MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
SHA3-384 hash: f7544e39a08c51e1b3b36c06b016774a1c792e13ae89f373054a86c4e46bc6889311ec313b2278ed455db73d49fc94cb
SHA1 hash: 0647a8c66d7c7546d0cc180a5b439b98365439a4
MD5 hash: a79731419b516a329926e2e20d3e55c8
humanhash: golf-violet-missouri-spaghetti
File name:doc05092024.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:660'072 bytes
First seen:2024-05-10 08:21:48 UTC
Last seen:2024-05-13 13:50:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (301 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 12288:osv8/fp1y1Z0do4agE4SnUeOxqRqi7SaDjb5c2psh:Fv83p11agE4H0Py26
TLSH T10DE4F182764FC886F8521170986ACA74535BFFA44034879636E3AF2FF9F62631607E47
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 ecece8e0e0e3e2e4 (1 x GuLoader, 1 x Formbook)
Reporter cocaman
Tags:exe GuLoader RFQ signed

Code Signing Certificate

Organisation:Jnede
Issuer:Jnede
Algorithm:sha256WithRSAEncryption
Valid from:2023-08-29T04:16:41Z
Valid to:2026-08-28T04:16:41Z
Serial number: 10af7a970e230cefd37eeba7bda218bfa1d5f648
Thumbprint Algorithm:SHA256
Thumbprint: feacd185c0c091105b70de75a24f57ceed344f57d8841eae4e2a8b293e9a5c44
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
302
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6f1805890ac285167f499cced29da939.zip
Verdict:
No threats detected
Analysis date:
2024-05-09 04:49:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4e2723e4-9b08-4dfb-b61e-afbe2c145969

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Packed2.46800.20044.32493.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Launching a process
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/663dd93511114a9ab5e7b157/reports/55008af9-35aa-4c82-ae02-280e7906e62e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e912f270-a9ef-4e5d-8ab1-dc9e5e3dd0ae
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1439447
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Sample uses process hollowing technique
Sigma detected: Suspicious Script Execution From Temp Folder
Suspicious powershell command line found
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1439447 Sample: doc05092024.exe Startdate: 10/05/2024 Architecture: WINDOWS Score: 92 36 elchupetedemark.com 2->36 40 Multi AV Scanner detection for submitted file 2->40 42 Yara detected GuLoader 2->42 44 Sigma detected: Suspicious Script Execution From Temp Folder 2->44 10 doc05092024.exe 25 2->10         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\...\Stripiest.Und, ASCII 10->32 dropped 48 Suspicious powershell command line found 10->48 14 powershell.exe 20 10->14         started        signatures6 process7 file8 34 C:\Users\user\AppData\...\Hypoconule.exe, PE32 14->34 dropped 50 Obfuscated command line found 14->50 52 Writes to foreign memory regions 14->52 54 Sample uses process hollowing technique 14->54 56 2 other signatures 14->56 18 Hypoconule.exe 2 7 14->18         started        22 conhost.exe 14->22         started        24 cmd.exe 1 14->24         started        signatures9 process10 dnsIp11 38 elchupetedemark.com 82.98.176.12, 443, 49712, 49713 DINAHOSTING-ASES Spain 18->38 46 Multi AV Scanner detection for dropped file 18->46 26 cmd.exe 1 18->26         started        signatures12 process13 process14 28 conhost.exe 26->28         started        30 reg.exe 1 1 26->30         started       
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-05-08 23:36:27 UTC
File Type:
PE (Exe)
Extracted files:
11
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eibiiqxfvye7dz6652mr2ujpyip3ijgx67mkewy6jaw4iqxqocwq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution persistence
Link:
https://tria.ge/reports/240510-j9j37sfh67/
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad
MD5 hash:
a79731419b516a329926e2e20d3e55c8
SHA1 hash:
0647a8c66d7c7546d0cc180a5b439b98365439a4
Link:
https://www.unpac.me/results/307e0bed-44ed-4ef3-867e-b2b12ba3a53a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/22028442e5ae/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/22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad

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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers
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.

Malspam

GuLoader

7z 8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89

GuLoader

Executable exe 22028442e5ae09f1e7deee991d512fc21fb424d7f7d8a25b1e482dc442f070ad

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 8357bb98a030a5838b78da9450401e9ef2457defd9ebcd7c0ec025d7f7786d89
  
Dropped by
MD5 6f1805890ac285167f499cced29da939

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
AUTH_APIManipulates User AuthorizationADVAPI32.dll::SetFileSecurityA
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteA
SHELL32.dll::SHFileOperationA
SHELL32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegQueryValueExA
ADVAPI32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExA
USER32.dll::OpenClipboard
USER32.dll::PeekMessageA
USER32.dll::CreateWindowExA

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