MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 99577d4554ff7f8f9c98b9fd9c249f6aab4dccb47142466b070fd6d33d641e4e. 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: 17
Maldoc score: 23
| SHA256 hash: | 99577d4554ff7f8f9c98b9fd9c249f6aab4dccb47142466b070fd6d33d641e4e |
|---|---|
| SHA3-384 hash: | a94320eef56de6ba2bef35f6e2b98aa864dc6563e7b5e79caec742ef55d2fd0cb9d34c0100ee16c1e059f24741ae6040 |
| SHA1 hash: | 4943e12bea20024937b890a289da2602a111a547 |
| MD5 hash: | 0446015a22e4778816e2ccc64ac17a9b |
| humanhash: | pasta-august-magnesium-alpha |
| File name: | Estado.de.cuenta.xls |
| Download: | download sample |
| Signature | AveMariaRAT |
| File size: | 68'096 bytes |
| First seen: | 2024-12-10 16:56:24 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 1536:BYxEtjPOtioVjDGUU1qfDlaGGx+cL2QnA5Xo4inBGp9tRG52yriv+L:BYxEtjPOtioVjDGUU1qfDlaGGx+cL2QU |
| Threatray | 2'847 similar samples on MalwareBazaar |
| TLSH | T11263D751374DC49AD91847754FE2C6EAAF36BC109F5A430B3258B32F2E75EA0C92361A |
| TrID | 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4) 26.7% (.XLS) Microsoft Excel sheet (32500/1/3) 20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2) 6.5% (.) Generic OLE2 / Multistream Compound (8000/1) |
| Magika | xls |
| Reporter |  abuse_ch |
| Tags: | AveMariaRAT xls |
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: 23 |
OLE dump
MalwareBazaar was able to identify 17 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 107 bytes | CompObj |
| 2 | 244 bytes | DocumentSummaryInformation |
| 3 | 208 bytes | SummaryInformation |
| 4 | 41460 bytes | Workbook |
| 5 | 637 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 128 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 825 bytes | _VBA_PROJECT_CUR/VBA/Module1 |
| 8 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 9 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 10 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 11 | 6756 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 12 | 4667 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 13 | 1566 bytes | _VBA_PROJECT_CUR/VBA/__SRP_0 |
| 14 | 221 bytes | _VBA_PROJECT_CUR/VBA/__SRP_1 |
| 15 | 508 bytes | _VBA_PROJECT_CUR/VBA/__SRP_2 |
| 16 | 422 bytes | _VBA_PROJECT_CUR/VBA/__SRP_3 |
| 17 | 615 bytes | _VBA_PROJECT_CUR/VBA/dir |
OLE vba
MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:
| Type | Keyword | Description |
|---|---|---|
| AutoExec | Workbook_Open | Runs when the Excel Workbook is opened |
| Suspicious | Open | May open a file |
| Suspicious | Write | May write to a file (if combined with Open) |
| Suspicious | adodb.stream | May create a text file |
| Suspicious | SaveToFile | May create a text file |
| Suspicious | Shell | May run an executable file or a system command |
| Suspicious | WScript.Shell | May run an executable file or a system command |
| Suspicious | CreateObject | May create an OLE object |
| Suspicious | Shell.Application | May run an application (if combined with CreateObject) |
| Suspicious | microsoft.xmlhttp | May download files from the Internet |
| Suspicious | Chr | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
447
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Estado.de.cuenta.xls
Verdict:
Malicious activity
Analysis date:
2024-12-10 17:00:41 UTC
Tags:
macros macros-on-open
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
94.9%
Tags:
office macro micro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
Сreating synchronization primitives
Connection attempt to an infection source by exploiting the app vulnerability
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Query of malicious DNS domain
Connection attempt by exploiting the app vulnerability
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending a TCP request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Behaviour
BlacklistAPI detected
Document image
Image:
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
dropper macros macros-on-open packed
Verdict:
Malicious
Labled as:
Msoffice/malicious_confidence_100%
Gathering data
Result
Verdict:
MALICIOUS
Link:
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Shell.Application Object
Detected the instantiation of Shell Application object within the macro.
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
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains process injector
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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 with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with hexadecimal encoded strings
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
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
Office process drops PE file
Sigma detected: File With Uncommon Extension Created By An Office Application
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Yara detected AveMaria stealer
Yara detected UACMe UAC Bypass tool
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Threat name:
Script-Macro.Downloader.Heuristic
Status:
Malicious
First seen:
2024-12-10 16:57:06 UTC
File Type:
Document
Extracted files:
26
AV detection:
14 of 38 (36.84%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
avemaria
Similar samples:
+ 2'837 additional samples on MalwareBazaar
Result
Malware family:
warzonerat
Score:
10/10
Tags:
family:warzonerat discovery infostealer macro macro_on_action persistence rat
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Warzone RAT payload
WarzoneRat, AveMaria
Warzonerat family
Malware Config
C2 Extraction:
dns.stipamana.com:5219
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Malware family:
Warzone
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | informational_win_ole_protected |
|---|---|
| Author: | Jeff White (karttoon@gmail.com) @noottrak |
| Description: | Identify OLE Project protection within documents. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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