MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51. 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


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
SHA3-384 hash: 0a3d2d011b23c5b36d9301c4d1b072d3d4830704a7de586ea4a7bd2f3b30c3093cc845a8c3d2a5e9ff0eeda804c219bc
SHA1 hash: e201c843b39538d0f42e3ac3490f2a0038d16493
MD5 hash: 1dcb58d1e0db0fe9edfa71c89f09b1d8
humanhash: uniform-beer-hamper-winner
File name:98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
Download: download sample
Signature GuLoader
Create hunting rule
File size:644'568 bytes
First seen:2025-05-09 13:12:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 573bb7b41bc641bd95c0f5eec13c233b (27 x GuLoader, 15 x VIPKeylogger, 11 x RemcosRAT)
ssdeep 12288:gTAHY+hwvIGqltvoCKCpaD5Sa7niMtZMobimoLzNK4nr0LL9sXAWhHY:gTAHY+eWb2EaGOMucLpK00Lz
TLSH T1ACD42351D694C9D7E10217300C31FA2B1AE36E7864F45E5E6F2E36A53833387907BA1E
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 61791b731131c54d (1 x GuLoader)
Reporter adrian__luca
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Klubfolk
Issuer:Klubfolk
Algorithm:sha256WithRSAEncryption
Valid from:2024-07-12T04:33:05Z
Valid to:2025-07-12T04:33:05Z
Serial number: 33887e88845e57922ee2a21457f0dc798b9a392e
Thumbprint Algorithm:SHA256
Thumbprint: 0b56cf57d723d5e9948364b6936edf20d9d6c820c2fe630698ebd487b42d12a2
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
323
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
Verdict:
Malicious activity
Analysis date:
2025-05-09 18:19:00 UTC
Tags:
auto-reg rat remcos
Link:
https://app.any.run/tasks/bb46b033-3947-4af1-81d1-9cea570ead43

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.15900.23266.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=681e01264a59e5a2ce034bca
Tags:
injection uloader virus nsis
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context blackhole guloader installer microsoft_visual_cc overlay packed signed
Link:
https://www.filescan.io/uploads/681dff70c7418694c8a803cf/reports/f69d4950-7f3a-488d-a8fb-5e631d5f132c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/68384fb7-2385-44ce-84e8-4886b558b86a
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1686398
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
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-04-20 09:19:27 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=td7lpzoszx7tgupqx5d5fx5x6cr7puhwg5rgufj4uyqwyosudziq._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader persistence upx
Link:
https://tria.ge/reports/250509-qf89kawkt9/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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/1b8a3c66-ed15-4a9a-b05d-e4757a6f02c0
Unpacked files
SH256 hash:
98feb7e5d2cdff3351f0bf47d2dfb7f0a3f7d0f637626a153ca6216c3a541e51
MD5 hash:
1dcb58d1e0db0fe9edfa71c89f09b1d8
SHA1 hash:
e201c843b39538d0f42e3ac3490f2a0038d16493
Link:
https://www.unpac.me/results/21d0ceab-abad-44b2-a1b6-86d7c2d56114/
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/21d0ceab-abad-44b2-a1b6-86d7c2d56114/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/98feb7e5d2cd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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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