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Windows Analysis Report
cP5nXH8fQI

Overview

General Information

Sample Name:	cP5nXH8fQI (renamed file extension from none to exe)
Analysis ID:	559052
MD5:	37fc2aa213d1607545a9b876f4aa543e
SHA1:	7da3e745ac618d2aee602d1de1957aa4442c98ed
SHA256:	4486318d812a32852db5a4b8bd19dc456890b6c9a1bd03ffe94e2ef189394d90
Tags:	32exetrojan
Infos:

Detection

GuLoader

Score:	68
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Found malware configuration

Multi AV Scanner detection for submitted file

Yara detected GuLoader

C2 URLs / IPs found in malware configuration

Uses 32bit PE files

Drops PE files

Contains functionality to read the PEB

Contains functionality to shutdown / reboot the system

Uses code obfuscation techniques (call, push, ret)

Detected potential crypto function

PE / OLE file has an invalid certificate

Contains functionality to call native functions

Contains functionality to dynamically determine API calls

Contains functionality for execution timing, often used to detect debuggers

Abnormal high CPU Usage

Contains functionality for read data from the clipboard

Classification

Process Tree

System is w10x64

cP5nXH8fQI.exe (PID: 6392 cmdline: "C:\Users\user\Desktop\cP5nXH8fQI.exe" MD5: 37FC2AA213D1607545A9B876F4AA543E)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://bangladeshshoecity.com/im"}

Yara Overview

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000002.767624973.0000000002940000.00000040.00000800.00020000.00000000.sdmp	JoeSecurity_GuLoader_2	Yara detected GuLoader	Joe Security

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection

Found malware configuration

Source: 00000000.00000002.767624973.0000000002940000.00000040.00000800.00020000.00000000.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "https://bangladeshshoecity.com/im"}

Multi AV Scanner detection for submitted file

Source: cP5nXH8fQI.exe	Virustotal: Detection: 10%			Perma Link
Source: cP5nXH8fQI.exe	ReversingLabs: Detection: 18%

Source: cP5nXH8fQI.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Source: cP5nXH8fQI.exe

Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_00405C49 GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose,
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_00406873 FindFirstFileW,FindClose,
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0040290B FindFirstFileW,

Networking

C2 URLs / IPs found in malware configuration

Source: Malware configuration extractor

URLs: https://bangladeshshoecity.com/im

Source: cP5nXH8fQI.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0
Source: cP5nXH8fQI.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertSHA2AssuredIDTimestampingCA.crt0
Source: cP5nXH8fQI.exe	String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0P
Source: cP5nXH8fQI.exe	String found in binary or memory: http://crl3.digicert.com/sha2-assured-ts.crl02
Source: cP5nXH8fQI.exe	String found in binary or memory: http://crl4.digicert.com/DigiCertAssuredIDRootCA.crl0:
Source: cP5nXH8fQI.exe	String found in binary or memory: http://crl4.digicert.com/sha2-assured-ts.crl0
Source: cP5nXH8fQI.exe	String found in binary or memory: http://nsis.sf.net/NSIS_ErrorError
Source: cP5nXH8fQI.exe	String found in binary or memory: http://ocsp.digicert.com0C
Source: cP5nXH8fQI.exe	String found in binary or memory: http://ocsp.digicert.com0O
Source: cP5nXH8fQI.exe	String found in binary or memory: http://www.digicert.com/CPS0
Source: cP5nXH8fQI.exe	String found in binary or memory: https://www.digicert.com/CPS0

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_004056DE GetDlgItem,GetDlgItem,GetDlgItem,GetDlgItem,GetClientRect,GetSystemMetrics,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,SendMessageW,ShowWindow,ShowWindow,GetDlgItem,SendMessageW,SendMessageW,SendMessageW,GetDlgItem,CreateThread,FindCloseChangeNotification,ShowWindow,ShowWindow,ShowWindow,ShowWindow,SendMessageW,CreatePopupMenu,AppendMenuW,GetWindowRect,TrackPopupMenu,SendMessageW,OpenClipboard,EmptyClipboard,GlobalAlloc,GlobalLock,SendMessageW,GlobalUnlock,SetClipboardData,CloseClipboard,

