lumma | 6c8dfbba2dfc6053ef6de63a3eb88e980c4f31fdbd249d30d854314a666fff30

Analysis

max time kernel
47s
max time network
66s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
25-05-2023 06:14

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General

Target

Themida64.exe
Size

28.0MB
MD5

32fc28621507bfcc035bb2ab6c139d23
SHA1

a2531c635b30aaeca192b185f2c7510bbf6bb638
SHA256

3e93c31b8146d46996dff4936d9f716d839fb0d3526226b43113a550004b3766
SHA512

aa4f33e7e6e3ccf8455712af1ea9de2e96b5c7b3602f909addcd3f1af20217312ecb0d357eb39755cdb1a509053487c0c6c1a51a553cbddbc9c77ec26e45f485
SSDEEP

786432:OYcabYtPjQy3wvrR09LQlSIoJq6DuPNN4N7j:7c6YtH3s09MlSIAg4N

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__	Themida64.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\SystemBiosVersion	Themida64.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Themida64.exe

Loads dropped DLL 1 IoCs

pid	Process
1912	Themida64.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	Themida64.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	Themida64.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1912	Themida64.exe
1912	Themida64.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}	Themida64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000_Classes\WOW6432Node\CLSID\{b7c3410b-45b3-a8e5-a082-d545a584}\SortOrderIndex = e15f2412e86404e0	Themida64.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1912	Themida64.exe
1912	Themida64.exe
1912	Themida64.exe
1912	Themida64.exe

C:\Users\Admin\AppData\Local\Temp\Themida64.exe
"C:\Users\Admin\AppData\Local\Temp\Themida64.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:1912

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\4f4b8407.dll

Filesize
8KB

MD5
40a00198fe9a7c3916d286c554d9e251

SHA1
9653f828c1846701bbcee2f5b3c64a0c9d8f1760

SHA256
0c3f6b91e1315fd50edb55e0e32f01dee3bf5f8b010fba651dd5a20978446b0c

SHA512
3795080d5738e996af02d391277dab47b608ad3901531458ba99b0931fc25a91c8ecbd3d7b96eddf7d13c78876e1a878f9483d166543efe89d1e5bd43dfe7060

Download Submit
memory/1912-165-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-173-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-137-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-138-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-141-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-142-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-135-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-166-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-175-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-136-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-157-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-167-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-168-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-169-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-170-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-171-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-172-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-134-0x0000000000290000-0x000000000463B000-memory.dmp

Filesize
67.7MB

Download
memory/1912-174-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download
memory/1912-164-0x0000000010000000-0x0000000012715000-memory.dmp

Filesize
39.1MB

Download