85c912a1a16544cb7b3c6f11048f764c969e76b2ae7ec94773521869cd871860

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2024 10:22

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General

Target

Themida.v.3.1.8.0/Themida.exe
Size

30.1MB
MD5

ac042d817ab8b22903efe5168fdccd95
SHA1

a077b86df99fc2a88333c567a15885674aa65157
SHA256

eeee3378a756b15377c1443b32ad02ce743e4be1d802a21857b1b51ccefd8106
SHA512

152831fd4c40274723243a4df73321b2439add43b99c44f54949e3ccc83a202b2caa2fd5742eb5c5382de74df76f116c3ac352c4c04c648dbb7208558a1e8c54
SSDEEP

786432:xvamVvfX2eyQXWJChExZLEq9slLr4BnAMaW6fn/hO:x1OeyscCRn4e/hO

Score

9^/10

bootkit discovery evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

Themida.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Themida.exe

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Themida.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Themida.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Themida.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Themida.exe

Loads dropped DLL 1 IoCs

Processes:

Themida.exe

pid	Process
1848	Themida.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Themida.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Themida.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

Processes:

Themida.exe

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Themida.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Themida.exe

pid	Process
1848	Themida.exe
1848	Themida.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

Themida.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Themida.exe

Modifies registry class 2 IoCs

Processes:

Themida.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}	Themida.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}\SortOrderIndex = 0cb2608413d64033	Themida.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Themida.exe

pid	Process
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

Themida.exe

pid	Process
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe
1848	Themida.exe

C:\Users\Admin\AppData\Local\Temp\Themida.v.3.1.8.0\Themida.exe
"C:\Users\Admin\AppData\Local\Temp\Themida.v.3.1.8.0\Themida.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\41557b5.dll

Filesize
8KB

MD5
54567e082e0e1987f13a6fe7e3431761

SHA1
b3b3ae53bf362099ef7c593e37a1c8ba40576162

SHA256
17db2ce42b83bb8fe64b29f187d97c88598753c177a8868684f62f9eacf5e244

SHA512
b8608b98616019fbf22b48636e936df1e8a7987d8d56f749df54208bef65267212b7047893043cdc48801b2bff0faaf12c82934d251bf914424a170976e3f1d3

Download Submit
memory/1848-0-0x00000000761B0000-0x00000000761B1000-memory.dmp

Filesize
4KB

Download
memory/1848-3-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-5-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-7-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-6-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-4-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-8-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-2-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-1-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-10-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-11-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-12-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-13-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-14-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-15-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-16-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-35-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-34-0x00000000761B0000-0x00000000761B1000-memory.dmp

Filesize
4KB

Download
memory/1848-33-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-32-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-38-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-37-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-39-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-46-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-47-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-49-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-53-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-57-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-56-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/1848-59-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-58-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-60-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-61-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-66-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-65-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-67-0x0000000076190000-0x0000000076280000-memory.dmp

Filesize
960KB

Download
memory/1848-68-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-69-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-70-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-71-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-72-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-73-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-75-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-76-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-77-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-78-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-79-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-80-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download
memory/1848-81-0x0000000000400000-0x0000000004C0F000-memory.dmp

Filesize
72.1MB

Download