Source: cP5nXH8fQI.exe

Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_0040352D EntryPoint,SetErrorMode,GetVersionExW,GetVersionExW,GetVersionExW,lstrlenA,#17,OleInitialize,SHGetFileInfoW,GetCommandLineW,CharNextW,GetTempPathW,GetTempPathW,GetWindowsDirectoryW,lstrcatW,GetTempPathW,lstrcatW,SetEnvironmentVariableW,SetEnvironmentVariableW,SetEnvironmentVariableW,DeleteFileW,lstrcatW,lstrcatW,lstrcatW,lstrcmpiW,SetCurrentDirectoryW,DeleteFileW,CopyFileW,CloseHandle,OleUninitialize,ExitProcess,GetCurrentProcess,OpenProcessToken,LookupPrivilegeValueW,AdjustTokenPrivileges,ExitWindowsEx,ExitProcess,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0040755C
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_00406D85
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_70581BFF
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294559A
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02943A95
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02945881
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_029452F8
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02940217
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02945435
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294744F
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294767A
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294719A
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_029441F1
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_029439FE
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_029415FB
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02946D17
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02943B22
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02943D5A
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294734F

Source: cP5nXH8fQI.exe

Static PE information: invalid certificate

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294559A NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_029452F8 NtAllocateVirtualMemory,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Process Stats: CPU usage > 98%

Source: cP5nXH8fQI.exe	Virustotal: Detection: 10%
Source: cP5nXH8fQI.exe	ReversingLabs: Detection: 18%

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

File read: C:\Users\user\Desktop\cP5nXH8fQI.exe

Jump to behavior

Source: cP5nXH8fQI.exe

Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f486a52-3cb1-48fd-8f50-b8dc300d9f9d}\InProcServer32

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

File created: C:\Users\user\AppData\Local\Temp\nsr50D.tmp

Jump to behavior

Source: classification engine

Classification label: mal68.troj.winEXE@1/3@0/0

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_004021AA CoCreateInstance,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

File read: C:\Users\desktop.ini

Jump to behavior

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_0040498A GetDlgItem,SetWindowTextW,SHBrowseForFolderW,CoTaskMemFree,lstrcmpiW,lstrcatW,SetDlgItemTextW,GetDiskFreeSpaceW,MulDiv,SetDlgItemTextW,

Source: cP5nXH8fQI.exe

Static PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT

Data Obfuscation

Yara detected GuLoader

Source: Yara match

File source: 00000000.00000002.767624973.0000000002940000.00000040.00000800.00020000.00000000.sdmp, type: MEMORY

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_705830C0 push eax; ret
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02942EF0 push es; iretd

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_70581BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

File created: C:\Users\user\AppData\Local\Temp\nss731.tmp\System.dll

Jump to dropped file

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Process information set: NOOPENFILEERRORBOX

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_029450C4 rdtsc

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_00405C49 GetTempPathW,DeleteFileW,lstrcatW,lstrcatW,lstrlenW,FindFirstFileW,FindNextFileW,FindClose,
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_00406873 FindFirstFileW,FindClose,
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0040290B FindFirstFileW,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	API call chain: ExitProcess graph end node
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	API call chain: ExitProcess graph end node

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294689E mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_0294744F mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02944F83 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\cP5nXH8fQI.exe	Code function: 0_2_02946BA0 mov eax, dword ptr fs:[00000030h]

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_70581BFF GlobalAlloc,lstrcpyW,lstrcpyW,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,GlobalFree,lstrcpyW,GetModuleHandleW,LoadLibraryW,GetProcAddress,lstrlenW,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_029450C4 rdtsc

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Code function: 0_2_0294809F RtlAddVectoredExceptionHandler,

Source: C:\Users\user\Desktop\cP5nXH8fQI.exe

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	1 Native API	Path Interception	1 Access Token Manipulation	1 Access Token Manipulation	OS Credential Dumping	1 Security Software Discovery	Remote Services	1 Archive Collected Data	Exfiltration Over Other Network Medium	1 Encrypted Channel	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	1 System Shutdown/Reboot
Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	1 Obfuscated Files or Information	LSASS Memory	2 File and Directory Discovery	Remote Desktop Protocol	1 Clipboard Data	Exfiltration Over Bluetooth	1 Application Layer Protocol	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	At (Linux)	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	3 System Information Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Source	Detection	Scanner	Label	Link
cP5nXH8fQI.exe	11%	Virustotal		Browse
cP5nXH8fQI.exe	19%	ReversingLabs	Win32.Downloader.GuLoader

