fcefde2ed490119c73ac4f89752e4c8225c66dd06e1fd3db2d7a1dd207e30613

Analysis

max time kernel
67s
max time network
51s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 00:58

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General

Target

2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe
Size

8.5MB
MD5

8e2e689ff61cf9a422d2800338098a3e
SHA1

c871e4ca5e20d496cb69ab6d2df07be0592b6584
SHA256

fcefde2ed490119c73ac4f89752e4c8225c66dd06e1fd3db2d7a1dd207e30613
SHA512

47f9cc182f619c23b86ef60b24da831cd5373a81e8c3016cd97c71e667d3ad02763002c091c62b74988258588aa552af4cc586592c70ba10015c5dc461dd039a
SSDEEP

98304:lj21qjo/OmhIVE0HeIOq/y6SCmtC8RHemKSPM7D/ClKlwvfW2T2ixwf:lq1q8/OmhIVBlOM5mtCgKSlKgfW8xw

Score

9^/10

bootkit evasion persistence 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__	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.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\SystemBiosDate	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe

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	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe

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	2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_8e2e689ff61cf9a422d2800338098a3e_ryuk.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

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/2356-3-0x00007FF797E70000-0x00007FF7986E9000-memory.dmp

Filesize
8.5MB

Download
memory/2356-4-0x00007FF797E70000-0x00007FF7986E9000-memory.dmp

Filesize
8.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads