MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5. 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: 10


Maldoc score: 13


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5
SHA3-384 hash: c16d41b043bedd48ccb81b92626bdbb7361e2ef85cf3d278beba3d80667e1667f1690f7756acd21115a63d58a96fb543
SHA1 hash: f9fb21d7ca217bd86b833b416629681c9bd8934b
MD5 hash: c558218fab28a77dc596dad19e0851fd
humanhash: equal-xray-wolfram-steak
File name:INVOICE_20211216-GRDE2F1.xlsm
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:75'009 bytes
First seen:2021-12-20 08:39:36 UTC
Last seen:2021-12-20 10:35:54 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:Nho/yQFcKv+aWRF2VoN2VUt36UKgAgA0o43NN:Na6scKyRF2VoN2VUt9Kgc0h3j
TLSH T19073BE65C3697974E24E607652F408EB710D119783C0BA0F39ACF1EA4F0136A8E7F5EA
Reporter abuse_ch
Tags:AveMariaRAT xlsm

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: 13
OLE dump

MalwareBazaar was able to identify 13 sections in this file using oledump:

Section IDSection sizeSection name
A1596 bytesPROJECT
A2119 bytesPROJECTwm
A3991 bytesVBA/Learn more
A4985 bytesVBA/Start
A55528 bytesVBA/ThisWorkbook
A6988 bytesVBA/Workbook
A72449 bytesVBA/_VBA_PROJECT
A81329 bytesVBA/__SRP_0
A9221 bytesVBA/__SRP_1
A101092 bytesVBA/__SRP_2
A11337 bytesVBA/__SRP_3
A12292 bytesVBA/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:

TypeKeywordDescription
AutoExecWorkbook_ActivateRuns when the Excel Workbook is opened
IOCBixkcozkkemqyslgmpvwExecutable file name code and P-code are different, this may have been used to hide malicious code
SuspiciousOpenMay open a file
SuspiciousOutputMay write to a file (if combined with Open)
SuspiciousShellMay run an executable file or a system command
SuspiciousStrReverseMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
2
# of downloads :
155
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/215372/
Detection(s):
MiscreantPunch.EvilMacro.PSHREVRSH.M1.UNOFFICIAL
Create hunting rule

MiscreantPunch.EvilMacro.PSHELLNEWOBJECTw.3.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.SHELL.REV.200317.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.MiscreantsTurnBackTime.20210220.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.POWERSHELL.REV.200317.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.NEW-OBJECT.200322B64.3.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.NEW_OBJECT.200630B64.3.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.HTTPS_.210304B64.8.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CancionDelMariachi.20211020.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.ENV_APPDATA.211028B64.7.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open powershell
Link:
https://www.filescan.io/uploads/61c041698991ba72b38e3446/reports/fe659ff3-8da2-45ed-a3b9-fd34e4d0c7c0/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
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.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
External Relationship Element
Document contains an externally hosted relationship, which fetches further content.
Result
Threat name:
AveMaria UACMe
Create hunting rule
Detection:
malicious
Classification:
phis.bank.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/910099
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for dropped file
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
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Document contains an embedded VBA macro which may execute processes
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
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
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious encrypted Powershell command line found
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Potential dropper URLs found in powershell memory
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Powershell Defender Exclusion
Sigma detected: Powershell Used To Disable Windows Defender AV Security Monitoring
Sigma detected: Suspicious Encoded PowerShell Command Line
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 / registry access)
Writes to foreign memory regions
Yara detected AveMaria stealer
Yara detected UACMe UAC Bypass tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 542595 Sample: INVOICE_20211216-GRDE2F1.xlsm Startdate: 20/12/2021 Architecture: WINDOWS Score: 100 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for dropped file 2->66 68 17 other signatures 2->68 10 EXCEL.EXE 77 23 2->10         started        process3 file4 52 C:\Users\user\...\Bixkcozkkemqyslgmpvwuri.bat, ASCII 10->52 dropped 54 C:\Users\...\~$INVOICE_20211216-GRDE2F1.xlsm, data 10->54 dropped 56 C:\...\INVOICE_20211216-GRDE2F1.xlsm (copy), Microsoft 10->56 dropped 80 Document exploit detected (creates forbidden files) 10->80 14 cmd.exe 10->14         started        signatures5 process6 signatures7 90 Malicious encrypted Powershell command line found 14->90 92 Encrypted powershell cmdline option found 14->92 17 powershell.exe 16 7 14->17         started        process8 dnsIp9 58 www.qqqformula.co.za 165.73.84.106, 443, 49165 AfrihostZA South Africa 17->58 44 C:\Users\user\...\Ktaqftbffhqhoxzyblssi.exe, PE32 17->44 dropped 70 Powershell drops PE file 17->70 22 Ktaqftbffhqhoxzyblssi.exe 1 5 17->22         started        file10 signatures11 process12 file13 46 C:\Users\user\AppData\Local\...\WinRAR.exe, PE32 22->46 dropped 48 C:\Users\user\...\Ktaqftbffhqhoxzyblssi.exe, PE32 22->48 dropped 50 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 22->50 dropped 72 Antivirus detection for dropped file 22->72 74 Creates an undocumented autostart registry key 22->74 76 Machine Learning detection for dropped file 22->76 78 3 other signatures 22->78 26 Ktaqftbffhqhoxzyblssi.exe 3 6 22->26         started        30 AdvancedRun.exe 1 22->30         started        32 AdvancedRun.exe 1 22->32         started        34 powershell.exe 6 22->34         started        signatures14 process15 dnsIp16 60 154.0.164.36, 49166, 5200 AfrihostZA South Africa 26->60 82 Antivirus detection for dropped file 26->82 84 Tries to steal Mail credentials (via file / registry access) 26->84 86 Machine Learning detection for dropped file 26->86 88 11 other signatures 26->88 36 powershell.exe 7 26->36         started        38 cmd.exe 26->38         started        40 AdvancedRun.exe 30->40         started        42 AdvancedRun.exe 32->42         started        signatures17 process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5/
Threat name:
Document-Excel.Downloader.Powdow
Create hunting rule
Status:
Malicious
First seen:
2021-12-18 09:06:11 UTC
File Type:
Document
Extracted files:
54
AV detection:
17 of 43 (39.53%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ruk7vxzfrb6czf2okimrjo34xj3cvdydwhexuk6idghj7okniwsq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro
Link:
https://tria.ge/reports/211220-kkww5saac2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Deletes itself
Blocklisted process makes network request
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://www.qqqformula.co.za/works/RICH.pif
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/8d15fadf25887c2c974e521914bb7cba762a8f03b1c97a2bc8198e9fb94d45a5

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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/215372/

Comments