a23b0ef1797fb8fbaad39b7ee7578cfc581cbce3154e3265a0e71bbcf9debd5b

Analysis

max time kernel
152s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 05:47

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General

Target

a23b0ef1797fb8fbaad39b7ee7578cfc581cbce3154e3265a0e71bbcf9debd5b.dll
Size

214KB
MD5

9ff0b0556ec293992264f1a5332dc74c
SHA1

5d676a1262335fef80442c82b1d11f4c7552952c
SHA256

a23b0ef1797fb8fbaad39b7ee7578cfc581cbce3154e3265a0e71bbcf9debd5b
SHA512

3d3a805199898130137001202890347009e7c9d9c31dea43e3ae59767c76622f63c550d9677aeea8f434fbb179882e9a85978552737f881a243b0372fd168a1f
SSDEEP

3072:VKomBsj+/XgWrtNgpI2ll8FZHj5nQFvc8UbWgoUV9E5lAuDHEAUFqNMH+t4SL8RJ:VoGWriIwqlAvHU/EPDvUFqe+R9Z9WIYZ

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\ñ--6499-91-46	rundll32.exe
File created	C:\Windows\SysWOW64\46c5	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27
PID 740 wrote to memory of 2008	740	rundll32.exe	27

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a23b0ef1797fb8fbaad39b7ee7578cfc581cbce3154e3265a0e71bbcf9debd5b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a23b0ef1797fb8fbaad39b7ee7578cfc581cbce3154e3265a0e71bbcf9debd5b.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  PID:2008

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/2008-54-0x0000000000000000-mapping.dmp

Download
memory/2008-55-0x0000000075A81000-0x0000000075A83000-memory.dmp

Filesize
8KB

Download
memory/2008-56-0x0000000010000000-0x00000000100A5000-memory.dmp

Filesize
660KB

Download
memory/2008-57-0x0000000010000000-0x00000000100A5000-memory.dmp

Filesize
660KB

Download