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Analysis Report d81yNmZHaE.exe

Overview

General Information

Sample Name:	d81yNmZHaE.exe
Analysis ID:	432593
MD5:	74b1969d9f41c94a1a07431b65bbf390
SHA1:	54935d5f7a59384ba8d1b26e25bbbc394e91922a
SHA256:	f50e2cbd23d058c6f0b1b147c1ee77ccd969b9f895375aed3c42ccbab0bbbe15
Tags:	exeGuLoader
Infos:
Most interesting Screenshot:

Detection

GuLoader

Score:	88
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Found malware configuration

Multi AV Scanner detection for submitted file

Potential malicious icon found

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)

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 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

d81yNmZHaE.exe (PID: 5416 cmdline: 'C:\Users\user\Desktop\d81yNmZHaE.exe' MD5: 74B1969D9F41C94A1A07431B65BBF390)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://genitoriborgosatollo.it/main/client_sOcehs220.bin, http://amandaduquenoy."}

Yara Overview

Initial Sample

Source	Rule	Description	Author	Strings
d81yNmZHaE.exe	JoeSecurity_GuLoader_1	Yara detected GuLoader	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000000.234240857.0000000000401000.00000020.00020000.sdmp	JoeSecurity_GuLoader_1	Yara detected GuLoader	Joe Security
00000000.00000002.760283199.0000000000401000.00000020.00020000.sdmp	JoeSecurity_GuLoader_1	Yara detected GuLoader	Joe Security

Unpacked PEs

Source	Rule	Description	Author	Strings
0.0.d81yNmZHaE.exe.400000.0.unpack	JoeSecurity_GuLoader_1	Yara detected GuLoader	Joe Security
0.2.d81yNmZHaE.exe.400000.0.unpack	JoeSecurity_GuLoader_1	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: 00000000.00000002.761203641.00000000022D0000.00000040.00000001.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "https://genitoriborgosatollo.it/main/client_sOcehs220.bin, http://amandaduquenoy."}

Multi AV Scanner detection for submitted file

Show sources

Source: d81yNmZHaE.exe	Virustotal: Detection: 33%			Perma Link
Source: d81yNmZHaE.exe	ReversingLabs: Detection: 39%

Source: d81yNmZHaE.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://genitoriborgosatollo.it/main/client_sOcehs220.bin, http://amandaduquenoy.

System Summary:

Potential malicious icon found

Show sources

Source: initial sample

Icon embedded in PE file: bad icon match: 20047c7c70f0e004

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

Process Stats: CPU usage > 98%

Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6827 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6A71 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6884 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D68C9 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6911 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6955 NtAllocateVirtualMemory,

Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_00401C10
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_004055DB
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6827
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3209
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D327D
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D334F
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D33BC
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D5040
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D512C
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D31AB
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D91DD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3624
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DB46C
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D36AD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D46A5
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA68D
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D46FD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA6D9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2702
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D1765
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA74C
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D47A9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA7BD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D47CF
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D346D
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DB46C
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D5471
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3451
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3531
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D65BD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6584
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DBA0B
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2A4A
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4A88
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4AF4
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4B81
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D88B9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6884
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D68C9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6911
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4969
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D6955
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D49EC
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4EC9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D1F7F
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3F94
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D1FE4
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4C25
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2C99
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2D32
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4D5C
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2DAD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4DB5

Source: d81yNmZHaE.exe

Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: d81yNmZHaE.exe, 00000000.00000002.760356186.0000000000424000.00000002.00020000.sdmp	Binary or memory string: OriginalFilenameBlver.exe vs d81yNmZHaE.exe
Source: d81yNmZHaE.exe, 00000000.00000002.761074940.00000000021F0000.00000002.00000001.sdmp	Binary or memory string: OriginalFilenameuser32j% vs d81yNmZHaE.exe
Source: d81yNmZHaE.exe	Binary or memory string: OriginalFilenameBlver.exe vs d81yNmZHaE.exe

Source: d81yNmZHaE.exe

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

Source: classification engine

Classification label: mal88.rans.troj.evad.winEXE@1/0@0/0

Source: d81yNmZHaE.exe

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

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

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

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

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

Source: d81yNmZHaE.exe	Virustotal: Detection: 33%
Source: d81yNmZHaE.exe	ReversingLabs: Detection: 39%

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match	File source: d81yNmZHaE.exe, type: SAMPLE
Source: Yara match	File source: 00000000.00000000.234240857.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.760283199.0000000000401000.00000020.00020000.sdmp, type: MEMORY
Source: Yara match	File source: 0.0.d81yNmZHaE.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match	File source: 0.2.d81yNmZHaE.exe.400000.0.unpack, type: UNPACKEDPE

Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_004030EE push dword ptr [ebp-44h]; ret
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_00408957 push ecx; retf
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_0040953D push es; retf
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D72B9 push ebx; iretd
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D0041 push cs; iretd
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D00C0 push cs; iretd
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D678D push cs; iretd
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D5A5A push ebp; retf

Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\d81yNmZHaE.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\d81yNmZHaE.exe	Code function: 0_2_022D6827 NtAllocateVirtualMemory,
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D31AB
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D46A5
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D46FD
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D2702
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D47A9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D47CF
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DBA0B
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4A88
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4AF4
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4B81
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D88B9
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4969
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D49EC
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D4C25

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

RDTSC instruction interceptor: First address: 00000000022D6127 second address: 00000000022D6127 instructions: 0x00000000 rdtsc 0x00000002 mov eax, 54424F80h 0x00000007 xor eax, BD2BBA67h 0x0000000c add eax, 30109B8Dh 0x00000011 sub eax, 197A9173h 0x00000016 cpuid 0x00000018 popad 0x00000019 call 00007F36F0AD3678h 0x0000001e lfence 0x00000021 mov edx, 99F040D7h 0x00000026 add edx, 65972F3Fh 0x0000002c xor edx, B7C92FC9h 0x00000032 xor edx, 37B05FCBh 0x00000038 mov edx, dword ptr [edx] 0x0000003a lfence 0x0000003d ret 0x0000003e sub edx, esi 0x00000040 ret 0x00000041 pop ecx 0x00000042 add edi, edx 0x00000044 dec ecx 0x00000045 cmp ecx, 00000000h 0x00000048 jne 00007F36F0AD3655h 0x0000004a mov dword ptr [ebp+00000249h], eax 0x00000050 mov eax, ecx 0x00000052 push eax 0x00000053 mov eax, dword ptr [ebp+00000249h] 0x00000059 call 00007F36F0AD3687h 0x0000005e call 00007F36F0AD3699h 0x00000063 lfence 0x00000066 mov edx, 99F040D7h 0x0000006b add edx, 65972F3Fh 0x00000071 xor edx, B7C92FC9h 0x00000077 xor edx, 37B05FCBh 0x0000007d mov edx, dword ptr [edx] 0x0000007f lfence 0x00000082 ret 0x00000083 mov esi, edx 0x00000085 pushad 0x00000086 rdtsc

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

Code function: 0_2_022D6827 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\d81yNmZHaE.exe

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

Source: C:\Users\user\Desktop\d81yNmZHaE.exe

Code function: 0_2_022D6827 rdtsc

Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D90E4 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D31AB mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA68D mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022DA6D9 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D9AC5 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3BBC mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\d81yNmZHaE.exe	Code function: 0_2_022D3F94 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: d81yNmZHaE.exe, 00000000.00000002.760833387.0000000000D80000.00000002.00000001.sdmp	Binary or memory string: Shell_TrayWnd
Source: d81yNmZHaE.exe, 00000000.00000002.760833387.0000000000D80000.00000002.00000001.sdmp	Binary or memory string: Progman
Source: d81yNmZHaE.exe, 00000000.00000002.760833387.0000000000D80000.00000002.00000001.sdmp	Binary or memory string: SProgram Managerl
Source: d81yNmZHaE.exe, 00000000.00000002.760833387.0000000000D80000.00000002.00000001.sdmp	Binary or memory string: Shell_TrayWnd,
Source: d81yNmZHaE.exe, 00000000.00000002.760833387.0000000000D80000.00000002.00000001.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	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	Process Injection1	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)	Obfuscated Files or Information1	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)	Binary Padding	NTDS	System Information Discovery21	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
d81yNmZHaE.exe	33%	Virustotal		Browse
d81yNmZHaE.exe	39%	ReversingLabs	Win32.Trojan.Jaik

Dropped Files

No Antivirus matches

Unpacked PE Files

No Antivirus matches

Domains

No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
https://genitoriborgosatollo.it/main/client_sOcehs220.bin, http://amandaduquenoy.	0%	Avira URL Cloud	safe

Domains and IPs

Contacted Domains

No contacted domains info

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
https://genitoriborgosatollo.it/main/client_sOcehs220.bin, http://amandaduquenoy.	true	Avira URL Cloud: safe	unknown

Contacted IPs

No contacted IP infos

General Information

Joe Sandbox Version:	32.0.0 Black Diamond
Analysis ID:	432593
Start date:	10.06.2021
Start time:	15:19:00
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 7m 33s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	d81yNmZHaE.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:	mal88.rans.troj.evad.winEXE@1/0@0/0
EGA Information:	Failed
HDC Information:	Successful, ratio: 1.4% (good quality ratio 0.3%) Quality average: 11.5% Quality standard deviation: 20.6%
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): taskhostw.exe, MpCmdRun.exe, SearchUI.exe, RuntimeBroker.exe, backgroundTaskHost.exe, audiodg.exe, BackgroundTransferHost.exe, HxTsr.exe, WMIADAP.exe, SgrmBroker.exe, conhost.exe, svchost.exe, wuapihost.exe Not all processes where analyzed, report is missing behavior information

