MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ab5b6d2e827e01ec12a55f3d634d512c4d9efc2a3363870e3060935b50c345e. 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: 11


Maldoc score: 4


Intelligence 11 IOCs YARA 20 File information Comments

SHA256 hash: 6ab5b6d2e827e01ec12a55f3d634d512c4d9efc2a3363870e3060935b50c345e
SHA3-384 hash: 2f8c8f086a76c001a8548abcee7ca72be1777573c1f760d208585c1c30b3b1daf1ee155a9d9fd5aec9695e1950024bc3
SHA1 hash: b6aecee4e29989615304b460cb13d64ac60b5203
MD5 hash: 89ac8f73c5bbba3c8bd6a24a4673b27f
humanhash: mike-item-victor-artist
File name:Quotation.xls
Download: download sample
Signature AgentTesla
File size:649'728 bytes
First seen:2024-03-04 09:58:47 UTC
Last seen:2024-03-04 13:25:33 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:mSNG9TYpnI4TXfeZ0rQpozwjTqCfgvdUbBMamyASW2ue/0uR9d+:89odX2ORWWCfgv+bBMakV2ll
TLSH T195D413413A8ACE4BC096A1F52F931C16214DBD552F81D5EB34ACBF9F1F35DB08A6321A
TrID 40.2% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
23.1% (.XLS) Microsoft Excel sheet (32500/1/3)
17.4% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
13.5% (.DOC) Microsoft Word document (old ver.) (19000/1/2)
5.6% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter cocaman
Tags:AgentTesla QUOTATION xls


Avatar
cocaman
Malicious email (T1566.001)
From: "Karina Sarkenova <info@yakdhhoor.com>" (likely spoofed)
Received: "from yakdhhoor.com (yakdhhoor.com [5.206.224.181]) "
Date: "Mon, 04 Mar 2024 11:16:35 +0100"
Subject: "REQUEST FOR QUOTE"
Attachment: "Quotation.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: 4
OLE dump

MalwareBazaar was able to identify 21 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
494 bytesMBD0014E3F8/CompObj
562 bytesMBD0014E3F8/Ole
620909 bytesMBD0014E3F8/CONTENTS
794 bytesMBD0014E3F9/CompObj
862 bytesMBD0014E3F9/Ole
9142927 bytesMBD0014E3F9/CONTENTS
1099 bytesMBD0014E3FA/CompObj
11186864 bytesMBD0014E3FA/Package
121068 bytesMBD0014E3FB/Ole
13277100 bytesWorkbook
14529 bytes_VBA_PROJECT_CUR/PROJECT
15104 bytes_VBA_PROJECT_CUR/PROJECTwm
16977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
17977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
18977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
19985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
202644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
21553 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:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
7
# of downloads :
369
Origin country :
CH CH
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Changing an executable file
Using the Windows Management Instrumentation requests
Creating a window
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a file
DNS request
Connection attempt
Sending a custom TCP request
Launching a service
Connection attempt to an infection source by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://107.174.138.160/crr/iaminlovewithsomeoneshecuteandtrulyyoungunluckyshenotundersatnd_howmuchiloveherbutitsallgreatwithtrueloveriamgivingyou.doc
Embedded Ole
Behaviour
BlacklistAPI detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm embedequation exploit macros shellcode
Gathering data
Result
Verdict:
MALICIOUS
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
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
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 document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office equation editor drops PE 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)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1402424 Sample: Quotation.xls Startdate: 04/03/2024 Architecture: WINDOWS Score: 100 57 Multi AV Scanner detection for domain / URL 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 15 other signatures 2->63 7 EXCEL.EXE 58 53 2->7         started        10 mpTrle.exe 2 2->10         started        13 mpTrle.exe 2->13         started        process3 dnsIp4 49 107.174.138.160, 49160, 49161, 49162 AS-COLOCROSSINGUS United States 7->49 15 CNN.exe 2 7->15         started        18 WINWORD.EXE 345 37 7->18         started        21 AcroRd32.exe 27 7->21         started        65 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->65 67 Machine Learning detection for dropped file 10->67 69 Injects a PE file into a foreign processes 10->69 23 mpTrle.exe 12 2 10->23         started        26 mpTrle.exe 13->26         started        signatures5 process6 dnsIp7 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->83 85 Machine Learning detection for dropped file 15->85 87 Contains functionality to inject code into remote processes 15->87 89 Injects a PE file into a foreign processes 15->89 28 CNN.exe 13 4 15->28         started        37 iaminlovewithsomeo...amgivingyou.doc.url, MS 18->37 dropped 39 C:\Users\user\...\crr on 107.174.138.160.url, MS 18->39 dropped 41 ~WRF{64ED5058-7B67...D-BF14167823C7}.tmp, Composite 18->41 dropped 91 Microsoft Office launches external ms-search protocol handler (WebDAV) 18->91 93 Office viewer loads remote template 18->93 95 Microsoft Office drops suspicious files 18->95 33 EQNEDT32.EXE 12 18->33         started        35 RdrCEF.exe 21->35         started        51 api.ipify.org 172.67.74.152, 443, 49168 CLOUDFLARENETUS United States 23->51 97 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->97 99 Tries to steal Mail credentials (via file / registry access) 26->99 101 Tries to harvest and steal browser information (history, passwords, etc) 26->101 file8 signatures9 process10 dnsIp11 53 104.26.12.205, 443, 49167, 49169 CLOUDFLARENETUS United States 28->53 55 api.ipify.org 28->55 43 C:\Users\user\AppData\Roaming\...\mpTrle.exe, PE32 28->43 dropped 71 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 28->71 73 Installs new ROOT certificates 28->73 75 Tries to steal Mail credentials (via file / registry access) 28->75 77 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->77 45 C:\Users\user\AppData\Roaming\CNN.exe, PE32 33->45 dropped 47 C:\Users\user\AppData\Local\...\CNN[1].exe, PE32 33->47 dropped 79 Office equation editor establishes network connection 33->79 81 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 33->81 file12 signatures13
Threat name:
Document-Excel.Exploit.CVE-2017-0199
Status:
Malicious
First seen:
2024-03-04 08:20:53 UTC
File Type:
Document
Extracted files:
57
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
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
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
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Abuses OpenXML format to download file from external location
Executes dropped EXE
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
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:Borland
Author:malware-lu
Rule name:Check_OutputDebugStringA_iat
Rule name:cobalt_strike_tmp01925d3f
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:informational_win_ole_protected
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_getEIP_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_OLE_file_magic_number
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_shellcode_hash
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Author:Willi Ballenthin
Rule name:office_document_vba
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:SEH__vba
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:vmdetect
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 xls 6ab5b6d2e827e01ec12a55f3d634d512c4d9efc2a3363870e3060935b50c345e

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments