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Windows Analysis Report ftyaXQevlQ.exe

Overview

General Information

Sample Name:	ftyaXQevlQ.exe
Analysis ID:	458362
MD5:	7a90c8f725811e53a27ecb8e2c6a952b
SHA1:	d09f363cefebf3877a29f250fba3ba7affe6549f
SHA256:	2d2796f4298b67f77555e446cfe4eca0559ddee6cdf6371524051a42f8dbd291
Tags:	exe
Infos:
Most interesting Screenshot:

Detection

GuLoader

Score:	84
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

Contains functionality to detect hardware virtualization (CPUID execution measurement)

Found potential dummy code loops (likely to delay analysis)

Machine Learning detection for sample

Tries to detect virtualization through RDTSC time measurements

Abnormal high CPU Usage

Contains functionality for execution timing, often used to detect debuggers

Contains functionality to call native functions

Contains functionality to query CPU information (cpuid)

Contains functionality to read the PEB

Detected potential crypto function

PE file contains strange resources

Program does not show much activity (idle)

Sample file is different than original file name gathered from version info

Uses 32bit PE files

Uses code obfuscation techniques (call, push, ret)

Classification

Process Tree

System is w10x64

ftyaXQevlQ.exe (PID: 6588 cmdline: 'C:\Users\user\Desktop\ftyaXQevlQ.exe' MD5: 7A90C8F725811E53A27ECB8E2C6A952B)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "http://101.99.94.119/WEALTHKELLS_QhOVDYr246"}

Yara Overview

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000002.1173739995.00000000020F0000.00000040.00000001.sdmp	JoeSecurity_GuLoader_2	Yara detected GuLoader	Joe Security

Sigma Overview

No Sigma rule has matched

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Found malware configuration

Show sources

Source: 00000000.00000002.1173739995.00000000020F0000.00000040.00000001.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "http://101.99.94.119/WEALTHKELLS_QhOVDYr246"}

Multi AV Scanner detection for submitted file

Show sources

Source: ftyaXQevlQ.exe	Virustotal: Detection: 23%			Perma Link
Source: ftyaXQevlQ.exe	ReversingLabs: Detection: 21%

Machine Learning detection for sample

Show sources

Source: ftyaXQevlQ.exe

Joe Sandbox ML: detected

Source: ftyaXQevlQ.exe

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

Networking:

C2 URLs / IPs found in malware configuration

Show sources

Source: Malware configuration extractor

URLs: http://101.99.94.119/WEALTHKELLS_QhOVDYr246

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

Process Stats: CPU usage > 98%

Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F58EC NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5A21 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F58E9 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5953 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F596D NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5961 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5979 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5985 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F599D NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5991 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F59A9 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F59B5 NtAllocateVirtualMemory,

Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_00401144
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F58EC
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5A21
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F8A36
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F2835
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F0231
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F4047
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F2A58
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F7870
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F3894
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F38AB
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F12C7
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F86C5
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F58E9
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F8AE2
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F88FD
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F3AF3
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5707
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5D2B
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F7336
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F7B34
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F1F48
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5953
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F596D
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5961
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F59B5
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F13B2
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F09D6
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F3BE0

Source: ftyaXQevlQ.exe	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: ftyaXQevlQ.exe	Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: ftyaXQevlQ.exe, 00000000.00000000.650866555.0000000000417000.00000002.00020000.sdmp	Binary or memory string: OriginalFilenameBOETTEPAPIR.exe vs ftyaXQevlQ.exe
Source: ftyaXQevlQ.exe, 00000000.00000002.1173563584.0000000002090000.00000002.00000001.sdmp	Binary or memory string: OriginalFilenameuser32j% vs ftyaXQevlQ.exe
Source: ftyaXQevlQ.exe	Binary or memory string: OriginalFilenameBOETTEPAPIR.exe vs ftyaXQevlQ.exe

