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Windows Analysis Report 20211129.exe

Overview

General Information

Sample Name:	20211129.exe
Analysis ID:	532897
MD5:	672587fb175264ef8b45a2b0857f273f
SHA1:	ab7c2f5edf572d5b28d7da50f548d73d49f92b71
SHA256:	c00b66ef61df2012b269bca3e60b301478641292948f1cac579096603ad67f98
Tags:	exeguloadersigned
Infos:
Most interesting Screenshot:

Detection

GuLoader

Score:	80
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Found malware configuration

Potential malicious icon found

Multi AV Scanner detection for submitted file

Yara detected GuLoader

Tries to detect virtualization through RDTSC time measurements

C2 URLs / IPs found in malware configuration

Uses 32bit PE files

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

PE file contains strange resources

Contains functionality to read the PEB

Uses code obfuscation techniques (call, push, ret)

Detected potential crypto function

PE / OLE file has an invalid certificate

Contains functionality to call native functions

Contains functionality for execution timing, often used to detect debuggers

Abnormal high CPU Usage

Classification

Process Tree

System is w10x64

20211129.exe (PID: 456 cmdline: "C:\Users\user\Desktop\20211129.exe" MD5: 672587FB175264EF8B45A2B0857F273F)

cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://drive.google.com/uc?export=down"}

Yara Overview

Memory Dumps

Source	Rule	Description	Author	Strings
00000000.00000002.776543638.0000000002220000.00000040.00000001.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: 00000000.00000002.776543638.0000000002220000.00000040.00000001.sdmp

Malware Configuration Extractor: GuLoader {"Payload URL": "https://drive.google.com/uc?export=down"}

Multi AV Scanner detection for submitted file

Show sources

Source: 20211129.exe	Virustotal: Detection: 36%	Perma Link
Source: 20211129.exe	Metadefender: Detection: 21%	Perma Link
Source: 20211129.exe	ReversingLabs: Detection: 51%

Source: 20211129.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=down

Source: 20211129.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0
Source: 20211129.exe	String found in binary or memory: http://cacerts.digicert.com/DigiCertSHA2AssuredIDTimestampingCA.crt0
Source: 20211129.exe	String found in binary or memory: http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0P
Source: 20211129.exe	String found in binary or memory: http://crl3.digicert.com/sha2-assured-ts.crl02
Source: 20211129.exe	String found in binary or memory: http://crl4.digicert.com/DigiCertAssuredIDRootCA.crl0:
Source: 20211129.exe	String found in binary or memory: http://crl4.digicert.com/sha2-assured-ts.crl0
Source: 20211129.exe	String found in binary or memory: http://ocsp.digicert.com0C
Source: 20211129.exe	String found in binary or memory: http://ocsp.digicert.com0O
Source: 20211129.exe	String found in binary or memory: http://www.digicert.com/CPS0
Source: 20211129.exe	String found in binary or memory: https://www.digicert.com/CPS0

System Summary:

Potential malicious icon found

Show sources

Source: initial sample

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

Source: 20211129.exe

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

Source: 20211129.exe, 00000000.00000002.776768786.0000000002A40000.00000004.00000001.sdmp	Binary or memory string: OriginalFilenametofrontskrig.exeFE2XK vs 20211129.exe
Source: 20211129.exe, 00000000.00000000.245587033.0000000000425000.00000002.00020000.sdmp	Binary or memory string: OriginalFilenametofrontskrig.exe vs 20211129.exe
Source: 20211129.exe	Binary or memory string: OriginalFilenametofrontskrig.exe vs 20211129.exe

Source: 20211129.exe

Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST

Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02236BAF
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222D9D3
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222BC7B
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222E24E
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222525E
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022336B9
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02234E85
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022332ED
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022252EC
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222D568
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222C18D
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022205CC
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022343CC

Source: 20211129.exe

Static PE information: invalid certificate

Source: C:\Users\user\Desktop\20211129.exe

Code function: 0_2_0222D9D3 NtAllocateVirtualMemory,

Source: C:\Users\user\Desktop\20211129.exe

Process Stats: CPU usage > 98%

Source: 20211129.exe	Virustotal: Detection: 36%
Source: 20211129.exe	Metadefender: Detection: 21%
Source: 20211129.exe	ReversingLabs: Detection: 51%

Source: 20211129.exe

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

Source: C:\Users\user\Desktop\20211129.exe

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

Source: C:\Users\user\Desktop\20211129.exe

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

Source: C:\Users\user\Desktop\20211129.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{0D43FE01-F093-11CF-8940-00A0C9054228}\InprocServer32

Source: C:\Users\user\Desktop\20211129.exe

File created: C:\Users\user\AppData\Roaming\XvFu5flZcgudIlwvVLtjOx372

Jump to behavior

Source: classification engine

Classification label: mal80.rans.troj.evad.winEXE@1/0@0/0

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match

File source: 00000000.00000002.776543638.0000000002220000.00000040.00000001.sdmp, type: MEMORY

Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0040C11C pushfd ; iretd
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02222623 push FFFFFF81h; ret
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02225E26 push esp; iretd
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02222231 push ebx; retf
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02220039 pushfd ; retf
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02220C65 pushfd ; iretd
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02220052 pushfd ; retf
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02220052 pushfd ; retf
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222D2C5 push ecx; retf
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02224BBD push ss; ret
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02221B91 pushfd ; ret
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02222DCC push edi; iretd

Source: C:\Users\user\Desktop\20211129.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\20211129.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Users\user\Desktop\20211129.exe	Process information set: NOOPENFILEERRORBOX

Malware Analysis System Evasion:

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\20211129.exe

RDTSC instruction interceptor: First address: 000000000222CB10 second address: 000000000222CB10 instructions: 0x00000000 rdtsc 0x00000002 mov eax, C59FC429h 0x00000007 sub eax, C4E79C3Eh 0x0000000c add eax, 320FDAB5h 0x00000011 sub eax, 32C8029Fh 0x00000016 cpuid 0x00000018 popad 0x00000019 call 00007F487CD844D4h 0x0000001e lfence 0x00000021 mov edx, D1AF9544h 0x00000026 xor edx, 9043EC23h 0x0000002c sub edx, FB2A8C3Dh 0x00000032 xor edx, 393FED3Eh 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 mov dword ptr [ebp+0000020Ch], ecx 0x0000004b mov ecx, A02E6A25h 0x00000050 add ecx, 63038538h 0x00000056 xor ecx, 9592C6BAh 0x0000005c xor ecx, 96A329E7h 0x00000062 cmp dword ptr [ebp+0000020Ch], ecx 0x00000068 mov ecx, dword ptr [ebp+0000020Ch] 0x0000006e jne 00007F487CD843BFh 0x00000070 mov dword ptr [ebp+00000231h], eax 0x00000076 mov eax, ecx 0x00000078 push eax 0x00000079 mov eax, dword ptr [ebp+00000231h] 0x0000007f call 00007F487CD845FBh 0x00000084 call 00007F487CD844F5h 0x00000089 lfence 0x0000008c mov edx, D1AF9544h 0x00000091 xor edx, 9043EC23h 0x00000097 sub edx, FB2A8C3Dh 0x0000009d xor edx, 393FED3Eh 0x000000a3 mov edx, dword ptr [edx] 0x000000a5 lfence 0x000000a8 ret 0x000000a9 mov esi, edx 0x000000ab pushad 0x000000ac rdtsc

Source: C:\Users\user\Desktop\20211129.exe

Code function: 0_2_0222CB08 rdtsc

Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02234E85 mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_022332ED mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_0222C77D mov eax, dword ptr fs:[00000030h]
Source: C:\Users\user\Desktop\20211129.exe	Code function: 0_2_02232985 mov eax, dword ptr fs:[00000030h]

Source: C:\Users\user\Desktop\20211129.exe

Code function: 0_2_0222CB08 rdtsc

Source: C:\Users\user\Desktop\20211129.exe

Code function: 0_2_02236BAF RtlAddVectoredExceptionHandler,

Source: 20211129.exe, 00000000.00000002.775916702.0000000000D80000.00000002.00020000.sdmp	Binary or memory string: Shell_TrayWnd
Source: 20211129.exe, 00000000.00000002.775916702.0000000000D80000.00000002.00020000.sdmp	Binary or memory string: Progman
Source: 20211129.exe, 00000000.00000002.775916702.0000000000D80000.00000002.00020000.sdmp	Binary or memory string: SProgram Managerl
Source: 20211129.exe, 00000000.00000002.775916702.0000000000D80000.00000002.00020000.sdmp	Binary or memory string: Shell_TrayWnd,
Source: 20211129.exe, 00000000.00000002.775916702.0000000000D80000.00000002.00020000.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	Masquerading1	OS Credential Dumping	Security Software Discovery11	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	Process Discovery1	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	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	Label	Link
20211129.exe	37%	Virustotal		Browse
20211129.exe	22%	Metadefender		Browse
20211129.exe	51%	ReversingLabs	Win32.Trojan.GuLoader