Dropped Files

Source	Detection	Scanner	Label	Link
C:\Users\user\AppData\Local\Temp\nss731.tmp\System.dll	0%	Metadefender		Browse
C:\Users\user\AppData\Local\Temp\nss731.tmp\System.dll	0%	ReversingLabs

Source	Detection	Scanner	Label	Link
https://bangladeshshoecity.com/im	0%	Avira URL Cloud	safe

Name	Malicious	Antivirus Detection	Reputation
0,0,238381330,0000000000095000,00000104,00000010,00020000,00000000,1,0	true		low
https://bangladeshshoecity.com/im	true	Avira URL Cloud: safe	unknown

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://nsis.sf.net/NSIS_ErrorError	cP5nXH8fQI.exe	false		high

World Map of Contacted IPs

⊘No contacted IP infos

General Information

Joe Sandbox Version:	34.0.0 Boulder Opal
Analysis ID:	559052
Start date:	24.01.2022
Start time:	20:09:34
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 7m 43s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	cP5nXH8fQI (renamed file extension from none to exe)
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211
Number of analysed new started processes analysed:	28
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled HDC enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Detection:	MAL
Classification:	mal68.troj.winEXE@1/3@0/0
EGA Information:	Successful, ratio: 100%
HDC Information:	Successful, ratio: 41.6% (good quality ratio 41%) Quality average: 86.9% Quality standard deviation: 21.2%
HCA Information:	Successful, ratio: 100% Number of executed functions: 0 Number of non-executed functions: 0
Cookbook Comments:	Adjust boot time Enable AMSI Override analysis time to 240s for sample files taking high CPU consumption

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, audiodg.exe, BackgroundTransferHost.exe, HxTsr.exe, RuntimeBroker.exe, WMIADAP.exe, backgroundTaskHost.exe, SgrmBroker.exe, conhost.exe, svchost.exe, wuapihost.exe
Excluded IPs from analysis (whitelisted): 23.3.109.212
Excluded domains from analysis (whitelisted): ris.api.iris.microsoft.com, e12564.dspb.akamaiedge.net, client.wns.windows.com, fs.microsoft.com, store-images.s-microsoft.com, ctldl.windowsupdate.com, store-images.s-microsoft.com-c.edgekey.net, displaycatalog.mp.microsoft.com, img-prod-cms-rt-microsoft-com.akamaized.net, arc.msn.com
Not all processes where analyzed, report is missing behavior information

Process:	C:\Users\user\Desktop\cP5nXH8fQI.exe
File Type:	DOS executable (COM)
Category:	dropped
Size (bytes):	33645
Entropy (8bit):	7.620146538761287
Encrypted:	false
SSDEEP:	768:tEn1wCHxTRSJLLV7yueznYuQa6OjAaOIOaW3BISs:8UJ/V7ytYy6oebxIn
MD5:	0614A80093A3722C605EFD8B79692F37
SHA1:	16CBC940F64C331B2AD8F75C1C59321EB7CDEF1D
SHA-256:	FE4DB2C0884A3AD00C2B0D47C119B1293520E35308993870EAC4B211847E7229
SHA-512:	3E4110AC344CCF265F5FB28D247A6AD62D00485D2CC22398012B10E679E4D043FACC0CC1AFD6DA4D565D15304C082684E525490571AB349D963C38A6D669B815
Malicious:	false
Reputation:	low
Preview:	.W_.?.u.....u.....u........h.U!C.4$...i.4$P.k...$....,$.x...,$lcK.Z1..4.Tf......9.u.W..........T..,..F......j.va...j....}@W.3...........tV=...B...". ..^z.D.:......T..;...nL~..#Kvx.1X..g....O.........z@.W..s-.q..Y.....F......j.va...j....}@W.3...........tV=...B...". ..^z.D.:......T..;...nL~..#Kvx.1X..g....O.........z@.W..s-.q..Y.q.l..6.#H.\:.g!..S.6y...z...V.QB....V!.\|7..K$.:..c..T.x...8o.^(!...Tf..T...Tfw.......9.f.o."..5f.o....T...q.y.......HlQy.......mzUf...5...#.m.zBZ.p.......#.....`.2.].Tfqc.f..3x.T>qk.g....m....T......T...Tf.c....T..!.B.@.o.g B...#g B.s..og.B.h..0b...........).{.0...\f..".y.p...........b...N:....}i.K...<........%..R.....%Af...W...c.....h....y....[.B4.2%..v.... F...I.TfA..j.g......9....g....f7sk.g..<.b...m.Uf.\`V....'.......1D"H...n...N.Z.(.\|....'h.=y$XC......X.;}.../...9.V.....Tf4..H.....E....a.:....@.3?.gPB.Bb.y.pr..U.......<........kR..'K.oF.........#...d..R.........R.+e.'*1T.......j.<.T&...f.y.p."t.m2E..9.(...

C:\Users\user\AppData\Local\Temp\gamer.txt

Download File

Process:	C:\Users\user\Desktop\cP5nXH8fQI.exe
File Type:	ASCII text, with very long lines, with no line terminators
Category:	dropped
Size (bytes):	16555
Entropy (8bit):	5.9518641421213605
Encrypted:	false
SSDEEP:	384:HpBOk6soHG6Nun3UPBApXPE8eMag91API7ee872UmLZ7:HmkfOG6NNyp/dn19N7U71mLZ
MD5:	695A2030432B3D981B012A42EDCA055A
SHA1:	31283CF8F970E22E7C9B6FCB811B9C1608997211
SHA-256:	F0568B8400FE6F4621B3E62C56B3C3AB9712DD6D30966A348EB3497ACF6B226A
SHA-512:	0095FE21135FCCB9C5723D583C2087FB9D9CD61CB90BB5C96E11EA76469A3744B7F068B7301F7342AF95642D18921763B250FBB9E8F16F5CC9124300E6A97C5C
Malicious:	false
Reputation:	low
Preview:	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

C:\Users\user\AppData\Local\Temp\nss731.tmp\System.dll

Download File

Process:	C:\Users\user\Desktop\cP5nXH8fQI.exe
File Type:	PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
Category:	dropped
Size (bytes):	12288
Entropy (8bit):	5.814115788739565
Encrypted:	false
SSDEEP:	192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
MD5:	CFF85C549D536F651D4FB8387F1976F2
SHA1:	D41CE3A5FF609DF9CF5C7E207D3B59BF8A48530E
SHA-256:	8DC562CDA7217A3A52DB898243DE3E2ED68B80E62DDCB8619545ED0B4E7F65A8
SHA-512:	531D6328DAF3B86D85556016D299798FA06FEFC81604185108A342D000E203094C8C12226A12BD6E1F89B0DB501FB66F827B610D460B933BD4AB936AC2FD8A88
Malicious:	false
Antivirus:	Antivirus: Metadefender, Detection: 0%, Browse Antivirus: ReversingLabs, Detection: 0%
Reputation:	moderate, very likely benign file
Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......qr.5.D.5.D.5.D...J.2.D.5.E.!.D.....2.D.a0t.1.D.V1n.4.D..3@.4.D.Rich5.D.........PE..L.....Oa...........!....."..................@...............................p............@..........................B.......@..P............................`.......................................................@..X............................text.... .......".................. ..`.rdata..c....@.......&..............@..@.data...x....P.......*..............@....reloc.......`.......,..............@..B................................................................................................................................................................................................................................................................................................................................................................................................

Static File Info

General

File type:	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
Entropy (8bit):	7.521910150341084
TrID:	Win32 Executable (generic) a (10002005/4) 99.96% Generic Win/DOS Executable (2004/3) 0.02% DOS Executable Generic (2002/1) 0.02% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
File name:	cP5nXH8fQI.exe
File size:	95264
MD5:	37fc2aa213d1607545a9b876f4aa543e
SHA1:	7da3e745ac618d2aee602d1de1957aa4442c98ed
SHA256:	4486318d812a32852db5a4b8bd19dc456890b6c9a1bd03ffe94e2ef189394d90
SHA512:	bf750937cde6af507628a730b34be52bba983be99861f46fd92ebfbc3f4a9c7d30534ac5378e802a0b09bad8d168450679abd6d5e5543a8ed88467c051d1a32a
SSDEEP:	1536:6/T2X/jN2vxZz0DTHUpouZZb5a6fy2W8utruxlQIj/qrlyZ6PeZuH8k29xE+1Q:6bG7N2kDTHUpouZZbUuy2W8uxuzRQT4o
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$........1...Pf..Pf..Pf._9..Pf..Pg.LPf._;..Pf..sV..Pf..V`..Pf.Rich.Pf.........................PE..L...Z.Oa.................j.........

