33f2d347acdb0e2188bed64bacd5d6b616959801c9dd60bc1ff0c138f7bb16fb

Analysis

max time kernel
118s
max time network
125s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 12:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

AK.class
Size

1KB
MD5

5252bcbed583e1fe5052c35632a55e3b
SHA1

12f6f05df0a1a3bd433ed796bf93c3d89a3b785d
SHA256

e095bd09303884d9e1d112e875557c6a6f7c988ff58c4d8c08ff25329eaf346e
SHA512

4a8c7b07a6b256f13c6a0247872e59a369b7a49e09fbc93497fbb7490dda955bd94e23aef62e5ead7aa627e0356109da4b531312807c13c77723717c33146989

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-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.class	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2728	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2728	AcroRd32.exe
2728	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2720	2976	cmd.exe	29
PID 2976 wrote to memory of 2720	2976	cmd.exe	29
PID 2976 wrote to memory of 2720	2976	cmd.exe	29
PID 2720 wrote to memory of 2728	2720	rundll32.exe	30
PID 2720 wrote to memory of 2728	2720	rundll32.exe	30
PID 2720 wrote to memory of 2728	2720	rundll32.exe	30
PID 2720 wrote to memory of 2728	2720	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AK.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AK.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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\AK.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2728

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

Loading Replay Monitor...

Downloads

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

Filesize
3KB

MD5
e7b0bfa1952fb29a958eed54a8dfb5bf

SHA1
937710be83724b4962e066247349ee7523d5f999

SHA256
aec7a306d81f6baddfb36c86d1fcd4c48541b5c31b483688b15c21590b40fe04

SHA512
1aeca14db7930213e70430f9f63a5c47412701e283bfd14e138c2fbd07635fc8400a7125f88cdebf8e63a64eea991ba758f267aaa4823b58c5e6dc10f89b8591

Download Submit