany 29->116 110 C:\Users\Public\ubc6d.exe, PE32 29->110 dropped 164 Drops PE files to the user root directory 29->164 166 Powershell drops PE file 29->166 50 ubc6d.exe 1 29->50         started        53 ubc6d.exe 34->53         started        55 ubc6d.exe 36->55         started        57 schtasks.exe 38->57         started        59 ubc6d.exe 40->59         started        61 ubc6d.exe 42->61         started        63 ubc6d.exe 44->63         started        65 ubc6d.exe 48->65         started        67 4 other processes 48->67 file10 signatures11 process12 signatures13 118 Multi AV Scanner detection for dropped file 50->118 120 Contains functionality to hide user accounts 50->120 122 Machine Learning detection for dropped file 50->122 69 vbc.exe 3 5 50->69         started        73 4 other processes 50->73 124 Writes to foreign memory regions 53->124 126 Allocates memory in foreign processes 53->126 128 Injects a PE file into a foreign processes 53->128 76 4 other processes 53->76 78 5 other processes 55->78 80 4 other processes 59->80 82 4 other processes 61->82 84 4 other processes 63->84 86 4 other processes 65->86 88 16 other processes 67->88 process14 dnsIp15 114 185.225.75.68, 2222, 49167 MAYAKBG Germany 69->114 150 Contains functionality to check if Internet connection is working 69->150 152 Tries to steal Mail credentials (via file / registry access) 69->152 154 Contains functionality to inject threads in other processes 69->154 160 6 other signatures 69->160 108 C:\Users\user\AppData\Roaming\bupo\bupo.exe, PE32 73->108 dropped 156 Uses schtasks.exe or at.exe to add and modify task schedules 73->156 90 schtasks.exe 73->90         started        158 Contains functionality to hide user accounts 76->158 92 schtasks.exe 76->92         started        94 conhost.exe 76->94         started        96 schtasks.exe 78->96         started        98 schtasks.exe 80->98         started        100 schtasks.exe 82->100         started        102 schtasks.exe 84->102         started        104 schtasks.exe 86->104         started        106 4 other processes 88->106 file16 signatures17 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60/
Threat name:
Win32.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2023-09-07 10:10:37 UTC
File Type:
Document
Extracted files:
16
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vffyxm3hapvcrc5og6gy3n2pcffdv27u2bgjnld7lzlb5csolvqa._file
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:warzonerat infostealer macro macro_on_action rat
Link:
https://tria.ge/reports/230907-tgryfsbd4v/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Warzone RAT payload
Process spawned unexpected child process
WarzoneRat, AveMaria
Malware Config
C2 Extraction:
185.225.75.68:2222
Malware family:
Warzone
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a94b8bb36703/report/overview.html
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/a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:office_document_vba
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/

File information

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

Malspam

AveMariaRAT

Word file doc a94b8bb36703ea288bae378d8db74f114a3aebf4d04c96ac7f5e561e8a4e5d60

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments