3efca506a4c725dd30277b0a35b98e244647b04e7af33d0417ad4f19bf29ba9e

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 01:15

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General

Target

uninst.exe
Size

288KB
MD5

5eedf941b1536143a85526ad4763e180
SHA1

330bc61e3cb454893d1812362c38a9c91d3e4148
SHA256

72baaa4155ef536101797f874d8503ebfd93c1ae276be5406f6fee26d4141049
SHA512

e5089ab8e2d9dab9225c944892388069b7ee229f8281a68052351fb364cd998d94a191d9521aa4a411e80ddaf70e85d2ca906b39993c90a401dc7f5aafaa89c5
SSDEEP

6144:de34ed2NJgFF3uI4M/vBjCMpVOoBZ4+qjG:/NJYF3uI429lp974

Score

7^/10

bootkit persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3148	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
3148	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
3148	Au_.exe
3148	Au_.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

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral14/files/0x00080000000233ce-3.dat	nsis_installer_1
behavioral14/files/0x00080000000233ce-3.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
3148	Au_.exe
3148	Au_.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe
3344	mooncake.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3784 wrote to memory of 3148	3784	uninst.exe	82
PID 3784 wrote to memory of 3148	3784	uninst.exe	82
PID 3784 wrote to memory of 3148	3784	uninst.exe	82
PID 3148 wrote to memory of 3344	3148	Au_.exe	87
PID 3148 wrote to memory of 3344	3148	Au_.exe	87
PID 3148 wrote to memory of 3344	3148	Au_.exe	87

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3784
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3148
- - C:\Users\Admin\AppData\Local\Temp\mooncake.exe
    "C:\Users\Admin\AppData\Local\Temp\mooncake.exe" /uninstallsucc
    3⤵
    - Writes to the Master Boot Record (MBR)
    - Suspicious behavior: EnumeratesProcesses
    PID:3344

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\lander.ini

Filesize
433B

MD5
b764df90876fa3be64f03ba0b5e63bdc

SHA1
b1f02b12fd49a056ca01258e47d47f0e2d65e631

SHA256
4abc482aa304d828c3787f958d124ac693c2929543e98908f0cdea7aa165d661

SHA512
1e206d7ed5f17d938e7bb1e3932fb1b35bc73243c6bfa510c392c019b147d8075e26697eecdc2baeb90fd521b70f987f0f8ef09a162b0b8599270e0815a71f03

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso5C79.tmp\FindProcDLL.dll

Filesize
3KB

MD5
8614c450637267afacad1645e23ba24a

SHA1
e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

SHA256
0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

SHA512
af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso5C79.tmp\inetc.dll

Filesize
20KB

MD5
c498ae64b4971132bba676873978de1e

SHA1
92e4009cd776b6c8616d8bffade7668ef3cb3c27

SHA256
5552bdde7e4113393f683ef501e4cc84dccc071bdc51391ea7fa3e7c1d49e4e8

SHA512
8e5ca35493f749a39ceae6796d2658ba10f7d8d9ceca45bb4365b338fabd1dfa9b9f92e33f50c91b0273e66adfbce4b98b09c15fd2473f8b214ed797462333d7

Download Submit
C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
288KB

MD5
5eedf941b1536143a85526ad4763e180

SHA1
330bc61e3cb454893d1812362c38a9c91d3e4148

SHA256
72baaa4155ef536101797f874d8503ebfd93c1ae276be5406f6fee26d4141049

SHA512
e5089ab8e2d9dab9225c944892388069b7ee229f8281a68052351fb364cd998d94a191d9521aa4a411e80ddaf70e85d2ca906b39993c90a401dc7f5aafaa89c5

Download Submit
memory/3148-10-0x0000000010000000-0x0000000010003000-memory.dmp

Filesize
12KB

Download