Dropped Files

No Antivirus matches

Unpacked PE Files

Source	Detection	Scanner	Label	Link	Download
0.2.20211129.exe.400000.0.unpack	100%	Avira	HEUR/AGEN.1140082		Download File
0.0.20211129.exe.400000.0.unpack	100%	Avira	HEUR/AGEN.1140082		Download File

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:	34.0.0 Boulder Opal
Analysis ID:	532897
Start date:	02.12.2021
Start time:	19:35:10
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 7m 19s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	20211129.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:	mal80.rans.troj.evad.winEXE@1/0@0/0
EGA Information:	Failed
HDC Information:	Successful, ratio: 46.3% (good quality ratio 24.1%) Quality average: 32.2% Quality standard deviation: 34.6%
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): MpCmdRun.exe, dllhost.exe, audiodg.exe, WMIADAP.exe, SgrmBroker.exe, conhost.exe, backgroundTaskHost.exe, svchost.exe Excluded domains from analysis (whitelisted): fs.microsoft.com, ctldl.windowsupdate.com 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):	5.14253569878617
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:	20211129.exe
File size:	156816
MD5:	672587fb175264ef8b45a2b0857f273f
SHA1:	ab7c2f5edf572d5b28d7da50f548d73d49f92b71
SHA256:	c00b66ef61df2012b269bca3e60b301478641292948f1cac579096603ad67f98
SHA512:	67d7444cb44d8b9be7ed2301e64a2368ac21f370b98cbdcdcff895ad35d66e097372c3b50eb5906ef8acc942316a6fe117522988e433660989abaa9caed9076f
SSDEEP:	1536:BUHEm7YNXO6rJiEqawzLDnzf4YIOBFKrf2m6+TFy2rsm1uQBH:BgEm7c+wk7rLDBKH
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......O.......................D.......=.......Rich............PE..L...*D.X................. ...0...............0....@................

File Icon


Icon Hash:	20047c7c70f0e004

Static PE Info

General
Entrypoint:	0x401888
Entrypoint Section:	.text
Digitally signed:	true
Imagebase:	0x400000
Subsystem:	windows gui
Image File Characteristics:	LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
DLL Characteristics:
Time Stamp:	0x58F4442A [Mon Apr 17 04:27:22 2017 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:	b209c8634733456633136bfedc71877a

Authenticode Signature

Signature Valid:	false
Signature Issuer:	E=affaldsproblemernes@Sisi.tr, CN=Topmargenernes6, OU=Discoplacenta4, O=Pearlings4, L=Tryptone, S=Hydrencephalus4, C=CC
Signature Validation Error:	A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider
Error Number:	-2146762487
Not Before, Not After	12/1/2021 3:02:36 AM 12/1/2022 3:02:36 AM
Subject Chain	E=affaldsproblemernes@Sisi.tr, CN=Topmargenernes6, OU=Discoplacenta4, O=Pearlings4, L=Tryptone, S=Hydrencephalus4, C=CC
Version:	3
Thumbprint MD5:	A09281A46CB4122164B30FB05611CD3F
Thumbprint SHA-1:	75FB258FE049C5BD134BB76066831E5C0A29A387
Thumbprint SHA-256:	8502EA39172E6385A457D26EB0847AE9378028A76658050B270AB02D86DCDB01
Serial:	00

Entrypoint Preview

Instruction
push 004019B8h
call 00007F487C8CE475h
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
cmp byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
pop es
sahf
xor byte ptr [edx+ecx-42B8711Dh], ah
adc bl, ch
test al, 3Fh
inc esp
add ch, 00000000h
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [ecx], al
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax+eax], al
add byte ptr [eax], al
inc edx
push ebp
push edx
dec ecx
inc ecx
dec esp
add byte ptr [ebx], al
add byte ptr [eax], al
add byte ptr [eax], al
dec esp
xor dword ptr [eax], eax
add byte ptr [8DDC4E59h], dh
call far 6341h : 6083488Fh
jbe 00007F487C8CE424h
insb
in eax, 19h
cld
call 00007F485E15FFECh
dec esi
mov eax, 22D1BED9h
dec eax
cmp cl, 0000003Ah
dec edi
lodsd
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
dec esi
add byte ptr [eax], al
add byte ptr [ecx+00h], cl
add byte ptr [eax], al
add byte ptr [edi], al
add byte ptr [edi+55h], al
dec esp
dec esi
inc ecx
push edx
inc ebp
add byte ptr [53000B01h], cl
imul esi, dword ptr [edx+69h], 64h
outsb
jnc 00007F487C8CE4BAh
add byte ptr [ecx], bl
add dword ptr [eax], eax

