MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 47ccdee28a4d20ec5d8234d66a5b95b2f3dfd2966b3a63e38af94f9cdfcc7c2d. 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


Intelligence File information Yara 3 Comments

SHA256 hash: 47ccdee28a4d20ec5d8234d66a5b95b2f3dfd2966b3a63e38af94f9cdfcc7c2d
SHA3-384 hash: 43d3a5a4633236e23a4498fc297d79cff432297344974d6e016e75394748eb3e07f742f9c79fadfe0256ce38c937815a
SHA1 hash: c1dd9b1823b6945833d1416c5d79ed7b72038b4a
MD5 hash: e2c5a557e2b9231f37e735277b2d3492
humanhash: romeo-comet-river-twelve
File name:Purchase Order.exe
Download: download sample
Signature AgentTesla
File size:515'584 bytes
First seen:2020-07-31 12:05:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:DzSTKCp9hKkFFeqZ1Ad3cFeu3kyKFnOAQYS2SNzltif:DzSTKCpvKkFHZe1cUuUyCxFwt
TLSH D5B4DF5CB0EA651EF01536BF9FF9829BCEA6E42F0283465B16752587817C7082FC1E72
Reporter @abuse_ch
Tags:AgentTesla exe


Twitter
@abuse_ch
Malspam distributing AgentTesla:

HELO: agswitch.com
Sending IP: 37.49.230.200
From: Arun James <agsqatar@agswitch.com>
Subject: Purchase Order
Attachment: Purchase Order.Z (contains "Purchase Order.exe")

AgentTesla SMTP exfil server:
mail.threewaystoharems.com:587

Intelligence


File Origin
# of uploads :
1
# of downloads :
35
Origin country :
US US
Mail intelligence
Geo location:
Global
Volume:
Low
Vendor Threat Intelligence
Gathering data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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
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)
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 255355 Sample: Purchase Order.exe Startdate: 31/07/2020 Architecture: WINDOWS Score: 100 32 g.msn.com 2->32 34 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->34 54 Found malware configuration 2->54 56 Yara detected AgentTesla 2->56 58 Yara detected AntiVM_3 2->58 60 5 other signatures 2->60 7 Purchase Order.exe 3 2->7         started        11 YYtJku.exe 2 2->11         started        13 YYtJku.exe 3 2->13         started        signatures3 process4 file5 30 C:\Users\user\...\Purchase Order.exe.log, ASCII 7->30 dropped 62 Injects a PE file into a foreign processes 7->62 15 Purchase Order.exe 2 5 7->15         started        20 Purchase Order.exe 7->20         started        22 YYtJku.exe 2 11->22         started        64 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 13->64 66 Machine Learning detection for dropped file 13->66 68 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 13->68 24 YYtJku.exe 2 13->24         started        signatures6 process7 dnsIp8 36 threewaystoharems.com 192.254.236.251, 49728, 49737, 587 UNIFIEDLAYER-AS-1US United States 15->36 38 mail.threewaystoharems.com 15->38 26 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 15->26 dropped 28 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 15->28 dropped 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->42 44 Moves itself to temp directory 15->44 46 Tries to steal Mail credentials (via file access) 15->46 40 mail.threewaystoharems.com 22->40 48 Tries to harvest and steal ftp login credentials 22->48 50 Tries to harvest and steal browser information (history, passwords, etc) 22->50 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->52 file9 signatures10
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-31 12:07:05 UTC
AV detection:
24 of 31 (77.42%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
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
AgentTesla Payload
AgentTesla
Threat name:
Kryptik
Score:
1.00

Yara Signatures


Rule name:Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
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

Executable exe 47ccdee28a4d20ec5d8234d66a5b95b2f3dfd2966b3a63e38af94f9cdfcc7c2d

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments