MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 545bc37874b09c18f4fcef578eb3f9f3d47673255bbc32bc41986fc4e71f896f. 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
GuLoader
Vendor detections: 8
| SHA256 hash: | 545bc37874b09c18f4fcef578eb3f9f3d47673255bbc32bc41986fc4e71f896f |
|---|---|
| SHA3-384 hash: | b763e7414aa049eb46cb2a5ed3c6630bee24ddd7088cd990b9b364ee856cdd173017f7a80ca874d1d5d74ec7e26efd22 |
| SHA1 hash: | e0166d84f215f22214b3defdcf7a95b9fab08bd1 |
| MD5 hash: | 0cf18e4d1314f04aead5d33dfd97af18 |
| humanhash: | white-may-nitrogen-juliet |
| File name: | Shipment Invoice.jpg.jpg.jpg.jpg.scr |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 98'304 bytes |
| First seen: | 2020-08-12 14:38:04 UTC |
| Last seen: | 2020-08-12 15:56:24 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 88b498d6d44bb8ecb8d6a3db2331e54b (2 x GuLoader) |
| ssdeep | 1536:/hSgJomMNbP/feZ8BIMa2bpqCTaVR109fNJ:/hkFPneZ9x21fNJ |
| Threatray | 109 similar samples on MalwareBazaar |
| TLSH | 30A33B42D6488571F765C3F01D364DB300BA7C799965AE0BAC9D3A1A3BBBE43D062327 |
| Reporter |  abuse_ch |
| Tags: | GuLoader scr |
abuse_ch
Malspam distributing GuLoader:HELO: slot0.ricksaezp.com
Sending IP: 104.168.173.112
From: info@ricksaezp.com
Reply-To: info@ricksaezp.com
Subject: Ready now for the Business
Attachment: Logo_Invoice_Myself_pdf.zip (contains "Shipment Invoice.jpg.jpg.jpg.jpg.scr")
GuLoader payload URL:
https://landzro365groupe.com/wp-content/or4/oriyande40_ipHHXO2.bin
Intelligence
File Origin
# of uploads :
2
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Creating a file
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Setting a single autorun event
Unauthorized injection to a system process
Result
Threat name:
AgentTesla GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Contains functionality to hide a thread from the debugger
Creates autostart registry keys with suspicious values (likely registry only malware)
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
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: RegAsm connects to smtp port
Tries to detect Any.run
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Detection:
guloader
Threat name:
Win32.Trojan.Vebzenpak
Status:
Malicious
First seen:
2020-08-12 14:39:07 UTC
AV detection:
22 of 27 (81.48%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
guloader
Similar samples:
+ 99 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
spyware keylogger trojan stealer family:agenttesla persistence
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.10
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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