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):	5.567506613853901
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:	d81yNmZHaE.exe
File size:	147456
MD5:	74b1969d9f41c94a1a07431b65bbf390
SHA1:	54935d5f7a59384ba8d1b26e25bbbc394e91922a
SHA256:	f50e2cbd23d058c6f0b1b147c1ee77ccd969b9f895375aed3c42ccbab0bbbe15
SHA512:	1f20e36948015e46dc30cc1b1aa7e03cb0c8586e045bfe02d0794b3306cb1ddbbf43b62c737d8a90b2db5ff5f85de9fa96af97e4e978f223fa9dc6a37ba9ad7c
SSDEEP:	1536:vMaIFFEMgx3vnWE7Hpm6IJNTcXmXSt4lYEQe3pyzBEkWKS:ExFQvWy8lxc14lwe3pyzyjKS
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.DU.....................0............... ....@................

File Icon


Icon Hash:	20047c7c70f0e004

Static PE Info

General
Entrypoint:	0x401c10
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:	0x5544D64E [Sat May 2 13:51:10 2015 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:	9b8686288ab82fdbf8ede30bc55c83b7

Entrypoint Preview

Instruction
push 00401FBCh
call 00007F36F0BC1175h
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 [eax], al
xchg eax, edi
xchg eax, esp
mov byte ptr [B6A34098h+esi*8], bh
pop ss
inc ebp
inc esp
sbb dword ptr [eax+0000004Dh], ebp
add byte ptr [eax], al
add byte ptr [ecx], al
add byte ptr [eax], al
add byte ptr [eax], al
add al, bh
call 00007F3755FE1371h
insb
insb
jns 00007F36F0BC11E3h
arpl word ptr [eax+65h], bp
jc 00007F36F0BC1182h
add ah, dh
jnl 00007F36F0BC1183h
add eax, dword ptr [eax]
add byte ptr [eax], al
add bh, bh
int3
xor dword ptr [eax], eax
subps xmm4, dqword ptr [esi+4Eh]
dec eax
pop eax
jnl 00007F36F0BC11B3h
inc esi
mov ch, 6Fh
jecxz 00007F36F0BC1102h
pop esi
and edx, esp
xlatb
out 06h, eax
lahf
js 00007F36F0BC1180h
pop ebp
inc ebx
inc ecx
cdq
jmp 00007F36F0BC11F7h
xchg byte ptr [eax], bl
test dword ptr [eax], AD4F3AC5h
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
cdq
add al, byte ptr [eax]
add byte ptr [edx+00h], cl
add byte ptr [eax], al
add byte ptr [eax], cl
add byte ptr [ecx+ebp*2+76h], cl
jc 00007F36F0BC11EBh
jnc 00007F36F0BC11F6h
xor al, byte ptr [eax]
or eax, 53000A01h
dec ebx
inc ecx
inc edx
inc ecx
inc edi

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x20a84	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x24000	0x938	.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	0x1c4	.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	0x20148	0x21000	False	0.350423177083	data	5.81715288276	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x22000	0x1250	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x24000	0x938	0x1000	False	0.16943359375	data	2.00254326763	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x24808	0x130	data
RT_ICON	0x24520	0x2e8	data
RT_ICON	0x243f8	0x128	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0x243c8	0x30	data
RT_VERSION	0x24150	0x278	data	English	United States

Imports

DLL

Import

MSVBVM60.DLL

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

Version Infos

Description	Data
Translation	0x0409 0x04b0
InternalName	Blver
FileVersion	1.00
CompanyName	Mortagage
Comments	Mortagage
ProductName	Mortagage
ProductVersion	1.00
FileDescription	Mortagage
OriginalFilename	Blver.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: d81yNmZHaE.exe PID: 5416 Parent PID: 5696

General

Start time:	15:19:54
Start date:	10/06/2021
Path:	C:\Users\user\Desktop\d81yNmZHaE.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\d81yNmZHaE.exe'
Imagebase:	0x400000
File size:	147456 bytes
MD5 hash:	74B1969D9F41C94A1A07431B65BBF390
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Yara matches:	Rule: JoeSecurity_GuLoader_1, Description: Yara detected GuLoader, Source: 00000000.00000000.234240857.0000000000401000.00000020.00020000.sdmp, Author: Joe Security Rule: JoeSecurity_GuLoader_1, Description: Yara detected GuLoader, Source: 00000000.00000002.760283199.0000000000401000.00000020.00020000.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 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

Loading ...

Warning!

Analysis Report d81yNmZHaE.exe

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Threatname: GuLoader

Yara Overview

Initial Sample

Memory Dumps

Unpacked PEs

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 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: d81yNmZHaE.exe PID: 5416 Parent PID: 5696

General

Disassembly

Code Analysis