MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d. 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


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d
SHA3-384 hash: 1bbefb7dead10db6a86c5cf2547074f124c313e3d0d1593d1d0dc894fd8743703b8a1d1ae362a3c39cea659d6ec4db40
SHA1 hash: 119a77c497b1aeb2ceeb4b3cdb3f349d7cf09891
MD5 hash: 0efad50582a96e6b921b731221f34964
humanhash: blue-leopard-stairway-undress
File name:PO_120610361.xlsx
Download: download sample
Signature AgentTesla
Create hunting rule
File size:16'776 bytes
First seen:2021-02-08 12:37:29 UTC
Last seen:2021-02-10 06:15:41 UTC
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 384:HqIogsd7apLMxO+MUCzIfuVERiwZt1Q5AeaAzA:Kf7csBwyUutK5AetA
TLSH 6872BF4F4C6544EDC72C81B0312D2D9DE61A34DB0E5AAA4AFAF0E5E78D3B28F5F51508
Reporter cocaman
Tags:AgentTesla xlsx


Avatar
cocaman
Malicious email (T1566.001)
From: ""Annabel Weiss - accounts dept HSBC"<anna.weiss@gmail.com>" (likely spoofed)
Received: "from martevirt.feelhosting.com (martevirt.feelhosting.com [144.76.149.151]) "
Date: "Tue, 9 Feb 2021 13:10:42 +0100"
Subject: "fwd: Payment Advice Note dt. 09.02.2021"
Attachment: "USD44,980.07 Payment advise REF.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 2 sections in this file using oledump:

Section IDSection sizeSection name
A19604 bytesole10nAtIVE

Intelligence

File Origin
# of uploads :
6
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO_120610361.xlsx
Verdict:
Malicious activity
Analysis date:
2021-02-08 12:39:12 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/ecf6b572-7e8f-4492-bca5-c9e6662625d7

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
Detection(s):
SecuriteInfo.com.Malware.XML.Autoload-1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file
Creating a process with a hidden window
Possible injection to a system process
Sending an HTTP GET request
Launching a file downloaded from the Internet
Running batch commands by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Link:
https://app.docguard.net/c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d/results/dashboard
Result
Verdict:
MALICIOUS
Details
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/601787
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for submitted 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: Microsoft Office Product Spawning Windows Shell
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 349912 Sample: PO_120610361.xlsx Startdate: 08/02/2021 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Sigma detected: Scheduled temp file as task from temp location 2->47 49 18 other signatures 2->49 8 EQNEDT32.EXE 11 2->8         started        13 EXCEL.EXE 57 12 2->13         started        process3 dnsIp4 41 91.235.129.3, 49165, 80 ITLDC-NLUA Ukraine 8->41 31 C:\Users\user\AppData\Local\...\sco[1].exe, PE32 8->31 dropped 33 C:\Users\Public\name.exe, PE32 8->33 dropped 67 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->67 15 cmd.exe 8->15         started        35 C:\Users\user\Desktop\~$PO_120610361.xlsx, data 13->35 dropped file5 signatures6 process7 process8 17 name.exe 3 15->17         started        file9 27 C:\Users\user\AppData\...\UbJswKScwNQ.exe, PE32 17->27 dropped 29 C:\Users\user\AppData\Local\...\tmpD03B.tmp, XML 17->29 dropped 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->51 53 Machine Learning detection for dropped file 17->53 55 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 17->55 57 Injects a PE file into a foreign processes 17->57 21 name.exe 2 17->21         started        25 schtasks.exe 17->25         started        signatures10 process11 dnsIp12 37 airseaalliance.com 198.136.51.123, 49166, 587 DIMENOCUS United States 21->37 39 mail.airseaalliance.com 21->39 59 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->59 61 Tries to steal Mail credentials (via file access) 21->61 63 Tries to harvest and steal ftp login credentials 21->63 65 2 other signatures 21->65 signatures13
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d/
Threat name:
Win32.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-08 11:19:09 UTC
File Type:
Document
Extracted files:
13
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yj7opellory3yo7trjgosk5ta5mxf3cgqfhtzigxdw7cjxcjlz6q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
ransomware
Link:
https://tria.ge/reports/210208-d1hnpmb936/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
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 FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Exploit
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d

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
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: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

File information

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

Malspam

AgentTesla

Excel file xlsx c27ee7916b7471bc3bf38a4ce92bb3075972ec46814f3ca0d71dbe24dc495e7d

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropping
AgentTesla

Comments