MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 def4b160ee042e7bcbd75cb191c3d366e4df9290ac7e2c41fe9305cdfc1ab1d2. 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: def4b160ee042e7bcbd75cb191c3d366e4df9290ac7e2c41fe9305cdfc1ab1d2
SHA3-384 hash: df489e878021a0fc7d246b219fa3f931e20e85bb60957f7166a52c4b2d09d0c5fe4fada92e461b67c7ea064957a9c072
SHA1 hash: 3fc8f389c9349545b9d59c97b4a6f0e7e73f9087
MD5 hash: b3ade78534ec1de16fe5feb2e3ff61d7
humanhash: fillet-black-massachusetts-cardinal
File name:Catalog.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:501'760 bytes
First seen:2020-07-31 07:11:10 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 12288:5IfuQJsvJ1o/Z2kq7099YcqoDFAHQ942nY74cLAO:5IfuQJsvbh570HrqoSHQ9P+SO
Threatray 10'668 similar samples on MalwareBazaar
TLSH BCB4DF54F0DAE11BE43172B19FCDC2A8CEEDB4E891B3532B324967A790E4B4786C4476
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: hwsrv-749673.hostwindsdns.com
Sending IP: 192.236.193.181
From: Dennis Olson <Dennis@wamtruck.com>
Subject: NEW ORDER
Attachment: Catalog.pdf.rar (contains "Catalog.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/35918/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/404705
Signature
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for dropped file
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: Scheduled temp file as task from temp location
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 dnsIp2 2 Behavior Graph ID: 254589 Sample: Catalog.exe Startdate: 31/07/2020 Architecture: WINDOWS Score: 100 30 g.msn.com 2->30 34 Found malware configuration 2->34 36 Sigma detected: Scheduled temp file as task from temp location 2->36 38 Yara detected AgentTesla 2->38 40 5 other signatures 2->40 8 Catalog.exe 7 2->8         started        signatures3 process4 file5 22 C:\Users\user\AppData\...\&startupname&.exe, PE32 8->22 dropped 24 C:\Users\user\AppData\Local\...\tmp4046.tmp, XML 8->24 dropped 26 C:\...\&startupname&.exe:Zone.Identifier, ASCII 8->26 dropped 28 C:\Users\user\AppData\...\Catalog.exe.log, ASCII 8->28 dropped 42 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->42 44 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->44 12 Catalog.exe 2 8->12         started        16 schtasks.exe 1 8->16         started        18 Catalog.exe 8->18         started        signatures6 process7 dnsIp8 32 us2.smtp.mailhostbox.com 208.91.198.143, 49747, 587 PUBLIC-DOMAIN-REGISTRYUS United States 12->32 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->46 48 Tries to steal Mail credentials (via file access) 12->48 50 Tries to harvest and steal ftp login credentials 12->50 52 2 other signatures 12->52 20 conhost.exe 16->20         started        signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/def4b160ee042e7bcbd75cb191c3d366e4df9290ac7e2c41fe9305cdfc1ab1d2/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-31 07:13:06 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=332lcyhoaqxhxs6xlsyzdq6tm3sn7euqvr7cyqp6smc437a2whja._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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e10eb374689e800446850be0977a4911b17f16b190c58f6a2acccfda9fa33ed2
AgentTesla
+ 10'658 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200731-jeqx6k4an6/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
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/def4b160ee042e7bcbd75cb191c3d366e4df9290ac7e2c41fe9305cdfc1ab1d2

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 092db1e31fdadc6a16aeca185441a088c6fe577f9ac2b3d0f87c1254318c6f98

AgentTesla

Executable exe def4b160ee042e7bcbd75cb191c3d366e4df9290ac7e2c41fe9305cdfc1ab1d2

(this sample)

  
Dropped by
MD5 0f1dccad078c29cd04e8648b80b9d567
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/35918/
  
Dropped by
SHA256 092db1e31fdadc6a16aeca185441a088c6fe577f9ac2b3d0f87c1254318c6f98

Comments