MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26. 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: 7


Intelligence 7 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26
SHA3-384 hash: 627ce8649e54d7eeec9e69a0b21204154db17d3e16935644d3466d98f1c4d4087f4f72c993487ef01a11ed03541139d2
SHA1 hash: f7ec0e9b790b42c5a1b094460879674af1c65806
MD5 hash: 385a9512ddecd69116dfa97bf7e6be06
humanhash: lactose-delta-high-colorado
File name:SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.9692.13771
Download: download sample
Signature GuLoader
Create hunting rule
File size:286'480 bytes
First seen:2022-03-08 13:05:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:tYa6PKZc2aSvEi+fIBYAttdZE+keIWQ/I3Kz9h:tYtKjTvEi+CLbIWQLz9h
Threatray 9'807 similar samples on MalwareBazaar
TLSH T1D3541216B780C052ECA21A3025B6067BBFF15E2A5569D31B0701CB7AFAD23429D2FB57
File icon (PE):PE icon
dhash icon c4dadadad2f492c2 (25 x GuLoader, 14 x RemcosRAT, 7 x AgentTesla)
Reporter SecuriteInfoCom
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Autography7
Issuer:Autography7
Algorithm:sha256WithRSAEncryption
Valid from:2022-03-08T06:38:14Z
Valid to:2023-03-08T06:38:14Z
Serial number: 00
Intelligence: 325 malware samples on MalwareBazaar are signed with this code signing certificate
Cert Graveyard Blocklist:This certificate is on the Cert Graveyard blocklist
Thumbprint Algorithm:SHA256
Thumbprint: b150e7c84e3a5b3e4859205cee31c355f4cdf181a36655faf2b348daa3e58471
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
251
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/248268/
Detection(s):
SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.9692.13771.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
DNS request
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/8572/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/622799e0b94fb38cb43fc029/reports/64bea555-02e2-445e-b37d-1f0acd6c179b/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/46ecd2b2-3574-4c81-afd9-5add9c919db1
Result
Threat name:
AgentTesla GuLoader SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.bank.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/952560
Signature
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if browser processes are running
Checks if the current machine is a virtual machine (disk enumeration)
Contains functionality to compare user and computer (likely to detect sandboxes)
Creates a thread in another existing process (thread injection)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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 harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Yara detected SmokeLoader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 585039 Sample: SecuriteInfo.com.UDS.Trojan... Startdate: 08/03/2022 Architecture: WINDOWS Score: 100 68 venis.ml 2->68 70 processadoraperu.com 2->70 72 api.telegram.org 2->72 78 Multi AV Scanner detection for domain / URL 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 10 other signatures 2->84 12 SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.9692.exe 22 2->12         started        16 aiccbaw 18 2->16         started        signatures3 process4 file5 60 C:\Users\user\AppData\Local\...\updater.exe, PE32 12->60 dropped 62 C:\Users\user\AppData\Local\...\System.dll, PE32 12->62 dropped 64 C:\Users\user\AppData\Local\...\WSEnable.exe, PE32 12->64 dropped 124 Writes to foreign memory regions 12->124 126 Tries to detect Any.run 12->126 128 Hides threads from debuggers 12->128 18 CasPol.exe 15 13 12->18         started        23 CasPol.exe 12->23         started        66 C:\Users\user\AppData\Local\...\System.dll, PE32 16->66 dropped 130 Machine Learning detection for dropped file 16->130 132 Sample uses process hollowing technique 16->132 signatures6 process7 dnsIp8 74 processadoraperu.com 185.151.147.220, 49743, 49745, 49763 EQUINIX-CONNECT-EMEAGB Italy 18->74 76 api.telegram.org 149.154.167.220, 443, 49776, 49785 TELEGRAMRU United Kingdom 18->76 54 C:\Users\user\AppData\Roaming\win32.exe, PE32 18->54 dropped 94 Tries to steal Mail credentials (via file / registry access) 18->94 96 Tries to harvest and steal ftp login credentials 18->96 98 Tries to harvest and steal browser information (history, passwords, etc) 18->98 104 2 other signatures 18->104 25 win32.exe 19 18->25         started        29 conhost.exe 18->29         started        100 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 23->100 102 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 23->102 file9 signatures10 process11 file12 56 C:\Users\user\AppData\Local\...