MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b. 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: 8


Maldoc score: 15


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b
SHA3-384 hash: db8bdf3319f97f9b26aff167ff6e38fe3424864e6c534d250beddb4d227ffb5dcb3717d4d0ec8ccf2377215fb34d3324
SHA1 hash: ccfaba27f5b5b593a80fb4958da067aa59503e8d
MD5 hash: dec66ca313a3724895c6da62d7f35024
humanhash: fillet-lamp-twenty-oven
File name:REMITTANCE SLIP.xlam
Download: download sample
Signature AveMariaRAT
Create hunting rule
File size:18'049 bytes
First seen:2021-09-28 06:24:35 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 384:AKl9pVAcPKwweUe7vI8gKaCTVX7Vj+t0EUQITMaTOC7:AKl/VAo9D7NgKPTl8KkIgjC7
TLSH T10482BF1DD2C2EE56D3157A3DD40D09A1A81436C9C153F9BE7C0EAF7D66C07EB4A890C9
Reporter cocaman
Tags:AveMariaRAT xlam xlsx


Avatar
cocaman
Malicious email (T1566.001)
From: ""michelle" <michelle.higgins@theipsgroup.com>" (likely spoofed)
Received: "from 193.169.253.114 (unknown [193.169.253.114]) "
Date: "Mon, 27 Sep 2021 19:59:27 -0700"
Subject: "REMITTANCE SLIP"
Attachment: "REMITTANCE SLIP.xlam"

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: 15
OLE dump

MalwareBazaar was able to identify 12 sections in this file using oledump:

Section IDSection sizeSection name
A1465 bytesPROJECT
A277 bytesPROJECTwm
A3991 bytesVBA/Sheet1
A41267 bytesVBA/ThisWorkbook
A52900 bytesVBA/_VBA_PROJECT
A61602 bytesVBA/__SRP_0
A7189 bytesVBA/__SRP_1
A8259 bytesVBA/__SRP_2
A9284 bytesVBA/__SRP_3
A1010641 bytesVBA/cwle
A11555 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_openRuns when the Excel Workbook is opened
SuspiciousshellMay run an executable file or a system command
SuspiciousWSCript.shellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousChrMay 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 :
1
# of downloads :
154
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
REMITTANCE SLIP.xlam
Verdict:
No threats detected
Analysis date:
2021-09-28 06:25:50 UTC
Tags:
macros macros-on-open
Link:
https://app.any.run/tasks/f3e92a62-0b62-4e4d-a339-de7ff3282b36

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/192376/
Detection(s):
MiscreantPunch.EvilMacro.PSHELLFromB64w.4.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.WSHCROVARCHRMATHLONGGONE.20200524.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD._IEX.210408B64.2.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.STRINGBUILDERCaliNights.20210823.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b/results/dashboard
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b
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.
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
AveMaria UACMe
Create hunting rule
Detection:
malicious
Classification:
expl.evad.phis.troj.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/859538
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to hide a thread from the debugger
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)
Detected unpacking (creates a PE file in dynamic memory)
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
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
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
PowerShell case anomaly found
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Powershell Defender Exclusion
Uses dynamic DNS services
Very long command line found
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: 491967 Sample: REMITTANCE SLIP.xlam Startdate: 28/09/2021 Architecture: WINDOWS Score: 100 76 malatyabrlikorganik.com 2->76 104 Malicious sample detected (through community Yara rule) 2->104 106 Multi AV Scanner detection for submitted file 2->106 108 Yara detected UACMe UAC Bypass tool 2->108 110 12 other signatures 2->110 14 EXCEL.EXE 26 25 2->14         started        18 images.exe 2->18         started        signatures3 process4 dnsIp5 72 C:\Users\user\...\~$REMITTANCE SLIP.xlam, data 14->72 dropped 134 Obfuscated command line found 14->134 136 Very long command line found 14->136 21 cmd.exe 1 14->21         started        78 162.159.134.233, 443, 49817 CLOUDFLARENETUS United States 18->78 80 cdn.discordapp.com 18->80 138 Hides threads from debuggers 18->138 140 Injects a PE file into a foreign processes 18->140 file6 signatures7 process8 signatures9 112 Very long command line found 21->112 114 Encrypted powershell cmdline option found 21->114 116 PowerShell case anomaly found 21->116 24 powershell.exe 26 21->24         started        26 conhost.exe 21->26         started        process10 process11 28 xsy.exe 24->28         started        dnsIp12 88 cdn.discordapp.com 162.159.130.233, 443, 49792 CLOUDFLARENETUS United States 28->88 126 Contains functionality to inject threads in other processes 28->126 128 Contains functionality to steal Chrome passwords or cookies 28->128 130 Contains functionality to steal e-mail passwords 28->130 132 3 other signatures 28->132 32 xsy.exe 28->32         started        36 WerFault.exe 28->36         started        39 xsy.exe 28->39         started        41 xsy.exe 28->41         started        signatures13 process14 dnsIp15 66 C:\ProgramData\images.exe, PE32 32->66 dropped 90 Adds a directory exclusion to Windows Defender 32->90 92 Increases the number of concurrent connection per server for Internet Explorer 32->92 94 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->94 43 images.exe 32->43         started        47 powershell.exe 32->47         started        82 192.168.2.1 unknown unknown 36->82 68 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 36->68 dropped file16 signatures17 process18 dnsIp19 84 162.159.129.233, 443, 49812 CLOUDFLARENETUS United States 43->84 86 cdn.discordapp.com 43->86 118 Detected unpacking (creates a PE file in dynamic memory) 43->118 120 Machine Learning detection for dropped file 43->120 122 Contains functionality to inject threads in other processes 43->122 124 6 other signatures 43->124 49 images.exe 43->49         started        53 WerFault.exe 43->53         started        56 conhost.exe 47->56         started        signatures20 process21 dnsIp22 74 donafriend.ddns.net 51.195.167.0, 49818, 5200 OVHFR France 49->74 96 Writes to foreign memory regions 49->96 98 Allocates memory in foreign processes 49->98 100 Adds a directory exclusion to Windows Defender 49->100 102 2 other signatures 49->102 58 powershell.exe 49->58         started        60 cmd.exe 49->60         started        70 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 53->70 dropped file23 signatures24 process25 process26 62 conhost.exe 58->62         started        64 conhost.exe 60->64         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b/
Threat name:
Document-Excel.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2021-09-27 23:46:34 UTC
AV detection:
20 of 45 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=omyyi23uqzygxmejuyfjrbnvjm34imv7rp6a3zzyk47q2lhljb5q._file
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:warzonerat infostealer macro persistence rat
Link:
https://tria.ge/reports/210928-g6nacaahdm/
Behaviour
Checks processor information in registry
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 FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Downloads MZ/PE file
Executes dropped EXE
Warzone RAT Payload
Process spawned unexpected child process
WarzoneRat, AveMaria
Malware Config
C2 Extraction:
donafriend.ddns.net:5200
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/7331846b7486/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/7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b

File information

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

Malspam

AveMariaRAT

Excel file xlsx 7331846b7486706bb089a60a9885b54b37c432bf8bfc0de738573f0d2ceb487b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/192376/

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