MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 16f661258c7572ebd08fa986cfe3e2f1b24196d366d048102900e60979f42ca4. 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: 16f661258c7572ebd08fa986cfe3e2f1b24196d366d048102900e60979f42ca4
SHA3-384 hash: 7ed556a5dbae17e3feffed98f2d3f3e24a99826f26a05849f04857f49cdc8633c8cc6b13aeb0cd5efd905d284e179924
SHA1 hash: 36a0ae19084417b1c8a148946f80512ea4666d47
MD5 hash: e5804ae69d56f7a6a61cebed35496ab3
humanhash: shade-freddie-hamper-seventeen
File name:Swift copy.doc...exe
Download: download sample
Signature AgentTesla
File size:633'856 bytes
First seen:2020-07-31 15:09:48 UTC
Last seen:2020-07-31 15:36:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:MiU6u5kMMf2DedIMGP+OOxuaB9Z3aaaaaT5Uaaaaa:MiU6u5Fpm7G2OOkaB9Z
TLSH CED4486B60FD21E7F415277D4EA7825B8F51BF3A2963891F163438F66338F881582E21
Reporter @James_inthe_box
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
55
Origin country :
US US
Mail intelligence
Geo location:
Global
Volume:
Low
Geo location:
CH Switzerland
Volume:
Low
Geo location:
NL Netherlands
Volume:
Low
Vendor Threat Intelligence
Gathering data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies the hosts file
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 255462 Sample: Swift copy.doc...exe Startdate: 01/08/2020 Architecture: WINDOWS Score: 100 47 g.msn.com 2->47 49 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->49 59 Found malware configuration 2->59 61 Sigma detected: Scheduled temp file as task from temp location 2->61 63 Yara detected AgentTesla 2->63 65 5 other signatures 2->65 9 Swift copy.doc...exe 7 2->9         started        12 FHDzY.exe 2 2->12         started        14 FHDzY.exe 1 2->14         started        signatures3 process4 file5 37 C:\Users\user\AppData\...\&startupname&.exe, PE32 9->37 dropped 39 C:\Users\user\AppData\Local\...\tmp6FAE.tmp, XML 9->39 dropped 41 C:\...\&startupname&.exe:Zone.Identifier, ASCII 9->41 dropped 43 C:\Users\user\...\Swift copy.doc...exe.log, ASCII 9->43 dropped 16 RegSvcs.exe 2 4 9->16         started        21 schtasks.exe 1 9->21         started        23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        process6 dnsIp7 45 smtp.vivaldi.net 31.209.137.12, 49757, 587 HRINGDU-ASIS Iceland 16->45 33 C:\Users\user\AppData\Roaming\...\FHDzY.exe, PE32 16->33 dropped 35 C:\Windows\System32\drivers\etc\hosts, ASCII 16->35 dropped 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->51 53 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->53 55 Tries to steal Mail credentials (via file access) 16->55 57 5 other signatures 16->57 27 reg.exe 1 16->27         started        29 conhost.exe 21->29         started        file8 signatures9 process10 process11 31 conhost.exe 27->31         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2020-07-31 15:08:59 UTC
AV detection:
21 of 31 (67.74%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry key
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Drops file in Drivers directory
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.

  
Delivery method
Other

Comments