47579603f29f74bf9fc676df0e7e12202831d0610c2b9594eb3fd5633a64998f

Analysis

max time kernel
75s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230703-es
resource tags

arch:x64arch:x86image:win10v2004-20230703-eslocale:es-esos:windows10-2004-x64systemwindows
submitted
06/07/2023, 05:46

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General

Target

bf4.exe
Size

17.4MB
MD5

ded83cb9bb9334f1442a0099096632c9
SHA1

a32e1b7c5a72efad842d0a4d1edb0d8435ebc848
SHA256

47579603f29f74bf9fc676df0e7e12202831d0610c2b9594eb3fd5633a64998f
SHA512

b525872d2838341a98df24181a58ae2c3c82569ea16fd0d1e755585cd06ad73e501d6ea407b102236e46013f0c32e61e78cd4460f5ef9bd8afbba7e5797d4c49
SSDEEP

393216:r/3NnU+oBtFv4Nk/H1fWifHcIWL+gHn1+eGYwLpwCksXBM7FT:L3NnyCS1fLfH7WLPnJCq2M7FT

Score

6^/10

Malware Config

Signatures

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Videos\Captures\desktop.ini	svchost.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	bf4.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	bf4.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1722984668-1829624581-3022101259-1000\{FCDD4AC7-98D5-44D2-B9FF-DF06D97A4DDD}	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
548	bf4.exe
548	bf4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	548	bf4.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
548	bf4.exe
548	bf4.exe
764	OpenWith.exe

C:\Users\Admin\AppData\Local\Temp\bf4.exe
"C:\Users\Admin\AppData\Local\Temp\bf4.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:548

C:\Windows\System32\GameBarPresenceWriter.exe
"C:\Windows\System32\GameBarPresenceWriter.exe" -ServerName:Windows.Gaming.GameBar.Internal.PresenceWriterServer
1⤵
PID:3636

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:764

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
PID:4216

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Videos\Captures\desktop.ini

Filesize
190B

MD5
b0d27eaec71f1cd73b015f5ceeb15f9d

SHA1
62264f8b5c2f5034a1e4143df6e8c787165fbc2f

SHA256
86d9f822aeb989755fac82929e8db369b3f5f04117ef96fd76e3d5f920a501d2

SHA512
7b5c9783a0a14b600b156825639d24cbbc000f5066c48ce9fecc195255603fc55129aaaca336d7ce6ad4e941d5492b756562f2c7a1d151fcfc2dabac76f3946c

Download Submit
memory/548-133-0x0000000140000000-0x0000000143CEA000-memory.dmp

Filesize
60.9MB

Download
memory/548-137-0x00007FFE44710000-0x00007FFE44711000-memory.dmp

Filesize
4KB

Download