MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08
SHA3-384 hash: df7c2f2b35327ba5daa42f38a9524ffd6a9ef929ff65b4eedd468beab138a3048d4199fb1f9dc11850e3137abbd31b93
SHA1 hash: 9ab047b98a10cc7baa60b3aad0a89f839ce9306b
MD5 hash: 94c3a3cd6e710bef2a0956fe49c3ad80
humanhash: glucose-violet-mango-utah
File name:ZAMOWIEN.EXE
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'027'840 bytes
First seen:2024-10-02 09:22:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c05041e01f84e1ccca9c4451f3b6a383 (141 x RedLineStealer, 101 x GuLoader, 64 x DiamondFox)
ssdeep 12288:Ygvb0swaNk3/U42NK6uX3AeJ2gzCtfnUDEkyWK4hHzJ+wX6okMOeRPuGcX6:YgD0Xah46U3VhcfUDyOl+wXlkMOMcX6
TLSH T15D25AEC03DB84EC2DE37C7FC04956961CF3B7E669D40A04911E03AE72EB95A35839E5A
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)
Magika pebin
File icon (PE):PE icon
dhash icon ccccc1b288e87192 (2 x GuLoader, 1 x AgentTesla)
Reporter Anonymous
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Unsinuous marid Afbagningernes
Issuer:Unsinuous marid Afbagningernes
Algorithm:sha256WithRSAEncryption
Valid from:2024-03-02T07:17:19Z
Valid to:2027-03-02T07:17:19Z
Serial number: 2ce10e960656346c0976f47bffa5ae34491e452a
Thumbprint Algorithm:SHA256
Thumbprint: 57d36d648521fe7013e7c685995e0c3afb9180a17b57db0718a753b10b555679
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
400
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
ZAMOWIEN.EXE
Verdict:
Malicious activity
Analysis date:
2024-10-02 09:30:18 UTC
Tags:
guloader loader
Link:
https://app.any.run/tasks/c0f09b38-32aa-4bc9-aaf0-d1f9134804d1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Loader.1575.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66fd10be0fdf888709799743
Tags:
Powershell Gumen
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Verdict:
Unknown
Threat level:
  10/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/66fd10be168559661d51a039/reports/61be2e3f-2227-430e-b2de-cd6dc62c9e5b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08
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/f043644a-f898-4955-9808-9b95d2a5d28e
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1523999
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Found suspicious powershell code related to unpacking or dynamic code loading
Loading BitLocker PowerShell Module
Sample uses process hollowing technique
Suspicious powershell command line found
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1523999 Sample: ZAMOWIEN.EXE.exe Startdate: 02/10/2024 Architecture: WINDOWS Score: 76 24 Antivirus / Scanner detection for submitted sample 2->24 26 Yara detected GuLoader 2->26 28 AI detected suspicious sample 2->28 7 ZAMOWIEN.EXE.exe 2 23 2->7         started        process3 file4 22 C:\Users\user\AppData\Local\...\Marmaduke.Ove, ASCII 7->22 dropped 30 Suspicious powershell command line found 7->30 11 powershell.exe 26 7->11         started        signatures5 process6 signatures7 32 Sample uses process hollowing technique 11->32 34 Found suspicious powershell code related to unpacking or dynamic code loading 11->34 36 Loading BitLocker PowerShell Module 11->36 14 SIHClient.exe 6 11->14         started        16 conhost.exe 11->16         started        18 msiexec.exe 11->18         started        20 36 other processes 11->20 process8
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-10-02 08:40:38 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kuiy6mjjkien3mvd47yyunaak3dzduzy3a3vbagn6ymmfpabxuea._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/241002-lbw18aydnl/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/694000e8-a92a-4ac8-8b0b-dc0289369d60
Unpacked files
SH256 hash:
55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08
MD5 hash:
94c3a3cd6e710bef2a0956fe49c3ad80
SHA1 hash:
9ab047b98a10cc7baa60b3aad0a89f839ce9306b
Link:
https://www.unpac.me/results/c5abfe55-2835-4121-b09c-1873676be952/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/55118f312952/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/55118f31295208ddb2a3e7f18a340056c791d338d8375080cdf618c2bc01bd08

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

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
ADVAPI32.dll::SetFileSecurityW
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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