cc48d8c645c27dd850652c0a66e22dd2e1b62bbf6ad208f94b8f5847684a8d17

Analysis

max time kernel
143s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
21-05-2024 14:21

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General

Target

informe_payload.exe
Size

32KB
MD5

8606faa60b008da0ce43437dc81be1e2
SHA1

13444f825362a6a946b3a91b13784d78fe3fc422
SHA256

4de3dde86d66424d79fcb561ace579d6b22919f52505aa177bd161bcf4157c4f
SHA512

e23e310399baf03034b51f1be445ea01a6ef2ec4f82da43af6c4639dc28834d49119ddb83f40019ff6c9b45124da637d579ef5289620a13a7078284c7fead33b
SSDEEP

384:3ZzPGPxHwgaWu7/+ulyEMZBSbtR+aHD7N9wUjOreoKxDIqPODwPMShkm/cbFk1GJ:3FqiDZZgzw0qBPbhbO9Ysax58svre

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

winlogon.exe

pid process

2340 winlogon.exe

pid	process
2340	winlogon.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

winlogon.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SunJavaUpdateSched = "\"C:\\windows\\winlogon.exe\""	winlogon.exe

Drops file in Windows directory 2 IoCs

Processes:

informe_payload.exe

description	ioc	process
File created	\??\c:\windows\winlogon.exe	informe_payload.exe
File opened for modification	\??\c:\windows\winlogon.exe	informe_payload.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

informe_payload.exe

description	pid	process	target process
PID 3676 wrote to memory of 2340	3676	informe_payload.exe	winlogon.exe
PID 3676 wrote to memory of 2340	3676	informe_payload.exe	winlogon.exe
PID 3676 wrote to memory of 2340	3676	informe_payload.exe	winlogon.exe

C:\Users\Admin\AppData\Local\Temp\informe_payload.exe
"C:\Users\Admin\AppData\Local\Temp\informe_payload.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3676
- C:\windows\winlogon.exe
  "C:\windows\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:2340

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\winlogon.exe

Filesize
32KB

MD5
8606faa60b008da0ce43437dc81be1e2

SHA1
13444f825362a6a946b3a91b13784d78fe3fc422

SHA256
4de3dde86d66424d79fcb561ace579d6b22919f52505aa177bd161bcf4157c4f

SHA512
e23e310399baf03034b51f1be445ea01a6ef2ec4f82da43af6c4639dc28834d49119ddb83f40019ff6c9b45124da637d579ef5289620a13a7078284c7fead33b

Download Submit
memory/2340-9-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2340-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/3676-7-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download