MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 88c876c6e878bb780ca462470ae91e96cb2102d2b74076c235535e516055afe8. 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: | 88c876c6e878bb780ca462470ae91e96cb2102d2b74076c235535e516055afe8 |
|---|---|
| SHA3-384 hash: | 2c326fa4092997285f9d898a69f648ced32bf322643ec8b84ee007ba6287e0c85e2a9ca8e961964b583d381e0eee5281 |
| SHA1 hash: | a39220f7342acc0fbb8f349cc5ebea1ae5b8a629 |
| MD5 hash: | 33afc7382d0429ddfa7befa3e26a6ccd |
| humanhash: | oklahoma-undress-lima-bulldog |
| File name: | 88c876c6e878bb780ca462470ae91e96cb2102d2b74076c235535e516055afe8 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 687'560 bytes |
| First seen: | 2025-05-09 14:19:09 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 9a16e282eba7cc710070c0586c947693 (26 x GuLoader, 11 x VIPKeylogger, 7 x RemcosRAT) |
| ssdeep | 12288:2JPHXAcxrpdbywsMoudWLTPwdEmTC7OYxo9ErGwTWR5cgLnO7cpjDzBb:2JPhFPbyLMouYLlGC7OYVT4SgDkQjDzt |
| TLSH | T1EDE4239AA7F0D007E56D06B2C80057FAE4D06E40DDB6A3871B56BF65FCFAE42DA120C5 |
| 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: | Corticoline |
|---|---|
| Issuer: | Corticoline |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-04-01T00:10:42Z |
| Valid to: | 2026-04-01T00:10:42Z |
| Serial number: | 2bd6e2fccc20ee77cedca2569682b43cd7aa36ac |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | e6d230e48ec52ecceccc04cc2b6307c769ad7720f0b756b0a90b481dae098f41 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
325
Origin country :
HUVendor Threat Intelligence
Malware family:
guloader
ID:
1
File name:
88c876c6e878bb780ca462470ae91e96cb2102d2b74076c235535e516055afe8
Verdict:
Malicious activity
Analysis date:
2025-05-09 23:56:45 UTC
Tags:
guloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
93.3%
Tags:
injection uloader virus nsis
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context blackhole guloader installer microsoft_visual_cc overlay overlay packed packed packer_detected signed
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Behaviour
Behavior Graph:
n/a
Score:
98%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-04-25 01:46:08 UTC
File Type:
PE (Exe)
Extracted files:
12
AV detection:
19 of 24 (79.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Malicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Unpacked files
SH256 hash:
88c876c6e878bb780ca462470ae91e96cb2102d2b74076c235535e516055afe8
MD5 hash:
33afc7382d0429ddfa7befa3e26a6ccd
SHA1 hash:
a39220f7342acc0fbb8f349cc5ebea1ae5b8a629
SH256 hash:
a44ca08afb3f6bafd76aa35c259f3d599fe34f6f49ea5118626c1c1a540b0f03
MD5 hash:
81e268e27dbbcadbf116b5a9402195ab
SHA1 hash:
bd2b701b2e5e279786e179bceee2dc132a2afc37
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| 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.
No further information available
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 |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteExA SHELL32.dll::SHFileOperationA SHELL32.dll::SHGetFileInfoA |
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessA ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::LoadLibraryExA KERNEL32.dll::GetDiskFreeSpaceA KERNEL32.dll::GetCommandLineA |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileA KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileA KERNEL32.dll::DeleteFileA KERNEL32.dll::MoveFileA KERNEL32.dll::MoveFileExA |
| WIN_BASE_USER_API | Retrieves Account Information | ADVAPI32.dll::LookupPrivilegeValueA |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExA ADVAPI32.dll::RegDeleteKeyA ADVAPI32.dll::RegOpenKeyExA ADVAPI32.dll::RegQueryValueExA ADVAPI32.dll::RegSetValueExA |
| WIN_USER_API | Performs GUI Actions | USER32.dll::AppendMenuA USER32.dll::EmptyClipboard USER32.dll::FindWindowExA USER32.dll::OpenClipboard USER32.dll::PeekMessageA USER32.dll::CreateWindowExA |
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