MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5bc5555d6b03bad237a916d07e05148d44cae649e932726a15ea1595fa60f4b. 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 4 Comments

SHA256 hash: f5bc5555d6b03bad237a916d07e05148d44cae649e932726a15ea1595fa60f4b
SHA3-384 hash: 71a464b62ae8025ea27fd1dceaaf7a4adab7c0f32bbda3f116b5660ada7e672b5878d6739cd4d2ee088a43b54c5e2d78
SHA1 hash: 4cf37ba99dd0a55045c2985b37a5fe64ef363120
MD5 hash: 68a39c3c66241675061f8d052c6fe4e7
humanhash: river-hawaii-hot-robert
File name:PURCHASE ORDER.exe
Download: download sample
Signature AgentTesla
File size:492'032 bytes
First seen:2020-07-31 09:57:30 UTC
Last seen:2020-07-31 11:09:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 12288:bqiFvBX2cMiruPMEIrvnKIC5U24qMU36oNWhHRaFwx9XbGr:BBGHiOMEIDzkr1KoN8HRuh
TLSH EFA4F1083640B3DFC64B8E328E515CA4EB60B5635B07E747BC9722ED985DA66CF012E3
Reporter @abuse_ch
Tags:AgentTesla exe


Twitter
@abuse_ch
Malspam distributing AgentTesla:

HELO: siddheshwarsugars.com
Sending IP: 95.211.253.211
From: Arslan Boltaev <electrical@siddheshwarsugars.com>
Subject: RE: NEW PURCHASE ORDER LIST
Attachment: PURCHASE ORDER.arj (contains "PURCHASE ORDER.exe")

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

Intelligence


File Origin
# of uploads :
2
# of downloads :
31
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
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
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 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:
Threat name:
ByteCode-MSIL.Ransomware.TeslaCrypt
Status:
Malicious
First seen:
2020-07-31 00:03:21 UTC
AV detection:
18 of 30 (60.00%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer trojan spyware family:agenttesla
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
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:
Trojan
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_g2
Author:Daniel Plohmann <daniel.plohmann@fkie.fraunhofer.de>
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 f5bc5555d6b03bad237a916d07e05148d44cae649e932726a15ea1595fa60f4b

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments