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Analysis Report VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Overview

General Information

Sample Name:	VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Analysis ID:	395503
MD5:	b1b0e80b7df8ae67ed83e366f46b265b
SHA1:	53c2f6377d7cc97ccb2c718eeabbf16e00830656
SHA256:	ec455e6dcab1f953bd685bc9674dbe7e2fbf7afcbef4d731edd9a818048f2227
Infos:
Most interesting Screenshot:

Detection

GuLoader

Score:	76
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

Machine Learning detection for sample

Tries to detect virtualization through RDTSC time measurements

PE file contains an invalid checksum

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

Startup

System is w10x64

VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe (PID: 5476 cmdline: 'C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe' MD5: B1B0E80B7DF8AE67ED83E366F46B265B)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://drive.google.com/uc?export=download&id=1eFQiCYQnU0gxJtdFGliDTfHvfIG3lmKt", "Injection Process": ["RegAsm.exe", "RegSvcs.exe", "MSBuild.exe"]}

Yara Overview

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000002.810709106.0000000000580000.00000040.00000001.sdmp	JoeSecurity_GuLoader	Yara detected GuLoader	Joe Security

Sigma Overview

No Sigma rule has matched

Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Found malware configuration

Show sources

Source: 00000000.00000002.810709106.0000000000580000.00000040.00000001.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "https://drive.google.com/uc?export=download&id=1eFQiCYQnU0gxJtdFGliDTfHvfIG3lmKt", "Injection Process": ["RegAsm.exe", "RegSvcs.exe", "MSBuild.exe"]}

Multi AV Scanner detection for submitted file

Show sources

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Virustotal: Detection: 20%			Perma Link
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	ReversingLabs: Detection: 19%

Machine Learning detection for sample

Show sources

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Joe Sandbox ML: detected

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.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: https://drive.google.com/uc?export=download&id=1eFQiCYQnU0gxJtdFGliDTfHvfIG3lmKt

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815929680.0000000002B50000.00000002.00000001.sdmp	Binary or memory string: OriginalFilenamewdmaud.drv.muij% vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.810433195.0000000000423000.00000002.00020000.sdmp	Binary or memory string: OriginalFilenameVitiations3.exe vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2X vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignalC vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignal vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignalN vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignal' vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignalI vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignal" vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.815804111.0000000002A20000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenameVitiations3.exeFE2XSoftSignalT vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.812873484.00000000021F0000.00000002.00000001.sdmp	Binary or memory string: OriginalFilenameuser32j% vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Binary or memory string: OriginalFilenameVitiations3.exe vs VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

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

Source: classification engine

Classification label: mal76.troj.evad.winEXE@1/0@0/0

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

File created: C:\Users\user~1\AppData\Local\Temp\~DF84F0FE996D23CFC0.TMP

Jump to behavior

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

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

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

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

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

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

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Virustotal: Detection: 20%
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	ReversingLabs: Detection: 19%

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match

File source: 00000000.00000002.810709106.0000000000580000.00000040.00000001.sdmp, type: MEMORY

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Static PE information: real checksum: 0x30b8d should be: 0x33065

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_0040445E push edi; iretd
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_0040527C push edx; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004052E0 push esi; retf
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004032EE push edx; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_00405296 push edx; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_00401CA1 push ss; retf 0000h
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_00406757 push esi; iretd
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_00403575 push 00000034h; retf
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004067D4 push esi; iretd
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004039D6 push edx; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004035D8 push eax; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_00403F85 push ebp; ret
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Code function: 0_2_004067A1 push esi; iretd

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	Process information set: NOOPENFILEERRORBOX

Malware Analysis System Evasion:

