360c17322f2603a7679edfd80fafbabb85074ba0b485efd489dd04da4d75f3a5

Resubmissions

12/05/2024, 17:11

240512-vqm7asff7v 9

12/05/2024, 17:11

240512-vqej6aff6s 7

12/05/2024, 17:10

240512-vp12rsff4y 7

Analysis

max time kernel
27s
max time network
30s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
12/05/2024, 17:11

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Prax.dll
Size

8.3MB
MD5

b381fe02377903a1a88a179e88f7fedb
SHA1

e91c0faf351deca21db1d8c6082409fe18e15d27
SHA256

360c17322f2603a7679edfd80fafbabb85074ba0b485efd489dd04da4d75f3a5
SHA512

e965c723af577c4978d8623f2a1668cef167b8cd9ef6f1524622a80bdfb708bc6151ee575dde99154a5f694262d231e0b50fb7cd4929e6d922c3db872f60ec23
SSDEEP

98304:r7gbv3Z8p+VC4Ej2BucGCMhlFfc6jdvM6FzVOfuGDc0pIZCCS0yCvyA9:fgbvdxEjwurhlFjjdvhzOfXA0pNd89

Score

9^/10

evasion themida 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe

Checks BIOS information in registry 2 TTPs 2 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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/4544-0-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-3-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-2-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-4-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-5-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-6-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-7-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-8-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida
behavioral1/memory/4544-9-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp	themida

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	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4544	rundll32.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "143"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365268"	LogonUI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4912	LogonUI.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Prax.dll,#1
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:4544

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3a12855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4544-0-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-1-0x00007FF81C687000-0x00007FF81C689000-memory.dmp

Filesize
8KB

Download
memory/4544-3-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-2-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-4-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-5-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-6-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-7-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-8-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download
memory/4544-9-0x00007FFFFAD20000-0x00007FFFFC24A000-memory.dmp

Filesize
21.2MB

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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