File Icon


Icon Hash:	b2a88c96b2ca6a72

Static PE Info

General

Entrypoint:	0x40352d
Entrypoint Section:	.text
Digitally signed:	true
Imagebase:	0x400000
Subsystem:	windows gui
Image File Characteristics:	LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
DLL Characteristics:	NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT
Time Stamp:	0x614F9B5A [Sat Sep 25 21:57:46 2021 UTC]
TLS Callbacks:
CLR (.Net) Version:
OS Version Major:	4
OS Version Minor:	0
File Version Major:	4
File Version Minor:	0
Subsystem Version Major:	4
Subsystem Version Minor:	0
Import Hash:	56a78d55f3f7af51443e58e0ce2fb5f6

Authenticode Signature

Signature Valid:	false
Signature Issuer:	E=DAALAMMENES@sdvane.Tre, CN=Gennemtrkke, OU=begynderkursusset, O=Prudences, L=UNPIONEERING, S=FILTERKURVERS, C=MM
Signature Validation Error:	A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider
Error Number:	-2146762487
Not Before, Not After	1/23/2022 7:50:30 AM 1/23/2023 7:50:30 AM
Subject Chain	E=DAALAMMENES@sdvane.Tre, CN=Gennemtrkke, OU=begynderkursusset, O=Prudences, L=UNPIONEERING, S=FILTERKURVERS, C=MM
Version:	3
Thumbprint MD5:	671A5B893A26A086EBCF47C366C6CA07
Thumbprint SHA-1:	F6F1C0182560058469D9B93DE8B83C062BB3AB74
Thumbprint SHA-256:	B66611C64E384A6777717730C3A835575A37176671AF55C8410BC11848B75E0C
Serial:	00

Entrypoint Preview

Instruction
push ebp
mov ebp, esp
sub esp, 000003F4h
push ebx
push esi
push edi
push 00000020h
pop edi
xor ebx, ebx
push 00008001h
mov dword ptr [ebp-14h], ebx
mov dword ptr [ebp-04h], 0040A2E0h
mov dword ptr [ebp-10h], ebx
call dword ptr [004080CCh]
mov esi, dword ptr [004080D0h]
lea eax, dword ptr [ebp-00000140h]
push eax
mov dword ptr [ebp-0000012Ch], ebx
mov dword ptr [ebp-2Ch], ebx
mov dword ptr [ebp-28h], ebx
mov dword ptr [ebp-00000140h], 0000011Ch
call esi
test eax, eax
jne 00007F9D10A94DAAh
lea eax, dword ptr [ebp-00000140h]
mov dword ptr [ebp-00000140h], 00000114h
push eax
call esi
mov ax, word ptr [ebp-0000012Ch]
mov ecx, dword ptr [ebp-00000112h]
sub ax, 00000053h
add ecx, FFFFFFD0h
neg ax
sbb eax, eax
mov byte ptr [ebp-26h], 00000004h
not eax
and eax, ecx
mov word ptr [ebp-2Ch], ax
cmp dword ptr [ebp-0000013Ch], 0Ah
jnc 00007F9D10A94D7Ah
and word ptr [ebp-00000132h], 0000h
mov eax, dword ptr [ebp-00000134h]
movzx ecx, byte ptr [ebp-00000138h]
mov dword ptr [00434FB8h], eax
xor eax, eax
mov ah, byte ptr [ebp-0000013Ch]
movzx eax, ax
or eax, ecx
xor ecx, ecx
mov ch, byte ptr [ebp-2Ch]
movzx ecx, cx
shl eax, 10h
or eax, ecx

Rich Headers

Programming Language:

[EXP] VC++ 6.0 SP5 build 8804

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x8610	0xa0	.rdata
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x4c000	0xe28	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x15fa0	0x1480	.data
IMAGE_DIRECTORY_ENTRY_BASERELOC	0x0	0x0
IMAGE_DIRECTORY_ENTRY_DEBUG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x0	0x0
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IAT	0x8000	0x2b0	.rdata
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x1000	0x6897	0x6a00	False	0.666126179245	data	6.45839821493	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.rdata	0x8000	0x14a6	0x1600	False	0.439275568182	data	5.02410928126	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.data	0xa000	0x2b018	0x600	False	0.521484375	data	4.15458210409	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.ndata	0x36000	0x16000	0x0	False	0	empty	0.0	IMAGE_SCN_MEM_WRITE, IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ
.rsrc	0x4c000	0xe28	0x1000	False	0.378662109375	data	4.00654037497	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x4c208	0x2e8	data	English	United States
RT_DIALOG	0x4c4f0	0x100	data	English	United States
RT_DIALOG	0x4c5f0	0x11c	data	English	United States
RT_DIALOG	0x4c710	0xc4	data	English	United States
RT_DIALOG	0x4c7d8	0x60	data	English	United States
RT_GROUP_ICON	0x4c838	0x14	data	English	United States
RT_VERSION	0x4c850	0x294	data	English	United States
RT_MANIFEST	0x4cae8	0x33e	XML 1.0 document, ASCII text, with very long lines, with no line terminators	English	United States

Imports

DLL	Import
ADVAPI32.dll	RegCreateKeyExW, RegEnumKeyW, RegQueryValueExW, RegSetValueExW, RegCloseKey, RegDeleteValueW, RegDeleteKeyW, AdjustTokenPrivileges, LookupPrivilegeValueW, OpenProcessToken, SetFileSecurityW, RegOpenKeyExW, RegEnumValueW
SHELL32.dll	SHGetSpecialFolderLocation, SHFileOperationW, SHBrowseForFolderW, SHGetPathFromIDListW, ShellExecuteExW, SHGetFileInfoW
ole32.dll	OleInitialize, OleUninitialize, CoCreateInstance, IIDFromString, CoTaskMemFree
COMCTL32.dll	ImageList_Create, ImageList_Destroy, ImageList_AddMasked
USER32.dll	GetClientRect, EndPaint, DrawTextW, IsWindowEnabled, DispatchMessageW, wsprintfA, CharNextA, CharPrevW, MessageBoxIndirectW, GetDlgItemTextW, SetDlgItemTextW, GetSystemMetrics, FillRect, AppendMenuW, TrackPopupMenu, OpenClipboard, SetClipboardData, CloseClipboard, IsWindowVisible, CallWindowProcW, GetMessagePos, CheckDlgButton, LoadCursorW, SetCursor, GetSysColor, SetWindowPos, GetWindowLongW, PeekMessageW, SetClassLongW, GetSystemMenu, EnableMenuItem, GetWindowRect, ScreenToClient, EndDialog, RegisterClassW, SystemParametersInfoW, CreateWindowExW, GetClassInfoW, DialogBoxParamW, CharNextW, ExitWindowsEx, DestroyWindow, CreateDialogParamW, SetTimer, SetWindowTextW, PostQuitMessage, SetForegroundWindow, ShowWindow, wsprintfW, SendMessageTimeoutW, FindWindowExW, IsWindow, GetDlgItem, SetWindowLongW, LoadImageW, GetDC, ReleaseDC, EnableWindow, InvalidateRect, SendMessageW, DefWindowProcW, BeginPaint, EmptyClipboard, CreatePopupMenu
GDI32.dll	SetBkMode, SetBkColor, GetDeviceCaps, CreateFontIndirectW, CreateBrushIndirect, DeleteObject, SetTextColor, SelectObject
KERNEL32.dll	GetExitCodeProcess, WaitForSingleObject, GetModuleHandleA, GetProcAddress, GetSystemDirectoryW, lstrcatW, Sleep, lstrcpyA, WriteFile, GetTempFileNameW, CreateFileW, lstrcmpiA, RemoveDirectoryW, CreateProcessW, CreateDirectoryW, GetLastError, CreateThread, GlobalLock, GlobalUnlock, GetDiskFreeSpaceW, WideCharToMultiByte, lstrcpynW, lstrlenW, SetErrorMode, GetVersionExW, GetCommandLineW, GetTempPathW, GetWindowsDirectoryW, SetEnvironmentVariableW, CopyFileW, ExitProcess, GetCurrentProcess, GetModuleFileNameW, GetFileSize, GetTickCount, MulDiv, SetFileAttributesW, GetFileAttributesW, SetCurrentDirectoryW, MoveFileW, GetFullPathNameW, GetShortPathNameW, SearchPathW, CompareFileTime, SetFileTime, CloseHandle, lstrcmpiW, lstrcmpW, ExpandEnvironmentStringsW, GlobalFree, GlobalAlloc, GetModuleHandleW, LoadLibraryExW, MoveFileExW, FreeLibrary, WritePrivateProfileStringW, GetPrivateProfileStringW, lstrlenA, MultiByteToWideChar, ReadFile, SetFilePointer, FindClose, FindNextFileW, FindFirstFileW, DeleteFileW