Source: ftyaXQevlQ.exe

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

Source: classification engine

Classification label: mal84.troj.evad.winEXE@1/0@0/0

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

File created: C:\Users\user\AppData\Local\Temp\~DF4EA5FE16BB58CFDF.TMP

Jump to behavior

Source: ftyaXQevlQ.exe

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

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

Section loaded: C:\Windows\SysWOW64\msvbvm60.dll

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

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

Source: ftyaXQevlQ.exe	Virustotal: Detection: 23%
Source: ftyaXQevlQ.exe	ReversingLabs: Detection: 21%

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match

File source: 00000000.00000002.1173739995.00000000020F0000.00000040.00000001.sdmp, type: MEMORY

Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_00404542 push ds; retf
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_00405977 push dword ptr [ecx-4E013672h]; retf
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_004017A5 push 00000065h; ret
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_004061A9 push ds; retf
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F8465 push eax; ret
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F1976 push esi; ret

Source: initial sample

Static PE information: section name: .text entropy: 7.06319493547

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

Process information set: NOOPENFILEERRORBOX

Malware Analysis System Evasion:

Contains functionality to detect hardware virtualization (CPUID execution measurement)

Show sources

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

Code function: 0_2_020F58EC NtAllocateVirtualMemory,

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	RDTSC instruction interceptor: First address: 00000000020F7740 second address: 00000000020F7740 instructions: 0x00000000 rdtsc 0x00000002 lfence 0x00000005 shl edx, 20h 0x00000008 or edx, eax 0x0000000a popad 0x0000000b sub edx, 6B2AB29Ch 0x00000011 cmp byte ptr [esi], dl 0x00000013 mov edx, dword ptr [ebp+0000026Ch] 0x00000019 jnc 00007F59F8EA92B7h 0x0000001b mov ebx, eax 0x0000001d shl eax, 05h 0x00000020 add eax, ebx 0x00000022 movzx ecx, byte ptr [esi] 0x00000025 test esi, 8BF3F78Dh 0x0000002b add eax, ecx 0x0000002d xor eax, 241DED1Dh 0x00000032 inc esi 0x00000033 mov dword ptr [ebp+00000269h], eax 0x00000039 mov eax, 268AB9BAh 0x0000003e cmp bx, bx 0x00000041 xor eax, 5F75F58Ch 0x00000046 cmp dx, dx 0x00000049 xor eax, A2125650h 0x0000004e add eax, 2412E59Ah 0x00000053 cmp byte ptr [esi], al 0x00000055 mov eax, dword ptr [ebp+00000269h] 0x0000005b jne 00007F59F8EA91F8h 0x0000005d mov dword ptr [ebp+0000026Ch], edx 0x00000063 mov edx, 0CE9BEB7h 0x00000068 cmp ch, bh 0x0000006a xor edx, 565E109Eh 0x00000070 xor edx, 319D1D69h 0x00000076 pushad 0x00000077 lfence 0x0000007a rdtsc
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	RDTSC instruction interceptor: First address: 00000000020F8317 second address: 00000000020F7740 instructions: 0x00000000 rdtsc 0x00000002 lfence 0x00000005 shl edx, 20h 0x00000008 or edx, eax 0x0000000a popad 0x0000000b mov edi, dword ptr [ebp+00000231h] 0x00000011 mov dword ptr [ebp+00000262h], edx 0x00000017 push esi 0x00000018 jmp 00007F59F8ACA3D5h 0x0000001a call 00007F59F8ACA385h 0x0000001f pop esi 0x00000020 jmp esi 0x00000022 pop esi 0x00000023 mov edx, ecx 0x00000025 push edx 0x00000026 mov edx, dword ptr [ebp+00000262h] 0x0000002c mov dword ptr [ebp+000001BBh], edx 0x00000032 test bx, dx 0x00000035 mov edx, esi 0x00000037 push edx 0x00000038 mov edx, dword ptr [ebp+000001BBh] 0x0000003e cmp dx, ax 0x00000041 mov dword ptr [ebp+00000233h], eax 0x00000047 mov eax, esi 0x00000049 push eax 0x0000004a mov eax, dword ptr [ebp+00000233h] 0x00000050 cmp bh, dh 0x00000052 add dword ptr [esp], ecx 0x00000055 call 00007F59F8AC96F4h 0x0000005a mov esi, dword ptr [esp+04h] 0x0000005e mov eax, 552EAF50h 0x00000063 push ss 0x00000064 pop ss 0x00000065 jmp 00007F59F8ACA3B3h 0x00000067 xor eax, 8A108D49h 0x0000006c add eax, 135A661Ch 0x00000071 xor eax, F2989D30h 0x00000076 test bl, al 0x00000078 test ax, 0000508Eh 0x0000007c mov dword ptr [ebp+0000026Ch], edx 0x00000082 mov edx, 0CE9BEB7h 0x00000087 cmp ch, bh 0x00000089 xor edx, 565E109Eh 0x0000008f xor edx, 319D1D69h 0x00000095 pushad 0x00000096 lfence 0x00000099 rdtsc

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

Code function: 0_2_020F58EC rdtsc

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Anti Debugging:

Found potential dummy code loops (likely to delay analysis)

Show sources

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

Process Stats: CPU usage > 90% for more than 60s

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

Code function: 0_2_020F58EC rdtsc

Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F7A47 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F38AB mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F86C5 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F5513 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\ftyaXQevlQ.exe	Code function: 0_2_020F7367 mov eax, dword ptr fs:[00000030h]

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: ftyaXQevlQ.exe, 00000000.00000002.1173506402.0000000000C40000.00000002.00000001.sdmp	Binary or memory string: Program Manager
Source: ftyaXQevlQ.exe, 00000000.00000002.1173506402.0000000000C40000.00000002.00000001.sdmp	Binary or memory string: Shell_TrayWnd
Source: ftyaXQevlQ.exe, 00000000.00000002.1173506402.0000000000C40000.00000002.00000001.sdmp	Binary or memory string: Progman
Source: ftyaXQevlQ.exe, 00000000.00000002.1173506402.0000000000C40000.00000002.00000001.sdmp	Binary or memory string: Progmanlock

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

Code function: 0_2_020F0231 cpuid

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	Windows Management Instrumentation	Path Interception	Process Injection1	Virtualization/Sandbox Evasion11	OS Credential Dumping	Security Software Discovery31	Remote Services	Archive Collected Data1	Exfiltration Over Other Network Medium	Encrypted Channel1	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Software Packing1	LSASS Memory	Virtualization/Sandbox Evasion11	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Application Layer Protocol1	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	At (Linux)	Logon Script (Windows)	Logon Script (Windows)	Process Injection1	Security Account Manager	Process Discovery1	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
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	Obfuscated Files or Information2	NTDS	System Information Discovery211	Distributed Component Object Model	Input Capture	Scheduled Transfer	Protocol Impersonation	SIM Card Swap		Carrier Billing Fraud

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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
ftyaXQevlQ.exe	24%	Virustotal		Browse
ftyaXQevlQ.exe	21%	ReversingLabs	Win32.Trojan.Vebzenpak
ftyaXQevlQ.exe	100%	Joe Sandbox ML

Dropped Files

No Antivirus matches

Unpacked PE Files

No Antivirus matches

Domains

No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://101.99.94.119/WEALTHKELLS_QhOVDYr246	0%	Avira URL Cloud	safe

Domains and IPs

Contacted Domains

No contacted domains info

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
http://101.99.94.119/WEALTHKELLS_QhOVDYr246	true	Avira URL Cloud: safe	unknown

Contacted IPs

No contacted IP infos

General Information

Joe Sandbox Version:	33.0.0 White Diamond
Analysis ID:	458362
Start date:	03.08.2021
Start time:	09:45:19
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 7m 29s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	ftyaXQevlQ.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:	15
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:	mal84.troj.evad.winEXE@1/0@0/0
EGA Information:	Failed
HDC Information:	Successful, ratio: 3.7% (good quality ratio 1.7%) Quality average: 21.5% Quality standard deviation: 28.9%
HCA Information:	Failed
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .exe Override analysis time to 240s for sample files taking high CPU consumption
Warnings:	Show All Exclude process from analysis (whitelisted): BackgroundTransferHost.exe, backgroundTaskHost.exe, svchost.exe, wuapihost.exe

