MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 cd533d45b704ab35ca35b9162805abb28710ca25399344812fa9f8598a93b30b. 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: 11
| SHA256 hash: | cd533d45b704ab35ca35b9162805abb28710ca25399344812fa9f8598a93b30b |
|---|---|
| SHA3-384 hash: | e870d8b93d7352cf32f33ee49eda6f3f9f2acec7c3aa35e1956a97472ad6c89ed13be183e1ee855aa1b5cff96df6d31e |
| SHA1 hash: | ec727b3bd73c11995e745ff1668ad69400f97d30 |
| MD5 hash: | 4e1e7a26a6c1115d55293a84f36575c1 |
| humanhash: | snake-indigo-blossom-massachusetts |
| File name: | DHL_M-002567436735845755676678877988975877.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 445'888 bytes |
| First seen: | 2024-04-29 09:51:59 UTC |
| Last seen: | 2024-05-02 06:30:29 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f10e4da994053bf80c20cee985b32e29 (65 x GuLoader, 9 x RemcosRAT, 6 x QuasarRAT) |
| ssdeep | 6144:lxFSmlmkDp54v/qwnQ6pNwhScW/rern/ZPYdnPBzYnBAqJ1tUWz:BtFFSa4ySperRPYvAAqJ19 |
| TLSH | T1C894126E3654C4E9FA4943707B36AB0F25DA7A87228305473B71A7B89B35393CA0F4C5 |
| 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) |
| File icon (PE): |  |
| dhash icon | 8883b69d19c6c3c0 (38 x GuLoader, 6 x RemcosRAT, 6 x VIPKeylogger) |
| Reporter |  threatcat_ch |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | Splinting |
|---|---|
| Issuer: | Splinting |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2023-08-23T01:06:46Z |
| Valid to: | 2026-08-22T01:06:46Z |
| Serial number: | 6e9e63f3c525d16bb622efce6edf45faad6a19e0 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 990c01f598213e013d20445749666b607e4f531c54c01a7f6a413427d4dabd36 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
4
# of downloads :
324
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ЈП Пошта Србије_lossendes6434634682475835.gz
Verdict:
No threats detected
Analysis date:
2024-04-26 11:21:49 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Suspicious
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Launching a process
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
guloader lolbin masquerade overlay packed shell32
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:
Malicious
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Sigma detected: Suspicious Script Execution From Temp Folder
Suspicious powershell command line found
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2024-04-26 08:38:24 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
20 of 38 (52.63%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader downloader persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Guloader,Cloudeye
Unpacked files
SH256 hash:
cd533d45b704ab35ca35b9162805abb28710ca25399344812fa9f8598a93b30b
MD5 hash:
4e1e7a26a6c1115d55293a84f36575c1
SHA1 hash:
ec727b3bd73c11995e745ff1668ad69400f97d30
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | NSIS_April_2024 |
|---|---|
| Author: | NDA0N |
| Description: | Detects NSIS installers |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | PE_Potentially_Signed_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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 |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::SetFileSecurityA |
| 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::MoveFileExA KERNEL32.dll::MoveFileA |
| 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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