69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
10/10/2023, 08:00

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General

Target

69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe
Size

4.8MB
MD5

b537d8d5683a810bd4ffcf5ca06ae49d
SHA1

43f0dc0ba2be113ffac8ecbb50204f7896e2205c
SHA256

69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac
SHA512

e58b1a9f7271396f25d0f00945a52edd3751f3693dd08e8c4df7259bd45f349672579b0cbd484e9cd90a41c4ecc249722032114ff9f84c772a253533e52f1df5
SSDEEP

98304:DIdfiKLegiKBVPG5o28N15nMApRENOJtS1XhvS:4jLdz28N1oISjvS

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe
2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{FF4B1DC2-E7FA-43ed-9044-7DDBDB7CA626}.tmp\{3F69D83D-1D2B-4953-9431-AF592AFD037B}.tf	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe
File created	C:\Program Files (x86)\LuDaShi\{257D754E-EB11-4936-8166-E0B9D7432805}.tf	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2604	2256	WerFault.exe	27

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2604	2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe	28
PID 2256 wrote to memory of 2604	2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe	28
PID 2256 wrote to memory of 2604	2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe	28
PID 2256 wrote to memory of 2604	2256	69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe	28

C:\Users\Admin\AppData\Local\Temp\69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe
"C:\Users\Admin\AppData\Local\Temp\69bbce558e0f0e8ee2af1b37f0040410682c172d5b13e87c100944aa91fadbac.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 772
  2⤵
  - Program crash
  PID:2604

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\{7A4DF859-0CE1-4c4d-AA55-431551650131}.tmp\NetBridge.dll

Filesize
238KB

MD5
8786d469338c30e0ba9fedfc62bd5197

SHA1
5fb12028ceae9772f938e1b98b699f0e02e32718

SHA256
beeaf8b72f7008e9adabacfcd85e32a50747a0dfb5c86802aeb973bd1f5c3d2f

SHA512
5db1e5b78e62cda81a63e8e712e720f87a7c7a539237a55a9098c076f9fb4e0b5adb83383c23657b4ccc90c117e55e3946a399cdf3d15cb94444b203d9d6c45c

Download Submit
\Users\Admin\AppData\Local\Temp\{1A2630B2-E5E3-4bfa-9E1C-034421656EEB}.tmp\7z.dll

Filesize
1.1MB

MD5
2706693dda10c6cc79eed24c56d4e5ef

SHA1
4f34ef1bd49273a0d260b9dab15c73eb0ccb6383

SHA256
0edad8a1af22d5b97c1f324791c86243a6ecce7b5a9d2f30415af99aba9129c3

SHA512
7e7f7ae894528587ba33b6e10999549bb9a2ec2748b5662fa1b8806e5f4ce33af47507b3ef2954f2747a76b5b7c775c1cd671061f577c5016d1f8ba165bbe21c

Download Submit
\Users\Admin\AppData\Local\Temp\{7A4DF859-0CE1-4c4d-AA55-431551650131}.tmp\NetBridge.dll

Filesize
238KB

MD5
8786d469338c30e0ba9fedfc62bd5197

SHA1
5fb12028ceae9772f938e1b98b699f0e02e32718

SHA256
beeaf8b72f7008e9adabacfcd85e32a50747a0dfb5c86802aeb973bd1f5c3d2f

SHA512
5db1e5b78e62cda81a63e8e712e720f87a7c7a539237a55a9098c076f9fb4e0b5adb83383c23657b4ccc90c117e55e3946a399cdf3d15cb94444b203d9d6c45c

Download Submit
memory/2256-27-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads