f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6

General

Target

f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
Size

2.2MB
MD5

050bb783684b01353c2675afbda69cb8
SHA1

2010513490d076152585f2bdcc92f3aa57aae617
SHA256

f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6
SHA512

9edb501f561172e5c1f3da51fa06f5dc87100675956c3139601b0e41148b7af0c100c450bef47de6e546d54c9fbb2fd9f51d74f90ccf3ea23b2b15a7507aa0ef
SSDEEP

49152:KYua2CnTfy2zsRiZjhg3b5sGnyE5uxIyxf/tEr:KYua2oTfy2osInZ5uxIyxf/2

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/0x000500000000b2d2-55.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\G:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\J:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\Q:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\T:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\U:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\W:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\E:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\N:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\S:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\V:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\Y:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\F:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\L:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\I:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\K:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\M:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\O:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\P:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\R:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\X:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\Z:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
File opened (read-only)	\??\H:	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.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	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
1444	f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe

C:\Users\Admin\AppData\Local\Temp\f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe
"C:\Users\Admin\AppData\Local\Temp\f81b25dcbe7d8849d58c36b8360ff46c854120dd59d90291e5446e0c850634e6.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1444

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0xc8
1⤵
PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\bak11.tmp

Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

Download Submit
memory/1444-54-0x0000000075D71000-0x0000000075D73000-memory.dmp

Filesize
8KB

Download
memory/1444-56-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/1444-57-0x0000000000260000-0x00000000002D3000-memory.dmp

Filesize
460KB

Download
memory/1444-58-0x0000000003260000-0x0000000003268000-memory.dmp

Filesize
32KB

Download
memory/1444-59-0x0000000003260000-0x0000000003268000-memory.dmp

Filesize
32KB

Download
memory/1444-60-0x0000000000400000-0x000000000060C000-memory.dmp

Filesize
2.0MB

Download
memory/1444-61-0x0000000000260000-0x00000000002D3000-memory.dmp

Filesize
460KB

Download

Analysis

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