3efca506a4c725dd30277b0a35b98e244647b04e7af33d0417ad4f19bf29ba9e

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
856	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
856	Au_.exe

Loads dropped DLL 6 IoCs

pid	Process
2524	uninst.exe
856	Au_.exe
856	Au_.exe
856	Au_.exe
856	Au_.exe
856	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
behavioral13/files/0x0039000000015d56-2.dat	nsis_installer_1
behavioral13/files/0x0039000000015d56-2.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
856	Au_.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe
2792	mooncake.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
856	Au_.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 2524 wrote to memory of 856	2524	uninst.exe	28
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30
PID 856 wrote to memory of 2792	856	Au_.exe	30

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2524
- 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 behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:856
- - 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:2792

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
5e1bcda1117901ec24e09661cd01dcb5

SHA1
9d53c9a56c26e1bde8a705a9452a914059800506

SHA256
d98833975d45302b65ee7f251f09ed01c45eb90c94de053c1f5da486e2934593

SHA512
b698364f345216f0f7e67ccbc6061417dc415491cca93194cc4b90cbfc53ece26eaf085a5ea2950273bd149f8ee6dfdd5eaad29272829cd1d1f3534d482a7fdf

Download Submit
\Users\Admin\AppData\Local\Temp\nst3C08.tmp\FindProcDLL.dll

Filesize
3KB

MD5
8614c450637267afacad1645e23ba24a

SHA1
e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

SHA256
0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

SHA512
af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

Download Submit
\Users\Admin\AppData\Local\Temp\nst3C08.tmp\inetc.dll

Filesize
20KB

MD5
c498ae64b4971132bba676873978de1e

SHA1
92e4009cd776b6c8616d8bffade7668ef3cb3c27

SHA256
5552bdde7e4113393f683ef501e4cc84dccc071bdc51391ea7fa3e7c1d49e4e8

SHA512
8e5ca35493f749a39ceae6796d2658ba10f7d8d9ceca45bb4365b338fabd1dfa9b9f92e33f50c91b0273e66adfbce4b98b09c15fd2473f8b214ed797462333d7

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

Filesize
288KB

MD5
5eedf941b1536143a85526ad4763e180

SHA1
330bc61e3cb454893d1812362c38a9c91d3e4148

SHA256
72baaa4155ef536101797f874d8503ebfd93c1ae276be5406f6fee26d4141049

SHA512
e5089ab8e2d9dab9225c944892388069b7ee229f8281a68052351fb364cd998d94a191d9521aa4a411e80ddaf70e85d2ca906b39993c90a401dc7f5aafaa89c5

Download Submit
memory/856-15-0x0000000010000000-0x0000000010003000-memory.dmp

Filesize
12KB

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