a45ea70c7d396771c6372030f9a39af27b53d87865ae931b6119d50eacab1740

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 02:17

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General

Target

71e8f3e0b9646453d4472988b34cf168.exe
Size

43.5MB
MD5

71e8f3e0b9646453d4472988b34cf168
SHA1

8afc899197fff97a84427c7d7a15b07126bbd911
SHA256

a45ea70c7d396771c6372030f9a39af27b53d87865ae931b6119d50eacab1740
SHA512

946e0c377f5f39119a9baedf16ee83692a7c6d764b167535a0b0049ae604536e1ef8c6c903305d78a24c6488760853d627065c6ae81927f53655e1006098a73c
SSDEEP

786432:9wYnIe84d7m8/Mw5CaXv2S3IPlv5OqlICX1atGLJcez+yzqFqikJaaZRTdcH+wEb:9wYn7dX/uyv28Id5PlIQk0qeyOq8DrRv

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

Processes:

71e8f3e0b9646453d4472988b34cf168.exe

pid process

2424 71e8f3e0b9646453d4472988b34cf168.exe
2424 71e8f3e0b9646453d4472988b34cf168.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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:

71e8f3e0b9646453d4472988b34cf168.exe

description ioc process

File opened for modification \??\PhysicalDrive0 71e8f3e0b9646453d4472988b34cf168.exe

pid	process
2424	71e8f3e0b9646453d4472988b34cf168.exe
2424	71e8f3e0b9646453d4472988b34cf168.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	71e8f3e0b9646453d4472988b34cf168.exe

Drops file in Program Files directory 2 IoCs

Processes:

71e8f3e0b9646453d4472988b34cf168.exe

description	ioc	process
File created	C:\Program Files (x86)\LuDaShi\{A07E5EAA-7293-4216-B347-00A81FD34A33}.tf	71e8f3e0b9646453d4472988b34cf168.exe
File created	C:\Program Files (x86)\LuDaShi\{8C816390-85F4-411e-BDA2-FFEEF3AF0C23}.tmp\{AD3CC333-8E14-452b-B3C2-A06756E25E14}.tf	71e8f3e0b9646453d4472988b34cf168.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2800 2424 WerFault.exe 71e8f3e0b9646453d4472988b34cf168.exe

pid	pid_target	process	target process
2800	2424	WerFault.exe	71e8f3e0b9646453d4472988b34cf168.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

71e8f3e0b9646453d4472988b34cf168.exe

description	pid	process	target process
PID 2424 wrote to memory of 2800	2424	71e8f3e0b9646453d4472988b34cf168.exe	WerFault.exe
PID 2424 wrote to memory of 2800	2424	71e8f3e0b9646453d4472988b34cf168.exe	WerFault.exe
PID 2424 wrote to memory of 2800	2424	71e8f3e0b9646453d4472988b34cf168.exe	WerFault.exe
PID 2424 wrote to memory of 2800	2424	71e8f3e0b9646453d4472988b34cf168.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\71e8f3e0b9646453d4472988b34cf168.exe
"C:\Users\Admin\AppData\Local\Temp\71e8f3e0b9646453d4472988b34cf168.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2424 -s 1036
2⤵
- Program crash
PID:2800

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

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lds_setup.log
Filesize
948B

MD5
d922a89e119ec1dea06b5b48003db637

SHA1
febd06c9d9539e2972293be5cce92d7c26fa4b2c

SHA256
db10784d40f8edcb62dc58ef8c0413d86931470f8cc4ed554f2c673675fcab26

SHA512
5299893ed51f6fc14196cbaeff7cef196aa1476fcca20b3795e36dc56006b6c58b4bbb69ca1ca0cf9fa0d99f247bd84e9444cf1d689e95203e6731ee24157e50

Download Submit
\Users\Admin\AppData\Local\Temp\{85488B63-1AEF-47d1-8936-387BFA5A3D4D}.tmp\NetBridge.dll
Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{B38E1DB9-7502-45a8-816D-16CCC8C3EF30}.tmp\7z.dll
Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
memory/2424-40-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download