MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91e300979dbed56033d3f9f821abbf631c71858cf9747fa65011c2fe1c515a28. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments

SHA256 hash: 91e300979dbed56033d3f9f821abbf631c71858cf9747fa65011c2fe1c515a28
SHA3-384 hash: 634477b7c8bf443281f4fdf80158b1546d72f517cfc472ed38c236b0ab5f26f85e83f1a236017700d4888fd188e7cd47
SHA1 hash: f27187cfbd9c3ad22c6ff8cc16f106a26437f5a8
MD5 hash: 8b96bcae9b00af1649c5433e19b66f52
humanhash: kitten-quiet-december-fanta
File name:citat-05022024.xla
Download: download sample
Signature AgentTesla
File size:245'248 bytes
First seen:2024-05-03 09:27:15 UTC
Last seen:2024-05-03 18:12:57 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 6144:id4UcLe0JOqPQZR8MDdATCR3tSv0W8DNy/tgG794Yhk:lUP/qPQZR8MxAm/S8W8B/G794Gk
TLSH T1063402367A74E087D15195F838CD84D3AB3ABC92AF01B48F32A473AD5676158CCA16CF
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 xla xlsx

Intelligence


File Origin
# of uploads :
4
# of downloads :
411
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
citat-05022024.xla
Verdict:
No threats detected
Analysis date:
2024-05-02 09:50:40 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a file
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% directory
Launching a service
Sending a UDP request
Creating a process with a hidden window
Connection attempt by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://pop.tg/89zB6
Embedded Ole
Behaviour
BlacklistAPI detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit language-tr macros masquerade shellcode
Gathering data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
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)
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
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 drops RTF 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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Shellcode detected
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
Yara detected Powershell download and execute
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1435897 Sample: citat-05022024.xla.xlsx Startdate: 03/05/2024 Architecture: WINDOWS Score: 100 69 pop.tg 2->69 105 Snort IDS alert for network traffic 2->105 107 Multi AV Scanner detection for domain / URL 2->107 109 Found malware configuration 2->109 111 24 other signatures 2->111 10 EXCEL.EXE 7 23 2->10         started        14 chrome.exe 4 2->14         started        16 chrome.exe 2->16         started        18 12 other processes 2->18 signatures3 process4 dnsIp5 85 pop.tg 172.67.206.230, 49161, 49163, 80 CLOUDFLARENETUS United States 10->85 87 192.3.101.142, 49162, 49166, 49187 AS-COLOCROSSINGUS United States 10->87 65 wewanthowthemagica...lingmefortea[1].doc, Rich 10->65 dropped 20 wscript.exe 11 10->20         started        24 WINWORD.EXE 336 37 10->24         started        89 192.168.2.5 unknown unknown 14->89 91 192.168.2.6 unknown unknown 14->91 93 239.255.255.250 unknown Reserved 14->93 27 chrome.exe 14->27         started        29 chrome.exe 16->29         started        31 chrome.exe 18->31         started        33 chrome.exe 18->33         started        35 chrome.exe 18->35         started        37 9 other processes 18->37 file6 process7 dnsIp8 71 paste.ee 20->71 73 paste.ee 104.21.84.67, 443, 49167 CLOUDFLARENETUS United States 20->73 113 System process connects to network (likely due to code injection or exploit) 20->113 115 Suspicious powershell command line found 20->115 117 Wscript starts Powershell (via cmd or directly) 20->117 127 5 other signatures 20->127 39 powershell.exe 4 20->39         started        75 pop.tg 24->75 77 104.21.15.201, 49164, 49165, 80 CLOUDFLARENETUS United States 24->77 53 C:\Users\user\AppData\Roaming\...\pop.tg.url, MS 24->53 dropped 55 C:\Users\user\AppData\Roaming\...\89zB6.url, MS 24->55 dropped 57 ~WRF{A3A6F7D3-36FA...F-8DDEBBFF17EB}.tmp, Composite 24->57 dropped 59 C:\Users\user\AppData\Local\...\624E5EEE.doc, Rich 24->59 dropped 119 Microsoft Office launches external ms-search protocol handler (WebDAV) 24->119 121 Office viewer loads remote template 24->121 123 Microsoft Office drops suspicious files 24->123 42 EQNEDT32.EXE 12 24->42         started        79 www.google.com 142.250.190.132, 443, 49169, 49173 GOOGLEUS United States 27->79 81 127.0.0.1 unknown unknown 27->81 83 google.com 27->83 file9 125 Connects to a pastebin service (likely for C&C) 71->125 signatures10 process11 file12 129 Suspicious powershell command line found 39->129 45 powershell.exe 12 5 39->45         started        61 C:\Users\user\...\imagesfishingboat.vbs, Unicode 42->61 dropped 63 C:\Users\user\...\hotstuffnewrdp[1].vbs, Unicode 42->63 dropped 131 Office equation editor establishes network connection 42->131 133 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 42->133 signatures13 process14 dnsIp15 95 uploaddeimagens.com.br 104.21.45.138, 443, 49168, 49180 CLOUDFLARENETUS United States 45->95 135 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 45->135 137 Writes to foreign memory regions 45->137 139 Injects a PE file into a foreign processes 45->139 49 AddInProcess32.exe 45->49         started        signatures16 process17 dnsIp18 67 ip-api.com 208.95.112.1, 49194, 80 TUT-ASUS United States 49->67 97 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 49->97 99 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 49->99 101 Tries to steal Mail credentials (via file / registry access) 49->101 103 2 other signatures 49->103 signatures19
Threat name:
Document-Word.Exploit.CVE-2017-0199
Status:
Malicious
First seen:
2024-05-02 01:05:58 UTC
File Type:
Document
Extracted files:
40
AV detection:
8 of 38 (21.05%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
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
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
Suspicious use of SetThreadContext
Enumerates connected drives
Looks up external IP address via web service
Abuses OpenXML format to download file from external location
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.

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.
Rule name:maldoc_OLE_file_magic_number
Author:Didier Stevens (https://DidierStevens.com)
Rule name:office_document_vba
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.

Comments