MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a465bb38250994671f200d8c66cfc0718354bc8974713ba6f9f3eb15a4acec7d. 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: 7
| SHA256 hash: | a465bb38250994671f200d8c66cfc0718354bc8974713ba6f9f3eb15a4acec7d |
|---|---|
| SHA3-384 hash: | 7b535010c037d5c20aa0081ac6de42c1f5cb91850868431ffd493669e93a48cd69f5ac87674c33dea8859ba8537a384f |
| SHA1 hash: | 9b17519322a93dd0a9740c7e42b6b45714dac5b1 |
| MD5 hash: | 8516b92ff700665a4e5360c3b464da28 |
| humanhash: | nitrogen-oranges-lion-july |
| File name: | Product inv.pdf.pdf.pdfpdf.scr |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 94'208 bytes |
| First seen: | 2020-08-14 09:54:20 UTC |
| Last seen: | 2020-08-14 11:01:42 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1490ba85370215d76136d84e6e732d42 (1 x GuLoader) |
| ssdeep | 1536:mduKab4xEy+vl1DG1goSU7X6yPqCTaVR1094:mdu+x/+vl1D9nAXd4 |
| Threatray | 567 similar samples on MalwareBazaar |
| TLSH | BC935A52E5889230F725C7F209340CF7007BAC3558659A0B9C4A3E2BBBB7E53916236B |
| Reporter |  abuse_ch |
| Tags: | GuLoader Hostwinds scr |
abuse_ch
Malspam distributing GuLoader:HELO: hwsrv-760908.hostwindsdns.com
Sending IP: 104.168.213.82
From: info@kamaehr.com
Reply-To: info@kamaehr.com
Subject: 5 x 40 ft Containers
Attachment: Product_Order_me.zip (contains "Product inv.pdf.pdf.pdfpdf.scr")
GuLoader payload URL:
https://onedrive.live.com/download?cid=0175CDBE2D2944C5&resid=175CDBE2D2944C5%21107&authkey=AL6UPTuBJMmUgO0
Intelligence
File Origin
# of uploads :
2
# of downloads :
233
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
Deleting a recently created file
Connection attempt
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 with a suspicious file extension
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
Found malware configuration
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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: 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:
Threat name:
Win32.Trojan.Vebzenpak
Status:
Malicious
First seen:
2020-08-14 09:42:45 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
guloader
Similar samples:
+ 557 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Score:
10/10
Tags:
spyware keylogger trojan stealer family:agenttesla persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
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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