3a2846143d7bf192e0dc3bcdbe6245ebc71cbc8de527f07b194e1e559c74fdac

General

Target

free-fire-gameloop-1-94-1.exe
Size

3.6MB
MD5

4dd66324d20bb685f7186f5759db3996
SHA1

9d9377f2a3817f7cfb2994585a26bc18785858d2
SHA256

3a2846143d7bf192e0dc3bcdbe6245ebc71cbc8de527f07b194e1e559c74fdac
SHA512

0126e01073374400598660bce59145c7b12bfcea3efdf0e30f1faa5acc7c7b3fdef608af1459da9951ce546f5f3b02e97b4c657a2bd271aa7663e1c77cda64b4
SSDEEP

98304:yTyXLwBG1SqaMx+Ww1hWu0Dr74tKEhqt6:yTBACww6DI4mq8

Score

8^/10

bootkit persistence

Malware Config

Signatures

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

free-fire-gameloop-1-94-1.exe

pid process

2004 free-fire-gameloop-1-94-1.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

Processes:

free-fire-gameloop-1-94-1.exe

description ioc process

File opened for modification \??\PhysicalDrive0 free-fire-gameloop-1-94-1.exe

pid	process
2004	free-fire-gameloop-1-94-1.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	free-fire-gameloop-1-94-1.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

free-fire-gameloop-1-94-1.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	free-fire-gameloop-1-94-1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	free-fire-gameloop-1-94-1.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

free-fire-gameloop-1-94-1.exe

pid process

2004 free-fire-gameloop-1-94-1.exe

pid	process
2004	free-fire-gameloop-1-94-1.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

AUDIODG.EXE

description	pid	process
Token: 33	1720	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1720	AUDIODG.EXE
Token: 33	1720	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1720	AUDIODG.EXE

C:\Users\Admin\AppData\Local\Temp\free-fire-gameloop-1-94-1.exe
"C:\Users\Admin\AppData\Local\Temp\free-fire-gameloop-1-94-1.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
PID:2004

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1680

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x1ec
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1720

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll
Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

Download Submit
memory/2004-59-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/2004-60-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download
memory/2004-61-0x0000000000220000-0x000000000022A000-memory.dmp

Filesize
40KB

Download

Analysis

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