MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
SHA3-384 hash: f6be8f064617512583cb64d46111e8c600b4181e80318dc2ac4c47e1eeffbc080c43ea3411af7e1fa61b96422c57e154
SHA1 hash: 9049c7b33c15b6514553994bbec90751faee9e67
MD5 hash: aaaba57d5dbcc2cf251a54fd00fbd4b8
humanhash: yankee-north-carbon-mango
File name:a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
Download: download sample
Signature GuLoader
Create hunting rule
File size:616'104 bytes
First seen:2025-05-09 14:28:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 573bb7b41bc641bd95c0f5eec13c233b (23 x GuLoader, 13 x VIPKeylogger, 9 x XWorm)
ssdeep 12288:LTA5fLbD8VLfZ7+NKtzwqTxGxmNGwrMKo4r0LL9sXAWhHO:LTA5fLbDo76Y4YfrRx0LD
TLSH T12BD42342E791CCF8E5B24B311D317977AB56BE1909D02E9A4F283D007833B92953FA1E
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 155575b14141c4c4 (2 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Andrikkers
Issuer:Andrikkers
Algorithm:sha256WithRSAEncryption
Valid from:2024-12-31T08:44:22Z
Valid to:2025-12-31T08:44:22Z
Serial number: 16dbc756d1f97feb11f982938f44c68a7c93bb76
Thumbprint Algorithm:SHA256
Thumbprint: 12a7695e4580c42629626f8200cf8852331ec7b291e75f1bcc26df1651c88cc3
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
321
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
Verdict:
Malicious activity
Analysis date:
2025-05-10 00:33:16 UTC
Tags:
auto-reg rat remcos upx
Link:
https://app.any.run/tasks/d74917bd-bda7-4862-b79e-c71fc8a9a994

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=681e1289e16384d6a7034e50
Tags:
injector uloader virus nsis
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a 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 blackhole installer microsoft_visual_cc overlay packed signed
Link:
https://www.filescan.io/uploads/681e113d0b64e174c41fc877/reports/8865d13a-120a-419c-9a49-ef9d4a9f5163/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/74d8ee83-1e6c-45fd-9b05-3a535d5c51dd
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1685539
Signature
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Found malware configuration
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Remcos
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-04-26 04:54:55 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ut3654nbptsyrxvklpqn3hw2zarr3rovsnlwzgp7avmwfzh3ef6q._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader persistence upx
Link:
https://tria.ge/reports/250509-rtqj2sfp6v/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
UPX packed file
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/34f63386-a906-448d-9546-7908ad2abf72
Unpacked files
SH256 hash:
a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d
MD5 hash:
aaaba57d5dbcc2cf251a54fd00fbd4b8
SHA1 hash:
9049c7b33c15b6514553994bbec90751faee9e67
Link:
https://www.unpac.me/results/b82ccc71-fb03-4836-958d-b72746420e84/
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/b82ccc71-fb03-4836-958d-b72746420e84/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4f7eef1a17c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a4f7eef1a17ce588deaa5be0dd9edac8231dc5d593576c99ff055962e4fb217d

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
Create hunting rule
Author:albertzsigovits
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
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
IDTitleSeverity
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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