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	RDTSC instruction interceptor: First address: 000000000040A029 second address: 000000000040A029 instructions: 0x00000000 rdtsc 0x00000002 cmp ebx, 000000E4h 0x00000008 cmp eax, 000000A2h 0x0000000d cmp eax, 3Ch 0x00000010 cmp eax, 79h 0x00000013 cmp ebx, 0Bh 0x00000016 wait 0x00000017 fnclex 0x00000019 punpckldq xmm2, xmm3 0x0000001d paddsb mm0, mm4 0x00000020 punpcklwd mm0, mm4 0x00000023 punpckldq mm0, mm1 0x00000026 packuswb xmm5, xmm2 0x0000002a jmp 00007F45D4A1BDBBh 0x0000002c cmp eax, 3Fh 0x0000002f cmp ebx, 6Eh 0x00000032 cmp ebx, 00000096h 0x00000038 cmp edi, 002EAFF4h 0x0000003e movd mm1, ebx 0x00000041 movd mm1, ebx 0x00000044 movd mm1, ebx 0x00000047 movd mm1, ebx 0x0000004a jne 00007F45D4A1BC1Fh 0x00000050 inc edi 0x00000051 cmp eax, 47h 0x00000054 cmp ebx, 000000CDh 0x0000005a cmp ebx, 000000A7h 0x00000060 cmp eax, 000000DDh 0x00000065 cmp ebx, 36h 0x00000068 cmp eax, 3Ch 0x0000006b cmp eax, 68h 0x0000006e fdiv st(0), st(0) 0x00000070 psubusb xmm6, xmm6 0x00000074 paddw xmm1, xmm4 0x00000078 fldl2t 0x0000007a por xmm6, xmm1 0x0000007e psubw mm2, mm6 0x00000081 por mm1, mm2 0x00000084 jmp 00007F45D4A1BDBBh 0x00000086 cmp ebx, 000000C1h 0x0000008c cmp ebx, 000000AEh 0x00000092 cmp eax, 5Bh 0x00000095 rdtsc
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	RDTSC instruction interceptor: First address: 00000000005863AE second address: 00000000005833A8 instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 test bh, ch 0x00000005 ret 0x00000006 cmp dh, bh 0x00000008 test dl, FFFFFFC4h 0x0000000b call 00007F45D4CE1CB1h 0x00000010 cmp eax, ecx 0x00000012 call 00007F45D4CDECB7h 0x00000017 test ah, bh 0x00000019 cmp cl, cl 0x0000001b cmp ch, bh 0x0000001d xor edi, edi 0x0000001f test ax, dx 0x00000022 mov ecx, 00A95F60h 0x00000027 test di, 3043h 0x0000002c push ecx 0x0000002d jmp 00007F45D4CDEDEAh 0x0000002f cmp dx, bx 0x00000032 call 00007F45D4CDEE1Bh 0x00000037 call 00007F45D4CDEE04h 0x0000003c lfence 0x0000003f mov edx, dword ptr [7FFE0014h] 0x00000045 lfence 0x00000048 ret 0x00000049 mov esi, edx 0x0000004b pushad 0x0000004c rdtsc
Source: C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	RDTSC instruction interceptor: First address: 00000000005833A8 second address: 00000000005833A8 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007F45D4A1BD84h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d cmp dl, bl 0x0000001f pop ecx 0x00000020 test ax, dx 0x00000023 test edx, ebx 0x00000025 add edi, edx 0x00000027 cmp ch, FFFFFFA4h 0x0000002a dec ecx 0x0000002b nop 0x0000002c cmp ecx, 00000000h 0x0000002f jne 00007F45D4A1BD2Bh 0x00000031 push ecx 0x00000032 jmp 00007F45D4A1BD7Ah 0x00000034 cmp dx, bx 0x00000037 call 00007F45D4A1BDABh 0x0000003c call 00007F45D4A1BD94h 0x00000041 lfence 0x00000044 mov edx, dword ptr [7FFE0014h] 0x0000004a lfence 0x0000004d ret 0x0000004e mov esi, edx 0x00000050 pushad 0x00000051 rdtsc

