56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc

Analysis

max time kernel
91s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2023, 09:48

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General

Target

56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe
Size

3.4MB
MD5

6362fd88d0f2dca17907f3b0452d107d
SHA1

d002f14f1ad75541da642c33c9a44982618c6585
SHA256

56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc
SHA512

6a71cd101615cd22f47daf45bbfd61209c6d3e167a62eea6a50b045b0a96b18ce5e1c77543c3110a5b450afe00d15453fdc267ce496962f281b5a08418a3e26b
SSDEEP

49152:DevyHt8vnzLe5305uqs82SEg2N9yxuoAcgSpePhm0eNSIkZPlgivvIPHZT5d5Lh4:Dev6MvU30Ls8j2N9yUdlgiZdi1pq57YY

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1456	56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.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:	56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.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	56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1456	56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe
1456	56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe

C:\Users\Admin\AppData\Local\Temp\56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe
"C:\Users\Admin\AppData\Local\Temp\56c2d36980cc55582ed07fb7671d209a524635a3303ffba7e6253c6344829dfc.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1456

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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