73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 10:38

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General

Target

73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe
Size

10.0MB
MD5

bce43d1f6384617c9b48f3b2f489ed85
SHA1

cd1f8917641d3dcad85a7be4b39ad4d7fb0949e8
SHA256

73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9
SHA512

6999216cf273c7143233c994871b6bfc06bfe22ab2941070f8bb3a7c0f376f183abcbbbe381c863bce1ec33778c5711a6154ad691cdd70c63008310ccbdf164c
SSDEEP

196608:nPx1dx2f9MmzHwuokrcjoW7KHwhFlz2m3+i3dzjJEr:n+f9Mmz1xWKHG2m3PJtEr

Score

7^/10

bootkit discovery persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe
2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.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	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LuDaShi\{7827E103-8708-4475-8628-61DD99B6A687}.tf	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe
File created	C:\Program Files (x86)\LuDaShi\{59754265-1136-4c99-B802-81658BD72C7E}.tmp\{1B8652B4-D1C0-43f7-A5C9-E918B97DF8D7}.tf	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2156	2196	WerFault.exe	27

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2156	2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe	28
PID 2196 wrote to memory of 2156	2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe	28
PID 2196 wrote to memory of 2156	2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe	28
PID 2196 wrote to memory of 2156	2196	73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe	28

C:\Users\Admin\AppData\Local\Temp\73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe
"C:\Users\Admin\AppData\Local\Temp\73e36a2a49d6dd231a294b9d93aa7d8ebf272a17eb0a4a27d5f76f99ab7167e9.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 876
  2⤵
  - Program crash
  PID:2156

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\{07D4C24F-DEAE-4bcd-838C-4700E80615A7}.tmp\NetBridge.dll

Filesize
231KB

MD5
9d145902fb5b9a6da62ac85761434e31

SHA1
c817d77f59e3767d75cf5f5298d6b5711308f7e5

SHA256
98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

SHA512
bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9

Download Submit
\Users\Admin\AppData\Local\Temp\{FAAB8470-693B-4d68-8D3E-EAA2114F2B89}.tmp\7z.dll

Filesize
237KB

MD5
e8955e395ab5a6800447fe8256bb461e

SHA1
bf6e5dc3007167f4b768f75a3319e4026ed76410

SHA256
cf842130c2cf49ba5a12a33b4a1ec984e31a54c98f7d7aaf431c2ae5ea677e6c

SHA512
18cedfb8ca5b522a5b3a1dbd2de78c694feb231eeb547ab1c52510a8ec93d2a77edae7a296e0145f4918f995fd0819947d0ade26b88e09ac8e1cd257a556bdf1

Download Submit
memory/2196-27-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads