Malware Analysis Report

2024-10-16 06:53

Sample ID 240616-yg89ysydnp
Target desync.exe
SHA256 81caa3adef4253955af7d8e935d6c6d3c3fb6134fdb9a37e46a3da4695136154
Tags
themida evasion trojan
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

81caa3adef4253955af7d8e935d6c6d3c3fb6134fdb9a37e46a3da4695136154

Threat Level: Likely malicious

The file desync.exe was found to be: Likely malicious.

Malicious Activity Summary

themida evasion trojan

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Checks computer location settings

Themida packer

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-16 19:46

Signatures

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 19:46

Reported

2024-06-16 19:49

Platform

win7-20240221-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\desync.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\desync.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\desync.exe

"C:\Users\Admin\AppData\Local\Temp\desync.exe"

Network

N/A

Files

memory/2012-0-0x000000013F5F0000-0x000000014080B000-memory.dmp

memory/2012-1-0x0000000077A40000-0x0000000077A42000-memory.dmp

memory/2012-4-0x000000013F5F0000-0x000000014080B000-memory.dmp

memory/2012-2-0x000000013F5F0000-0x000000014080B000-memory.dmp

memory/2012-3-0x000000013F5F0000-0x000000014080B000-memory.dmp

memory/2012-5-0x000000013F5F0000-0x000000014080B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-16 19:46

Reported

2024-06-16 19:49

Platform

win10v2004-20240508-en

Max time kernel

39s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\desync.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\desync.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\desync.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2456 wrote to memory of 3292 N/A C:\Users\Admin\AppData\Local\Temp\desync.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2456 wrote to memory of 3292 N/A C:\Users\Admin\AppData\Local\Temp\desync.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\desync.exe

"C:\Users\Admin\AppData\Local\Temp\desync.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" /C Get-Service -Name WpnUserService* | Restart-Service -Force

Network

Country Destination Domain Proto
US 8.8.8.8:53 comun.chairfbi.com udp
US 8.8.8.8:53 venom.nyc3.digitaloceanspaces.com udp

Files

memory/2456-0-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-1-0x00007FFF9AC10000-0x00007FFF9AC12000-memory.dmp

memory/2456-2-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-4-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-3-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-6-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-7-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-5-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hjbenymo.ibi.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3292-10-0x000001D35AFA0000-0x000001D35AFC2000-memory.dmp

memory/2456-22-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-23-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-25-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp

memory/2456-26-0x00007FF77FB30000-0x00007FF780D4B000-memory.dmp