173043cc55e569c8f997b16752383ecb66ec62f12b9c5f89deb2840542a8fb71

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 15:15

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General

Target

173043cc55e569c8f997b16752383ecb66ec62f12b9c5f89deb2840542a8fb71.dll
Size

1.9MB
MD5

bc314d07b2ab0ecd11062119144fd4eb
SHA1

d5cc56d9ef8b8dd89eb6386347186f3af679b090
SHA256

173043cc55e569c8f997b16752383ecb66ec62f12b9c5f89deb2840542a8fb71
SHA512

5a9b63fd2e956e53ced90c3a66fb7d31b4fe9eae7f2532e634cf06f76345c63667a4d0e1e51f749444ff5f1066b6130503e8deff805defe3eb982a64e7fbff8c
SSDEEP

24576:fqJWkMm1vw+2ixo2e2tDBGgu2jU0698/Nx/NOfTCr4FtWsFNJqJfhsOnC7KdAv:fGY+02eQDXu2jU0f/1r4RPqJfhCK2

Score

7^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4252	winÖ§³Ö¿â.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.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	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4544	2884	WerFault.exe	88

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2884	rundll32.exe
4252	winÖ§³Ö¿â.exe
4252	winÖ§³Ö¿â.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 2884	4748	rundll32.exe	88
PID 4748 wrote to memory of 2884	4748	rundll32.exe	88
PID 4748 wrote to memory of 2884	4748	rundll32.exe	88
PID 2884 wrote to memory of 4252	2884	rundll32.exe	89
PID 2884 wrote to memory of 4252	2884	rundll32.exe	89
PID 2884 wrote to memory of 4252	2884	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\173043cc55e569c8f997b16752383ecb66ec62f12b9c5f89deb2840542a8fb71.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4748
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\173043cc55e569c8f997b16752383ecb66ec62f12b9c5f89deb2840542a8fb71.dll,#1
  2⤵
  - Checks whether UAC is enabled
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2884
- - F:\Kugou\winÖ§³Ö¿â.exe
    F:\Kugou\winÖ§³Ö¿â.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:4252
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 768
    3⤵
    - Program crash
    PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2884 -ip 2884
1⤵
PID:4776

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

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Downloads

F:\Kugou\winÖ§³Ö¿â.exe

Filesize
1012KB

MD5
5950290c53caf80d9ae138f83a4990c3

SHA1
4ae9faa080dd555ddb47c662dca352fb35029471

SHA256
8d5f357aa5590f40d4eff0c41c06ebee2a5e96ecbe2308d652a482d29c029b38

SHA512
828f9e374c12ac141c71bb1d5797a0267a44598b07b6b4c9ad6b2b40e7fd071ae02d2bca4ec764dc4d330e0c3397e5fe10bd1242e12a0adbea5a4e79fcbe3b43

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads