MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da
SHA3-384 hash: 578c7933aac16bf4e19301e1404e33110d371f93593360c7299d658dbe968fe4b4964224ab6db0673bf1a2840cb706c6
SHA1 hash: 486cab73374fc98b369a1caf19bc2fc7c9285ad1
MD5 hash: 7236e60628c25d1b48ae9de6eb5e6b8c
humanhash: lamp-west-ack-emma
File name:BL & Original Shipping Documents AWB-62987268.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:749'056 bytes
First seen:2020-07-21 18:38:26 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:rHNhwewYtBVIeZSvgQ/v9tSKPq/OzuXUR8z2WlBHbJuGdtTGA1pYCw:ZhPtBSySotoLOdyWVNNrw
Threatray 10'616 similar samples on MalwareBazaar
TLSH C5F49D00FBF485CAD3AA1F7AD87101009575F95BABE6E78B2B84F2AD58533588743F12
Reporter abuse_ch
Tags:AgentTesla DHL exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: hwhk121-11.mailset.cn
Sending IP: 107.150.121.11
From: DHL EXPRESS<dhlexpress@dhl.com>
Subject: DHL EXPRESS AWB Shipment Arrival Waybill No. :AWB-62987268
Attachment: BL Original Shipping Documents AWB-62987268.zip (contains "BL & Original Shipping Documents AWB-62987268.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/30352/
Detection(s):
SecuriteInfo.com.MSIL.GenKryptik.EOQO.31473.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Moving of the original file
Enabling autorun with Startup directory
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/393669
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 249123 Sample: BL & Original Shipping Docu... Startdate: 22/07/2020 Architecture: WINDOWS Score: 100 67 Found malware configuration 2->67 69 Multi AV Scanner detection for dropped file 2->69 71 Sigma detected: Scheduled temp file as task from temp location 2->71 73 7 other signatures 2->73 8 BL & Original Shipping Documents AWB-62987268.exe 9 2->8         started        12 NLKaAn.exe 4 2->12         started        14 NLKaAn.exe 2->14         started        process3 file4 55 C:\Users\user\AppData\...\CdKZXCSedTjRc.exe, PE32 8->55 dropped 57 C:\Users\user\AppData\Local\...\tmpBCD3.tmp, XML 8->57 dropped 59 BL & Original Ship...WB-62987268.exe.log, ASCII 8->59 dropped 89 Injects a PE file into a foreign processes 8->89 16 BL & Original Shipping Documents AWB-62987268.exe 4 5 8->16         started        21 schtasks.exe 1 8->21         started        91 Multi AV Scanner detection for dropped file 12->91 93 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->93 95 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->95 23 NLKaAn.exe 2 12->23         started        25 NLKaAn.exe 12->25         started        27 NLKaAn.exe 14->27         started        signatures5 process6 dnsIp7 61 smtp.yandex.ru 77.88.21.158, 49717, 49720, 587 YANDEXRU Russian Federation 16->61 63 smtp.yandex.com 16->63 51 C:\Users\user\AppData\Roaming\...51LKaAn.exe, PE32 16->51 dropped 53 C:\Users\user\...53LKaAn.exe:Zone.Identifier, ASCII 16->53 dropped 75 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->75 77 Moves itself to temp directory 16->77 79 Tries to steal Mail credentials (via file access) 16->79 87 4 other signatures 16->87 29 reg.exe 16->29         started        31 reg.exe 16->31         started        33 reg.exe 16->33         started        35 WerFault.exe 16->35         started        37 conhost.exe 21->37         started        65 smtp.yandex.com 23->65 81 Uses cmd line tools excessively to alter registry or file data 23->81 83 Tries to harvest and steal ftp login credentials 23->83 85 Tries to harvest and steal browser information (history, passwords, etc) 23->85 39 reg.exe 23->39         started        41 WerFault.exe 23->41         started        file8 signatures9 process10 process11 43 conhost.exe 29->43         started        45 conhost.exe 31->45         started        47 conhost.exe 33->47         started        49 conhost.exe 39->49         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da/
Threat name:
ByteCode-MSIL.Trojan.MassLogger
Create hunting rule
Status:
Malicious
First seen:
2020-07-21 18:40:09 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rlcx5qgtfnctvir2dryutvonk2k4rkm2tpilpev7yfarweqwytna._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'606 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
persistence spyware keylogger trojan stealer family:agenttesla evasion
Link:
https://tria.ge/reports/200721-33d8n519da/
Behaviour
Suspicious use of SetWindowsHookEx
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Disables RegEdit via registry modification
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: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_g2
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann@fkie.fraunhofer.de>
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

zip c3fdc313fbe3c620f9f7ed163f47fb8f153cdd7fb3822b90f543627050ab4df2

AgentTesla

Executable exe 8ac57ec0d32b453aa23a1c7149d5cd5695c8a99a9bd0b792bfc1411b1216c4da

(this sample)

  
Dropped by
MD5 63fa7120b78e8168b19a55a5b01241ed
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/30352/
  
Dropped by
SHA256 c3fdc313fbe3c620f9f7ed163f47fb8f153cdd7fb3822b90f543627050ab4df2

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