Simulations

Behavior and APIs

No simulations

Joe Sandbox View / Context

IPs

No context

Domains

No context

ASN

No context

JA3 Fingerprints

No context

Dropped Files

No context

Created / dropped Files

No created / dropped files found

Static File Info

General
File type:	PE32 executable (GUI) Intel 80386, for MS Windows
Entropy (8bit):	6.64426057840022
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:	ftyaXQevlQ.exe
File size:	114688
MD5:	7a90c8f725811e53a27ecb8e2c6a952b
SHA1:	d09f363cefebf3877a29f250fba3ba7affe6549f
SHA256:	2d2796f4298b67f77555e446cfe4eca0559ddee6cdf6371524051a42f8dbd291
SHA512:	3bc71a4b42afbc5dc2423a9a75c325f08d3b2bfd2560d02d28fb5954786e932d2375434df8f761af2dd39bb47cfbd349efbe583dbfd2a34dccaffeb19d34354c
SSDEEP:	1536:Pe4mNWSCMiBwblmQEPpzjASVevRvGDmjkQmiPYnSigBwqSSCEe4mN:cRiOgAoevJGCj+n0Oq9
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$........#...B...B...B..L^...B...`...B...d...B..Rich.B..........PE..L...Cx.M.................@..........D........P....@................

File Icon


Icon Hash:	d5d5959595d5d595

Static PE Info

General
Entrypoint:	0x401144
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x400000
Subsystem:	windows gui
Image File Characteristics:	LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
DLL Characteristics:
Time Stamp:	0x4D157843 [Sat Dec 25 04:51:15 2010 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:	5565993a5a9f2bfb76f28ab304be6bc1

Entrypoint Preview

Instruction
push 00406C00h
call 00007F59F8B9BB05h
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
xor byte ptr [eax], al
add byte ptr [eax], al
dec eax
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add dh, bh
in al, dx
xor al, CEh
sub ebp, ebp
add byte ptr [eax-63h], al
sar esp, cl
dec esi
jc 00007F59F8B9BB1Bh
mov byte ptr [edx], ah
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add dword ptr [eax], eax
add byte ptr [eax], al
inc edx
add byte ptr [esi], al
push eax
add dword ptr [ecx], 4Fh
push esi
inc ebp
push edx
push ebx
push esi
dec ebp
dec ebp
inc ebp
dec esp
push ebx
inc ebp
push edx
dec esi
inc ebp
push ebx
add byte ptr [eax], al
add byte ptr [eax], al
test al, 53h
push ebp
add eax, dword ptr [eax]
add byte ptr [eax], al
add bh, bh
int3
xor dword ptr [eax], eax
pop es
rol byte ptr [F789F3F3h], 00000011h
inc ecx
mov bh, F9h
call 00007F5986F14B57h
pop eax
push ds
outsb
inc eax
cmpsb
mov ebx, 9A4F5394h
xlatb
in al, dx
mov al, A5h
xor esi, dword ptr [ecx-52B0C576h]
xor ebx, dword ptr [ecx-48EE309Ah]
or al, 00h
stosb
add byte ptr [eax-2Dh], ah
xchg eax, ebx
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
imul ebx, dword ptr [ecx+00h], 00583C00h
add byte ptr [eax], al
or eax, 564F4C00h
dec esp
dec ecx
inc edi
inc edi
push edx
inc ebp
dec esp
push ebx

