864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb

Analysis

max time kernel
206s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 01:48

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General

Target

864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb.dll
Size

33KB
MD5

9efd3fd52f20833b9278d5e1bac96a5a
SHA1

4c56b1cad516e4965e076ebcd1c6851a38fedaf2
SHA256

864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb
SHA512

d132e4dee2dc7a3d23bd1a0dbec6407a19d2c4cccc8d027280f1a7fc12377fac58910b7d77b849454abf3f471a99586dad81c5e40d52fdd7884f20c8a830d47f
SSDEEP

768:iAdVo1OwNMZi9LIj5u0hvVqYgr0ziY9m570vi:iAd8OQMAGnvWY9m10vi

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
4328	rundll32.exe
4328	rundll32.exe
4208	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\\rqRHyyYo.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DCA900CF-450B-4E35-9169-66767F2F9D67}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DCA900CF-450B-4E35-9169-66767F2F9D67}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DCA900CF-450B-4E35-9169-66767F2F9D67}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DCA900CF-450B-4E35-9169-66767F2F9D67}\InprocServer32\ = "C:\\Windows\\SysWow64\\rqRHyyYo.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4328	rundll32.exe
4328	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe
4208	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4328	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4328	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4328	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 4328	1852	rundll32.exe	83
PID 1852 wrote to memory of 4328	1852	rundll32.exe	83
PID 1852 wrote to memory of 4328	1852	rundll32.exe	83
PID 4328 wrote to memory of 616	4328	rundll32.exe	5
PID 4328 wrote to memory of 4208	4328	rundll32.exe	84
PID 4328 wrote to memory of 4208	4328	rundll32.exe	84
PID 4328 wrote to memory of 4208	4328	rundll32.exe	84

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb.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:4328
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\rqRHyyYo.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:4208

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\rqRHyyYo.dll

Filesize
33KB

MD5
9efd3fd52f20833b9278d5e1bac96a5a

SHA1
4c56b1cad516e4965e076ebcd1c6851a38fedaf2

SHA256
864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb

SHA512
d132e4dee2dc7a3d23bd1a0dbec6407a19d2c4cccc8d027280f1a7fc12377fac58910b7d77b849454abf3f471a99586dad81c5e40d52fdd7884f20c8a830d47f

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

Filesize
33KB

MD5
9efd3fd52f20833b9278d5e1bac96a5a

SHA1
4c56b1cad516e4965e076ebcd1c6851a38fedaf2

SHA256
864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb

SHA512
d132e4dee2dc7a3d23bd1a0dbec6407a19d2c4cccc8d027280f1a7fc12377fac58910b7d77b849454abf3f471a99586dad81c5e40d52fdd7884f20c8a830d47f

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

Filesize
33KB

MD5
9efd3fd52f20833b9278d5e1bac96a5a

SHA1
4c56b1cad516e4965e076ebcd1c6851a38fedaf2

SHA256
864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb

SHA512
d132e4dee2dc7a3d23bd1a0dbec6407a19d2c4cccc8d027280f1a7fc12377fac58910b7d77b849454abf3f471a99586dad81c5e40d52fdd7884f20c8a830d47f

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

Filesize
33KB

MD5
9efd3fd52f20833b9278d5e1bac96a5a

SHA1
4c56b1cad516e4965e076ebcd1c6851a38fedaf2

SHA256
864c6dbddb0f27eaec629c45d2cb5bee1a3d19666b576989b134e31a54411abb

SHA512
d132e4dee2dc7a3d23bd1a0dbec6407a19d2c4cccc8d027280f1a7fc12377fac58910b7d77b849454abf3f471a99586dad81c5e40d52fdd7884f20c8a830d47f

Download Submit
memory/4208-145-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4208-146-0x00000000005E0000-0x00000000005E5000-memory.dmp

Filesize
20KB

Download
memory/4208-147-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4328-134-0x0000000001290000-0x0000000001295000-memory.dmp

Filesize
20KB

Download
memory/4328-137-0x0000000001431000-0x0000000001434000-memory.dmp

Filesize
12KB

Download
memory/4328-138-0x0000000001430000-0x0000000001440000-memory.dmp

Filesize
64KB

Download
memory/4328-139-0x0000000001440000-0x0000000001445000-memory.dmp

Filesize
20KB

Download
memory/4328-141-0x0000000001290000-0x0000000001295000-memory.dmp

Filesize
20KB

Download
memory/4328-140-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4328-133-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download