d7031e34565039d24d964eba5fe6158f576186a5b42237a2c937f7dbd43b7326

Analysis

max time kernel
156s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 03:18

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General

Target

261aa3ec450cb6a8caae855dac89dc6c.dll
Size

124KB
MD5

261aa3ec450cb6a8caae855dac89dc6c
SHA1

9262f0acd8693e9f6264c154a36aeb479b64d4d2
SHA256

d7031e34565039d24d964eba5fe6158f576186a5b42237a2c937f7dbd43b7326
SHA512

21bc277dd400f96d3279f7420cc26ca2c8453b0dcfb8d99b6ea07c97a0e8bdcd0873692cc14d61833fb8bb9d07cee86935db61289d184b8c1e46e109f1af0817
SSDEEP

3072:2whO90vnEt7hOckPGyvvjNRxawvNhZyOlRXJdg+2AZaMVyu5:2whh/0FhkPpTTvNhVg+cMv

Score

6^/10

persistence

Malware Config

Signatures

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\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\Kritixowe = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\261aa3ec450cb6a8caae855dac89dc6c.dll\",Startup"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2716	rundll32.exe
2716	rundll32.exe
2716	rundll32.exe
2716	rundll32.exe
2716	rundll32.exe
2716	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2716	rundll32.exe
1632	rundll32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2208 wrote to memory of 2716	2208	rundll32.exe	27
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30
PID 2716 wrote to memory of 1632	2716	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\261aa3ec450cb6a8caae855dac89dc6c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\261aa3ec450cb6a8caae855dac89dc6c.dll,#1
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\261aa3ec450cb6a8caae855dac89dc6c.dll",iep
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1632

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

memory/1632-9-0x00000000001B0000-0x00000000001F0000-memory.dmp

Filesize
256KB

Download
memory/1632-8-0x00000000001B0000-0x00000000001F0000-memory.dmp

Filesize
256KB

Download
memory/1632-11-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download
memory/1632-14-0x00000000001B0000-0x00000000001F0000-memory.dmp

Filesize
256KB

Download
memory/2716-1-0x0000000001E80000-0x0000000001EC0000-memory.dmp

Filesize
256KB

Download
memory/2716-0-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download
memory/2716-2-0x0000000001E80000-0x0000000001EC0000-memory.dmp

Filesize
256KB

Download
memory/2716-3-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download
memory/2716-5-0x0000000001E80000-0x0000000001EC0000-memory.dmp

Filesize
256KB

Download
memory/2716-7-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download
memory/2716-10-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download