24ffc9be8fffa0524984a90a71492d1a7c458cead1a419ff983dbf343fa1be06

Analysis

max time kernel
92s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 17:01

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General

Target

virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe
Size

74KB
MD5

cdd6acb0f24454c0bcde978d2c694600
SHA1

63c691abb35c636f3b6bc231e4a366bd01f8562a
SHA256

24ffc9be8fffa0524984a90a71492d1a7c458cead1a419ff983dbf343fa1be06
SHA512

3e2eeecc6551660f7b02a492449cc9e957ae1365d64a9d528744374a8c9252031e2f86eb592b3216eb0454939495a3ecf3357a5066b657600a3e2fe72ab563cb
SSDEEP

1536:kP6RJLbSshapMJgK+hxaZUux1imfJPtOrqm1s/XZydNg:06RJz25KnZFvVfJPtOrqm2/XZuu

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4364	winlgon.exe

Adds Run key to start application 2 TTPs 2 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\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
244	4364	WerFault.exe	84
4936	4364	WerFault.exe	84
2752	5016	WerFault.exe	83

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5016	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe
4364	winlgon.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 4364	5016	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe	84
PID 5016 wrote to memory of 4364	5016	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe	84
PID 5016 wrote to memory of 4364	5016	virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe	84

C:\Users\Admin\AppData\Local\Temp\virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_cdd6acb0f24454c0bcde978d2c694600.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5016
- \??\c:\users\admin\appdata\local\temp\winlgon.exe
  c:\users\admin\appdata\local\temp\winlgon.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4364
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 676
    3⤵
    - Program crash
    PID:244
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4364 -s 696
    3⤵
    - Program crash
    PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 592
  2⤵
  - Program crash
  PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4364 -ip 4364
1⤵
PID:4180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4364 -ip 4364
1⤵
PID:4932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 5016 -ip 5016
1⤵
PID:3468

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\winlgon.exe

Filesize
74KB

MD5
adb6fd7a73e596020ce0b59aaad62d8d

SHA1
23c87064baabf7b27512b96e614381e037d3aa60

SHA256
915409728813dbd19072c68335e055f0a5d6e4570ba118555eb0860c47ef9aac

SHA512
6d7cf89ade466d8232ee9d7c781f1e9c3ceab9af4052382a2c509cace0d225d37813dd48eab219834f53dcbd2c6c6c790118f6689422202e84de15ce55660a10

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads