MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3bb103bfa52137624c0932b092360c74b5094502a1dbb7b1ea4553fe898b22f7. 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: 14
| SHA256 hash: | 3bb103bfa52137624c0932b092360c74b5094502a1dbb7b1ea4553fe898b22f7 |
|---|---|
| SHA3-384 hash: | 8d73222ad12a15dcde2fdaddcc0bb3c4e36db88e596cb376ca783b5c5d29fddef07cdd0ba97ab5957eebe5744666e549 |
| SHA1 hash: | f22eb53bf088a2b5bb17abcc71481227ecae01ab |
| MD5 hash: | 0b90c86d6d1c4807f8189564dab35d2e |
| humanhash: | uniform-bulldog-may-stream |
| File name: | 177XHEHEN31592A(BLRider)_20250519102019.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 535'725 bytes |
| First seen: | 2025-07-25 06:59:32 UTC |
| Last seen: | 2026-05-20 17:33:45 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 4ea4df5d94204fc550be1874e1b77ea7 (254 x GuLoader, 32 x RemcosRAT, 26 x VIPKeylogger) |
| ssdeep | 12288:fgJGSH8e9zdElLucWKQaVWnt/qZdnbOqVtm2ZAdg91:XSc4zWlyc138t/qZRCqVI2sgr |
| Threatray | 4'394 similar samples on MalwareBazaar |
| TLSH | T167B401107502E455CC3A087198EB817156ADFE29D8B74AB33ACDB71EEA368D2472F316 |
| 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 | 5ce4b4dcf6313cb0 (3 x RemcosRAT, 2 x GuLoader) |
| Reporter |  AntiSkidding |
| Tags: | exe GuLoader remcos |
Intelligence
File Origin
# of uploads :
2
# of downloads :
674
Origin country :
CHVendor Threat Intelligence
Malware family:
remcos
ID:
1
File name:
177XHEHEN31592A(BLRider)_20250519102019.exe
Verdict:
Malicious activity
Analysis date:
2025-07-25 06:36:47 UTC
Tags:
rat remcos
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
90.2%
Tags:
injection uloader virus
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Sending a custom TCP request
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-debug blackhole installer microsoft_visual_cc overlay overlay
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Verdict:
Suspicious
Score:
97%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PE (Portable Executable) Win 32 Exe x86
Verdict:
Malicious
Threat:
Trojan.NSIS.GuLoader
Threat name:
Win32.Trojan.Guloader
Status:
Suspicious
First seen:
2025-07-24 15:32:24 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
11 of 24 (45.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 4'384 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:new collection discovery persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
denagautr7jkoms1.duckdns.org:18760
denagautr7jkoms1.duckdns.org:18761
denagautr7jkoms2.duckdns.org:18760
denagautr7jkoms3.duckdns.org:18760
denagautr7jkoms4.duckdns.org:18760
denagautr7jkoms5.duckdns.org:18760
denagautr7jkoms1.duckdns.org:18761
denagautr7jkoms2.duckdns.org:18760
denagautr7jkoms3.duckdns.org:18760
denagautr7jkoms4.duckdns.org:18760
denagautr7jkoms5.duckdns.org:18760
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
3bb103bfa52137624c0932b092360c74b5094502a1dbb7b1ea4553fe898b22f7
MD5 hash:
0b90c86d6d1c4807f8189564dab35d2e
SHA1 hash:
f22eb53bf088a2b5bb17abcc71481227ecae01ab
SH256 hash:
2e226715419a5882e2e14278940ee8ef0aa648a3ef7af5b3dc252674111962bc
MD5 hash:
a4dd044bcd94e9b3370ccf095b31f896
SHA1 hash:
17c78201323ab2095bc53184aa8267c9187d5173
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.79
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: | 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_AUTHENTICODE | Missing Authenticode | high |
| 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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