MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 6617979630def30c8a103baceedd1ddb972a53b984de91682aa93451faf833bb. 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
| SHA256 hash: | 6617979630def30c8a103baceedd1ddb972a53b984de91682aa93451faf833bb |
|---|---|
| SHA3-384 hash: | 329d8547127d8c37a6f08effff797e533fac80e1ecaf06657b63ded4defdb8140e73c10d04c9705266a27755fecf49c9 |
| SHA1 hash: | ada3b9f684091350231c393962354c6c77c5695f |
| MD5 hash: | c289ec525b815c400eb88beb1f459489 |
| humanhash: | idaho-wisconsin-white-juliet |
| File name: | Me.jpg.jpg.jpg.jpg.scr |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 98'304 bytes |
| First seen: | 2020-08-12 18:31:51 UTC |
| Last seen: | 2020-08-12 20:01:24 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | bea341322c5df10092c0d8c8e7a956ea (1 x GuLoader) |
| ssdeep | 1536:q/F9RhueuFIWwqY3bri06oo4frRNtSX/0TFx:q/FgeuKWJ6PoUR60T7 |
| Threatray | 902 similar samples on MalwareBazaar |
| TLSH | B7A37D42BD88F572F62CC9B82E3904F705BA7C3149469E4B6C883E5BAE72D13C91535B |
| 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 "Me.jpg.jpg.jpg.jpg.scr")
GuLoader payload URL:
https://landzro365groupe.com/wp-content/fby/bin_GIRMjaYcsv1.bin
Intelligence
File Origin
# of uploads :
2
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Result
Threat name:
FormBook GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Benign windows process drops PE files
Contains functionality to hide a thread from the debugger
Detected FormBook malware
Hides threads from debuggers
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected FormBook
Yara detected Generic Dropper
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Detection:
guloader
Threat name:
Win32.Spyware.Noon
Status:
Malicious
First seen:
2020-08-12 15:43:46 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
2/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
guloader
Similar samples:
+ 892 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
rat trojan spyware stealer family:formbook persistence
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.yofdyk.com/hha/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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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