85c912a1a16544cb7b3c6f11048f764c969e76b2ae7ec94773521869cd871860

Analysis

max time kernel
141s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 10:22

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General

Target

Themida.v.3.1.8.0/Themida64.exe
Size

30.5MB
MD5

e0f0db8d1fd2c9a277f8e968977fa684
SHA1

ae23b1e880bfade564e44759d01b965fda1f15d3
SHA256

0486a1c12b05214b01ecf642e4c9c0159a767e507a4472cf8fda68deefe02786
SHA512

347cd8dd2c4c5e9e84d111a8ecec77372e409aaa85c21f2c26ccca013467fad524d34c4ed6bc82386b5fa7eafe83531c0c81d63490b64e972cf68ce0001a1d9c
SSDEEP

786432:zXLec7gEqw1qmSgjfXF6GCPKJn1pSRmnT:zCcQs5SgDX8GCPA1sRET

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:

Themida64.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Themida64.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:

Themida64.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Themida64.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Themida64.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Themida64.exe

Loads dropped DLL 1 IoCs

Processes:

Themida64.exe

pid	Process
540	Themida64.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Themida64.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Themida64.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:

Themida64.exe

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Themida64.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Themida64.exe

pid	Process
540	Themida64.exe
540	Themida64.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:

Themida64.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Themida64.exe

Modifies registry class 4 IoCs

Processes:

Themida64.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\CLSID	Themida64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}\SortOrderIndex = 0cb2608413d64033	Themida64.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}	Themida64.exe
Key created	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node	Themida64.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Themida64.exe

pid	Process
540	Themida64.exe
540	Themida64.exe
540	Themida64.exe
540	Themida64.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

Themida64.exe

pid	Process
540	Themida64.exe
540	Themida64.exe
540	Themida64.exe
540	Themida64.exe

C:\Users\Admin\AppData\Local\Temp\Themida.v.3.1.8.0\Themida64.exe
"C:\Users\Admin\AppData\Local\Temp\Themida.v.3.1.8.0\Themida64.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:540

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

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Downloads

\Users\Admin\AppData\Local\Temp\41ec407e.dll

Filesize
8KB

MD5
54567e082e0e1987f13a6fe7e3431761

SHA1
b3b3ae53bf362099ef7c593e37a1c8ba40576162

SHA256
17db2ce42b83bb8fe64b29f187d97c88598753c177a8868684f62f9eacf5e244

SHA512
b8608b98616019fbf22b48636e936df1e8a7987d8d56f749df54208bef65267212b7047893043cdc48801b2bff0faaf12c82934d251bf914424a170976e3f1d3

Download Submit
memory/540-40-0x0000000075CD1000-0x0000000075CD2000-memory.dmp

Filesize
4KB

Download
memory/540-74-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-3-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-4-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-5-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-9-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-15-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-14-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-13-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-12-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-11-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-10-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-8-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-7-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-6-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-16-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-18-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-20-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-19-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-22-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-23-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-21-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-78-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-2-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-58-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-49-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-51-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-48-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-59-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-55-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/540-60-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-61-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-62-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-63-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-64-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-68-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-69-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-70-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-71-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-72-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-73-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-0-0x0000000075CD1000-0x0000000075CD2000-memory.dmp

Filesize
4KB

Download
memory/540-75-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-76-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-77-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/540-1-0x0000000075CC0000-0x0000000075DD0000-memory.dmp

Filesize
1.1MB

Download
memory/540-79-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download