661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c

Analysis

max time kernel
17s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30/10/2022, 05:39

Sharing

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General

Target

661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
Size

234KB
MD5

a316a77ac5270431b185e9a6cf57ac88
SHA1

78eb4eaf03a279fdf2a26073aeec27e08fd850b0
SHA256

661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c
SHA512

eb35d8eeeb70ee19d911acd52b8cc4e568e36ddc6696771227733e47f7d299020b293425ec7afe502f7b80bf4255b0c1014e2d086c89662185b8bc76d0066bfd
SSDEEP

6144:Tvvi58KpY8NcI4nVW5GJZ2tNYLj8MfsZd6+tFk:Dvi5xfgVzYKj86sZd6cFk

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	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1488 set thread context of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1488 wrote to memory of 1476	1488	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	27
PID 1476 wrote to memory of 1360	1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	9
PID 1476 wrote to memory of 1360	1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	9
PID 1476 wrote to memory of 1360	1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	9
PID 1476 wrote to memory of 1360	1476	661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe	9

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1360
- C:\Users\Admin\AppData\Local\Temp\661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
  "C:\Users\Admin\AppData\Local\Temp\661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Users\Admin\AppData\Local\Temp\661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe
    "C:\Users\Admin\AppData\Local\Temp\661387d87976c93f334e2444da1bb440e403e7e61c49d5419987d25a78da1a4c.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1476

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/1360-64-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

Filesize
28KB

Download
memory/1476-58-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1476-62-0x0000000000400000-0x0000000000408960-memory.dmp

Filesize
34KB

Download
memory/1476-63-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/1476-67-0x0000000010000000-0x0000000010013000-memory.dmp

Filesize
76KB

Download
memory/1488-54-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1488-55-0x00000000003E0000-0x00000000003E3000-memory.dmp

Filesize
12KB

Download
memory/1488-61-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download