MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 caf44a2d4d469a2ec1b8acf1df9e5dabb3561bc7d580ea0e83a3523bde454bf8. 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: 13
| SHA256 hash: | caf44a2d4d469a2ec1b8acf1df9e5dabb3561bc7d580ea0e83a3523bde454bf8 |
|---|---|
| SHA3-384 hash: | b5bb1a8a38113023ef53466ef4fb1cc64e53c7fea32e3745eab183a9eafd6d3e2102742d2137107285565f9f7fcc79a2 |
| SHA1 hash: | 1178819f033897aa05661ceadf24149e0f56ec19 |
| MD5 hash: | 47e5526a49468b5f09a308bdbcc14429 |
| humanhash: | undress-moon-mexico-idaho |
| File name: | Staffreport.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 695'072 bytes |
| First seen: | 2025-08-11 22:53:04 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki) |
| ssdeep | 12288:nNbPw+zB8c70DtiqjkyZMGFPxiBrzz64dCA1EVB22e/LVo:nN8+zB8c4D0OMmcBHu4YA1EVBC/5o |
| Threatray | 78 similar samples on MalwareBazaar |
| TLSH | T1C8E4F0197214A077C59406723AD6823FEA647ECCA6C6030723B8B73B79F154DFA057BA |
| 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 | 31f0acdae6f07032 (2 x RemcosRAT, 2 x GuLoader) |
| Reporter |  nickkuechel |
| Tags: | exe GuLoader remcos signed |
Code Signing Certificate
| Organisation: | Sadismen |
|---|---|
| Issuer: | Sadismen |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-04-21T05:29:06Z |
| Valid to: | 2026-07-25T05:29:06Z |
| Serial number: | 0dc4e778a16f7e4bc4d96039de834e920a9eb0bc |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | ba695f8d3c2d86c6330e0c2e6cd8d650431aca799495614925f4fa7c960c28fd |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
593
Origin country :
USVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1206fea987b23b3495a94856014d7969ef2b71be69dab5d29608bd3aadaa4189.zip
Verdict:
Suspicious activity
Analysis date:
2025-08-06 11:18:03 UTC
Tags:
arch-exec
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Clean
Score:
89.3%
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
adaptive-context installer microsoft_visual_cc obfuscated overlay signed
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Unknown
Score:
96%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-08-06 04:58:14 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
20 of 36 (55.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 68 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos collection discovery persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.85.144:2@404
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
caf44a2d4d469a2ec1b8acf1df9e5dabb3561bc7d580ea0e83a3523bde454bf8
MD5 hash:
47e5526a49468b5f09a308bdbcc14429
SHA1 hash:
1178819f033897aa05661ceadf24149e0f56ec19
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
Malware family:
GuLoader
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_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: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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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