86fd3e10f53379c41b740e719998bfdbeae563003b807009d44fb27f9b8aea6f

Analysis

max time kernel
119s
max time network
132s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 03:35

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General

Target

BepInEx/cache/chainloader_typeloader.dat
Size

2KB
MD5

9c9250f8cc889ad16f7804ee45052cde
SHA1

e8c1e76b879c22eaba39cdd5be07d214c93370eb
SHA256

ff4dd7cf07ed8db4d046f7ea2c58fcf738c84df64eef202c26460450587919d9
SHA512

ad3a2443c59c7925e96d006139da6cf2b1160a62bc01e5aa4c0cdb0b5756849a80f8e0da9da723ee8dcd90a188cb2ee4e66a1e18a2372fa6c85856b61c994461

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.dat	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\dat_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1432	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1432	AcroRd32.exe
1432	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2696	2508	cmd.exe	29
PID 2508 wrote to memory of 2696	2508	cmd.exe	29
PID 2508 wrote to memory of 2696	2508	cmd.exe	29
PID 2696 wrote to memory of 1432	2696	rundll32.exe	30
PID 2696 wrote to memory of 1432	2696	rundll32.exe	30
PID 2696 wrote to memory of 1432	2696	rundll32.exe	30
PID 2696 wrote to memory of 1432	2696	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\BepInEx\cache\chainloader_typeloader.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\BepInEx\cache\chainloader_typeloader.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\BepInEx\cache\chainloader_typeloader.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
4b5208273b969e49605c2acd971232e5

SHA1
c2987631c9da982926dcf55d182f0cdad49b4042

SHA256
91f0b75ec59474e72139f0558b15d903cedf09ec8eff682e4dddcd60609ff0ba

SHA512
6dab550c9d3be3b657eeddfbfc6b07c1a024ece2aeb36d32982a6dc35f4e5de8863a34c9f8ab2ddf52083500babb8df5906491062ac1ea2ceaa58edebdf2fedf

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