e9e8dcbbc1d5968eb31906ae0ebb85b4bf6ed104ce5e1208e7730f91d3476d1d

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 20:01

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General

Target
e9e8dcbbc1d5968eb31906ae0ebb85b4bf6ed104ce5e1208e7730f91d3476d1d.dll
Size 3.0MB
Sample221003-yrjr2sdeej
SHA256 e9e8dcbbc1d5968eb31906ae0ebb85b4bf6ed104ce5e1208e7730f91d3476d1d
MD5 863a2fcef39ce06c0f459179ec34391c
SHA1 02862ce82760e9e46fafdf8b68ba3efb827feb14
SHA512 2249e1297772d7d6f3d4d1fbb3156ce7b900dd0bba8b9ba95d4ced3152936f5c4f3ddc93f794f8ddb8d8fd5a28e4029a48bb9bcc0d828742c6e2eb7274b585c6
SSDEEP 49152:KIJpcPuYN19hlWoS76Vu0bIyoiz3ZeYbERnTxOfAbEsyU9mY1l+r/SmNcVhyd:KIJCJ19h5dLZbEtTxnAsyU9Horamog
MD5 SHA1 SHA512 SSDEEP

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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1168	rundll32.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
212	1168	WerFault.exe	85
4592	1168	WerFault.exe	85
2912	1168	WerFault.exe	85

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1168	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 1168	4376	rundll32.exe	85
PID 4376 wrote to memory of 1168	4376	rundll32.exe	85
PID 4376 wrote to memory of 1168	4376	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9e8dcbbc1d5968eb31906ae0ebb85b4bf6ed104ce5e1208e7730f91d3476d1d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9e8dcbbc1d5968eb31906ae0ebb85b4bf6ed104ce5e1208e7730f91d3476d1d.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetWindowsHookEx
  PID:1168
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1168 -s 928
    3⤵
    - Program crash
    PID:212
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1168 -s 648
    3⤵
    - Program crash
    PID:4592
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1168 -s 644
    3⤵
    - Program crash
    PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1168 -ip 1168
1⤵
PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1168 -ip 1168
1⤵
PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1168 -ip 1168
1⤵
PID:884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1168-133-0x0000000010000000-0x0000000010892000-memory.dmp

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