MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7acfca8e75bee82b74bcdc2ae81350d84ea44b36d5e8689e0434157e0797ecef. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments

SHA256 hash: 7acfca8e75bee82b74bcdc2ae81350d84ea44b36d5e8689e0434157e0797ecef
SHA3-384 hash: ccbebc42ff21ee6cc5ea01d239be7fc4e21867fc3dfa712f77d9ac71b59b61f7b74bbe7201f4f763360bd57f13f9580f
SHA1 hash: 904a59059171c669dcc4f7abc76fdd1d62e0fe82
MD5 hash: ac3a9a9078cbe9cc735f254c49b66727
humanhash: wolfram-fourteen-helium-six
File name:Purchase Order 1508521.xlsx
Download: download sample
Signature AgentTesla
File size:359'424 bytes
First seen:2020-12-02 09:32:53 UTC
Last seen:2020-12-02 11:40:25 UTC
File type:Excel file xlsx
MIME type:application/encrypted
ssdeep 6144:GLKWjYYJNyzgZoD2NcotsxImtpwtWhcOqsx/YJMXWqeYH6/i7JnR7SZ8GslejqR:GrYUAKNnt7mtpKW7qY2MGqez/i79RjqO
TLSH E474228C7504D312FA23A6391A8164258CA2FF8C17654E13A21F73BADF317678291EFD
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 VelvetSweatshop xlsx


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: mail.ozokgroup.com
Sending IP: 185.111.235.60
From: Damon <damon@dyna-m.sg>
Subject: Purchase Order 1508521 from Dyna-M Industrial Pte Ltd
Attachment: Purchase Order 1508521.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 id
Application name is unknown
Office document is in OLE format
Office document is in encrypted
OLE dump
Detection: VelvetSweatshop

MalwareBazaar was able to identify 6 sections in this file using oledump:

Section IDSection sizeSection name
164 bytesDataSpaces/DataSpaceInfo/StrongEncryptionDataSpace
2112 bytesDataSpaces/DataSpaceMap
3200 bytesDataSpaces/TransformInfo/StrongEncryptionTransform/Primary
476 bytesDataSpaces/Version
5352552 bytesEncryptedPackage
6224 bytesEncryptionInfo

Intelligence


File Origin
# of uploads :
2
# of downloads :
169
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process by context flags manipulation
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects in Encrypted Excel File
Document image
Document image
Result
Gathering data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Binary contains a suspicious time stamp
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
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 325802 Sample: Purchase Order 1508521.xlsx Startdate: 02/12/2020 Architecture: WINDOWS Score: 100 31 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->31 33 Found malware configuration 2->33 35 Antivirus detection for URL or domain 2->35 37 14 other signatures 2->37 7 EQNEDT32.EXE 12 2->7         started        12 EXCEL.EXE 37 16 2->12         started        process3 dnsIp4 29 216.170.114.70, 49165, 80 AS-COLOCROSSINGUS United States 7->29 21 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 7->21 dropped 23 C:\Users\Public\vbc.exe, PE32 7->23 dropped 47 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->47 14 vbc.exe 2 5 7->14         started        file5 signatures6 process7 signatures8 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->49 51 Machine Learning detection for dropped file 14->51 53 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->53 55 Injects a PE file into a foreign processes 14->55 17 vbc.exe 2 14->17         started        process9 dnsIp10 25 smtp.andms-kr.com 17->25 27 us2.smtp.mailhostbox.com 208.91.199.224, 49166, 587 PUBLIC-DOMAIN-REGISTRYUS United States 17->27 39 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->39 41 Tries to steal Mail credentials (via file access) 17->41 43 Tries to harvest and steal ftp login credentials 17->43 45 Tries to harvest and steal browser information (history, passwords, etc) 17->45 signatures11
Threat name:
Document-Office.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2020-12-02 09:33:07 UTC
AV detection:
14 of 28 (50.00%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
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
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Blacklisted process makes network request
Executes dropped EXE
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: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.

Malspam

AgentTesla

Excel file xlsx 7acfca8e75bee82b74bcdc2ae81350d84ea44b36d5e8689e0434157e0797ecef

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments