c864c899b70587574b1a1d088767b77dbb2503306d0fbb69d6309f9d82e3338e

Analysis

max time kernel
165s
max time network
69s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
05/12/2022, 06:07

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General

Target

c864c899b70587574b1a1d088767b77dbb2503306d0fbb69d6309f9d82e3338e.dll
Size

716KB
MD5

32daeddfe535f4743a3304c510e449e0
SHA1

654500e3dbf08e1cb5a316133c9eb13fef02ffd8
SHA256

c864c899b70587574b1a1d088767b77dbb2503306d0fbb69d6309f9d82e3338e
SHA512

4416fb9569ed9c39bae68ba3d456a002d84acb5ef4713276a6ff95018f3213320733131cd5bb264ecd828b0df3a3e8533f945912364685b92cb51c9bed595e5e
SSDEEP

12288:dgOmWyRxlEcKqJobHQiCg1DJiJpORoUcuCywd19skKa6NExxZs:drIRHtJIQiV1DciRobuqXDKa6NE7Z

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

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\-37-8-4638	rundll32.exe
File created	C:\Windows\SysWOW64\025a	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28
PID 1256 wrote to memory of 1844	1256	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c864c899b70587574b1a1d088767b77dbb2503306d0fbb69d6309f9d82e3338e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c864c899b70587574b1a1d088767b77dbb2503306d0fbb69d6309f9d82e3338e.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  PID:1844

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/1844-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

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