b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b

Analysis

max time kernel
159s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 19:37

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General

Target

b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe
Size

8.0MB
MD5

c497c713943f504dd9e5c518f16342f6
SHA1

21bdf8aacf6f4da401656158af270427280a8eb5
SHA256

b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b
SHA512

2cc0d958ab0c1a59143deb7ff83bb60480a4ddeee6c63ebcab577b04535ae61a0041afe0cff98a6007cde8add9d674ccd4614ace951afae6027f995a881e53d5
SSDEEP

196608:IrgJGjqMEnMgvs/s7veVyzX2ETkeq7+IefW3WvxL4hv1RTQ1yzf:xJJMUMgveszeVwGMdqSIKHL4hDTQ1Yf

Score

9^/10

bootkit persistence

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000142d3-55.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
884	b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe

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	b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
884	b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe

C:\Users\Admin\AppData\Local\Temp\b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe
"C:\Users\Admin\AppData\Local\Temp\b83ff6e1471a7578c16862131817f08b7f60f55e8d86e097896444539bd0b35b.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious use of SetWindowsHookEx
PID:884

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4e8
1⤵
PID:1476

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\tck1AD2.tmp

Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
memory/884-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/884-56-0x0000000000220000-0x0000000000293000-memory.dmp

Filesize
460KB

Download
memory/884-57-0x0000000000858000-0x0000000000869000-memory.dmp

Filesize
68KB

Download
memory/884-58-0x0000000003140000-0x000000000341E000-memory.dmp

Filesize
2.9MB

Download
memory/884-59-0x0000000003140000-0x000000000341E000-memory.dmp

Filesize
2.9MB

Download
memory/884-60-0x0000000000220000-0x0000000000293000-memory.dmp

Filesize
460KB

Download