1b728154a3829a97622bc121768ab074946d72e86dbcbf650e511b8e73765ca0

Analysis

max time kernel
159s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 22:37

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General

Target

U盘启动制作工具包/FbinstTool.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:

FbinstTool.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	FbinstTool.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	FbinstTool.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:

FBINST~1.EXE

description ioc process

File opened for modification \??\PhysicalDrive0 FBINST~1.EXE
Suspicious use of SetThreadContext 1 IoCs

Processes:

FbinstTool.exe

description pid process target process

PID 2036 set thread context of 2000 2036 FbinstTool.exe FBINST~1.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

FbinstTool.exe

pid process

2036 FbinstTool.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

FbinstTool.exe

pid process

2036 FbinstTool.exe

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

description	pid	process	target process
PID 2036 set thread context of 2000	2036	FbinstTool.exe	FBINST~1.EXE

pid	process
2036	FbinstTool.exe

pid	process
2036	FbinstTool.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

FbinstTool.exe

description	pid	process	target process
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE
PID 2036 wrote to memory of 2000	2036	FbinstTool.exe	FBINST~1.EXE

C:\Users\Admin\AppData\Local\Temp\U盘启动制作工具包\FbinstTool.exe
"C:\Users\Admin\AppData\Local\Temp\U盘启动制作工具包\FbinstTool.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2036

C:\Users\Admin\AppData\Local\Temp\U1EFD~1\FBINST~1.EXE
C:\Users\Admin\AppData\Local\Temp\U1EFD~1\FBINST~1.EXE --list
2⤵
- Writes to the Master Boot Record (MBR)
PID:2000

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/2000-57-0x0000000000401130-mapping.dmp

Download
memory/2000-56-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2000-59-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2000-60-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2036-54-0x0000000076941000-0x0000000076943000-memory.dmp

Filesize
8KB

Download
memory/2036-55-0x0000000000400000-0x00000000005E0000-memory.dmp

Filesize
1.9MB

Download
memory/2036-61-0x0000000000400000-0x00000000005E0000-memory.dmp

Filesize
1.9MB

Download
memory/2036-62-0x0000000002F40000-0x0000000003120000-memory.dmp

Filesize
1.9MB

Download