7b0488c2766c7fa58ff8e3d2ef8a3b0d2546eec32775304b779de94fbc996014

Analysis

max time kernel
103s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
22/07/2024, 09:14

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General

Target

8f1d680385a2214ef98d894e1c40a9f0N.exe
Size

139KB
MD5

8f1d680385a2214ef98d894e1c40a9f0
SHA1

2e44971493cf988a187a609f12dffa3494d34fcb
SHA256

7b0488c2766c7fa58ff8e3d2ef8a3b0d2546eec32775304b779de94fbc996014
SHA512

f8bdaad26b50b80253b74480e043d0a709d9a0b6d7fec485f8e6362145d4dd99df7b3f5bf9db7443e08066d6e834129d03d0da5383fc3b3d2c079b0dea723ec0
SSDEEP

1536:rC2/fYuPfbESFYXRWhpKRycRd57JkIqFHhzm4hWru/BzihhMN45MF5FvHP132xPi:r7YubEwYXRWhpAJUHhzm4hUukS6Kmeco

Score

8^/10

evasion execution

Malware Config

Signatures

Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
1456	smss.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	8f1d680385a2214ef98d894e1c40a9f0N.exe
File opened for modification	C:\Windows\SysWOW64\1230\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\Service.exe	smss.exe

Launches sc.exe 4 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
316	sc.exe
2432	sc.exe
4068	sc.exe
1820	sc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5104	8f1d680385a2214ef98d894e1c40a9f0N.exe
1456	smss.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 4068	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	84
PID 5104 wrote to memory of 4068	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	84
PID 5104 wrote to memory of 4068	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	84
PID 5104 wrote to memory of 1820	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	86
PID 5104 wrote to memory of 1820	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	86
PID 5104 wrote to memory of 1820	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	86
PID 5104 wrote to memory of 1456	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	88
PID 5104 wrote to memory of 1456	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	88
PID 5104 wrote to memory of 1456	5104	8f1d680385a2214ef98d894e1c40a9f0N.exe	88
PID 1456 wrote to memory of 316	1456	smss.exe	89
PID 1456 wrote to memory of 316	1456	smss.exe	89
PID 1456 wrote to memory of 316	1456	smss.exe	89
PID 1456 wrote to memory of 2432	1456	smss.exe	91
PID 1456 wrote to memory of 2432	1456	smss.exe	91
PID 1456 wrote to memory of 2432	1456	smss.exe	91

C:\Users\Admin\AppData\Local\Temp\8f1d680385a2214ef98d894e1c40a9f0N.exe
"C:\Users\Admin\AppData\Local\Temp\8f1d680385a2214ef98d894e1c40a9f0N.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop SharedAccess
  2⤵
  - Launches sc.exe
  PID:4068
- C:\Windows\SysWOW64\sc.exe
  C:\Windows\system32\sc.exe stop wscsvc
  2⤵
  - Launches sc.exe
  PID:1820
- C:\Windows\SysWOW64\1230\smss.exe
  C:\Windows\system32\1230\smss.exe -d
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop SharedAccess
    3⤵
    - Launches sc.exe
    PID:316
- - C:\Windows\SysWOW64\sc.exe
    C:\Windows\system32\sc.exe stop wscsvc
    3⤵
    - Launches sc.exe
    PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Windows\SysWOW64\1230\smss.exe

Filesize
139KB

MD5
15a2b289989e5c4acd91b29b9bf73c10

SHA1
a83e7e058bd21565d0b6ce691da5c0f455771553

SHA256
f5319a7f47aad87371626d1e57015d41f8484bcee5c141e6661e710d2e6f0bcd

SHA512
284ab5f5a236592d8b3142cd8e03bd8487e3116fc8565c6628963b3e2b6898266cb204281ffb5a58b9d9fdc2041edae728c5250a60b2816461dd11131e5f3deb

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