Version Infos

Description	Data
LegalCopyright	Lesney Products
FileVersion	1.2.1
CompanyName	Lesney Products
LegalTrademarks	Lesney Products
Comments	Lesney Products
ProductName	Lesney Products
FileDescription	Lesney Products
Translation	0x0409 0x04b0

Possible Origin

Language of compilation system	Country where language is spoken	Map
English	United States

Start time:	20:10:29
Start date:	24/01/2022
Path:	C:\Users\user\Desktop\cP5nXH8fQI.exe
Wow64 process (32bit):	true
Commandline:	"C:\Users\user\Desktop\cP5nXH8fQI.exe"
Imagebase:	0x400000
File size:	95264 bytes
MD5 hash:	37FC2AA213D1607545A9B876F4AA543E
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_GuLoader_2, Description: Yara detected GuLoader, Source: 00000000.00000002.767624973.0000000002940000.00000040.00000800.00020000.00000000.sdmp, Author: Joe Security
Reputation:	low

Disassembly

⊘No disassembly

Description:	Adversaries may directly interact with the native OS application programming interface (API) to execute behaviors. Native APIs provide a controlled means of calling low-level OS services within the kernel, such as those involving hardware/devices, memory, and processes.These native APIs are leveraged by the OS during system boot (when other system components are not yet initialized) as well as carrying out tasks and requests during routine operations.
Tactics:	Execution
Data Sources:	API monitoring, Loaded DLLs, Process monitoring, System calls
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may modify access tokens to operate under a different user or system security context to perform actions and bypass access controls. Windows uses access tokens to determine the ownership of a running process. A user can manipulate access tokens to make a running process appear as though it is the child of a different process or belongs to someone other than the user that started the process. When this occurs, the process also takes on the security context associated with the new token.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	API monitoring, Access tokens, Authentication logs, Process command-line parameters, Process monitoring, Windows event logs
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, Email gateway, Environment variable, File monitoring, Malware reverse engineering, Network intrusion detection system, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, SSL/TLS inspection, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may compress and/or encrypt data that is collected prior to exfiltration. Compressing the data can help to obfuscate the collected data and minimize the amount of data sent over the network. Encryption can be used to hide information that is being exfiltrated from detection or make exfiltration less conspicuous upon inspection by a defender.
Tactics:	Collection
Data Sources:	Binary file metadata, File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may collect data stored in the clipboard from users copying information within or between applications.
Tactics:	Collection
Data Sources:	API monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	DNS records, Netflow/Enclave netflow, Network protocol analysis, Packet capture, Process monitoring, Process use of network
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems. Operating systems may contain commands to initiate a shutdown/reboot of a machine. In some cases, these commands may also be used to initiate a shutdown/reboot of a remote computer.Shutting down or rebooting systems may disrupt access to computer resources for legitimate users.
Tactics:	Impact
Data Sources:	Process command-line parameters, Process monitoring, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Windows Analysis Report cP5nXH8fQI

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Threatname: GuLoader

Yara Overview

Memory Dumps

Sigma Overview

Jbx Signature Overview

AV Detection

Compliance

Spreading

Networking

Key, Mouse, Clipboard, Microphone and Screen Capturing

System Summary

Data Obfuscation

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

Language, Device and Operating System Detection

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

URLs from Memory and Binaries

World Map of Contacted IPs

General Information

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

C:\Users\user\AppData\Local\Temp\Stenkastenes.dat

C:\Users\user\AppData\Local\Temp\gamer.txt

C:\Users\user\AppData\Local\Temp\nss731.tmp\System.dll

Static File Info

General

File Icon

Static PE Info

General

Authenticode Signature

Entrypoint Preview

Rich Headers

Data Directories

Sections

Resources

Imports

Version Infos

Possible Origin

Network Behavior

Statistics

System Behavior

Analysis Process: cP5nXH8fQI.exePID: 6392, Parent PID: 804

General

Windows Analysis Report
cP5nXH8fQI