MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f8ab9380a4f535f1c19ca3e0da58f9dccf058895a2725ef3b10f02567ec68b28. 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: | f8ab9380a4f535f1c19ca3e0da58f9dccf058895a2725ef3b10f02567ec68b28 |
|---|---|
| SHA3-384 hash: | 9d913a8516263d4710f5743d9dba7b741d788191405c001d23ee73a083d80c82aff0aa531f503d73b884b8dfd9ff6bbe |
| SHA1 hash: | 9d5ded1606a1262d947ad897b8404c73f5e02e63 |
| MD5 hash: | 37fe7c16e3e769fa940ca4d4fd0a3ecf |
| humanhash: | stream-river-oxygen-washington |
| File name: | f8ab9380a4f535f1c19ca3e0da58f9dccf058895a2725ef3b10f02567ec68b28 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 608'976 bytes |
| First seen: | 2024-04-04 13:16:50 UTC |
| Last seen: | 2024-04-04 14:20:02 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b34f154ec913d2d2c435cbd644e91687 (542 x GuLoader, 116 x RemcosRAT, 80 x EpsilonStealer) |
| ssdeep | 12288:+hFOB5zdpq8UHgWKKLxouCky5Fx8bg4hbTtX:+hFKtdpq8ggWLdAv5cXFTtX |
| Threatray | 443 similar samples on MalwareBazaar |
| TLSH | T11DD4234AB608D073EDB660B2D4BFDB3AC5F9386853504C3E33447B7EB466112B90EA91 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 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) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Maturate |
|---|---|
| Issuer: | Maturate |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2023-04-05T02:41:50Z |
| Valid to: | 2026-04-04T02:41:50Z |
| Serial number: | 0d5bd551965c066a004beac30c62a80fb71c2672 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | b70541e71e451b1de71e336585ae5fa9db480fdf600f94015e2d2045e7ea0f69 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
346
Origin country :
HUVendor Threat Intelligence
Malware family:
guloader
ID:
1
File name:
f8ab9380a4f535f1c19ca3e0da58f9dccf058895a2725ef3b10f02567ec68b28
Verdict:
Malicious activity
Analysis date:
2024-04-04 13:16:12 UTC
Tags:
guloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:
Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
64 / 100
Signature
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
96%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.Nekark
Status:
Malicious
First seen:
2024-04-04 13:17:08 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
12 of 38 (31.58%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 433 additional samples on MalwareBazaar
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
MD5 hash:
8b3830b9dbf87f84ddd3b26645fed3a0
SHA1 hash:
223bef1f19e644a610a0877d01eadc9e28299509
SH256 hash:
f8ab9380a4f535f1c19ca3e0da58f9dccf058895a2725ef3b10f02567ec68b28
MD5 hash:
37fe7c16e3e769fa940ca4d4fd0a3ecf
SHA1 hash:
9d5ded1606a1262d947ad897b8404c73f5e02e63
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
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: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
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 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::MoveFileExW KERNEL32.dll::MoveFileW |
| 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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