MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6df6d6a87c5379996b0b9594577167a3729e0eeea1f94c6e5ac1b78689d08292. 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: 4


Maldoc score: 6


Intelligence 4 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6df6d6a87c5379996b0b9594577167a3729e0eeea1f94c6e5ac1b78689d08292
SHA3-384 hash: b6ae1fa7fe0660eef57bf76735912b1fe2f06835869f63932125eeb407ab223d9db0a47a027562abd1e97f07a95d00ca
SHA1 hash: 866470b3a37603a53e6a9cb9b277784066aaf067
MD5 hash: 4440fc855ea5697248db2b90cdfd5fd2
humanhash: colorado-march-lamp-twenty
File name:Ref 0047.xls
Download: download sample
Signature AgentTesla
Create hunting rule
File size:161'280 bytes
First seen:2020-11-26 06:48:33 UTC
Last seen:2020-11-26 08:42:52 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:7k3hOdsylKlgryzc4bNhZFGzE+cL2kn/8b83yVFNXD10nsH/QcRk8oR/x+f1:7k3hOdsylKlgryzc4bNhZF+E+W2kn/8r
TLSH 33F39C43A8995B92E50C83B47D034EA82F066E1CE69276EF1212BF8F3F756510D8D52E
Reporter abuse_ch
Tags:AgentTesla xls


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: [193.142.59.20]
Sending IP: 193.142.59.20
From: GMHR <gm.hr@bambinopasta.com>
Subject: RE: Confirmation transfer
Attachment: Ref 0047.xls

AgentTesla payload URL:
http://sparepartiran.com/js/2Q/Yvvtz1.exe

AgentTesla SMTP exfil server:
smtp.poongln.com:587

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: 6
Application name is unknown
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 10 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2228 bytesDocumentSummaryInformation
3176 bytesSummaryInformation
4153680 bytesWorkbook
5482 bytes_VBA_PROJECT_CUR/PROJECT
671 bytes_VBA_PROJECT_CUR/PROJECTwm
7739 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
87 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
9223 bytes_VBA_PROJECT_CUR/VBA/dir
10172 bytes_VBA_PROJECT_CUR/VBA/vxagoxggy
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
SuspiciousCreateMay execute file or a system command through WMI
SuspiciousCreateObjectMay create an OLE object
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
2
# of downloads :
155
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Gathering data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/547781
Signature
Bypasses PowerShell execution policy
Creates processes via WMI
Drops PE files to the user root directory
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: Suspicious Program Location Process Starts
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 323027 Sample: Ref 0047.xls Startdate: 26/11/2020 Architecture: WINDOWS Score: 100 32 Multi AV Scanner detection for domain / URL 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->36 38 8 other signatures 2->38 6 powershell.exe 14 20 2->6         started        11 powershell.exe 21 2->11         started        13 EXCEL.EXE 27 20 2->13         started        process3 dnsIp4 28 sparepartiran.com 162.223.88.131, 49740, 49742, 80 COLOUPUS United States 6->28 30 192.168.2.1 unknown unknown 6->30 26 C:\Users\Public\uefummek.exe, PE32 6->26 dropped 40 Drops PE files to the user root directory 6->40 42 Powershell drops PE file 6->42 15 uefummek.exe 2 6->15         started        18 conhost.exe 6->18         started        20 uefummek.exe 2 11->20         started        22 conhost.exe 11->22         started        24 splwow64.exe 13->24         started        file5 signatures6 process7 signatures8 44 Multi AV Scanner detection for dropped file 15->44
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6df6d6a87c5379996b0b9594577167a3729e0eeea1f94c6e5ac1b78689d08292/
Threat name:
Script-Macro.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2020-11-26 06:49:03 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nx3nnkd4kn4zs2ylswkfo4lhunzj4dxouh4uy3s2yg3yncoqqkja._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201126-afwltnx5b6/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Checks processor information in registry
Suspicious use of FindShellTrayWindow
Office loads VBA resources, possible macro or embedded object present
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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:PowerShell_in_Word_Doc
Create hunting rule
Author:Florian Roth
Description:Detects a powershell and bypass keyword in a Word document
Reference:Internal Research - ME
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

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

Malspam

AgentTesla

Excel file xls 6df6d6a87c5379996b0b9594577167a3729e0eeea1f94c6e5ac1b78689d08292

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/856044/
  
Delivery method
Distributed via e-mail attachment

Comments