MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3ab58a49c5634a26cb2f625a97ad065d8f03d8dce711e2581e3521e2bae2b6c8. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3ab58a49c5634a26cb2f625a97ad065d8f03d8dce711e2581e3521e2bae2b6c8
SHA3-384 hash: 3b6b6169416727619c15eeaf5019e1f81ae3bf2e1e7896df102dc3ae4ab290e9a30bcbcd1c0287138b1fa6b60b733317
SHA1 hash: 73db196c5625a6ab35ea9af61090d4a31d96ef4d
MD5 hash: b39376d21c173d4865cb64dcdd4627d3
humanhash: massachusetts-rugby-shade-solar
File name:Order lists.jpg.jpg.scr
Download: download sample
Signature GuLoader
Create hunting rule
File size:94'208 bytes
First seen:2020-08-13 07:35:03 UTC
Last seen:2020-08-13 09:03:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 190aafeef45e950d287ca03545c9e781 (1 x GuLoader)
ssdeep 1536:0VY6SN6ZRLddddGdddddzU0Sddddddddddddddddddddddddddddddddd5hmlwnG:0VY6QD+nyayciDr
TLSH 2C933A11DAC8E8F2F215C6B82D7531F7057AAC3106B64E0F1C5E7E5A6A36967A13230F
Reporter abuse_ch
Tags:GuLoader scr


Avatar
abuse_ch
Malspam distributing GuLoader:

HELO: hwsrv-761317.hostwindsdns.com
Sending IP: 104.168.173.112
From: info@ricksaezp.com
Reply-To: info@ricksaezp.com
Subject: Quote#CON-071720-EB
Attachment: Products_Order_Pictures.zip (contains "Order lists.jpg.jpg.scr")

GuLoader payload URL:
https://onedrive.live.com/download?cid=6A7B40A2BC530C6C&resid=6A7B40A2BC530C6C%21107&authkey=AImA0SeotHLbN2A

Intelligence

File Origin
# of uploads :
2
# of downloads :
166
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/44922/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader34.22379.8622.25613.UNOFFICIAL
Create hunting rule

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
Using the Windows Management Instrumentation requests
Forced shutdown of a system process
Setting a single autorun event
Unauthorized injection to a system process
Result
Threat name:
AgentTesla GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/425347
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 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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 265229 Sample: Order lists.jpg.jpg.scr Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Sigma detected: RegAsm connects to smtp port 2->45 47 Yara detected GuLoader 2->47 49 3 other signatures 2->49 7 Order lists.jpg.jpg.exe 1 2->7         started        10 uforstaaelighed.scr 1 2->10         started        12 uforstaaelighed.scr 1 2->12         started        14 OpenWith.exe 2->14         started        process3 signatures4 67 Writes to foreign memory regions 7->67 69 Tries to detect Any.run 7->69 71 Hides threads from debuggers 7->71 16 RegAsm.exe 2 20 7->16         started        21 RegAsm.exe 10 10->21         started        73 Machine Learning detection for dropped file 12->73 23 RegAsm.exe 1 12->23         started        process5 dnsIp6 33 smtp.yandex.ru 77.88.21.158, 49733, 49741, 587 YANDEXRU Russian Federation 16->33 35 onedrive.live.com 16->35 37 54j6lq.by.files.1drv.com 16->37 31 C:\Users\user\...\uforstaaelighed.scr, PE32 16->31 dropped 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->51 53 Tries to steal Mail credentials (via file access) 16->53 55 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->55 65 5 other signatures 16->65 25 conhost.exe 16->25         started        39 onedrive.live.com 21->39 41 54j6lq.by.files.1drv.com 21->41 57 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->57 59 Tries to harvest and steal ftp login credentials 21->59 61 Tries to harvest and steal browser information (history, passwords, etc) 21->61 63 Installs a global keyboard hook 21->63 27 conhost.exe 21->27         started        29 conhost.exe 23->29         started        file7 signatures8 process9
Detection:
guloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3ab58a49c5634a26cb2f625a97ad065d8f03d8dce711e2581e3521e2bae2b6c8/
Threat name:
Win32.Trojan.Vebzenpak
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 07:36:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hk2yusofmnfcnszpmjnjpliglwhqhwg444i6ewa6guq6foxcw3ea._file
Verdict:
malicious
Label(s):
guloader
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
persistence spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200813-hzgya5vx8s/
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:
Cryptor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3ab58a49c5634a26cb2f625a97ad065d8f03d8dce711e2581e3521e2bae2b6c8

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

zip c4ecbbb0b0a77441777b410cd470e87c5cfa866e3083ff90b208829e7b20213c

GuLoader

Executable exe 3ab58a49c5634a26cb2f625a97ad065d8f03d8dce711e2581e3521e2bae2b6c8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/431587/
  
Dropped by
MD5 5345de9b08b2eb39d535a5e50a7abf40
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 c4ecbbb0b0a77441777b410cd470e87c5cfa866e3083ff90b208829e7b20213c
Cape
Cape
https://www.capesandbox.com/analysis/44922/

Comments