ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24-02-2024 00:42

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General

Target

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe
Size

3.8MB
MD5

3cb65869258a5563efc45d0883327d0f
SHA1

884cbb8c763c14b70cc7ba33601165fb81ea40b7
SHA256

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115
SHA512

84eb98fb2d712644c661c9ba531d78cba54f798055afea28579210b0aaa5cb2a8765b67e8d490dfca6878c8375eb6cbafaa7e6411e74cec24d28ce18a1eb5c54
SSDEEP

98304:SEjlmQbfgSgwvSnN4iVJu+0xGZ6twFquI3rFq1:SEjgQPXqdEtwYf3rFq1

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

pid process

5056 ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe
Enumerates connected drives 3 TTPs 1 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

Processes:

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

description ioc process

File opened (read-only) \??\F: ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.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
T1542.003

Processes:

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

description ioc process

File opened for modification \??\PhysicalDrive0 ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

description	ioc	process
File opened (read-only)	\??\F:	ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

pid	process
5056	ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe
5056	ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe

C:\Users\Admin\AppData\Local\Temp\ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe
"C:\Users\Admin\AppData\Local\Temp\ffbf083830ba99ced25d22f9a290c19d9b529ecd925f274bd75175bba9c14115.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:5056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll

Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

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