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Analysis Report OPDATERINGSDISKETTES.exe

Overview

General Information

Sample Name:	OPDATERINGSDISKETTES.exe
Analysis ID:	357952
MD5:	446701e67dd00e1d2c45b23263533dea
SHA1:	1acbd6fae421f3cc96e757138c9af9e4fc5b5d3a
SHA256:	2414764b6c9385725e8ad59646c7af513fe3cd1bdd0de671dea8dc04ba4c6fe3
Tags:	exeGuLoader
Infos:
Most interesting Screenshot:

Detection

GuLoader

Score:	84
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Multi AV Scanner detection for submitted file

Yara detected GuLoader

Contains functionality to detect hardware virtualization (CPUID execution measurement)

Detected RDTSC dummy instruction sequence (likely for instruction hammering)

Found potential dummy code loops (likely to delay analysis)

Hides threads from debuggers

Tries to detect Any.run

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to detect virtualization through RDTSC time measurements

Abnormal high CPU Usage

Checks if the current process is being debugged

Contains functionality for execution timing, often used to detect debuggers

Contains functionality to read the PEB

Creates a process in suspended mode (likely to inject code)

Detected potential crypto function

Program does not show much activity (idle)

Sample execution stops while process was sleeping (likely an evasion)

Tries to load missing DLLs

Uses 32bit PE files

Uses code obfuscation techniques (call, push, ret)

Classification

Startup

System is w10x64

OPDATERINGSDISKETTES.exe (PID: 4316 cmdline: 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe' MD5: 446701E67DD00E1D2C45B23263533DEA)

RegAsm.exe (PID: 1948 cmdline: 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe' MD5: 6FD7592411112729BF6B1F2F6C34899F)

conhost.exe (PID: 5788 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)

cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

Source	Rule	Description	Author	Strings
Process Memory Space: RegAsm.exe PID: 1948	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:

Multi AV Scanner detection for submitted file

Show sources

Source: OPDATERINGSDISKETTES.exe	Virustotal: Detection: 21%			Perma Link
Source: OPDATERINGSDISKETTES.exe	ReversingLabs: Detection: 10%

Compliance:

Uses 32bit PE files

Show sources

Source: OPDATERINGSDISKETTES.exe

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

System Summary:

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Process Stats: CPU usage > 98%
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Process Stats: CPU usage > 98%

Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_00402029
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_00401A29
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_004019DC
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_004017E9

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Section loaded: sfc.dll

Source: OPDATERINGSDISKETTES.exe

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

Source: classification engine

Classification label: mal84.troj.evad.winEXE@4/0@0/0

Source: C:\Windows\System32\conhost.exe

Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:5788:120:WilError_01

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

File created: C:\Users\user\AppData\Local\Temp\~DFA3B2BCDEB5667DD5.TMP

Jump to behavior

Source: OPDATERINGSDISKETTES.exe

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

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

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

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

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

Source: OPDATERINGSDISKETTES.exe	Virustotal: Detection: 21%
Source: OPDATERINGSDISKETTES.exe	ReversingLabs: Detection: 10%

Source: unknown	Process created: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'
Source: unknown	Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'
Source: unknown	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'

Source: Window Recorder

Window detected: More than 3 window changes detected

Data Obfuscation:

Yara detected GuLoader

Show sources

Source: Yara match

File source: Process Memory Space: RegAsm.exe PID: 1948, type: MEMORY

Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_00405D44 push ebx; iretd
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_0040BF54 push edi; retn 0004h
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_00403D0E push ds; retf
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_00406BF3 push ebx; retf
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Code function: 0_2_0040B1BD push edi; retn 0004h
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B009AD push ss; retf
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B02907 pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B00B83 push ss; retf
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B005B3 pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B0050D pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B0068F pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B03ECD pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B0060F pushfd ; iretd
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B00707 pushfd ; iretd

Hooking and other Techniques for Hiding and Protection:

Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	Process information set: NOOPENFILEERRORBOX
Source: C:\Windows\System32\conhost.exe	Process information set: NOOPENFILEERRORBOX

Malware Analysis System Evasion:

Contains functionality to detect hardware virtualization (CPUID execution measurement)

Show sources

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Code function: 14_2_00B013F1

Detected RDTSC dummy instruction sequence (likely for instruction hammering)

Show sources

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

RDTSC instruction interceptor: First address: 0000000000622878 second address: 0000000000622878 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007FA66039AC58h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e add edi, edx 0x00000020 dec ecx 0x00000021 test esi, 5AFA4577h 0x00000027 cmp ecx, 00000000h 0x0000002a jne 00007FA66039AC3Ah 0x0000002c push ecx 0x0000002d test ch, 00000041h 0x00000030 call 00007FA66039AC6Dh 0x00000035 call 00007FA66039AC68h 0x0000003a lfence 0x0000003d mov edx, dword ptr [7FFE0014h] 0x00000043 lfence 0x00000046 ret 0x00000047 mov esi, edx 0x00000049 pushad 0x0000004a rdtsc

Tries to detect Any.run

Show sources

Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	File opened: C:\Program Files\Qemu-ga\qemu-ga.exe
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	File opened: C:\Program Files\qga\qga.exe

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Show sources

Source: RegAsm.exe

Binary or memory string: C:\PROGRAM FILES\QEMU-GA\QEMU-GA.EXE

Tries to detect virtualization through RDTSC time measurements

Show sources

Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	RDTSC instruction interceptor: First address: 0000000000622878 second address: 0000000000622878 instructions: 0x00000000 rdtsc 0x00000002 xor eax, eax 0x00000004 inc eax 0x00000005 cpuid 0x00000007 popad 0x00000008 call 00007FA66039AC58h 0x0000000d lfence 0x00000010 mov edx, dword ptr [7FFE0014h] 0x00000016 lfence 0x00000019 ret 0x0000001a sub edx, esi 0x0000001c ret 0x0000001d pop ecx 0x0000001e add edi, edx 0x00000020 dec ecx 0x00000021 test esi, 5AFA4577h 0x00000027 cmp ecx, 00000000h 0x0000002a jne 00007FA66039AC3Ah 0x0000002c push ecx 0x0000002d test ch, 00000041h 0x00000030 call 00007FA66039AC6Dh 0x00000035 call 00007FA66039AC68h 0x0000003a lfence 0x0000003d mov edx, dword ptr [7FFE0014h] 0x00000043 lfence 0x00000046 ret 0x00000047 mov esi, edx 0x00000049 pushad 0x0000004a rdtsc
Source: C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe	RDTSC instruction interceptor: First address: 0000000000622A2D second address: 0000000000622A2D instructions: 0x00000000 rdtsc 0x00000002 lfence 0x00000005 shl edx, 20h 0x00000008 or edx, eax 0x0000000a ret 0x0000000b mov esi, edx 0x0000000d pushad 0x0000000e xor eax, eax 0x00000010 inc eax 0x00000011 cpuid 0x00000013 bt ecx, 1Fh 0x00000017 jc 00007FA660B0C492h 0x0000001d popad 0x0000001e call 00007FA660B0A08Dh 0x00000023 lfence 0x00000026 rdtsc

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Code function: 14_2_00B018B7 rdtsc

Source: all processes

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

Source: C:\Windows\System32\conhost.exe

Last function: Thread delayed

Source: RegAsm.exe

Binary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe

Anti Debugging:

Found potential dummy code loops (likely to delay analysis)

Show sources

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

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

Hides threads from debuggers

Show sources

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

Thread information set: HideFromDebugger

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

Process queried: DebugPort

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Code function: 14_2_00B018B7 rdtsc

Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B051AB mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B051DF mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B01AF3 mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B04ACA mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B013F1 mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B044BF mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B04498 mov eax, dword ptr fs:[00000030h]
Source: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe	Code function: 14_2_00B0272D mov eax, dword ptr fs:[00000030h]

Source: all processes

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

HIPS / PFW / Operating System Protection Evasion:

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

Process created: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe 'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'

Source: OPDATERINGSDISKETTES.exe, 00000000.00000002.471694785.0000000000CC0000.00000002.00000001.sdmp, RegAsm.exe, 0000000E.00000002.470676447.0000000001360000.00000002.00000001.sdmp	Binary or memory string: Program Manager
Source: OPDATERINGSDISKETTES.exe, 00000000.00000002.471694785.0000000000CC0000.00000002.00000001.sdmp, RegAsm.exe, 0000000E.00000002.470676447.0000000001360000.00000002.00000001.sdmp	Binary or memory string: Shell_TrayWnd
Source: OPDATERINGSDISKETTES.exe, 00000000.00000002.471694785.0000000000CC0000.00000002.00000001.sdmp, RegAsm.exe, 0000000E.00000002.470676447.0000000001360000.00000002.00000001.sdmp	Binary or memory string: Progman
Source: OPDATERINGSDISKETTES.exe, 00000000.00000002.471694785.0000000000CC0000.00000002.00000001.sdmp, RegAsm.exe, 0000000E.00000002.470676447.0000000001360000.00000002.00000001.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	DLL Side-Loading1	Process Injection12	Virtualization/Sandbox Evasion311	OS Credential Dumping	Security Software Discovery721	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	DLL Side-Loading1	Process Injection12	LSASS Memory	Virtualization/Sandbox Evasion311	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)	DLL Side-Loading1	Security Account Manager	Process Discovery1	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	Obfuscated Files or Information1	NTDS	System Information Discovery31	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
OPDATERINGSDISKETTES.exe	21%	Virustotal		Browse
OPDATERINGSDISKETTES.exe	11%	ReversingLabs	Win32.Worm.Wbvb

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:	357952
Start date:	25.02.2021
Start time:	01:14:59
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 5m 21s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	OPDATERINGSDISKETTES.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:	23
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled HDC enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Detection:	MAL
Classification:	mal84.troj.evad.winEXE@4/0@0/0
EGA Information:	Failed
HDC Information:	Successful, ratio: 94% (good quality ratio 56%) Quality average: 40.7% Quality standard deviation: 38%
HCA Information:	Failed
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .exe
Warnings:	Show All Exclude process from analysis (whitelisted): taskhostw.exe, MpCmdRun.exe, BackgroundTransferHost.exe, RuntimeBroker.exe, backgroundTaskHost.exe, SgrmBroker.exe, conhost.exe, svchost.exe, UsoClient.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):	5.4029031708300606
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:	OPDATERINGSDISKETTES.exe
File size:	73728
MD5:	446701e67dd00e1d2c45b23263533dea
SHA1:	1acbd6fae421f3cc96e757138c9af9e4fc5b5d3a
SHA256:	2414764b6c9385725e8ad59646c7af513fe3cd1bdd0de671dea8dc04ba4c6fe3
SHA512:	fccf60e2acc13f6be8f9bb5644bc5d7f6e62a39ff08ec6d75c6016677924cf91cf26be59f7952a16bfb7c750f083225ba26034cf8660aa5f5e0651059a8496e6
SSDEEP:	768:wxXFBWlBwBU0nTS1VCJlXcbkA+Lx6yPqPJ5QQmpgae3D5sRkMCX:SXTSwt21Vm1AMx6yPYJ5QQQgae3DsCX
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......O.......................D.......=.......Rich............PE..L...kg.O.....................0....................@................

File Icon


Icon Hash:	b038b57269717938

Static PE Info

General
Entrypoint:	0x401394
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:	0x4F81676B [Sun Apr 8 10:24:43 2012 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:	f783b7553c2ee07b6bd756ebd3705f2c

Entrypoint Preview

Instruction
push 0040A6E0h
call 00007FA66089B4D5h
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
loopne 00007FA66089B554h
mov al, 16h
add byte ptr [718C4333h], dl
dec edx
sbb dword ptr [edx+00FCBB1Ah], ecx
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], al
add byte ptr [eax], al
add byte ptr [ebp+esi*2+6Ch], dl
popad
jnc 00007FA66089B54Bh
add byte ptr [eax], al
add byte ptr [eax], al
add byte ptr [eax], al
dec esp
xor dword ptr [eax], eax
or dl, dh
cmp al, C2h
jle 00007FA66089B50Fh
mov ah, 7Eh
inc ecx
mov ebx, dword ptr [eax+24088438h]
in al, dx
and al, A6h
mov esp, 2BED4657h
dec eax
sbb byte ptr [ecx], 00000074h
std
in al, 88h
pop edi
popad
cmp cl, byte ptr [edi-53h]
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
push ebx
xchg eax, edx
add byte ptr [eax], al
push es
or al, 00h
add byte ptr [eax], al
pop es
add byte ptr [eax+6Fh], dl
jne 00007FA66089B555h
jnc 00007FA66089B54Bh
add byte ptr [67000701h], cl
jnc 00007FA66089B549h
jc 00007FA66089B555h
add byte ptr [ecx], bl
add dword ptr [eax], eax
inc edx
add byte ptr [edx], ah
add byte ptr [ebx], ah

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IMPORT	0xee94	0x28	.text
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x12000	0xf76	.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	0x11c	.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	0xe388	0xf000	False	0.380240885417	data	5.87430872386	IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
.data	0x10000	0x1210	0x1000	False	0.00634765625	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_WRITE, IMAGE_SCN_MEM_READ
.rsrc	0x12000	0xf76	0x1000	False	0.32861328125	data	3.68519752402	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ

