MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8a91203698a5589c1787d9fb31dbbc30ab3229a6aee56992f9186a4d4fc4ae2c. 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: 5
| SHA256 hash: | 8a91203698a5589c1787d9fb31dbbc30ab3229a6aee56992f9186a4d4fc4ae2c |
|---|---|
| SHA3-384 hash: | a8e9ec9976fdb58f12003d94d1376261d05b0d1755eebbbd4b967d8920ab8ad6ec668d52d593289a19b2134774341083 |
| SHA1 hash: | b38bb550f789d6f6885e48217dabb8c7d978ad3a |
| MD5 hash: | 15807bfc25c58a4284ce81c19fc552f9 |
| humanhash: | white-steak-oranges-south |
| File name: | OVERDUE INVOICE SWIFT - PAYMENT COPY.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 94'208 bytes |
| First seen: | 2020-10-26 14:53:15 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 02d03956d3718b494e226bdaa75e0b1f (10 x GuLoader) |
| ssdeep | 1536:4tiIan+3uivL8VFVryTUnB8Fw6JO49tN4o:OmMuivL8z5yTiSFwD44o |
| Threatray | 336 similar samples on MalwareBazaar |
| TLSH | 02931823B97D8543DC6557F4AE0B8FB80A4FFE15A1822BCB21E60E9E773C5054C5E229 |
| Reporter |  abuse_ch |
| Tags: | exe GuLoader |
abuse_ch
Malspam distributing GuLoader:HELO: xwx0.319.xoron.ml
Sending IP: 104.131.71.115
From: Regger-fils Worldwide Co Ltd <capz@kunkun.ml>
Subject: Re;OVERDUE INVOICE SWIFT - PAYMENT COPY
Attachment: OVERDUE INVOICE SWIFT - PAYMENT COPY.rar (contains "OVERDUE INVOICE SWIFT - PAYMENT COPY.exe")
GuLoader payload URL:
https://millenium-rj.com//mapsz/Adc_iFoOuijC244.bin
Intelligence
File Origin
# of uploads :
1
# of downloads :
176
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Clean
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Result
Threat name:
FormBook GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Contains functionality to hide a thread from the debugger
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
Executable has a suspicious name (potential lure to open the executable)
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected Generic Dropper
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Vebzenpak
Status:
Malicious
First seen:
2020-10-26 08:19:38 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
guloader
Similar samples:
+ 326 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
1/10
Tags:
n/a
Behaviour
Suspicious use of SetWindowsHookEx
Please note that we are no longer able to provide a coverage score for Virus Total.
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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