MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f. 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: 13


Intelligence 13 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f
SHA3-384 hash: c8afe40e970a8315478aef157949b3ff6d7025afcd756d0d4bfb8bb697fa3619759718ea7b37d8cc3298a91526fb1a9e
SHA1 hash: 0d88c4dabcfdcc35a5defb43689932f34f07c064
MD5 hash: 337d7a3acc48f89b9a8a7f68fafc74a8
humanhash: vegan-jupiter-alanine-kilo
File name:Ziraat Bankasi Swift Mesaji.pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:679'405 bytes
First seen:2024-03-04 13:41:26 UTC
Last seen:2024-03-04 15:23:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f23f452093b5c1ff091a2f9fb4fa3e9 (285 x GuLoader, 40 x RemcosRAT, 28 x VIPKeylogger)
ssdeep 12288:ZoIrbAsXcYgLgk11zjfiI6WX8rVFoTcZXFQ0tI8qPqTJMn0K9tJE7MNb+nmOd:ZrFxgdu68xFZQ0tDqP++n0I9+mM
TLSH T16EE4231BA87CC063FF9353B22CFD15DFE521F5A826D8E50782B8576F3A51261EA09B10
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) (4504/4/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter adrian__luca
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
335
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f.exe
Verdict:
Malicious activity
Analysis date:
2024-03-04 14:27:52 UTC
Tags:
evasion agenttesla stealer
Link:
https://app.any.run/tasks/d6dea85d-e26d-4e4a-b9ff-53aa36eae5bd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.543.5730.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% directory
Searching for the window
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/65e5cfbcf4f4cdd404ead86d/reports/213f6526-b4ba-4a94-b03b-c5fbad89849d/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f
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:
Malicious
Link:
https://analyze.intezer.com/analyses/62a98462-c757-44ce-a5ec-11a867b70050
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1402655
Signature
Antivirus detection for URL or domain
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Suspicious Double Extension File Execution
Suspicious powershell command line found
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1402655 Sample: Ziraat Bankasi Swift Mesaji... Startdate: 04/03/2024 Architecture: WINDOWS Score: 100 36 mail.taxandcommerce.com 2->36 38 ip-api.com 2->38 40 2 other IPs or domains 2->40 50 Found malware configuration 2->50 52 Antivirus detection for URL or domain 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 8 other signatures 2->56 8 Ziraat Bankasi Swift Mesaji.pdf.exe 5 32 2->8         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\Delebrns.Und, ASCII 8->24 dropped 26 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->26 dropped 58 Suspicious powershell command line found 8->58 12 powershell.exe 20 8->12         started        signatures6 process7 file8 28 C:\Users\user\AppData\Local\...\Kickstand.exe, PE32 12->28 dropped 60 Obfuscated command line found 12->60 62 Writes to foreign memory regions 12->62 64 Powershell drops PE file 12->64 16 Kickstand.exe 15 8 12->16         started        20 conhost.exe 12->20         started        22 cmd.exe 1 12->22         started        signatures9 process10 dnsIp11 30 mail.taxandcommerce.com 65.99.252.33, 587 AS-TIERP-36024US United States 16->30 32 ip-api.com 208.95.112.1, 49711, 80 TUT-ASUS United States 16->32 34 2 other IPs or domains 16->34 42 Multi AV Scanner detection for dropped file 16->42 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->44 46 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 16->46 48 6 other signatures 16->48 signatures12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-02-28 17:24:40 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
18 of 37 (48.65%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mm5buyabgm7mkxpiivp7oxvezqbbe6dviztdqb4toel4tqgizkhq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/240304-qzrhvsbe81/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Loads dropped DLL
Unpacked files
SH256 hash:
0096ae873c75f4e4d802dc97eec9893acc0749a7346e63f25a8d52ba8e11c527
MD5 hash:
35200be9cf105f3defe2ae0ee44cea12
SHA1 hash:
3f4a09eeb477d3f048cdfb848b95aa39b20d89dc
Link:
https://www.unpac.me/results/5d90dc3a-4275-4c4f-885b-8f6dd2005952/
SH256 hash:
c47679897928a8a1d8017a6ad9464c57e022c1e48f308d2a5c56a854a68be650
MD5 hash:
e5863272ea25171fda0749fcd923b8bf
SHA1 hash:
1879c9c33e7e3151bf677cef3e2db33f43850c08
Link:
https://www.unpac.me/results/5d90dc3a-4275-4c4f-885b-8f6dd2005952/
SH256 hash:
633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f
MD5 hash:
337d7a3acc48f89b9a8a7f68fafc74a8
SHA1 hash:
0d88c4dabcfdcc35a5defb43689932f34f07c064
Link:
https://www.unpac.me/results/5d90dc3a-4275-4c4f-885b-8f6dd2005952/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/633a1a600133/report/overview.html
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/633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f

File information

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

Malspam

GuLoader

Executable exe 633a1a6001333ec55de8455ff75ea4cc0212787546663807937117c9c0c8ca8f

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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