Resources

Name	RVA	Size	Type	Language	Country
RT_ICON	0x12c8e	0x2e8	data
RT_ICON	0x123e6	0x8a8	data
RT_GROUP_ICON	0x123c4	0x22	data
RT_VERSION	0x12120	0x2a4	data	English	United States

Imports

DLL

Import

MSVBVM60.DLL

_CIcos, _adj_fptan, __vbaVarMove, __vbaHresultCheck, __vbaFreeVar, __vbaStrVarMove, __vbaLenBstr, __vbaFreeVarList, _adj_fdiv_m64, __vbaFreeObjList, _adj_fprem1, __vbaStrCat, __vbaSetSystemError, __vbaLenBstrB, __vbaHresultCheckObj, _adj_fdiv_m32, __vbaObjSet, _adj_fdiv_m16i, _adj_fdivr_m16i, _CIsin, __vbaChkstk, EVENT_SINK_AddRef, __vbaStrCmp, DllFunctionCall, _adj_fpatan, __vbaLateIdCallLd, EVENT_SINK_Release, _CIsqrt, EVENT_SINK_QueryInterface, __vbaExceptHandler, __vbaStrToUnicode, _adj_fprem, _adj_fdivr_m64, __vbaFPException, __vbaStrVarVal, _CIlog, __vbaErrorOverflow, __vbaNew2, __vbaR8Str, _adj_fdiv_m32i, _adj_fdivr_m32i, __vbaStrCopy, __vbaFreeStrList, _adj_fdivr_m32, _adj_fdiv_r, __vbaVarTstNe, __vbaI4Var, __vbaVarAdd, __vbaStrToAnsi, __vbaVarDup, _CIatan, __vbaStrMove, _allmul, _CItan, _CIexp, __vbaFreeStr, __vbaFreeObj

Version Infos

Description	Data
Translation	0x0409 0x04b0
InternalName	OPDATERINGSDISKETTES
FileVersion	1.00
CompanyName	Wang
ProductName	Wang Laboratories
ProductVersion	1.00
FileDescription	Wang Laboratories
OriginalFilename	OPDATERINGSDISKETTES.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

Behavior

Click to jump to process

System Behavior

Analysis Process: OPDATERINGSDISKETTES.exe PID: 4316 Parent PID: 5636

General

Start time:	01:15:47
Start date:	25/02/2021
Path:	C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'
Imagebase:	0x400000
File size:	73728 bytes
MD5 hash:	446701E67DD00E1D2C45B23263533DEA
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	Visual Basic
Reputation:	low

Analysis Process: RegAsm.exe PID: 1948 Parent PID: 4316

General

Start time:	01:17:03
Start date:	25/02/2021
Path:	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
Wow64 process (32bit):	true
Commandline:	'C:\Users\user\Desktop\OPDATERINGSDISKETTES.exe'
Imagebase:	0x690000
File size:	64616 bytes
MD5 hash:	6FD7592411112729BF6B1F2F6C34899F
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high

Analysis Process: conhost.exe PID: 5788 Parent PID: 1948

General

Start time:	01:17:04
Start date:	25/02/2021
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff6b2800000
File size:	625664 bytes
MD5 hash:	EA777DEEA782E8B4D7C7C33BBF8A4496
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high

Disassembly

Code Analysis

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Description:	Adversaries may execute their own malicious payloads by hijacking the library manifest used to load DLLs. Adversaries may take advantage of vague references in the library manifest of a program by replacing a legitimate library with a malicious one, causing the operating system to load their malicious library when it is called for by the victim program.
Tactics:	Defense Evasion, Persistence, Privilege Escalation
Data Sources:	Loaded DLLs, Process monitoring, Process use of network
Platforms:	Windows
Url:	Open detailed description by Mitre

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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Analysis Report OPDATERINGSDISKETTES.exe

Overview

General Information

Detection

Signatures

Classification

Startup

Malware Configuration

Yara Overview

Memory Dumps

Sigma Overview

Signature Overview

AV Detection:

Compliance:

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

Behavior

System Behavior

Analysis Process: OPDATERINGSDISKETTES.exe PID: 4316 Parent PID: 5636

General

Analysis Process: RegAsm.exe PID: 1948 Parent PID: 4316

General

Analysis Process: conhost.exe PID: 5788 Parent PID: 1948

General

Disassembly

Code Analysis