MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43e782d8c5b308ecc64aa65004d0165ff2ef3a0be3c659a2a02e1a4b5777094a. 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



AgentTesla


Vendor detections: 13


Intelligence 13 IOCs YARA 4 File information Comments

SHA256 hash: 43e782d8c5b308ecc64aa65004d0165ff2ef3a0be3c659a2a02e1a4b5777094a
SHA3-384 hash: cd51957d769d99b157179cdca9a20ac1a02eee6f8256d1e7c4d6ab36251de39faf6e8f7657b0437fc5559ae66e137f2a
SHA1 hash: 1666811709b9905e72f7065703bb176b149525e8
MD5 hash: 529a4e8314130d9693118be4e2ed9c2a
humanhash: juliet-uniform-west-romeo
File name:Documentos.xml.exe
Download: download sample
Signature AgentTesla
File size:381'584 bytes
First seen:2026-07-29 15:49:01 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 573bb7b41bc641bd95c0f5eec13c233b (54 x GuLoader, 31 x RemcosRAT, 25 x AgentTesla)
ssdeep 6144:D+MvoJEiU4oWwomiaZvNOTTGi0PhFKdLhyTCdijLVHE+A:D+e4oWwomiaXO+rLWdijqR
TLSH T10184CF9AFF70E8D2C93C0A704B7789250636EF940A51472B2A54F36F7E726029DA7F41
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 8a9af4ecd8d871b2 (2 x AgentTesla)
Reporter lowmal3
Tags:AgentTesla exe signed

Code Signing Certificate

Organisation:Heterogangliate
Issuer:Heterogangliate
Algorithm:sha256WithRSAEncryption
Valid from:2026-07-26T02:22:21Z
Valid to:2027-07-26T02:22:21Z
Serial number: 685a4adcc2b5f261f676915be1b267e5f89ad72d
Thumbprint Algorithm:SHA256
Thumbprint: 781aa90ed0c875af488983c22f8c3191514a305c104d2bb13c9d5b81d996fe52
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence


File Origin
# of uploads :
1
# of downloads :
193
Origin country :
DE DE
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Searching for the window
Delayed reading of the file
Creating a file in the %temp% subdirectories
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 installer installer masquerade microsoft_visual_cc nsis signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-29T10:46:00Z UTC
Last seen:
2026-07-31T14:28:00Z UTC
Hits:
~1000
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
AI detected suspicious PE / MSI digital signature
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted 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)
Sample has a suspicious name (potential lure to open the executable)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1949647 Sample: Documentos.xml.exe Startdate: 29/07/2026 Architecture: WINDOWS Score: 100 24 ip-api.com 2->24 28 Suricata IDS alerts for network traffic 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected GuLoader 2->32 34 5 other signatures 2->34 8 Documentos.xml.exe 27 2->8         started        signatures3 process4 file5 20 C:\Users\user\AppData\...\kommisions.bre, COM 8->20 dropped 22 C:\Users\user\AppData\Local\...\System.dll, PE32 8->22 dropped 36 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->36 38 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->38 40 Tries to detect virtualization through RDTSC time measurements 8->40 42 4 other signatures 8->42 12 Documentos.xml.exe 15 8 8->12         started        16 Documentos.xml.exe 8->16         started        signatures6 process7 dnsIp8 26 ip-api.com 208.95.112.1, 49868, 80 TUT-AS-TotalUptimeTechnologiesLLCUS United States 12->26 44 Tries to steal Mail credentials (via file / registry access) 12->44 46 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->46 48 Tries to harvest and steal browser information (history, passwords, etc) 12->48 50 Found direct / indirect Syscall (likely to bypass EDR) 12->50 18 Documentos.xml.exe 12->18         started        signatures9 process10
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Malware.Heuristic
Status:
Malicious
First seen:
2026-07-29 14:40:44 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
15 of 24 (62.50%)
Threat level:
  2/5
Result
Malware family:
guloader
Score:
  10/10
Tags:
family:agenttesla family:guloader collection discovery downloader keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Family: AgentTesla
Family: Guloader,Cloudeye
Unpacked files
SH256 hash:
43e782d8c5b308ecc64aa65004d0165ff2ef3a0be3c659a2a02e1a4b5777094a
MD5 hash:
529a4e8314130d9693118be4e2ed9c2a
SHA1 hash:
1666811709b9905e72f7065703bb176b149525e8
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Please note that we are no longer able to provide a coverage score for Virus Total.

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_NSIS_Nullsoft_Installer
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:NSIS
Author:kevoreilly
Description:NSIS Integrity Check function
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:VECT_Ransomware
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information


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

Comments