MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7879f81b9af693705fbbda07a1a2a5ebfdcccc7b1184f70fd6d3285da9f2f2d. 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: a7879f81b9af693705fbbda07a1a2a5ebfdcccc7b1184f70fd6d3285da9f2f2d
SHA3-384 hash: 2c509fe26eecb42cce6a8af888d446f8578d2ce457016ddc1f8d40d5c49709baab5b0af296f8e162652b1d9974f3f195
SHA1 hash: ff913e68785f4aab041c85fce1e039087fc09757
MD5 hash: 2b3645fa1dba023aa4f7a32b84242839
humanhash: lamp-winter-zebra-hydrogen
File name:NEW RFQ.exe
Download: download sample
Signature AgentTesla
File size:743'424 bytes
First seen:2020-07-31 17:14:35 UTC
Last seen:2020-07-31 17:40:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:2MzMNObfGjIl6cqgrIGq9aR6CZY+o3+w+fBu+7wuEDDUudIOBzhY7P:fINGfGjqqgrIQ63+Vc+EuM3
TLSH F4F4C0447B50E50EC66F8F7ADAD44900EAB8F9964B17E38774C133BF18CE3AA99015B1
Reporter @James_inthe_box
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
50
Origin country :
FR FR
Mail intelligence
Geo location:
Global
Volume:
Low
Vendor Threat Intelligence
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)
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: 255485 Sample: NEW RFQ.exe Startdate: 01/08/2020 Architecture: WINDOWS Score: 100 32 g.msn.com 2->32 54 Found malware configuration 2->54 56 Yara detected AgentTesla 2->56 58 Yara detected AntiVM_3 2->58 60 4 other signatures 2->60 7 YYtJku.exe 1 2->7         started        10 NEW RFQ.exe 1 2->10         started        13 YYtJku.exe 2->13         started        signatures3 process4 file5 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->62 64 Machine Learning detection for dropped file 7->64 66 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->66 15 YYtJku.exe 2 7->15         started        30 C:\Users\user\AppData\...30EW RFQ.exe.log, ASCII 10->30 dropped 68 Injects a PE file into a foreign processes 10->68 19 NEW RFQ.exe 2 5 10->19         started        22 NEW RFQ.exe 10->22         started        24 YYtJku.exe 2 13->24         started        signatures6 process7 dnsIp8 34 mail.flsrnidth.com 15->34 42 Tries to harvest and steal ftp login credentials 15->42 44 Tries to harvest and steal browser information (history, passwords, etc) 15->44 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->46 36 flsrnidth.com 167.114.220.88, 49757, 49758, 587 OVHFR Canada 19->36 38 mail.flsrnidth.com 19->38 40 192.168.2.1 unknown unknown 19->40 26 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 19->26 dropped 28 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 19->28 dropped 48 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->48 50 Moves itself to temp directory 19->50 52 Tries to steal Mail credentials (via file access) 19->52 file9 signatures10
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-31 14:22:36 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 behavior: EnumeratesProcesses
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.

  
Delivery method
Other

Comments