MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b681ce953d7122c634acb0c68e4885a7e6d182acfbc43f886160b2796f452d99. 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: b681ce953d7122c634acb0c68e4885a7e6d182acfbc43f886160b2796f452d99
SHA3-384 hash: 24ce70d92cf75346273bcc3cf299ac24de06557168fe97555e32681923662cddb6e25d45b98e32bfd6e6d60da9a76aa9
SHA1 hash: 7451b2517d7373f7a81c0876fd66bce472321f79
MD5 hash: 079e6eb484455032acf3b2fd4c11299d
humanhash: shade-artist-monkey-glucose
File name:NEW RFQ..exe
Download: download sample
Signature AgentTesla
File size:758'784 bytes
First seen:2020-07-31 09:59:01 UTC
Last seen:2020-07-31 11:09:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:uMT6Grl4zGq5IySWoDrivjaWuFK7zROjVa1AgmeYAdJRKVav5g9aE1:uMZlK1Im2rivjaZ6tOQXjdJggh
TLSH 72F4C0047B90D50EC76B8F7ACAD44900EDF8E99A4B17E38774C177AF18CE3AA99015B1
Reporter @abuse_ch
Tags:AgentTesla exe


Twitter
@abuse_ch
Malspam distributing AgentTesla:

HELO: vps.confidencegroup.co
Sending IP: 162.144.54.78
From: Judy Lee <hk@jiballoubnan.com>
Subject: NEW RFQ
Attachment: NEW RFQ.7z (contains "NEW RFQ..exe")

AgentTesla SMTP exfil server:
194.5.97.91:587

Intelligence


File Origin
# of uploads :
2
# of downloads :
30
Origin country :
US US
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
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: Capture Wi-Fi password
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-30 22:59:35 UTC
AV detection:
21 of 31 (67.74%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer spyware persistence trojan family:agenttesla
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Suspicious use of SetThreadContext
Modifies service
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Threat name:
AgentTesla
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 b681ce953d7122c634acb0c68e4885a7e6d182acfbc43f886160b2796f452d99

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments