300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c

Analysis

max time kernel
30s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-10-2022 02:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe
Size

2.4MB
MD5

76aae0d0fb0cf970a481beb95580ebcf
SHA1

73de7aa1e2e2b1cf3f531b48608a62faa859034a
SHA256

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c
SHA512

90efb9ef333ffd6eb7353a02d90bf96e467aa3ce0afcb09d78498bb37d4946d7dfa53a5604020ae4b18f3da2d0aa7e28e6347e7894c727222850622dd5711d7a
SSDEEP

49152:DloJPMjoO4f13LtQmvS5N2krwqtaqLWWbFQCHTCWCJwhRkuw3R:DloJPM0Og1qmvS5xdtZP2kTCWCJwh4

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:

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

description ioc process

File opened for modification \??\PhysicalDrive0 300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

940 1900 WerFault.exe 300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

pid	pid_target	process	target process
940	1900	WerFault.exe	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

Modifies registry class 3 IoCs

Processes:

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

pid process

1900 300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

pid	process
1900	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe

description	pid	process	target process
PID 1900 wrote to memory of 940	1900	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe	WerFault.exe
PID 1900 wrote to memory of 940	1900	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe	WerFault.exe
PID 1900 wrote to memory of 940	1900	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe	WerFault.exe
PID 1900 wrote to memory of 940	1900	300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe
"C:\Users\Admin\AppData\Local\Temp\300703d98eb275b8291e6e1f39a01b76fb23f02d484bc21efa7bc8809a40b21c.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 712
2⤵
- Program crash
PID:940

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/940-56-0x0000000000000000-mapping.dmp

Download
memory/1900-54-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

Filesize
8KB

Download
memory/1900-55-0x0000000000400000-0x0000000000C70000-memory.dmp

Filesize
8.4MB

Download
memory/1900-57-0x00000000003D0000-0x00000000003D4000-memory.dmp

Filesize
16KB

Download
memory/1900-58-0x0000000000400000-0x0000000000C70000-memory.dmp

Filesize
8.4MB

Download