ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74

Analysis

max time kernel
136s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
13-10-2023 03:01

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General

Target

ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe
Size

3.6MB
MD5

d2f3958a798cd02aa61dc1ab6e01b3c2
SHA1

befc766a4348fba5340759b27b4e724a9e8343ac
SHA256

ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74
SHA512

22e6f4676e5faee044e19612fedf45c05dea5848bd6dbf44cd175b67d7f1267a725d76c1f21c97949712f5321e44b68273f941f0eeddca0cb1390ad804b2d20e
SSDEEP

49152:0EjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWv:0EjlmQbfgSgwvSnN4iVJuo0xjCIFs/qf

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
212	ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.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:	ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.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	ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
212	ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe
212	ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe

C:\Users\Admin\AppData\Local\Temp\ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe
"C:\Users\Admin\AppData\Local\Temp\ed1db584ab866b84ffc0b8f71b70385b6391f24f208e83ae5c44ed46e6b5db74.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:212

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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