7dd08465bf4c332a6376262ad823e1bd554b5b9fe5576826730f5f30ef25dbbe

Analysis

max time kernel
172s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 17:09

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General

Target

7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe
Size

21KB
MD5

7f2fa5e6e1b91cef1abaabf9deb8d8a8
SHA1

30c67e926d87c6b7d56a8b519846147e0ca20cec
SHA256

7dd08465bf4c332a6376262ad823e1bd554b5b9fe5576826730f5f30ef25dbbe
SHA512

8f6b2605a38fc029918c563c40034e82818a92c50fe3d8e76c91d01bfc5ee45295e0509b4bc5e8dcf4ac75c3d8dd000cc5cf083cf05c20bfa3620e180c9bb14d
SSDEEP

384:gKHlpQxVmFDAKOPQ6htarqUOfkpSS/eJEeBVkStMRqKC8IoVfU9XfPdi555J4197:FQxsFDXiQ6WrqV+/e2CVhJX9XfPdi556

Score

8^/10

persistence

Malware Config

Signatures

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\ysihqg68.sys	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe
File opened for modification	C:\Windows\SysWOW64\drivers\ysihqg68.sys	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ysihqg68\ImagePath = "system32\\\\drivers\\\\ysihqg68.sys"	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	Rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ysihqg68.dll	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe
File opened for modification	C:\Windows\SysWOW64\ysihqg68.dll	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\DVL	Rundll32.exe
File created	C:\Windows\fn00321.log	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2280	Rundll32.exe
2280	Rundll32.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
652	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	Rundll32.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 2280	5052	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe	88
PID 5052 wrote to memory of 2280	5052	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe	88
PID 5052 wrote to memory of 2280	5052	7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe	88
PID 2280 wrote to memory of 3380	2280	Rundll32.exe	49
PID 2280 wrote to memory of 3380	2280	Rundll32.exe	49

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3380
- C:\Users\Admin\AppData\Local\Temp\7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe
  "C:\Users\Admin\AppData\Local\Temp\7f2fa5e6e1b91cef1abaabf9deb8d8a8.exe"
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:5052
- - C:\Windows\SysWOW64\Rundll32.exe
    C:\Windows\system32\\Rundll32.exe "C:\Windows\system32\\ysihqg68.dll",DllCanUnloadNow
    3⤵
    - Loads dropped DLL
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ysihqg68.dll

Filesize
12KB

MD5
ec03c4006e402e8b0d21091635c9d317

SHA1
af280b9ab2eb97352e70f15e15f2fa6b8bf339aa

SHA256
1213183b9205d87fffffc5172c4c12123d26a1d7b9721c5362829301d7b51f9e

SHA512
c864f117ccaca6422227e9efeb60c2fb2c0ce845a6b3a90ccd590bb2c26ee6c99f85ea6f44c00ec755e2588c583c4f2465749d9f7bfd0dba02c76e628d350b6b

Download Submit
memory/5052-0-0x0000000000400000-0x00000000004056A0-memory.dmp

Filesize
21KB

Download
memory/5052-19-0x0000000000400000-0x00000000004056A0-memory.dmp

Filesize
21KB

Download
memory/5052-21-0x0000000000400000-0x00000000004056A0-memory.dmp

Filesize
21KB

Download