42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5

Analysis

max time kernel
127s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26-05-2024 16:53

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General

Target

42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe
Size

4.8MB
MD5

a83ce55de43bb3e7c15aaf7d53b1befa
SHA1

6daf0f4ff9da79bb9615b7d9fed05160416ee0c3
SHA256

42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5
SHA512

29251dddd12d6f83ed3a34f40d78592aa205e4b56dac9298f7775b9443b2b62c5af5c77fa36f9ddb1e2561414187cff4acbbf3aff91c511ff92031328edafacc
SSDEEP

98304:seLpmrmc2lAu28lkcf5YjovKqGYiOE8oLj5YINfSyo8aXl:TcmZl85gyjovK65E8ob5Sx8aXl

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

Processes:

42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe

pid	process
4456	42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe
4456	42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe
4456	42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.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:

42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe

description ioc process

File opened for modification \??\PhysicalDrive0 42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	\??\PhysicalDrive0	42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe

C:\Users\Admin\AppData\Local\Temp\42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe
"C:\Users\Admin\AppData\Local\Temp\42ef9f739531f8bfeb18962921396292488c15c45a86b898a8c090d7a1e2cab5.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
PID:4456

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\LDSGameMaster\Store\360Base\360NetUL.dll
Filesize
234KB

MD5
cd03029957ebc78c0ca7a6c02a9ca846

SHA1
0044114b8073781479044f0294701be9611be2ac

SHA256
139fdd92e6ddf1aac0761a68502b374daa32e82039621018511dc491ed9b4048

SHA512
14c641cb9536def0ddc1969d50b97b83a23017c97373e3ad74d3fbf9825ac81f3fdf8169281c8ad4cebd45d9c9ae05f752d553ba4653e620889b274479cb7c32

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C:\Users\Admin\AppData\Local\LDSGameMaster\Store\360Base\Utils\LDSBasic.dll
Filesize
2.1MB

MD5
c35ab236702291f1a2d090af8ea253d9

SHA1
d7f58f0f5fee6b26564af3c5d7ab6defe5a4608d

SHA256
c4dba892a9a1fb675d06dd615c4fc079e9f4e12a8368e8bd18e37137ed567f35

SHA512
87a3fa1927ad2fad117055411a471be95275a4d4bf99ee3ab522faee70067b239bb77ddd94c4300958607efd4a3fc071df2262754557fca2530e70f2c438a068

Download Submit
C:\Users\Admin\AppData\Local\Temp\{CE76BE08-FD57-46b7-8B68-013D1BBC6B16}.tmp\7z.dll
Filesize
1.1MB

MD5
a46135bdd574092d85955070e72d5aad

SHA1
aad137b0a883fea22b7118778512ffc7865513bc

SHA256
aa57160684feb240a85da677caaf7cf6a08b7349d89ae9cb4a3476884d80aac5

SHA512
72188f348d9ae33e2b5a7886c80667cc3015bfac170249537baa9e31abf8d63ca198903206feb64887f1d509a1b9bfc9f54ede8b3aa26bee3f5c4375e5c6a24b

Download Submit