MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 037afb04ecb79c472588e6f1b3571abb8903af2fc86f1a8ca2e2acb63c14335b. 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
| SHA256 hash: | 037afb04ecb79c472588e6f1b3571abb8903af2fc86f1a8ca2e2acb63c14335b |
|---|---|
| SHA3-384 hash: | 07d512611ec6a4d1f68f4a3217453db8345db1009b90cab2576b57caa768e86299657100dcde9cad454c25b1f6cde32e |
| SHA1 hash: | 66de55b95e1f19b9c626e35126e9c6dbac8680b0 |
| MD5 hash: | 25727be97a9ff477eaf9f5ede2517d4a |
| humanhash: | apart-zulu-eight-bravo |
| File name: | DATASHEET rfq.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 373'440 bytes |
| First seen: | 2024-05-02 05:46:28 UTC |
| Last seen: | 2024-05-07 06:12:14 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 59a4a44a250c4cf4f2d9de2b3fe5d95f (70 x GuLoader, 13 x AgentTesla, 7 x AZORult) |
| ssdeep | 6144:BcQ9zIITdbWCYoZjp2D210jNiIwUv5PGqJe+kmX/SZB3pH2ybSnYOD69Y7Qh:BwCYsjpu210jNnlGqJolIyUYOu9YW |
| Threatray | 962 similar samples on MalwareBazaar |
| TLSH | T1A28412533B8898A3D3264EB038BFC22597337D1649561B4F33897FBE18F13A54A07659 |
| TrID | 92.7% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133) 3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 1.1% (.EXE) Win64 Executable (generic) (10523/12/4) 0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 0.5% (.EXE) Win16 NE executable (generic) (5038/12/1) |
| File icon (PE): |  |
| dhash icon | f069d4e8e8f0d4b0 (1 x GuLoader) |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Joshia |
|---|---|
| Issuer: | Joshia |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-03-27T05:07:21Z |
| Valid to: | 2027-03-27T05:07:21Z |
| Serial number: | 27a6ae079ac339172da62e008edaeaf63ff5e1f2 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | cba4f1925f5e2cfc047f3e550435c1031eeed6348d0b75bd29ce9dfa14b32e90 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
4
# of downloads :
304
Origin country :
DEVendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
037afb04ecb79c472588e6f1b3571abb8903af2fc86f1a8ca2e2acb63c14335b.exe
Verdict:
Malicious activity
Analysis date:
2024-05-02 05:49:17 UTC
Tags:
discord smtp exfiltration stealer agenttesla
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: New RUN Key Pointing to Suspicious Folder
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected Generic Downloader
Yara detected GuLoader
Yara detected MSILDownloaderGeneric
Behaviour
Behavior Graph:
Score:
98%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2024-05-02 02:28:45 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
15 of 24 (62.50%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
unknown
Similar samples:
+ 952 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:agenttesla family:guloader downloader keylogger persistence spyware stealer trojan
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Reads user/profile data of web browsers
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla
Guloader,Cloudeye
Unpacked files
SH256 hash:
b7ccb923387cc346731471b20fc3df1ead13ec8c2e3147353c71bb0bd59bc8b1
MD5 hash:
6f5257c0b8c0ef4d440f4f4fce85fb1b
SHA1 hash:
b6ac111dfb0d1fc75ad09c56bde7830232395785
SH256 hash:
037afb04ecb79c472588e6f1b3571abb8903af2fc86f1a8ca2e2acb63c14335b
MD5 hash:
25727be97a9ff477eaf9f5ede2517d4a
SHA1 hash:
66de55b95e1f19b9c626e35126e9c6dbac8680b0
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | Detect_SliverFox_String |
|---|---|
| Author: | huoji |
| Description: | Detect files is `SliverFox` malware |
| Rule name: | NSIS_April_2024 |
|---|---|
| Author: | NDA0N |
| Description: | Detects NSIS installers |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | PE_Potentially_Signed_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
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
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
| ID | Title | Severity |
|---|---|---|
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| COM_BASE_API | Can Download & Execute components | ole32.dll::CoCreateInstance |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteA SHELL32.dll::SHFileOperationA SHELL32.dll::SHGetFileInfoA |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessA KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExA KERNEL32.dll::GetDiskFreeSpaceA KERNEL32.dll::GetCommandLineA |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileA KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileA KERNEL32.dll::DeleteFileA KERNEL32.dll::MoveFileA KERNEL32.dll::GetWindowsDirectoryA |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExA ADVAPI32.dll::RegDeleteKeyA ADVAPI32.dll::RegOpenKeyExA ADVAPI32.dll::RegQueryValueExA ADVAPI32.dll::RegSetValueExA |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuA USER32.dll::EmptyClipboard USER32.dll::FindWindowExA USER32.dll::OpenClipboard USER32.dll::PeekMessageA USER32.dll::CreateWindowExA |
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