MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8817cf171c32ecf0847aa228990586f82b8bf74eff24ef42227164bf1acae399. 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: | 8817cf171c32ecf0847aa228990586f82b8bf74eff24ef42227164bf1acae399 |
|---|---|
| SHA3-384 hash: | bf92fa8f08dcb5e7933df7a728cc64ef795de3a5aebacf67778d33d2118c901c5b83ac91b1c67033d29ea8cd9fd5c626 |
| SHA1 hash: | 8d2a2f92d8641672d6d2a447448b4127acb6551b |
| MD5 hash: | 01f68e02af2a9314bf20a84f722cd993 |
| humanhash: | lake-music-kansas-carpet |
| File name: | 8817cf171c32ecf0847aa228990586f82b8bf74eff24ef42227164bf1acae399 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 646'552 bytes |
| First seen: | 2025-08-12 13:53:46 UTC |
| Last seen: | 2026-05-20 17:55:13 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | e2a592076b17ef8bfb48b7e03965a3fc (419 x GuLoader, 63 x RemcosRAT, 52 x AgentTesla) |
| ssdeep | 12288:8M3WjKEVst+oCPFrC8PL82bWD6bRrdMm/PMl51vY+rn8wzZVD725FEZowv:lG5VC+oCNJPw2bJwmnMj1z8sjD725Fwv |
| TLSH | T1D6D4CE07E890751FD618CAB62D0450C78A9F4F16CCEA01BEBBD12BD5D429FC2B9842DB |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 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) |
| Magika | pebin |
| dhash icon | 93d4e0e08082a8e0 (1 x GuLoader) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Pappescent |
|---|---|
| Issuer: | Pappescent |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2024-11-27T08:46:21Z |
| Valid to: | 2026-03-02T08:46:21Z |
| Serial number: | 7b3b9a9f3e5de0bd5e5a1d4a44df1ea65f81b6b2 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 795b2a3e627aa3201bbf70942c9acc8a8e7838061509fa8efa0a25536ce00ff3 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
61
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
259324696-042304-sanlccjavap0004-4708.tar
Verdict:
Malicious activity
Analysis date:
2025-07-18 22:44:52 UTC
Tags:
arch-exec evasion
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
Tags:
injection uloader virus
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer microsoft_visual_cc overlay signed
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
Score:
95%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GULoader
Status:
Malicious
First seen:
2025-07-18 11:05:37 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
21 of 36 (58.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
vipkeylogger
Score:
10/10
Tags:
family:guloader family:vipkeylogger collection discovery downloader keylogger spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
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
Guloader family
Guloader,Cloudeye
VIPKeylogger
Vipkeylogger family
Malware Config
C2 Extraction:
https://api.telegram.org/bot8187330810:AAHUf-v5at5cs9bqkCgliqoZu8N78dp2uoI/sendMessage?chat_id=7618581100
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
8817cf171c32ecf0847aa228990586f82b8bf74eff24ef42227164bf1acae399
MD5 hash:
01f68e02af2a9314bf20a84f722cd993
SHA1 hash:
8d2a2f92d8641672d6d2a447448b4127acb6551b
SH256 hash:
9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed
MD5 hash:
fc3772787eb239ef4d0399680dcc4343
SHA1 hash:
db2fa99ec967178cd8057a14a428a8439a961a73
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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 |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::SetFileSecurityW |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteW SHELL32.dll::SHFileOperationW SHELL32.dll::SHGetFileInfoW |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDiskFreeSpaceW KERNEL32.dll::GetCommandLineW |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileW KERNEL32.dll::MoveFileExW |
| WIN_BASE_USER_API | Retrieves Account Information | ADVAPI32.dll::LookupPrivilegeValueW |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuW USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::OpenClipboard USER32.dll::PeekMessageW USER32.dll::CreateWindowExW |
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