91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524

Analysis

max time kernel
153s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 08:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe
Size

58KB
MD5

4b74cb34f9927a838389d98f0a9902f2
SHA1

612170ebe4292784434022016892745fa1b472bd
SHA256

91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524
SHA512

8d62c2f0f602c74a526299034c78bf9e03292aff0693bd099f7d09aa738f144ac71c7436c159c66ba482aa29790a297350db33d8104dc01bdda6ff152f9c69b1
SSDEEP

768:qFeskANtWy6U13GXcda9ZQLkr8fRjj42c6TmtAtaK6B7Ix2uAfLiox613zJT1Bmx:qdj0+WOsskrH2NtaK6RiAfLi9JfF81

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	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2588	1808	WerFault.exe	83

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83
PID 4580 wrote to memory of 1808	4580	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	83

C:\Users\Admin\AppData\Local\Temp\91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe
"C:\Users\Admin\AppData\Local\Temp\91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe
  2⤵
  - Writes to the Master Boot Record (MBR)
  PID:1808
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1808 -s 312
    3⤵
    - Program crash
    PID:2588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1808 -ip 1808
1⤵
PID:2548

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

Loading Replay Monitor...

Downloads

memory/1808-135-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1808-137-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1808-138-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download