b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 19:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.exe
Size

3.5MB
MD5

9cb75a89a8b83dc042cf8b5bfb8d44fb
SHA1

5b2d27911903ec4acb0ebdf6d9a0a03091301ddb
SHA256

b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb
SHA512

e02177a91ee656dc292e60a16af4cbac400edbd827e3584eb79eb11ac8802c2294190e2164bd0801555627283e362ff8a7e24ec488cb3613b9fd91c7cf3d1e6e
SSDEEP

98304:Zev6MvU30Ls8j2N9yUdlgi/KrN7NIq57Yp:Zevy307ab2ZNIq5q

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2164	b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.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

description	ioc	Process
File opened (read-only)	\??\F:	b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2164	b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.exe

C:\Users\Admin\AppData\Local\Temp\b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.exe
"C:\Users\Admin\AppData\Local\Temp\b18207f040e57e6592652ecf1ff2426f3bfe3172da1d78d34c8589d57c424fcb.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:2164

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

Loading Replay Monitor...

Downloads

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

Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

Download Submit
memory/2164-4-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2164-5-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2164-10-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download
memory/2164-11-0x00000000000F0000-0x00000000000FA000-memory.dmp

Filesize
40KB

Download