91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524

Analysis

max time kernel
44s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
03/10/2022, 08:38

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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 1368 set thread context of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1964	1232	WerFault.exe	27

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1368 wrote to memory of 1232	1368	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	27
PID 1232 wrote to memory of 1964	1232	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	28
PID 1232 wrote to memory of 1964	1232	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	28
PID 1232 wrote to memory of 1964	1232	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	28
PID 1232 wrote to memory of 1964	1232	91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe	28

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:1368
- C:\Users\Admin\AppData\Local\Temp\91c844b8ad32c9119d75e7459579d0d90137d560ee496dc2664caf6e85aba524.exe
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of WriteProcessMemory
  PID:1232
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 128
    3⤵
    - Program crash
    PID:1964

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/1232-56-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1232-57-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1232-58-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1232-60-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1232-63-0x0000000074E41000-0x0000000074E43000-memory.dmp

Filesize
8KB

Download
memory/1232-64-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download
memory/1232-66-0x000000002AA00000-0x000000002AA04000-memory.dmp

Filesize
16KB

Download