fc788d41f02145ba4f9086674464826cc596a0843b73b285f2ae3426439b2d82

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 20:34

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General

Target

Main/Keystrokes$KeystrokesMode.class
Size

2KB
MD5

a46e103e86b4aa71d8ae8a243151d560
SHA1

a042bd19c34869eebd48d10b22371abc65c55b77
SHA256

3d5f7f331a6af19e81a1b1e27dcfab52b2cceea6774a961df30948b1e4d12cf2
SHA512

6357db6decc6469a97a250bdf192166fcadc58e5feebcad7020549dfff4c16c113550a8e4809c7200de31747de60f59bfa9a4eb5413f8347f8b1b6267e6b3d6c

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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.class	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2412	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2412	AcroRd32.exe
2412	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2536	3012	cmd.exe	29
PID 3012 wrote to memory of 2536	3012	cmd.exe	29
PID 3012 wrote to memory of 2536	3012	cmd.exe	29
PID 2536 wrote to memory of 2412	2536	rundll32.exe	30
PID 2536 wrote to memory of 2412	2536	rundll32.exe	30
PID 2536 wrote to memory of 2412	2536	rundll32.exe	30
PID 2536 wrote to memory of 2412	2536	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Main\Keystrokes$KeystrokesMode.class
1⤵
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Main\Keystrokes$KeystrokesMode.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2536
- - 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\Main\Keystrokes$KeystrokesMode.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2412

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
c1721157edc3c217b8192946f0b1a27a

SHA1
8825cbcb37cc2879a5ff47ec35aff1bf5fa06ced

SHA256
c8b663f45767ae402020155786a415a08aec459291c2b130e7488fdac8e54b24

SHA512
04dda1ea55e98c677c79a93bf730f4305a0d36db008de601af2b9ab7fb2f37f6615fc4a86224b7c50f075c29e8537c56a79bdc052fec619790d82bde4d93dd15

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