MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28a9ceab6ce4f00161170c5b1eda918bf572357b4e27644f07b897e8866a0b4a. 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: 28a9ceab6ce4f00161170c5b1eda918bf572357b4e27644f07b897e8866a0b4a
SHA3-384 hash: 40348c5287a08103c8e7bff70b2087e8c42de18db31d3b07b6d04ff0e7aebe483ff10decec8fc501569336b6d8adc512
SHA1 hash: 0b37efd39b43820644b3f7f29f357c9390d99d01
MD5 hash: 47717aee9349ea9b2c22454353cc06d9
humanhash: nitrogen-zulu-minnesota-july
File name:shipping documents.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:910'848 bytes
First seen:2020-08-04 13:30:37 UTC
Last seen:2020-08-04 15:22:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:wEHHcPgYxmOE+9oYClvpSCqKamFsqFenLg4+MJ7n2Do4pPeRH89fuDVa:BcIYxPVjCqvyknLgHMJD2VZlsVa
Threatray 10'689 similar samples on MalwareBazaar
TLSH 7315BFC1F1809D50D86A4E3B8D3359914B33AC6BEF42C607349CB6596BF72966A34F83
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

From: Monica moor <Monica.moor@vishalshipping.com>
Reply-To: Monica.moor@vishalshipping.com
Subject: Shipping Documents
Attachment: shipping documents.rar (contains "shipping documents.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
80
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/38727/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.12003.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/409492
Signature
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
Machine Learning detection for sample
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: Capture Wi-Fi password
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 harvest and steal WLAN passwords
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257029 Sample: shipping documents.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Sigma detected: Capture Wi-Fi password 2->46 48 Yara detected AgentTesla 2->48 50 5 other signatures 2->50 8 shipping documents.exe 1 2->8         started        11 LKUgjc.exe 2 2->11         started        13 LKUgjc.exe 1 2->13         started        process3 file4 30 C:\Users\user\...\shipping documents.exe.log, ASCII 8->30 dropped 15 RegSvcs.exe 2 4 8->15         started        20 conhost.exe 11->20         started        22 conhost.exe 13->22         started        process5 dnsIp6 32 smtp.yandex.ru 77.88.21.158, 49750, 587 YANDEXRU Russian Federation 15->32 34 smtp.yandex.com 15->34 28 C:\Users\user\AppData\Roaming\...\LKUgjc.exe, PE32 15->28 dropped 36 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->36 38 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->38 40 Tries to steal Mail credentials (via file access) 15->40 42 5 other signatures 15->42 24 netsh.exe 3 15->24         started        file7 signatures8 process9 process10 26 conhost.exe 24->26         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/28a9ceab6ce4f00161170c5b1eda918bf572357b4e27644f07b897e8866a0b4a/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 13:32:10 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fcu45k3m4tyacyixbrnr5wurrp2xenl3jytwityhxcl6rbtkbnfa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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fb42ce632ff111ef24eebae3f336e0e04b8602dd621e2886a22ce0870ce287c4
AgentTesla
+ 10'679 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware persistence trojan family:agenttesla
Link:
https://tria.ge/reports/200804-3r755c9dz6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Modifies service
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
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/28a9ceab6ce4f00161170c5b1eda918bf572357b4e27644f07b897e8866a0b4a

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 289ebd22d7506f6d3fe8f263509456f5d4056d6df43e76dbfe0ed78cf0da0a1c

AgentTesla

Executable exe 28a9ceab6ce4f00161170c5b1eda918bf572357b4e27644f07b897e8866a0b4a

(this sample)

  
Dropped by
MD5 dc3298bc40cbacfbfa39f1e9917be833
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38727/
  
Dropped by
SHA256 289ebd22d7506f6d3fe8f263509456f5d4056d6df43e76dbfe0ed78cf0da0a1c

Comments