MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ab138bbc4c50028ba5fcb2f2fb9dd1907647c1503eefebf01ad0fbb2f8d92fb1. 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: 6
| SHA256 hash: | ab138bbc4c50028ba5fcb2f2fb9dd1907647c1503eefebf01ad0fbb2f8d92fb1 |
|---|---|
| SHA3-384 hash: | 00cc2b78b75c23201c4f54f11a003bb2d4f003f34978146821791f5440dadb659dcf9b2515232fd63566d2d877748ee1 |
| SHA1 hash: | 7ad18e3b79da8cbae3c94a47eab046c25a5a2e2a |
| MD5 hash: | a83609853c7fa9526f526fc38e2f31de |
| humanhash: | bravo-emma-jig-eighteen |
| File name: | BEST1.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 45'056 bytes |
| First seen: | 2020-10-09 06:31:28 UTC |
| Last seen: | 2020-10-09 08:02:58 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | baa2be13d1e80c03bea591b40e3102f5 (4 x GuLoader) |
| ssdeep | 384:8A+lbNFEJuLbcYmrftakL3mGMdCVKubJ6mdeV1vqZHwLCJbn:8A+lbXEJuLbcBlY5wKubJdtQWJb |
| Threatray | 71 similar samples on MalwareBazaar |
| TLSH | 1B137D1BF1609D71E59B8EF45E23DBA46197BD61AB414E0BB3C83B2E4EF1A048CD4316 |
| Reporter |  abuse_ch |
| Tags: | exe geo GuLoader KOR |
abuse_ch
Malspam distributing GuLoader:HELO: linux.avaserver.com
Sending IP: 95.217.137.242
From: 김병준 <bkim@hec-co.kr>
Reply-To: 김병준 <bkim@hec-co.kr>
Subject: RFQ For Canada New Energy Plant Project
Attachment: REF_Technical Drawing Sheet_Rev1.img (contains "BEST1.exe")
GuLoader payload URL:
http://iykemorelinkrtyu.webredirect.org/uploud//5bab0b1d864615bab0b1d864b3/bin_sHaUqYGGKr16.bin
Intelligence
File Origin
# of uploads :
2
# of downloads :
163
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:
rans.troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Contains functionality to hide a thread from the debugger
Detected RDTSC dummy instruction sequence (likely for instruction hammering)
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Potential malicious icon found
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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:
2020-10-09 01:20:07 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
guloader
Similar samples:
+ 61 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
1/10
Tags:
n/a
Behaviour
Suspicious use of SetWindowsHookEx
Unpacked files
SH256 hash:
ab138bbc4c50028ba5fcb2f2fb9dd1907647c1503eefebf01ad0fbb2f8d92fb1
MD5 hash:
a83609853c7fa9526f526fc38e2f31de
SHA1 hash:
7ad18e3b79da8cbae3c94a47eab046c25a5a2e2a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
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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