Source: all processes

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

Source: all processes

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

Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.812567759.0000000000DA0000.00000002.00000001.sdmp	Binary or memory string: uProgram Manager
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.812567759.0000000000DA0000.00000002.00000001.sdmp	Binary or memory string: Shell_TrayWnd
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.812567759.0000000000DA0000.00000002.00000001.sdmp	Binary or memory string: Progman
Source: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe, 00000000.00000002.812567759.0000000000DA0000.00000002.00000001.sdmp	Binary or memory string: Progmanlock

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	Process Injection1	OS Credential Dumping	Security Software Discovery1	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	Application Layer Protocol1	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	Obfuscated Files or Information1	LSASS Memory	Process Discovery1	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Junk Data	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	System Information Discovery11	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

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	Link
VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	21%	Virustotal	Browse
VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	19%	ReversingLabs
VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe	100%	Joe Sandbox ML

Dropped Files

No Antivirus matches

Unpacked PE Files

No Antivirus matches

Domains

No Antivirus matches

URLs

No Antivirus matches

Domains and IPs

Contacted Domains

No contacted domains info

Contacted IPs

No contacted IP infos

General Information

Joe Sandbox Version:	31.0.0 Emerald
Analysis ID:	395503
Start date:	22.04.2021
Start time:	15:54:49
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 9m 9s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.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:	mal76.troj.evad.winEXE@1/0@0/0
EGA Information:	Successful, ratio: 100%
HDC Information:	Successful, ratio: 84.7% (good quality ratio 51.2%) Quality average: 37.5% Quality standard deviation: 33.8%
HCA Information:	Successful, ratio: 100% Number of executed functions: 0 Number of non-executed functions: 0
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .exe
Warnings:	Show All Behavior information exceeds normal sizes, reducing to normal. Report will have missing behavior information. Exclude process from analysis (whitelisted): taskhostw.exe, MpCmdRun.exe, audiodg.exe, BackgroundTransferHost.exe, WMIADAP.exe, SgrmBroker.exe, backgroundTaskHost.exe, conhost.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):	5.862205071482885
TrID:	Win32 Executable (generic) a (10002005/4) 99.15% Win32 Executable Microsoft Visual Basic 6 (82127/2) 0.81% 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:	VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
File size:	155648
MD5:	b1b0e80b7df8ae67ed83e366f46b265b
SHA1:	53c2f6377d7cc97ccb2c718eeabbf16e00830656
SHA256:	ec455e6dcab1f953bd685bc9674dbe7e2fbf7afcbef4d731edd9a818048f2227
SHA512:	e7262d9270796a6b815d6fd405b8b02db85b16531d1aa510a4976fa163722930f5006449d48d37ac57788bba0b218d2d26fa23917088dc6008a987f3f98688f7
SSDEEP:	3072:jLPrJP47wFh/t9iQ2rSjVffNeYWf7M/v3w:jJP47CRzdxNfv3
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...n.yW.....................`......x.............@................

File Icon


Icon Hash:	dadadadaeeced8da

Static PE Info

General
Entrypoint:	0x401c78
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:	0x5779156E [Sun Jul 3 13:38:54 2016 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:	1fa6aac839727b3340226df771ac8ef4

Entrypoint Preview

Instruction
push 0040FCB0h
call 00007F45D4F74625h
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
inc eax
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [edx], bl
sti
clc
mov dword ptr [bx], edx
jbe 00007F45D4F74678h
mov bh, 7Bh
ret
and byte ptr [esi], dl
retf 0000h
add byte ptr [eax], al
add byte ptr [eax], al
add dword ptr [eax], eax
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
push ebp
push 6F6D7261h
outsb
imul esp, dword ptr [ebp+72h], 0000656Eh
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
dec esp
xor dword ptr [eax], eax
push cs
sbb dh, bl
call far 9F42h : 1AEE2F58h
leave
xlatb
pop ds
fadd qword ptr [edi+584300E6h]
jc 00007F45D4F745CAh
xor al, D8h
push edi
inc edx
xchg eax, esi
and ecx, dword ptr [ebx-40B64F1Ch]
enter 4F3Ah, ADh
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

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x206b4	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x23000	0x3916	.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	0x174	.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	0x1fcf4	0x20000	False	0.36799621582	data	6.10209072911	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x21000	0x1254	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x23000	0x3916	0x4000	False	0.354858398438	data	5.2522569983	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x252ee	0x1628	dBase IV DBT of \200.DBF, blocks size 0, block length 4608, next free block index 40, next free block 4294901758, next used block 4294901758
RT_ICON	0x24246	0x10a8	data
RT_ICON	0x238be	0x988	data
RT_ICON	0x23456	0x468	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0x23418	0x3e	data
RT_VERSION	0x23180	0x298	data	English	United States

Imports

DLL

Import

MSVBVM60.DLL

_CIcos, _adj_fptan, __vbaVarMove, __vbaFreeVar, __vbaStrVarMove, __vbaFreeVarList, _adj_fdiv_m64, __vbaFreeObjList, _adj_fprem1, __vbaRecAnsiToUni, __vbaSetSystemError, __vbaHresultCheckObj, _adj_fdiv_m32, __vbaAryDestruct, __vbaObjSet, __vbaOnError, _adj_fdiv_m16i, __vbaObjSetAddref, _adj_fdivr_m16i, __vbaFPFix, __vbaFpR8, __vbaVarTstLt, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, __vbaGenerateBoundsError, __vbaAryConstruct2, __vbaObjVar, __vbaI2I4, DllFunctionCall, _adj_fpatan, __vbaLateIdCallLd, __vbaRedim, __vbaRecUniToAnsi, EVENT_SINK_Release, __vbaUI1I2, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, __vbaStrToUnicode, _adj_fprem, _adj_fdivr_m64, __vbaVarErrI4, __vbaFPException, _CIlog, __vbaNew2, __vbaR8Str, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaStrCopy, __vbaFreeStrList, __vbaDerefAry1, _adj_fdivr_m32, _adj_fdiv_r, __vbaVarTstNe, __vbaI4Var, __vbaVarAdd, __vbaLateMemCall, __vbaStrToAnsi, __vbaVarDup, __vbaFpI4, __vbaLateMemCallLd, _CIatan, __vbaStrMove, __vbaCastObj, _allmul, __vbaLateIdSt, _CItan, _CIexp, __vbaFreeStr, __vbaFreeObj

Version Infos

Description	Data
Translation	0x0409 0x04b0
InternalName	Vitiations3
FileVersion	1.00
CompanyName	SoftSignal
Comments	SoftSignal
ProductName	SoftSignal
ProductVersion	1.00
FileDescription	SoftSignal
OriginalFilename	Vitiations3.exe

Possible Origin

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

Network Behavior

No network behavior found

Code Manipulations

Statistics

System Behavior

Analysis Process: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe PID: 5476 Parent PID: 5628

General

Start time:	15:55:41
Start date:	22/04/2021
Path:	C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe'
Imagebase:	0x7ff724940000
File size:	155648 bytes
MD5 hash:	B1B0E80B7DF8AE67ED83E366F46B265B
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Yara matches:	Rule: JoeSecurity_GuLoader, Description: Yara detected GuLoader, Source: 00000000.00000002.810709106.0000000000580000.00000040.00000001.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 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:	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

Loading ...

Warning!

Analysis Report VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe

Overview

General Information

Detection

Signatures

Classification

Startup

Malware Configuration

Threatname: GuLoader

Yara Overview

Memory Dumps

Sigma Overview

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:

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 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: VENTANASBRISA SL, COMPROBANTE DE TRANSFERENCIA PENDIENTE DE PAGO.exe PID: 5476 Parent PID: 5628

General

Disassembly

Code Analysis