99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a

Analysis

max time kernel
101s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
07-08-2022 14:19

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General

Target

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe
Size

2.5MB
MD5

1b5c894a95dcf5bb9c0f6e61aa081b11
SHA1

3089bc5e97dd7c0ff81cf1776b4fc91e8b4841e8
SHA256

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a
SHA512

a4384a341b4d90094e15b1c7f08f896f568c8e0f77acce624a80f7398b50d6db40e00efd03a5a14d121d8f5112880f2d37b2b824a6f85a37f88866fa7e628131

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:

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.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:

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4648-130-0x0000000000BA0000-0x000000000120B000-memory.dmp	themida
behavioral2/memory/4648-131-0x0000000000BA0000-0x000000000120B000-memory.dmp	themida
behavioral2/memory/4648-132-0x0000000000BA0000-0x000000000120B000-memory.dmp	themida
behavioral2/memory/4648-133-0x0000000000BA0000-0x000000000120B000-memory.dmp	themida
behavioral2/memory/4648-135-0x0000000000BA0000-0x000000000120B000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

pid process

4648 99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

pid	process
4648	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe
4648	99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe

C:\Users\Admin\AppData\Local\Temp\99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe
"C:\Users\Admin\AppData\Local\Temp\99ca521b2cf80e69c0493303e9870a9c55a0e1c93005b49d9de3f96a800a701a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:4648

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/4648-130-0x0000000000BA0000-0x000000000120B000-memory.dmp

Filesize
6.4MB

Download
memory/4648-131-0x0000000000BA0000-0x000000000120B000-memory.dmp

Filesize
6.4MB

Download
memory/4648-132-0x0000000000BA0000-0x000000000120B000-memory.dmp

Filesize
6.4MB

Download
memory/4648-133-0x0000000000BA0000-0x000000000120B000-memory.dmp

Filesize
6.4MB

Download
memory/4648-134-0x00000000775E0000-0x0000000077783000-memory.dmp

Filesize
1.6MB

Download
memory/4648-135-0x0000000000BA0000-0x000000000120B000-memory.dmp

Filesize
6.4MB

Download
memory/4648-136-0x00000000775E0000-0x0000000077783000-memory.dmp

Filesize
1.6MB

Download