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0x219c4	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x25000	0x970	.rsrc
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x0	0x0
IMAGE_DIRECTORY_ENTRY_SECURITY	0x25000	0x1490
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	0x234	.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	0x210b4	0x22000	False	0.360753676471	data	5.21959711886	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x23000	0x122c	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x25000	0x970	0x1000	False	0.174072265625	data	2.04745900646	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x25840	0x130	data
RT_ICON	0x25558	0x2e8	data
RT_ICON	0x25430	0x128	GLS_BINARY_LSB_FIRST
RT_GROUP_ICON	0x25400	0x30	data
RT_VERSION	0x25150	0x2b0	data	Chinese	Taiwan

Imports

DLL

Import

MSVBVM60.DLL

__vbaR8FixI4, _CIcos, _adj_fptan, __vbaHresultCheck, __vbaVarMove, __vbaStrI4, __vbaFreeVar, __vbaAryMove, __vbaStrVarMove, __vbaLenBstr, __vbaFreeVarList, __vbaVarIdiv, _adj_fdiv_m64, _adj_fprem1, __vbaStrCat, __vbaHresultCheckObj, __vbaLenBstrB, __vbaLenVar, _adj_fdiv_m32, __vbaAryDestruct, __vbaObjSet, __vbaOnError, _adj_fdiv_m16i, __vbaObjSetAddref, _adj_fdivr_m16i, __vbaFPFix, __vbaVarTstLt, __vbaFpR8, _CIsin, __vbaChkstk, __vbaFileClose, EVENT_SINK_AddRef, __vbaStrCmp, __vbaGet3, __vbaAryConstruct2, __vbaVarTstEq, __vbaObjVar, _adj_fpatan, __vbaRedim, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, _adj_fprem, _adj_fdivr_m64, __vbaFPException, __vbaStrVarVal, __vbaVarCat, _CIlog, __vbaFileOpen, __vbaNew2, __vbaVar2Vec, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaStrCopy, __vbaFreeStrList, _adj_fdivr_m32, _adj_fdiv_r, __vbaVarTstNe, __vbaI4Var, __vbaInStrB, __vbaVarDup, __vbaVarTstGe, __vbaFpI4, __vbaLateMemCallLd, _CIatan, __vbaStrMove, __vbaR8IntI4, _allmul, _CItan, _CIexp, __vbaFreeStr, __vbaFreeObj

Version Infos

Description	Data
Translation	0x0404 0x04b0
LegalCopyright	Union
InternalName	tofrontskrig
FileVersion	4.00
CompanyName	Union
LegalTrademarks	Union
ProductName	Union
ProductVersion	4.00
FileDescription	Union
OriginalFilename	tofrontskrig.exe

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: 20211129.exe PID: 456 Parent PID: 6016

General

Start time:	19:36:09
Start date:	02/12/2021
Path:	C:\Users\user\Desktop\20211129.exe
Wow64 process (32bit):	true
Commandline:	"C:\Users\user\Desktop\20211129.exe"
Imagebase:	0x400000
File size:	156816 bytes
MD5 hash:	672587FB175264EF8B45A2B0857F273F
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Yara matches:	Rule: JoeSecurity_GuLoader_2, Description: Yara detected GuLoader, Source: 00000000.00000002.776543638.0000000002220000.00000040.00000001.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 manipulate features of their artifacts to make them appear legitimate or benign to users and/or security tools. Masquerading occurs when the name or location of an object, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation. This may include manipulating file metadata, tricking users into misidentifying the file type, and giving legitimate task or service names.
Tactics:	Defense Evasion
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 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 20211129.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:

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

Authenticode Signature

Entrypoint Preview

Data Directories

Sections

Resources

Imports

Version Infos

Possible Origin

Network Behavior

Code Manipulations

Statistics

System Behavior

Analysis Process: 20211129.exe PID: 456 Parent PID: 6016

General

Disassembly

Code Analysis