lumma | 6c8dfbba2dfc6053ef6de63a3eb88e980c4f31fdbd249d30d854314a666fff30

Analysis

max time kernel
62s
max time network
74s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2023, 06:14

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General

Target

Themida.exe
Size

27.8MB
MD5

edd5dd7c99e8eb348975c07141c37ee7
SHA1

3070564b9446b86825fbdccd0e51e29b7480c2cc
SHA256

d09924511b04573e4ab90024a1d34803badbe02c803fa9c866802329721fedbb
SHA512

45b842259c3fd81a157caeeaf1be00e010ff8603e82920cffb3b723e1bb31b68f01c01adcf899e8b2ecd88d0e4d9b9f87e74b447780fed76cb598de4e3c46306
SSDEEP

393216:8nqcmcSBE/dfB9NjwtLzRQiV8v9cxcBxkxI+iTNMrYc1o+v3hdAw+G:8BmxBE1p99ARQiV8v9BVAYcK+Ew

Score

10^/10

lumma bootkit evasion persistence stealer trojan

Malware Config

Signatures

Lumma Stealer
An infostealer written in C++ first seen in August 2022.
stealer lumma

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__	Themida.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\VideoBiosVersion	Themida.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Themida.exe

Loads dropped DLL 1 IoCs

pid	Process
3948	Themida.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	Themida.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

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Themida.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3948	Themida.exe
3948	Themida.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}	Themida.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}\SortOrderIndex = e15f2412e86404e0	Themida.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3948	Themida.exe
3948	Themida.exe
3948	Themida.exe
3948	Themida.exe

C:\Users\Admin\AppData\Local\Temp\Themida.exe
"C:\Users\Admin\AppData\Local\Temp\Themida.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:3948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

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

C:\Users\Admin\AppData\Local\Temp\49f4a58c.dll

Filesize
8KB

MD5
40a00198fe9a7c3916d286c554d9e251

SHA1
9653f828c1846701bbcee2f5b3c64a0c9d8f1760

SHA256
0c3f6b91e1315fd50edb55e0e32f01dee3bf5f8b010fba651dd5a20978446b0c

SHA512
3795080d5738e996af02d391277dab47b608ad3901531458ba99b0931fc25a91c8ecbd3d7b96eddf7d13c78876e1a878f9483d166543efe89d1e5bd43dfe7060

Download Submit
memory/3948-134-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-135-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-136-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-138-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-137-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-139-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-140-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-143-0x0000000010000000-0x00000000126F8000-memory.dmp

Filesize
39.0MB

Download
memory/3948-142-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-147-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download
memory/3948-153-0x00000000004A0000-0x0000000004825000-memory.dmp

Filesize
67.5MB

Download