7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617

Analysis

max time kernel
46s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
02-10-2022 20:22

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General

Target

7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe
Size

3.7MB
MD5

95c0540c22a4ada77e3b26ca94f7844c
SHA1

93cd3839aaf4f87faf1c6df5e008ee4087be1624
SHA256

7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617
SHA512

0dca5ff5f19566d8bada95be2e2f02903af727f31a30df44d272e69e21b5d0b813166ca6328a7cb049c6d0b75019b9487d4e6c2e828086c6125608759f65f258
SSDEEP

49152:slxf87OIyP3Zuc1XyY0PuKv+lxf87OIyP3Zucx4Vp:slxGOIyPJucEP+lxGOIyPJuca

Score

6^/10

bootkit persistence

Malware Config

Signatures

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:

7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

description ioc process

File opened for modification \??\PhysicalDrive0 7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1936 1444 WerFault.exe 7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

pid process

1444 7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

pid	pid_target	process	target process
1936	1444	WerFault.exe	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

pid	process
1444	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe

description	pid	process	target process
PID 1444 wrote to memory of 1936	1444	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe	WerFault.exe
PID 1444 wrote to memory of 1936	1444	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe	WerFault.exe
PID 1444 wrote to memory of 1936	1444	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe	WerFault.exe
PID 1444 wrote to memory of 1936	1444	7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe
"C:\Users\Admin\AppData\Local\Temp\7f3ac8038c45ffb45cc429243dc9677e602ec7c27b8ad7e414e4adb787a04617.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 592
2⤵
- Program crash
PID:1936

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1444-54-0x0000000075D71000-0x0000000075D73000-memory.dmp

Filesize
8KB

Download
memory/1444-56-0x0000000000400000-0x0000000000580000-memory.dmp

Filesize
1.5MB

Download
memory/1936-55-0x0000000000000000-mapping.dmp

Download