MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ae58dbbdf285bf8bc6df4534b058bb0bdf857d3034c1a825dc38893464f28cdf. 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: 7


Intelligence 7 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ae58dbbdf285bf8bc6df4534b058bb0bdf857d3034c1a825dc38893464f28cdf
SHA3-384 hash: 74b1b35161313544caa98d1a34dce34c65560def984ba35e864de094f28b5b7815a96b9876b5869d4d59e4ff170e110e
SHA1 hash: 5bb4433cf622db77027b6049453f57e7293ec338
MD5 hash: aba4696a57d74d3ff26665ad19e6c07b
humanhash: stairway-december-kansas-nineteen
File name:Product list.xlsm
Download: download sample
Signature AgentTesla
Create hunting rule
File size:120'379 bytes
First seen:2020-08-04 09:34:23 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 3072:meYVepuW3riUK34o/6AIFjRSa7XFlS+6cg2TgXeSU1y:nqA9rizojjVlUcBuP
TLSH 93C3126D3B80B801CE5E6AF1D37ED5DD6431A701E425E40B62E9B03854C2F6C1EA796E
Reporter abuse_ch
Tags:AgentTesla xlsm


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: static.33.46.181.135.clients.your-server.de
Sending IP: 135.181.46.33
From: Penelope Alvarez <info@itrad3r.com>
Subject: Re: Request from Medigas SRL
Attachment: Product list.xlsm

AgentTesla payload URL:
http://sdak1.tk/temp/oghcvbn.exe

AgentTesla SMTP exfil server:
mail.mologadievents.co.za:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
73
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Doc.Dropper.Agent-9208837-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a file
Creating a file in the %temp% directory
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a window
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a process from a recently created file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/408995
Signature
.NET source code contains very large array initializations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Office process drops PE file
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: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256734 Sample: Product list.xlsm Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Document exploit detected (drops PE files) 2->46 48 Yara detected AgentTesla 2->48 50 7 other signatures 2->50 7 EXCEL.EXE 29 37 2->7         started        12 MMYMMY.exe 2 2->12         started        14 MMYMMY.exe 1 2->14         started        process3 dnsIp4 38 sdak1.tk 13.245.17.136, 49734, 80 AMAZON-02US United States 7->38 32 C:\Users\user\AppData\...\oghcvbn[1].exe, PE32 7->32 dropped 34 C:\Users\Public\dkiotftra.exe, PE32 7->34 dropped 52 Document exploit detected (creates forbidden files) 7->52 54 Document exploit detected (process start blacklist hit) 7->54 16 dkiotftra.exe 4 7->16         started        19 conhost.exe 12->19         started        21 conhost.exe 14->21         started        file5 signatures6 process7 file8 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 16->30 dropped 23 AddInProcess32.exe 3 16->23         started        28 AddInProcess32.exe 2 4 16->28         started        process9 dnsIp10 40 mail.mologadievents.co.za 154.0.168.64, 49753, 587 AfrihostZA South Africa 23->40 42 192.168.2.1 unknown unknown 23->42 36 C:\Users\user\AppData\Roaming\...\MMYMMY.exe, PE32 23->36 dropped 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->56 58 Tries to steal Mail credentials (via file access) 23->58 60 Tries to harvest and steal ftp login credentials 23->60 68 2 other signatures 23->68 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 28->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 28->64 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->66 file11 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ae58dbbdf285bf8bc6df4534b058bb0bdf857d3034c1a825dc38893464f28cdf/
Threat name:
Document-Office.Downloader.SLoad
Create hunting rule
Status:
Suspicious
First seen:
2020-08-04 09:36:06 UTC
AV detection:
13 of 48 (27.08%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vzmnxppsqw7yxrw7iu2lawf3bppyk7jqgta2qjo4hcetizhsrtpq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200804-x5kp825n76/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Loads dropped DLL
Reads user/profile data of local email clients
Executes dropped EXE
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Dropper
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/ae58dbbdf285bf8bc6df4534b058bb0bdf857d3034c1a825dc38893464f28cdf

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

AgentTesla

Excel file xlsm ae58dbbdf285bf8bc6df4534b058bb0bdf857d3034c1a825dc38893464f28cdf

(this sample)

AgentTesla

Executable exe e90c07313d393becfb64e2c5b80b0440f2689fc7bd77b7dadf761dd3aa128f98

  
URLhaus
https://urlhaus.abuse.ch/url/424293/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 e90c07313d393becfb64e2c5b80b0440f2689fc7bd77b7dadf761dd3aa128f98
  
Dropping
MD5 5ce51d3c04ee98cbe3f33d34e6b148a9

Comments