MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5355a12b558956c322aef1f158747f83b510b348ddf991a21d18593bdbe920fb. 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 5 File information Comments

SHA256 hash: 5355a12b558956c322aef1f158747f83b510b348ddf991a21d18593bdbe920fb
SHA3-384 hash: 01416dca2cc7dcd16ea56d6e579606ab94da0c9df58acff8a51933120a9bacf59944a367a3733e929ef8e1f97a1bd4ee
SHA1 hash: 279bceebf176e003e93585dd13bd9435bcc1abe9
MD5 hash: bf5c6d3d640306027eafec85cc088f27
humanhash: sierra-helium-floor-missouri
File name:TransferScanCopy987w90.xlsx
Download: download sample
Signature AgentTesla
File size:2'659'377 bytes
First seen:2020-12-15 16:09:16 UTC
Last seen:2020-12-15 17:51:24 UTC
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 49152:86zUPn0hhmPSujgVi1e7VOOTLaNtWOs9KLR1ebdD5yftxHcAZ3/PkbN/N+nu6:fzUPn0j757VOSmNMOs9CeQR1Xkbenu6
TLSH 23C5337CE958FD14F96A72BC8286683C9F88DF376A787510642C343912BCEED606714E
Reporter Anonymous
Tags:AgentTesla CVE-2017-11882 xlsx

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 dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
A120 bytesOle
A22365644 bytesoLE10NatIVe

Intelligence


File Origin
# of uploads :
2
# of downloads :
174
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
TransferScanCopy987w90.xlsx
Verdict:
Malicious activity
Analysis date:
2020-12-15 16:11:33 UTC
Tags:
exploit CVE-2017-11882

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Document image
Document image
Result
Verdict:
MALICIOUS
Details
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Antivirus detection for URL or domain
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
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 harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 330789 Sample: TransferScanCopy987w90.xlsx Startdate: 15/12/2020 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Antivirus detection for URL or domain 2->40 42 Multi AV Scanner detection for dropped file 2->42 44 16 other signatures 2->44 7 EQNEDT32.EXE 12 2->7         started        12 EXCEL.EXE 37 12 2->12         started        process3 dnsIp4 28 192.227.129.4, 49165, 80 AS-COLOCROSSINGUS United States 7->28 22 C:\Users\user\AppData\Local\...\ama[1].exe, PE32 7->22 dropped 24 C:\Users\Public\vbc.exe, PE32 7->24 dropped 46 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->46 14 vbc.exe 7->14         started        26 C:\Users\...\~$TransferScanCopy987w90.xlsx, data 12->26 dropped file5 signatures6 process7 signatures8 48 Multi AV Scanner detection for dropped file 14->48 50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->50 52 Machine Learning detection for dropped file 14->52 54 2 other signatures 14->54 17 vbc.exe 2 14->17         started        20 vbc.exe 14->20         started        process9 signatures10 30 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->30 32 Tries to steal Mail credentials (via file access) 17->32 34 Tries to harvest and steal ftp login credentials 17->34 36 Tries to harvest and steal browser information (history, passwords, etc) 17->36
Threat name:
Document-Office.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2020-12-15 16:10:07 UTC
AV detection:
19 of 48 (39.58%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Behaviour
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious use of SetThreadContext
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Executes dropped EXE
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:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information


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

Comments