24739f97f534442d06cc8c376a83ea63e8f9afe2eacd81a6d938d8ff1a63f0f8

Analysis

max time kernel
150s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 02:13

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General

Target

7be117822256b553ae76c7db698bde98.dll
Size

25KB
MD5

7be117822256b553ae76c7db698bde98
SHA1

9b0128894e5134cae714b9b41841f1b96f8d3f4f
SHA256

24739f97f534442d06cc8c376a83ea63e8f9afe2eacd81a6d938d8ff1a63f0f8
SHA512

5997c6ce79b17cff757d8e86ea3534fce3217293bc2341ec81f497bf91d0399d6e3af64d93913e2345ce37d950cef65afd8e1155497c465d27ee67fe6295afa4
SSDEEP

768:uYgQlevpDiSK6pX9B6U9E0G6xEpYHFSFW:lleh9KWHVKJFW

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
4384	rundll32.exe
4384	rundll32.exe
5040	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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

Drops file in System32 directory 2 IoCs

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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32\ = "C:\\Windows\\SysWow64\\qoMdCsSk.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{833AE189-F38C-46B6-B02A-18DBEBB50349}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4384	rundll32.exe
4384	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe
5040	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4384	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4384	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4384	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 4384	4548	rundll32.exe	85
PID 4548 wrote to memory of 4384	4548	rundll32.exe	85
PID 4548 wrote to memory of 4384	4548	rundll32.exe	85
PID 4384 wrote to memory of 624	4384	rundll32.exe	3
PID 4384 wrote to memory of 5040	4384	rundll32.exe	97
PID 4384 wrote to memory of 5040	4384	rundll32.exe	97
PID 4384 wrote to memory of 5040	4384	rundll32.exe	97

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:624

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7be117822256b553ae76c7db698bde98.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7be117822256b553ae76c7db698bde98.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:4384
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\qoMdCsSk.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:5040

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\qoMdCsSk.dll

Filesize
25KB

MD5
7be117822256b553ae76c7db698bde98

SHA1
9b0128894e5134cae714b9b41841f1b96f8d3f4f

SHA256
24739f97f534442d06cc8c376a83ea63e8f9afe2eacd81a6d938d8ff1a63f0f8

SHA512
5997c6ce79b17cff757d8e86ea3534fce3217293bc2341ec81f497bf91d0399d6e3af64d93913e2345ce37d950cef65afd8e1155497c465d27ee67fe6295afa4

Download Submit
memory/4384-0-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4384-1-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4384-2-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4384-9-0x0000000000AB0000-0x0000000000AC2000-memory.dmp

Filesize
72KB

Download
memory/4384-10-0x0000000000AB0000-0x0000000000AC2000-memory.dmp

Filesize
72KB

Download
memory/4384-11-0x0000000000AB0000-0x0000000000AC2000-memory.dmp

Filesize
72KB

Download
memory/5040-19-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5040-18-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5040-20-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/5040-21-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download