MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b9dccdd47941cee82eadbe252521ecbe0756cba76b1fea9dab055cef6298e8bb. 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: 12
| SHA256 hash: | b9dccdd47941cee82eadbe252521ecbe0756cba76b1fea9dab055cef6298e8bb |
|---|---|
| SHA3-384 hash: | 4d0d0ad06874fb8852249c1b84f2fd10937119380ee609accbeedfc9105489cc810b2a23d435ea3aaf23f4ad41d1e1f2 |
| SHA1 hash: | 9400df65bd60fe86e269ca0344645f7a1e0fbb8b |
| MD5 hash: | b8873d268f0b8bdcae764bcd3289bd54 |
| humanhash: | illinois-foxtrot-emma-purple |
| File name: | b9dccdd47941cee82eadbe252521ecbe0756cba76b1fea9dab055cef6298e8bb |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 726'232 bytes |
| First seen: | 2025-08-12 14:56:38 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 84062c623770f0d888e4ca58451aa7ad (10 x GuLoader, 1 x Formbook, 1 x RemcosRAT) |
| ssdeep | 12288:NiFZYZsY9mtsX+/pMC7Qui7CUBWquwTh3t4w38Py0UHEr3KOt2Va:sFZltG+BfRWRFxt4wjGKO0Va |
| Threatray | 443 similar samples on MalwareBazaar |
| TLSH | T19EF40230765AF0CDDF0E953C075EF33A1ABAECE566075113AF90BE6B3A752838806495 |
| 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 |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Draconcopedes |
|---|---|
| Issuer: | Draconcopedes |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-03-09T04:58:08Z |
| Valid to: | 2026-06-12T04:58:08Z |
| Serial number: | 70dbadbb4ddac308501745cab212e5d4d7f8d45d |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | dcb5f48f85fe6dfb5b7f1198e1a8ce84317fcb25a3814299987bba646248d624 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
115
Origin country :
HUVendor Threat Intelligence
Malware family:
guloader
ID:
1
File name:
_b9dccdd47941cee82eadbe252521ecbe0756cba76b1fea9dab055cef6298e8bb.exe
Verdict:
Malicious activity
Analysis date:
2025-08-12 20:54:09 UTC
Tags:
auto-reg guloader 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:
99.1%
Tags:
injection uloader virus nsis
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
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Unknown
Score:
95%
Verdict:
Malware
File Type:
PE
Gathering data
Gathering data
Verdict:
Malicious
Threat:
Family.REMCOS
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2025-07-30 09:56:05 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
20 of 38 (52.63%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 433 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader persistence
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
a09f830d3f865cfc3e2d522b72c1df212c98a72fe5a063297e7665641eeb4b93
MD5 hash:
203483959e5d3cb7806f3ca85f4465ed
SHA1 hash:
0047aeab2b252e67efd63607a47655055d27732e
SH256 hash:
edf12a3040cff0d801a86c02313d6605b41d766807f3dcb261754cf01b4e14b9
MD5 hash:
e227391c7ff576135eac4871e78ebe2d
SHA1 hash:
85d4bdbb79bdc47095ca35ed2141b2e64d029218
SH256 hash:
b9dccdd47941cee82eadbe252521ecbe0756cba76b1fea9dab055cef6298e8bb
MD5 hash:
b8873d268f0b8bdcae764bcd3289bd54
SHA1 hash:
9400df65bd60fe86e269ca0344645f7a1e0fbb8b
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.49
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::ShellExecuteExW 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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