9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e

Analysis

max time kernel
152s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2022 11:33

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General

Target

9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e.dll
Size

23KB
MD5

5be091dc6f9811bfe50c0d0cd549b20f
SHA1

688ab978e244a66634146204dde0856cb47b6423
SHA256

9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e
SHA512

d79c510bcb827acea8117a68f6815d7490d6ed89f620da3301f8139da0afb463b148d8dd36f7a22db8d2751e75c7fa9c9e6bf106e24380d9631013b90836d893
SSDEEP

384:PSnCmpE8oJ1b8Ga+6x9DfrrbDJjQJSRFyJdyKKsByihXUOdIBKKNU:PQ1UeGa+mZnJjES3yJdlKWyiyOdKKoU

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
2344	rundll32.exe
2344	rundll32.exe
2448	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\ddcDwwtR.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ddcDwwtR.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ddcDwwtR.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F20AEF6-27F1-4933-9992-A26BA52672A8}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F20AEF6-27F1-4933-9992-A26BA52672A8}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F20AEF6-27F1-4933-9992-A26BA52672A8}\InprocServer32\ = "C:\\Windows\\SysWow64\\ddcDwwtR.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F20AEF6-27F1-4933-9992-A26BA52672A8}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2344	rundll32.exe
2344	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe
2448	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2344	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2344	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2344	2044	rundll32.exe	82
PID 2044 wrote to memory of 2344	2044	rundll32.exe	82
PID 2044 wrote to memory of 2344	2044	rundll32.exe	82
PID 2344 wrote to memory of 580	2344	rundll32.exe	5
PID 2344 wrote to memory of 2448	2344	rundll32.exe	87
PID 2344 wrote to memory of 2448	2344	rundll32.exe	87
PID 2344 wrote to memory of 2448	2344	rundll32.exe	87

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:580

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\ddcDwwtR.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:2448

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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\ddcDwwtR.dll

Filesize
23KB

MD5
5be091dc6f9811bfe50c0d0cd549b20f

SHA1
688ab978e244a66634146204dde0856cb47b6423

SHA256
9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e

SHA512
d79c510bcb827acea8117a68f6815d7490d6ed89f620da3301f8139da0afb463b148d8dd36f7a22db8d2751e75c7fa9c9e6bf106e24380d9631013b90836d893

Download Submit
C:\Windows\SysWOW64\ddcDwwtR.dll

Filesize
23KB

MD5
5be091dc6f9811bfe50c0d0cd549b20f

SHA1
688ab978e244a66634146204dde0856cb47b6423

SHA256
9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e

SHA512
d79c510bcb827acea8117a68f6815d7490d6ed89f620da3301f8139da0afb463b148d8dd36f7a22db8d2751e75c7fa9c9e6bf106e24380d9631013b90836d893

Download Submit
C:\Windows\SysWOW64\ddcDwwtR.dll

Filesize
23KB

MD5
5be091dc6f9811bfe50c0d0cd549b20f

SHA1
688ab978e244a66634146204dde0856cb47b6423

SHA256
9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e

SHA512
d79c510bcb827acea8117a68f6815d7490d6ed89f620da3301f8139da0afb463b148d8dd36f7a22db8d2751e75c7fa9c9e6bf106e24380d9631013b90836d893

Download Submit
C:\Windows\SysWOW64\ddcDwwtR.dll

Filesize
23KB

MD5
5be091dc6f9811bfe50c0d0cd549b20f

SHA1
688ab978e244a66634146204dde0856cb47b6423

SHA256
9961c574a6317608e028d9b96c77b1c2f8f0a4a78c3e47a0a83281036a7d728e

SHA512
d79c510bcb827acea8117a68f6815d7490d6ed89f620da3301f8139da0afb463b148d8dd36f7a22db8d2751e75c7fa9c9e6bf106e24380d9631013b90836d893

Download Submit
memory/2344-135-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/2344-136-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download
memory/2448-140-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download