MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527. 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


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527
SHA3-384 hash: 05df00b1555b9eef711b5030910118faafedaf90e5038e80f5f94ea4654a8f9455f26f611e4fdc7194f885c288317b55
SHA1 hash: 42166d9321e30e79c33583e77a0d3de67e6142f2
MD5 hash: 86ab45f914a047213012a783615a54fa
humanhash: hydrogen-lemon-fillet-lima
File name:doc20240627-00073.bat
Download: download sample
Signature GuLoader
Create hunting rule
File size:408'613 bytes
First seen:2024-06-27 09:28:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 6144:bVGdx6xuO1TzGL7Bq0XtpZ+lsMA2Usp58ie1VvfpK70qkmXkbgn3/2tw7:ht1TzGLFtXtKxxEr1xg70ZEkbM3/2tw7
TLSH T192940150B5E8D2E7D9BE0831DC6F9A715AB2783CEFC41E7A62C42B0E6437351510E29D
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):PE icon
dhash icon 9c26a88c86b4fc0e (1 x GuLoader)
Reporter threatcat_ch
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
400
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527.exe
Verdict:
Malicious activity
Analysis date:
2024-06-27 09:29:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e7e3399b-82f5-45f5-81ef-65bf51441349

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=667d312fc6541e8c57001124win10vpnfull_triage
Tags:
Encryption Inject
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Searching for the window
Delayed reading of the file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer lolbin masquerade microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/667d30e7910ce98966faed8e/reports/0a416dea-8113-4ee2-878c-1beaf9b66287/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527
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:
Unknown
Link:
https://analyze.intezer.com/analyses/d615a62c-38d2-407b-aee2-658987ad249e
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1463549
Signature
Check if machine is in data center or colocation facility
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Score:
52%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xmwa7ckszappkfiqeuqqqmer34yrw4mstxahljigve6mlwefkutq._file
Verdict:
unknown
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/240627-lfww1sthjb/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/9f22b01d-e32e-4fee-b378-59d1af55d3b2/
SH256 hash:
b8fa7b9393fff910144768588c471ca7c9ec98a2b8b186b2172b8ba7a5279500
MD5 hash:
a6f622a2f12ac10bca04e23deff5cada
SHA1 hash:
abf851b5ccfb64004e9b49718a467bd754545887
Link:
https://www.unpac.me/results/9f22b01d-e32e-4fee-b378-59d1af55d3b2/
SH256 hash:
91b8073e8e67945e14fb10963fc9101fae8c298bd4cd7080b4e47b5bdd4af85c
MD5 hash:
e9f3051a79f12aed819b91f028a463c1
SHA1 hash:
d088868584cdc04d391ec27cd318034a5ce562bc
Link:
https://www.unpac.me/results/9f22b01d-e32e-4fee-b378-59d1af55d3b2/
SH256 hash:
bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527
MD5 hash:
86ab45f914a047213012a783615a54fa
SHA1 hash:
42166d9321e30e79c33583e77a0d3de67e6142f2
Link:
https://www.unpac.me/results/9f22b01d-e32e-4fee-b378-59d1af55d3b2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527

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:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Executable exe bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527

(this sample)

  
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
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::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::MoveFileExW
KERNEL32.dll::MoveFileW
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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