\System.dll, PE32 25->56 dropped 118 Machine Learning detection for dropped file 25->118 120 Tries to detect Any.run 25->120 122 Hides threads from debuggers 25->122 31 win32.exe 6 25->31         started        signatures13 process14 signatures15 134 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 31->134 136 Tries to detect Any.run 31->136 138 Maps a DLL or memory area into another process 31->138 140 3 other signatures 31->140 34 explorer.exe 4 31->34 injected process16 file17 50 C:\Users\user\AppData\Roaming\aiccbaw, PE32 34->50 dropped 52 C:\Users\user\AppData\Local\Temp\D857.exe, PE32 34->52 dropped 86 Benign windows process drops PE files 34->86 88 Injects code into the Windows Explorer (explorer.exe) 34->88 90 Writes to foreign memory regions 34->90 92 Hides that the sample has been downloaded from the Internet (zone.identifier) 34->92 38 explorer.exe 34->38         started        41 D857.exe 19 34->41         started        44 explorer.exe 34->44         started        46 3 other processes 34->46 signatures18 process19 file20 106 Checks if browser processes are running 38->106 108 Tries to harvest and steal browser information (history, passwords, etc) 38->108 110 Contains functionality to compare user and computer (likely to detect sandboxes) 38->110 48 WerFault.exe 38->48         started        58 C:\Users\user\AppData\Local\...\System.dll, PE32 41->58 dropped 112 Machine Learning detection for dropped file 41->112 114 Tries to detect Any.run 41->114 116 Hides threads from debuggers 41->116 signatures21 process22
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2022-03-08 11:52:01 UTC
File Type:
PE (Exe)
Extracted files:
29
AV detection:
15 of 42 (35.71%)
Threat level:
  5/5
Verdict:
unknown
Similar samples:
0d6331c8cf26f9acc508301a955dc0ff69034b240b751553eb4f155a3be322aa
GuLoader
1235559275e785007232e4aee35bd0609d1e52da4900ac8526ff54b592d63c6b
GuLoader
23b5df2d469238921bc4292d4ad2f179d57b19eba17a93c37af5d3ccae03f1c0
GuLoader
338ee076a3641ab7a652189d830ee26334743a6b1c66925d12d54b755a2421b9
GuLoader
59819eed25c7ec484455237149273827c8c3476bf961f5be7443e856d3131259
GuLoader
8d46e23eb84b906ad34292716d0d06eb9a26a87157da5b45f2e5583aaedb9a05
GuLoader
da3208711d472f6c9af1141faa1272cab7b80cbaef1cfe0c24c5b1597f7a0c99
GuLoader
+ 9'797 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger spyware stealer trojan
Link:
https://tria.ge/reports/220308-qb37raehh4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
AgentTesla Payload
AgentTesla
Guloader,Cloudeye
Malware Config
C2 Extraction:
https://api.telegram.org/bot5013020608:AAFu_btAZRcQ9V-SvEIxL9rCbb_x1A-9IJo/sendDocument
Unpacked files
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
Link:
https://www.unpac.me/results/e87f898b-bf37-4e1e-946f-355dd4e39602/
SH256 hash:
744fc7a68022f64f453dd2eef369ec5e8cbbecfac605e0bdbddfaa248d94e5f9
MD5 hash:
edd598bdd9f323b249d0aac2aa3a324b
SHA1 hash:
91e4fc51d183866841addf4fc8d20ce6153b7d5d
Link:
https://www.unpac.me/results/e87f898b-bf37-4e1e-946f-355dd4e39602/
SH256 hash:
467fe7d4440131bc4d924cbe937e2ad0faf328c02905c95744b3acf7fa8dfe9a
MD5 hash:
585ee8c679547bf6e00d3bcc0bae9532
SHA1 hash:
d32e63af2c947c9a277642d731ac5e8bb0b66f4c
Link:
https://www.unpac.me/results/e87f898b-bf37-4e1e-946f-355dd4e39602/
SH256 hash:
3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26
MD5 hash:
385a9512ddecd69116dfa97bf7e6be06
SHA1 hash:
f7ec0e9b790b42c5a1b094460879674af1c65806
Link:
https://www.unpac.me/results/e87f898b-bf37-4e1e-946f-355dd4e39602/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3f052dcdd51d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26

File information

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

Web download

GuLoader

Executable exe 3f052dcdd51d6e08fd7cc2bf9e60516120f66b241d6deb5f91c1669f554bbb26

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2083729/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/248268/

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