ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845

Analysis

max time kernel
91s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 22:33

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General

Target

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe
Size

624KB
MD5

c3201abf7146ab685f4ecb118036f020
SHA1

a0d0341530fede0c3e25d4bb050ceca72cf836f8
SHA256

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845
SHA512

40e8479c251355db393da589b6b306d690e02629391ff84747d38f4fc465cb2207f4fe6bfff872f67f86fac0e7fe6b6273a1bd5bc6bf1db30e0ba2ee6cbd0461
SSDEEP

12288:JPHtLcahfnqx6P3zal/J7ZSIVvY44/N7gkW74/msTIlTL:JPHtBYUzawIVvYddI4us

Score

6^/10

bootkit persistence

Malware Config

Signatures

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.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

Processes:

EF8C7F~1.EXE

description ioc process

File opened for modification \??\PhysicalDrive0 EF8C7F~1.EXE

description	ioc	process
File opened for modification	\??\PhysicalDrive0	EF8C7F~1.EXE

Suspicious use of SetThreadContext 1 IoCs

Processes:

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

description	pid	process	target process
PID 2692 set thread context of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

pid process

2692 ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

pid process

2692 ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

pid	process
2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

pid	process
2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe

description	pid	process	target process
PID 2692 wrote to memory of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE
PID 2692 wrote to memory of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE
PID 2692 wrote to memory of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE
PID 2692 wrote to memory of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE
PID 2692 wrote to memory of 3256	2692	ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe	EF8C7F~1.EXE

C:\Users\Admin\AppData\Local\Temp\ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe
"C:\Users\Admin\AppData\Local\Temp\ef8c7f72e23cc6e38068566ca80bd2d395266e26c263551988d9c920b1d04845.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2692

C:\Users\Admin\AppData\Local\Temp\EF8C7F~1.EXE
C:\Users\Admin\AppData\Local\Temp\EF8C7F~1.EXE --list
2⤵
- Writes to the Master Boot Record (MBR)
PID:3256

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2692-132-0x0000000000400000-0x00000000005E0000-memory.dmp

Filesize
1.9MB

Download
memory/2692-138-0x0000000000400000-0x00000000005E0000-memory.dmp

Filesize
1.9MB

Download
memory/3256-133-0x0000000000000000-mapping.dmp

Download
memory/3256-134-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/3256-136-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/3256-137-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download