MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d
SHA3-384 hash: 72396803c228d377fb1bc0ddfaa07843862bf95058cde1d15faf939e5c4f4ae9305ffc4b7f5d72f64ce5b9a30ec1a70e
SHA1 hash: 57386d4b07b978892afce671e674581e300c4593
MD5 hash: bbde90d159fa822e342aab15eb33b839
humanhash: shade-sweet-yankee-quebec
File name:PO23330019283713022025.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:684'198 bytes
First seen:2025-02-13 07:05:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7192d3773f389d45ebac3cc67d054a8a (37 x GuLoader, 8 x RemcosRAT, 7 x VIPKeylogger)
ssdeep 12288:hDG4hAuAs9Mp4wSjEL0K5dmMiP1FuCdhq2PtqBA3O:t2nsGej65P2F9Vd+
Threatray 2'075 similar samples on MalwareBazaar
TLSH T102E4E02326B2DC12E38053744159E37DCE52BE8A2571C23366F5AD9F7629F327C583A2
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 abuse_ch
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
515
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO23330019283713022025.exe
Verdict:
Malicious activity
Analysis date:
2025-02-13 07:11:01 UTC
Tags:
evasion snake keylogger stealer
Link:
https://app.any.run/tasks/636758f7-993e-47e8-a1fa-30b361fbfae0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67ad99e828ab76d43a5aa9aa
Tags:
injection virus
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
blackhole installer microsoft_visual_cc obfuscated overlay packed packer_detected phishing
Link:
https://www.filescan.io/uploads/67ad99e0991985e0a957fd0c/reports/75209b8e-092f-413d-889f-d9a5920c050c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/5d0d8eda-3c12-45c3-bfec-d28fff46c89b
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1614029
Signature
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-02-13 04:03:00 UTC
File Type:
PE (Exe)
Extracted files:
15
AV detection:
16 of 37 (43.24%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gb5rhqxyaaxirlycpuwfjgjw2cfepupdx6uwc5gqww3my5e7pq6q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
2481fd6c5d237aea74644564492f05998b436ab51fb2730310f4049a53ba5459
GuLoader
448234787d7924280fedbb49f5702f0483ef8046394f8adc14006f3f8b6793b2
GuLoader
67012c9555804fbfe82f17ee6d7d09196ed356053e2e778f49a998a4b718d6a6
GuLoader
691b3c73fa3301b9c36de80df0e7aa9d551a87ccc77a04b93786d6f1f5a41969
GuLoader
9707c1faa4b7191af96f2879472c6bb368eef29b80d917dc9dc197f92ae86b8f
GuLoader
a81759cc686cbbf9946cc49e6bf06907532e57d9ff167e061e3993fb0c0fd1b7
GuLoader
a8ae16bfa9525efdd82a2bcaf9b5d421761f6ceaeca12f05d8bbbe085eecd28a
GuLoader
ab2036dc90a503a003ed28e17ed2cf24001848be05580b6246656f88abe01c86
GuLoader
ebd9140ae75dcbe323f8e35f02e9e700bc37f65354cddb345a61f25b45bdaa5d
GuLoader
error
GuLoader
f93a630eab832224dee5372049c7e7cfab3fc0bd78d3eb9b13f9b384e4b0f81f
GuLoader
+ 2'065 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader adware collection discovery downloader persistence privilege_escalation spyware stealer
Link:
https://tria.ge/reports/250213-hw4p1svkfk/
Behaviour
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Uses Task Scheduler COM API
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Drops file in Program Files directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Accesses Microsoft Outlook profiles
Checks installed software on the system
Installs/modifies Browser Helper Object
Looks up external IP address via web service
Event Triggered Execution: Component Object Model Hijacking
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Boot or Logon Autostart Execution: Active Setup
Downloads MZ/PE file
Guloader family
Guloader,Cloudeye
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/cb85a95a-754e-47e4-8558-ba67de028597
Unpacked files
SH256 hash:
307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d
MD5 hash:
bbde90d159fa822e342aab15eb33b839
SHA1 hash:
57386d4b07b978892afce671e674581e300c4593
Link:
https://www.unpac.me/results/9960bf4c-9826-4e6b-862b-1906ec5419ff/
SH256 hash:
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
MD5 hash:
ee260c45e97b62a5e42f17460d406068
SHA1 hash:
df35f6300a03c4d3d3bd69752574426296b78695
Link:
https://www.unpac.me/results/9960bf4c-9826-4e6b-862b-1906ec5419ff/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/307b13c2f800/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.79
Link:
https://yomi.yoroi.company/submissions/307b13c2f8002e88af027d2c549936d08a47d1e3bfa96174d0b5b6cc749f7c3d

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: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_AUTHENTICODEMissing Authenticodehigh
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
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteW
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::LoadLibraryW
KERNEL32.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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