2f72a443711dcb2ed5a9f760fe517ee156963c7c73c8c77a29dbdb2469353254

Analysis

max time kernel
28s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
15-03-2023 14:53

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General

Target

Caiori.exe
Size

55.9MB
MD5

fa2506d2f26a8620252672f9b4fe1982
SHA1

c44d2903a80f22bb6956895f24c52e4e281d0e30
SHA256

09616435fdac3fc6dbc3ada7c6f3aed5a4a369418a99a162e8c6134d25a905ea
SHA512

b4a5245570156fb4bcbbcd162a6c7550d6ca04b4b6434c2d05e370462910f8c492e5058e96806f2f8a7fb8bdbf4f73e63459c61485e95f237a37a1942fe02c54
SSDEEP

786432:80LoCOn+27s4urYDNulLBiuV8P876Drt57RVK4Q/h5pUaHUL:8MoCm/7Xw6O4Q/h5pUL

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:

Caiori.exe

description ioc process

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

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

Caiori.exe

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

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1776-54-0x000000013F910000-0x000000014263C000-memory.dmp	themida
behavioral1/memory/1776-55-0x000000013F910000-0x000000014263C000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

Caiori.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Caiori.exe

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

C:\Users\Admin\AppData\Local\Temp\Caiori.exe
"C:\Users\Admin\AppData\Local\Temp\Caiori.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
PID:1776

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

Replay Monitor

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Downloads

memory/1776-54-0x000000013F910000-0x000000014263C000-memory.dmp

Filesize
45.2MB

Download
memory/1776-55-0x000000013F910000-0x000000014263C000-memory.dmp

Filesize
45.2MB

Download