MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee
SHA3-384 hash: 795f337885d3987b193c9253775a63aa71f6c51f60258c3a535eecb8aeecd8e16159e68c99dd4d506e79b68a2a9f5512
SHA1 hash: 4a0691d73600788c1d292e7a34cad8ded6560eef
MD5 hash: 33ba731632633243726595686cba6f19
humanhash: missouri-iowa-sixteen-washington
File name:Notificación-AEAT.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:769'948 bytes
First seen:2023-10-11 19:23:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 671f2a1f8aee14d336bab98fea93d734 (182 x GuLoader, 4 x Formbook, 4 x RemcosRAT)
ssdeep 12288:M0f2JEhxPvtbe7AhOJHXkSkfpVTLlQ5lTweXtTYVNPvwfj9HBrRYzzpTq:M0foEhxX0Uh8XkS0pVTLeH9T2PoftxGs
Threatray 300 similar samples on MalwareBazaar
TLSH T1FBF4120175E0D877C47906B38C7BD6F8AEBAAD594CEA0B832355772E7CB6781B40D206
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
274
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Notificación-AEAT.exe
Verdict:
Malicious activity
Analysis date:
2023-10-11 20:30:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/24e3b92b-e669-45e8-84e4-383b0b6a76b6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/453449/
Detection(s):
SecuriteInfo.com.Trojan.Siggen21.38882.8986.21165.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Delayed reading of the file
Searching for the window
Creating a file in the %temp% subdirectories
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/6526f65528455aedec0f9c61/reports/bb3bcb9c-f877-4815-9956-7580674db491/overview
Verdict:
Malicious
Labled as:
Tedy.Generic
Link:
https://www.hybrid-analysis.com/sample/ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/62ca4f1d-a4d6-47f3-9564-dbe500647ecc
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1324139
Signature
Maps a DLL or memory area into another process
Mass process execution to delay analysis
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1324139 Sample: Notificaci#U00f3n-AEAT.exe Startdate: 11/10/2023 Architecture: WINDOWS Score: 84 38 googlehosted.l.googleusercontent.com 2->38 40 drive.google.com 2->40 42 3 other IPs or domains 2->42 50 Yara detected GuLoader 2->50 8 Notificaci#U00f3n-AEAT.exe 1 36 2->8         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->34 dropped 36 C:\Users\user\AppData\Local\...\System.dll, PE32 8->36 dropped 52 Writes to foreign memory regions 8->52 54 Mass process execution to delay analysis 8->54 56 Maps a DLL or memory area into another process 8->56 12 CasPol.exe 8->12         started        16 powershell.exe 8->16         started        18 powershell.exe 8->18         started        20 78 other processes 8->20 signatures6 process7 dnsIp8 44 api4.ipify.org 173.231.16.77, 443, 50016 WEBNXUS United States 12->44 46 googlehosted.l.googleusercontent.com 142.250.188.225, 443, 50015 GOOGLEUS United States 12->46 48 drive.google.com 142.250.72.142, 443, 50014 GOOGLEUS United States 12->48 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->58 60 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->60 62 Tries to steal Mail credentials (via file / registry access) 12->62 64 Tries to harvest and steal browser information (history, passwords, etc) 12->64 22 conhost.exe 16->22         started        24 conhost.exe 18->24         started        26 conhost.exe 20->26         started        28 conhost.exe 20->28         started        30 conhost.exe 20->30         started        32 75 other processes 20->32 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-10-09 19:04:34 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5qsbgcp4pdla5td5zokuidkjrhxc4rvrktybitvldciwkh73xtxa._file
Verdict:
malicious
Similar samples:
030ca745bb45c5cba7e0dc933c2f36aa7c27a3716929027e1b9aa64c6ed60f81
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08617ac03620863f2105bbb16f26c851a360b2c277c77b80bba81356ad5b9900
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09d071d33e9aedd10788a8fb405416f40be21301f741e1c2690007cfad11a219
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2123ed455056e9b004781b40a5210e0b9d10bac6fbc49ce063b2b9209eeb508b
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6eeeb05646dc1c6db8f8fb818a3148548100334ec73108506e5434e5f18b8888
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87a8c6294c7bfeece375857edf3b1a16a2a7c1d42fc9f2463e31f45b36135ef1
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96438d0b3067337c39266737d24db93641628d21e661e517568cdd31020703d5
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a71c9e5f6f83bccde192cff4982c7483ceaa6c3f9e6b309f0c36cedfccf3e837
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defaa7299868b133e17be2d9e306ffe90b6fee35f5efdc6b234593f5321d9ee5
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f597a169eff0fcb60de34630635da598c0b90ff4c96764844d0aebca18fa3988
GuLoader
+ 290 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231011-x4dacsgf2w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
bcb93204bd1854d0c34fa30883bab51f6813ab32abf7fb7d4aeed21d71f6af87
MD5 hash:
6c881f00ba860b17821d8813aa34dbc6
SHA1 hash:
0e5a1e09b1ce1bc758d6977b913a8d9ccbe52a13
Link:
https://www.unpac.me/results/3eb45929-8e7b-4c99-809c-27def102e794/
SH256 hash:
832da3cff792135ecb98f44c387bea3a8e2e9bd096b917303ca8b9dc71d60365
MD5 hash:
50a9396a761bf245ed4df1b08782d6f2
SHA1 hash:
e01a99100e91801abe074341b0c77cca6220f0bd
Link:
https://www.unpac.me/results/3eb45929-8e7b-4c99-809c-27def102e794/
SH256 hash:
c2c1bb44cbf38da50e56e01faf58e3dc96278bc47fb416ae3e3d2d314f1d52c6
MD5 hash:
3545c25d3370cd95b4545da3f111f623
SHA1 hash:
56ef00e4c69160b071d7c138f7723ced46e27d91
Link:
https://www.unpac.me/results/3eb45929-8e7b-4c99-809c-27def102e794/
SH256 hash:
ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee
MD5 hash:
33ba731632633243726595686cba6f19
SHA1 hash:
4a0691d73600788c1d292e7a34cad8ded6560eef
Link:
https://www.unpac.me/results/3eb45929-8e7b-4c99-809c-27def102e794/
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/ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

GuLoader

Executable exe ec241309fc78d60ecc7dcb95440d4989ee2e46b154f0144eab1891651ffbbcee

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/453449/

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