c950b1947f7d9cc3bcc7020de679278d0088b4cffcb6afc39ad70735e3c5fa3c

Analysis

max time kernel
159s
max time network
186s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 14:26

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General

Target

c950b1947f7d9cc3bcc7020de679278d0088b4cffcb6afc39ad70735e3c5fa3c.dll
Size

836KB
MD5

a46dd16207a9ef3b37305ba207e4c4d9
SHA1

53d4e858aa1205acdc91524ed3676304ec5bf288
SHA256

c950b1947f7d9cc3bcc7020de679278d0088b4cffcb6afc39ad70735e3c5fa3c
SHA512

d17c2d45a66d86ce194a4576cb13ed61f6b934626cbc834dc4d51c65df53e3250bf68c0b90c8bd320ab08ae092c1d3fc39a65d039cb9e5dfb2769f49cf3a736c
SSDEEP

12288:U/HxSHsMncjYlGOnp4QNbfLGQjBR+sTNhSGwqhO71Svvb+U6f:gR/4c+pvxzTj7XTN9RO5evb+U6f

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\53-12445-71	rundll32.exe
File created	C:\Windows\SysWOW64\19c	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28
PID 940 wrote to memory of 1616	940	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c950b1947f7d9cc3bcc7020de679278d0088b4cffcb6afc39ad70735e3c5fa3c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:940
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c950b1947f7d9cc3bcc7020de679278d0088b4cffcb6afc39ad70735e3c5fa3c.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  PID:1616

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/1616-55-0x00000000760A1000-0x00000000760A3000-memory.dmp

Filesize
8KB

Download
memory/1616-56-0x0000000010000000-0x00000000100B5000-memory.dmp

Filesize
724KB

Download
memory/1616-57-0x0000000010000000-0x00000000100B5000-memory.dmp

Filesize
724KB

Download