21c1c5b62ceebdd74177318f5aa3818680e687012d3ca057f410825db313e2ef

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 01:51

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General

Target

Virussign.2024.05.18/virussign.com_08a6c34267000edb55071c7e51c17a95.exe
Size

3.5MB
MD5

08a6c34267000edb55071c7e51c17a95
SHA1

947892f50816df0ae75b176b41546bfa2211f3be
SHA256

06a5779723219112d5532234fb721e39b6d6e7b756a8df6a68c3cc747ba7c588
SHA512

0f8252b3dc63a57498156ac72a031c95999ecd25c744c1031b9eb073ca2c7fe4daa837a5ba8b2c0c88230a11583d670c546a59486ad64642440ef7edf1f7fe76
SSDEEP

49152:ei5SsLpFmYEy67YVLZyxos2huMTkt2pKGi2v2qtbsvl4uJnwXp6Bt7PukT5GM3CW:ei5SIU8BVLUosY4t2pEMp4tKrSzSqD

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

virussign.com_08a6c34267000edb55071c7e51c17a95.exe

pid process

1312 virussign.com_08a6c34267000edb55071c7e51c17a95.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:

virussign.com_08a6c34267000edb55071c7e51c17a95.exe

description ioc process

File opened (read-only) \??\F: virussign.com_08a6c34267000edb55071c7e51c17a95.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:

virussign.com_08a6c34267000edb55071c7e51c17a95.exe

description ioc process

File opened for modification \??\PhysicalDrive0 virussign.com_08a6c34267000edb55071c7e51c17a95.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

virussign.com_08a6c34267000edb55071c7e51c17a95.exe

pid process

1312 virussign.com_08a6c34267000edb55071c7e51c17a95.exe

pid	process
1312	virussign.com_08a6c34267000edb55071c7e51c17a95.exe

description	ioc	process
File opened (read-only)	\??\F:	virussign.com_08a6c34267000edb55071c7e51c17a95.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	virussign.com_08a6c34267000edb55071c7e51c17a95.exe

pid	process
1312	virussign.com_08a6c34267000edb55071c7e51c17a95.exe

C:\Users\Admin\AppData\Local\Temp\Virussign.2024.05.18\virussign.com_08a6c34267000edb55071c7e51c17a95.exe
"C:\Users\Admin\AppData\Local\Temp\Virussign.2024.05.18\virussign.com_08a6c34267000edb55071c7e51c17a95.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1312

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
78KB

MD5
dccc58e47d693a626fe384b86f3ee094

SHA1
2debd41ee7cce88f1ba19768185328a1eed6e841

SHA256
cf42d5b750058d2fe19016db401ee26f6f2ec51a618f68ed231de88cc23cb50e

SHA512
f00d631c3c8c0d2b54a25aa05dc3b863278859c0a1b96293fd1702c6ac0e5aeb4c5daed4ca7378fc9ca5c8f5918b02a3ba19707fe991bf76766575f109fc6d4f

Download Submit
memory/1312-7-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/1312-6-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/1312-10-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/1312-11-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download