341ff8f5dbe70bc1acbc40cd367d2aa65f88a98375bce262d5381d3c47447460

Analysis

max time kernel
122s
max time network
131s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 01:36

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General

Target

3974b6572a8a98cb09776b5aac59a22b.exe
Size

34.0MB
MD5

3974b6572a8a98cb09776b5aac59a22b
SHA1

fa15c8b7bb8e02d3e514c4e43532a950e17ad4da
SHA256

341ff8f5dbe70bc1acbc40cd367d2aa65f88a98375bce262d5381d3c47447460
SHA512

5d5bf1615611324495d087a115bd3a1edd7a625f49f604974ee2e666348073c6147e1a79c18b01eea9bd9b473f7886357b996e6971edd4d6331a7f5eb9a8d463
SSDEEP

786432:9wYnIe84d7m8/Mw5CaXv2S3IPlv5OqlICX1atGLJcez+yzT:9wYn7dX/uyv28Id5PlIQk0qeyOT

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

Processes:

3974b6572a8a98cb09776b5aac59a22b.exe

pid process

1812 3974b6572a8a98cb09776b5aac59a22b.exe
1812 3974b6572a8a98cb09776b5aac59a22b.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:

3974b6572a8a98cb09776b5aac59a22b.exe

description ioc process

File opened for modification \??\PhysicalDrive0 3974b6572a8a98cb09776b5aac59a22b.exe

pid	process
1812	3974b6572a8a98cb09776b5aac59a22b.exe
1812	3974b6572a8a98cb09776b5aac59a22b.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	3974b6572a8a98cb09776b5aac59a22b.exe

Drops file in Program Files directory 2 IoCs

Processes:

3974b6572a8a98cb09776b5aac59a22b.exe

description	ioc	process
File created	C:\Program Files (x86)\LuDaShi\{AAEBBA00-0C3F-4549-B2D7-A0E8CF469176}.tf	3974b6572a8a98cb09776b5aac59a22b.exe
File created	C:\Program Files (x86)\LuDaShi\{89F2C584-FF8B-4745-8FEB-C3BDD9A9E09F}.tmp\{4E2387CB-1F38-4ef4-BFD9-1AD6B94BA5AC}.tf	3974b6572a8a98cb09776b5aac59a22b.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2512 1812 WerFault.exe 3974b6572a8a98cb09776b5aac59a22b.exe

pid	pid_target	process	target process
2512	1812	WerFault.exe	3974b6572a8a98cb09776b5aac59a22b.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3974b6572a8a98cb09776b5aac59a22b.exe

description	pid	process	target process
PID 1812 wrote to memory of 2512	1812	3974b6572a8a98cb09776b5aac59a22b.exe	WerFault.exe
PID 1812 wrote to memory of 2512	1812	3974b6572a8a98cb09776b5aac59a22b.exe	WerFault.exe
PID 1812 wrote to memory of 2512	1812	3974b6572a8a98cb09776b5aac59a22b.exe	WerFault.exe
PID 1812 wrote to memory of 2512	1812	3974b6572a8a98cb09776b5aac59a22b.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\3974b6572a8a98cb09776b5aac59a22b.exe
"C:\Users\Admin\AppData\Local\Temp\3974b6572a8a98cb09776b5aac59a22b.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 1100
2⤵
- Program crash
PID:2512

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

\Users\Admin\AppData\Local\Temp\{08DE9161-DC0B-44b2-9D4D-990665A44287}.tmp\7z.dll
Filesize
1.1MB

MD5
2888126384d873cc49af32bbe34bb296

SHA1
fe74877bcaec93c7d67dab2ce8c86cfc38402d22

SHA256
aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

SHA512
f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

Download Submit
\Users\Admin\AppData\Local\Temp\{D97298A6-F2AE-4e3f-BE35-8E0F0F541E4B}.tmp\NetBridge.dll
Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
memory/1812-40-0x00000000001A0000-0x00000000001A1000-memory.dmp

Filesize
4KB

Download