MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e6bdca558fb485e6ac7295d20f868902f2b790bc147fb3ab1e3a6628280d40f3. 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: e6bdca558fb485e6ac7295d20f868902f2b790bc147fb3ab1e3a6628280d40f3
SHA3-384 hash: 1a0efae7e4231e7d856d70738e362902d2d7c245ce69455eac87e452b5482bc99f2ed28630b434a2d4a28df56acadf40
SHA1 hash: 7ffd82856e48ad8a65b388e8e3c1cc347f045abf
MD5 hash: ee8ac2ac354aca32c315027e6fa69a64
humanhash: nineteen-nine-bravo-yankee
File name:Me.scr
Download: download sample
Signature GuLoader
Create hunting rule
File size:98'304 bytes
First seen:2020-08-13 13:45:55 UTC
Last seen:2020-08-13 14:54:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b0b09ac218f4f5a7ee0b80d047e9acc2 (1 x GuLoader)
ssdeep 768:8aXMrnAZb5IZ3NYdEaYIVdKgiKcBGyfugZxZ4NVUmTdT04N6DzP6tDHZn1Z0u:tXunhFaYVgiKcUyW+xMVUmpT0BCbYu
Threatray 2'246 similar samples on MalwareBazaar
TLSH ADA38C119E8C99B4F364C2F16B3051FB40F8FE34094E8E475D5B3F6A6AB6E16989034B
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.rar (contains "Me.scr")

GuLoader payload URL:
https://onedrive.live.com/download?cid=7FED4FBEA32E3C1E&resid=7FED4FBEA32E3C1E%21107&authkey=AEoXfycPoLIFch0

Intelligence

File Origin
# of uploads :
2
# of downloads :
181
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/45203/
Detection(s):
SecuriteInfo.com.Variant.Graftor.816111.15026.8444.UNOFFICIAL
Create hunting rule

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
Creating a file
Sending a custom TCP request
Deleting a recently created file
Creating a file in the %temp% directory
Connection attempt
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Threat name:
AgentTesla FormBook GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/426459
Signature
Contains functionality to hide a thread from the debugger
Hides threads from debuggers
Machine Learning detection for dropped file
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
Sigma detected: Suspicious Svchost Process
Tries to detect Any.run
Tries to detect virtualization through RDTSC time measurements
Yara detected AgentTesla
Yara detected FormBook
Yara detected Generic Dropper
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 265879 Sample: Me.scr Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 39 www.originalducatispareparts.com 2->39 41 originalducatispareparts.com 2->41 55 Malicious sample detected (through community Yara rule) 2->55 57 Yara detected GuLoader 2->57 59 Yara detected AgentTesla 2->59 61 6 other signatures 2->61 11 Me.exe 1 2->11         started        14 OpenWith.exe 16 6 2->14         started        signatures3 process4 signatures5 69 Tries to detect Any.run 11->69 71 Tries to detect virtualization through RDTSC time measurements 11->71 73 Hides threads from debuggers 11->73 75 Contains functionality to hide a thread from the debugger 11->75 16 Me.exe 4 14 11->16         started        process6 dnsIp7 33 onedrive.live.com 16->33 35 0wo3mq.bn.files.1drv.com 16->35 37 0jd9oq.db.files.1drv.com 16->37 31 C:\Users\user\AppData\Local\Temp\me, PE32 16->31 dropped 47 Modifies the context of a thread in another process (thread injection) 16->47 49 Tries to detect Any.run 16->49 51 Maps a DLL or memory area into another process 16->51 53 3 other signatures 16->53 21 explorer.exe 16->21 injected file8 signatures9 process10 dnsIp11 43 www.laacia.life 21->43 45 www.atarairdive.com 21->45 24 svchost.exe 21->24         started        process12 signatures13 63 Modifies the context of a thread in another process (thread injection) 24->63 65 Maps a DLL or memory area into another process 24->65 67 Tries to detect virtualization through RDTSC time measurements 24->67 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
guloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e6bdca558fb485e6ac7295d20f868902f2b790bc147fb3ab1e3a6628280d40f3/
Threat name:
Win32.Trojan.Strictor
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 13:47:04 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4264uvmpwsc6nldssxja7bujalzlpef4cr73hky6hjtcqkanidzq._file
Verdict:
malicious
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f1c80232eaed26af259c818427b444f12057b9329804da8ded13ec9fd20d3413
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+ 2'236 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook persistence
Link:
https://tria.ge/reports/200813-9hj5fxszf2/
Behaviour
Gathers network information
Modifies Internet Explorer settings
Modifies registry class
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
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
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
Link:
https://yomi.yoroi.company/submissions/e6bdca558fb485e6ac7295d20f868902f2b790bc147fb3ab1e3a6628280d40f3

File information

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

Malspam

GuLoader

rar ef5bf38b533e6b5c650782d9c28bf142a97f99cf6748f3bbce576c448bfe2b0c

GuLoader

Executable exe e6bdca558fb485e6ac7295d20f868902f2b790bc147fb3ab1e3a6628280d40f3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/431586/
  
Dropped by
MD5 91b962ebf4f334ca76fd3245f8a4607b
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45203/
  
Dropped by
SHA256 ef5bf38b533e6b5c650782d9c28bf142a97f99cf6748f3bbce576c448bfe2b0c

Comments