MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef. 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


AgentTesla


Vendor detections: 12


Intelligence 12 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef
SHA3-384 hash: 2382825238d78a2f8426422496a1802ee49f8be3ff77c20d474ec6adaf7adfad9528b7e7203f75e0829324b70f784e42
SHA1 hash: 9beddad96a8a516f94425e66cfae3d94b6f83443
MD5 hash: 41a8bf7bf79230d8cc4166bba4533596
humanhash: hawaii-finch-diet-mars
File name:Facturas 000005111, 005112,, 005113, 005114 0005115.xla
Download: download sample
Signature AgentTesla
Create hunting rule
File size:367'616 bytes
First seen:2024-02-08 07:11:25 UTC
Last seen:2024-02-08 08:32:46 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 6144:RThun7ZP8VNpX6NCLXxOWR0s2PxMIcn55PLhdPCOtB4srdhrW1ErtrdfcT21jLue:RTkx8VnX6NCLhOG0pxBcjPLTC+1rdhew
TLSH T1107423287AD5D14BC0975C3E8DE192E7110BFC266E83A8173590FB2F1478BC2D653AA7
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)
Reporter abuse_ch
Tags:AgentTesla cve-2017-0199 xla xlsx

Intelligence

File Origin
# of uploads :
2
# of downloads :
516
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ForwardedMessage.eml
Verdict:
Malicious activity
Analysis date:
2024-02-07 16:56:36 UTC
Tags:
phishing phishing-xls exploit cve-2017-11882 stegocampaign
Link:
https://app.any.run/tasks/4c26daaa-f001-4431-9ef9-3c8a4ecd064b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/475300/
Detection(s):
SecuriteInfo.com.Trojan.GenericFCA.Agent.107859.13261.17004.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.IMG.Phish.20422.21836.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.OleWishDottedQuadPolicykill.20220908.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef/results/dashboard
Payload URLs
URL
File name
http://172.245.214.91/wedfreshairgetfrommicrosfotballontechnologywithnewadvanceprocesstocompletenewthingsfrompc.doC
Embedded Ole
Behaviour
SuspiciousRTF detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit macros masquerade sload
Link:
https://www.filescan.io/uploads/65c47ecbb4bd387cafd234e3/reports/3d3f706d-1b2a-4bca-83b5-02b3fbc71cbc/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef
Label:
Benign
Suspicious Score:
3.9/10
Score Malicious:
39%
Score Benign:
61%
Link:
https://www.malware.ai/gui/files/?id=0c9576a7-4459-4f24-8d51-40a1d5025c77
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef
Details
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1388844
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Check if machine is in data center or colocation facility
Connects to a pastebin service (likely for C&C)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Office viewer loads remote template
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Shellcode detected
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell download and load assembly
Sigma detected: Powershell download payload from hardcoded c2 list
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
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)
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1388844 Sample: Facturas 000005111, 005112,... Startdate: 08/02/2024 Architecture: WINDOWS Score: 100 62 Snort IDS alert for network traffic 2->62 64 Multi AV Scanner detection for domain / URL 2->64 66 Found malware configuration 2->66 68 24 other signatures 2->68 9 EXCEL.EXE 8 50 2->9         started        process3 dnsIp4 54 172.245.214.91, 49160, 49161, 49162 AS-COLOCROSSINGUS United States 9->54 50 wedfreshairgetfrom...thingsfrompc[1].doc, ISO-8859 9->50 dropped 13 wscript.exe 1 9->13         started        17 WINWORD.EXE 345 37 9->17         started        20 AcroRd32.exe 27 9->20         started        file5 process6 dnsIp7 56 paste.ee 13->56 58 paste.ee 172.67.187.200, 443, 49168, 49169 CLOUDFLARENETUS United States 13->58 86 System process connects to network (likely due to code injection or exploit) 13->86 88 Suspicious powershell command line found 13->88 90 Wscript starts Powershell (via cmd or directly) 13->90 100 5 other signatures 13->100 22 powershell.exe 4 13->22         started        38 wedfreshairgetfrom...hingsfrompc.doC.url, MS 17->38 dropped 40 C:\Users\user\AppData\...\172.245.214.91.url, MS 17->40 dropped 42 ~WRF{64287CEF-A8B2...8-DD1D573BC617}.tmp, Composite 17->42 dropped 44 C:\Users\user\AppData\Local\...99EEFA8.doc, ISO-8859 17->44 dropped 92 Microsoft Office launches external ms-search protocol handler (WebDAV) 17->92 94 Office viewer loads remote template 17->94 96 Microsoft Office drops suspicious files 17->96 25 EQNEDT32.EXE 12 17->25         started        28 RdrCEF.exe 20->28         started        file8 98 Connects to a pastebin service (likely for C&C) 56->98 signatures9 process10 file11 78 Suspicious powershell command line found 22->78 80 Suspicious execution chain found 22->80 30 powershell.exe 12 5 22->30         started        46 C:\Users\user\AppData\...\wednewsmangero.vbs, Unicode 25->46 dropped 48 C:\Users\user\...\wednewsmangero[1].vbs, Unicode 25->48 dropped 82 Office equation editor establishes network connection 25->82 84 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 25->84 signatures12 process13 dnsIp14 60 uploaddeimagens.com.br 104.21.45.138, 443, 49171 CLOUDFLARENETUS United States 30->60 102 Writes to foreign memory regions 30->102 104 Injects a PE file into a foreign processes 30->104 34 RegAsm.exe 12 2 30->34         started        signatures15 process16 dnsIp17 52 ip-api.com 208.95.112.1, 49173, 80 TUT-ASUS United States 34->52 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 34->70 72 Tries to steal Mail credentials (via file / registry access) 34->72 74 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 34->74 76 2 other signatures 34->76 signatures18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef/
Threat name:
Document-Office.Exploit.CVE-2017-0199
Create hunting rule
Status:
Malicious
First seen:
2024-02-07 15:26:15 UTC
File Type:
Document
Extracted files:
78
AV detection:
7 of 36 (19.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3jwfxisvim7dzyn7ryjikyteasozijg7fnka3m37rbue7zmk2txq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/240208-h1hncadcg7/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Script User-Agent
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in System32 directory
Abuses OpenXML format to download file from external location
Blocklisted process makes network request
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/da6c5ba25543/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef

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:Borland
Create hunting rule
Author:malware-lu
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
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/
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:SEH__vba
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Malspam

AgentTesla

Excel file xlsx da6c5ba255433e3ce1bf8e12856264049d9424df2b540db37f88684fe58ad4ef

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/475300/

Comments