db2f15859bf603ae865e77425d78331c310d2165a6a1164b10c21b7a50107938

Analysis

max time kernel
2s
platform
windows10-1703_x64
resource
win10-20231215-en
resource tags

arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system
submitted
12-02-2024 19:37

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General

Target

Prax1.0.7.dll
Size

6.4MB
MD5

965cba6a51a8f221a584c6592f6d364a
SHA1

7add8e3f2ba9c497413510ce8d96ace4943296b8
SHA256

db2f15859bf603ae865e77425d78331c310d2165a6a1164b10c21b7a50107938
SHA512

7fc89464e9019a04a1c18a6a124dd1110dafbaa40ae6cdb2d8f44d7bf6267499ef6de0a2166a99d38e73358c0bbd3f6b013cd462a4d693af2fa3a5dbdfaaa010
SSDEEP

196608:JSUqoiFcd9yP0v6ydkNMLlIKWsFefGVlC18Hj:0roiFc6svhaN2IKVeOVY1wj

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

Processes:

rundll32.exe

description ioc process

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

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

Processes:

rundll32.exe

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 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/372-2-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp	themida
behavioral1/memory/372-8-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp	themida
behavioral1/memory/372-9-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

372 rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

pid	process
372	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Prax1.0.7.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:372

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

Replay Monitor

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Downloads

memory/372-2-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp

Filesize
16.3MB

Download
memory/372-7-0x00007FFAD2600000-0x00007FFAD27DB000-memory.dmp

Filesize
1.9MB

Download
memory/372-8-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp

Filesize
16.3MB

Download
memory/372-9-0x00007FFAB5530000-0x00007FFAB6573000-memory.dmp

Filesize
16.3MB

Download