MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5145299a7e9cafe3a9bd0a61ac828370dd4810edd14d37f74d7f06efa58fde35. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5145299a7e9cafe3a9bd0a61ac828370dd4810edd14d37f74d7f06efa58fde35
SHA3-384 hash: 66ae30e928a123953a478d50decf2cc20b8f659429f4c5729399a1c8548110f2a15ab184d31089435554004273d08f17
SHA1 hash: b5709bdf5f9256a1decb59856431ce03ecc9a786
MD5 hash: bfa073104e78d07bc7ea4cc3e7628d66
humanhash: arkansas-ohio-don-bravo
File name:Purchase order - OUR PO NO. 26107 - 26118.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:451'072 bytes
First seen:2020-08-05 08:47:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:yImTCwWe2R1y8zPEh53GcGX7cvD0efGlCxyFuhM/tQf:yFewTA1y8zI521YvDDelCxyFu8
Threatray 10'788 similar samples on MalwareBazaar
TLSH 21A4E00D7A90951DF1BA0E3F5C3101838E26F98FDD36DA8B6AB61469447E18CBCB1F61
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: iffco.com
Sending IP: 209.58.149.99
From: Alissonn Felippe Bebber <knkhan@iffco.com>
Subject: RFQ -NEW ORDER - PO# 10702057921 MRR- 104917 INV.NO# 7928
Attachment: Purchase order - OUR PO NO. 26107 - 26118.pdf.001 (contains "Purchase order - OUR PO NO. 26107 - 26118.pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
63
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39258/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410670
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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: Suspicious Double Extension
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257605 Sample: Purchase order  - OUR PO  N... Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Yara detected AgentTesla 2->41 43 Yara detected AntiVM_3 2->43 45 8 other signatures 2->45 6 YYtJku.exe 1 2->6         started        9 Purchase order  - OUR PO  NO. 26107 - 26118.pdf.exe 1 2->9         started        12 YYtJku.exe 2->12         started        process3 file4 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->47 49 Machine Learning detection for dropped file 6->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->51 14 YYtJku.exe 2 6->14         started        29 Purchase order  - ...- 26118.pdf.exe.log, ASCII 9->29 dropped 53 Injects a PE file into a foreign processes 9->53 18 Purchase order  - OUR PO  NO. 26107 - 26118.pdf.exe 2 5 9->18         started        21 YYtJku.exe 2 12->21         started        23 YYtJku.exe 12->23         started        signatures5 process6 dnsIp7 31 192.168.2.1 unknown unknown 14->31 33 smtp.yandex.com 14->33 55 Tries to harvest and steal ftp login credentials 14->55 57 Tries to harvest and steal browser information (history, passwords, etc) 14->57 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->59 35 smtp.yandex.ru 77.88.21.158, 49752, 49754, 587 YANDEXRU Russian Federation 18->35 37 smtp.yandex.com 18->37 25 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 18->25 dropped 27 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 18->27 dropped 61 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->61 63 Moves itself to temp directory 18->63 65 Tries to steal Mail credentials (via file access) 18->65 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5145299a7e9cafe3a9bd0a61ac828370dd4810edd14d37f74d7f06efa58fde35/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 07:19:00 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kfcstgt6tsx6hkn5bjq2zaudodouqehn2fgtp52np4do7jmp3y2q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'778 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200805-fkg789pv6a/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: RenamesItself
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5145299a7e9cafe3a9bd0a61ac828370dd4810edd14d37f74d7f06efa58fde35

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: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

rar 7496b647484b4559a75f16fa11ae0b55c76de7bb20620125e33d957140ed0252

AgentTesla

Executable exe 5145299a7e9cafe3a9bd0a61ac828370dd4810edd14d37f74d7f06efa58fde35

(this sample)

  
Dropped by
MD5 8585d8366763624ca2c229c0407103ea
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39258/
  
Dropped by
SHA256 7496b647484b4559a75f16fa11ae0b55c76de7bb20620125e33d957140ed0252

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