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x14ba4	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x17000	0x5b9e	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
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	0x228	0x20
IMAGE_DIRECTORY_ENTRY_IAT	0x1000	0x7c	.text
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	0x13e24	0x14000	False	0.649719238281	data	7.06319493547	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x15000	0x115c	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x17000	0x5b9e	0x6000	False	0.546020507812	data	6.0337725973	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x1bcf6	0xea8	data
RT_ICON	0x1b44e	0x8a8	dBase IV DBT of @.DBF, block length 1024, next free block index 40, next free block 1318100648, next used block 1320062115
RT_ICON	0x1aee6	0x568	GLS_BINARY_LSB_FIRST
RT_ICON	0x1893e	0x25a8	data
RT_ICON	0x17896	0x10a8	data
RT_ICON	0x1742e	0x468	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0x173d4	0x5a	data
RT_VERSION	0x171e0	0x1f4	data	Chinese	Taiwan

Imports

DLL

Import

MSVBVM60.DLL

_CIcos, _adj_fptan, _adj_fdiv_m64, _adj_fprem1, __vbaHresultCheckObj, _adj_fdiv_m32, _adj_fdiv_m16i, _adj_fdivr_m16i, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, _adj_fpatan, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, _adj_fprem, _adj_fdivr_m64, __vbaFPException, _CIlog, __vbaErrorOverflow, _adj_fdiv_m32i, _adj_fdivr_m32i, _adj_fdivr_m32, _adj_fdiv_r, _CIatan, _allmul, _CItan, _CIexp

Version Infos

Description	Data
Translation	0x0404 0x04b0
ProductVersion	1.00
InternalName	BOETTEPAPIR
FileVersion	1.00
OriginalFilename	BOETTEPAPIR.exe
ProductName	VESPERKLOKKE

Possible Origin

Language of compilation system	Country where language is spoken	Map
Chinese	Taiwan

Network Behavior

No network behavior found

Code Manipulations

Statistics

System Behavior

Analysis Process: ftyaXQevlQ.exe PID: 6588 Parent PID: 5908

General

Start time:	09:46:08
Start date:	03/08/2021
Path:	C:\Users\user\Desktop\ftyaXQevlQ.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\ftyaXQevlQ.exe'
Imagebase:	0x400000
File size:	114688 bytes
MD5 hash:	7A90C8F725811E53A27ECB8E2C6A952B
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Yara matches:	Rule: JoeSecurity_GuLoader_2, Description: Yara detected GuLoader, Source: 00000000.00000002.1173739995.00000000020F0000.00000040.00000001.sdmp, Author: Joe Security
Reputation:	low

Disassembly

Code Analysis

Reset < >

Description:	Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges. Process injection is a method of executing arbitrary code in the address space of a separate live process. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via process injection may also evade detection from security products since the execution is masked under a legitimate process.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	API monitoring, DLL monitoring, File monitoring, Named Pipes, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may perform software packing or virtual machine software protection to conceal their code. Software packing is a method of compressing or encrypting an executable. Packing an executable changes the file signature in an attempt to avoid signature-based detection. Most decompression techniques decompress the executable code in memory. Virtual machine software protection translates an executable's original code into a special format that only a special virtual machine can run. A virtual machine is then called to run this code.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata
Platforms:	macOS, 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 attempt to get information about running processes on a system. Information obtained could be used to gain an understanding of common software/applications running on systems within the network. Adversaries may use the information from Process 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:	API 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 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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Windows Analysis Report ftyaXQevlQ.exe

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Threatname: GuLoader

Yara Overview

Memory Dumps

Sigma Overview

Jbx Signature Overview

AV Detection:

Compliance:

Networking:

System Summary:

Data Obfuscation:

Hooking and other Techniques for Hiding and Protection:

Malware Analysis System Evasion:

Anti Debugging:

HIPS / PFW / Operating System Protection Evasion:

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

Contacted IPs

General Information

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASN

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Static PE Info

General

Entrypoint Preview

Data Directories

Sections

Resources

Imports

Version Infos

Possible Origin

Network Behavior

Code Manipulations

Statistics

System Behavior

Analysis Process: ftyaXQevlQ.exe PID: 6588 Parent PID: 5908

General

Disassembly

Code Analysis