f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10-05-2024 23:18

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General

Target

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe
Size

3.4MB
MD5

3a8821701c93b73f10617455ae5424e2
SHA1

7417843c2a69b73f4c5bfcac6caa173cb9df6af7
SHA256

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117
SHA512

b2ce77ab927bfba255f25f46306043e3abf6124ed110347423e9731be62dce6495045b97ef32af5721b46f05abbb500f5b39cf68ebea0d6b89f3d72d2d585a76
SSDEEP

49152:eEjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWO:eEjlmQbfgSgwvSnN4iVJuS0xJdzYUqX

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

pid process

1368 f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.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:

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

description ioc process

File opened (read-only) \??\F: f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.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:

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

description ioc process

File opened for modification \??\PhysicalDrive0 f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

pid process

1368 f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

pid	process
1368	f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

description	ioc	process
File opened (read-only)	\??\F:	f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

pid	process
1368	f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe

C:\Users\Admin\AppData\Local\Temp\f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe
"C:\Users\Admin\AppData\Local\Temp\f631acc686776ff8b89e85780f7c31591522480d764f02bd60520bcf4a42a117.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1368

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

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

Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

Download Submit
memory/1368-7-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/1368-6-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/1368-11-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/1368-10-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download