66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
102s
max time network
17s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 17:49

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General

Target

AI.class
Size

1KB
MD5

6052832e47ff1d08c89c2957514be322
SHA1

adbc4474a1db6762a31d1cf028a582759b024777
SHA256

b5a67c0889779ca821dc0eca097ccc705d2d7afa199444b5944a7c8dd253ae8d
SHA512

9bd3dee6e08e63595ba4137e08cf1db27f2059b6591f1c1493af247032cfafe3a4972e56d57a282ee9f74736b61a07f7beb7f50d99db55e0ff65e33207a50d52

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
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_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-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2716	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2716	AcroRd32.exe
2716	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2908	3060	cmd.exe	31
PID 3060 wrote to memory of 2908	3060	cmd.exe	31
PID 3060 wrote to memory of 2908	3060	cmd.exe	31
PID 2908 wrote to memory of 2716	2908	rundll32.exe	32
PID 2908 wrote to memory of 2716	2908	rundll32.exe	32
PID 2908 wrote to memory of 2716	2908	rundll32.exe	32
PID 2908 wrote to memory of 2716	2908	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AI.class
1⤵
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AI.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2908
- - 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\AI.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2716

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
1025b5950f27a833823b7d31e2fd856a

SHA1
4164e52ff8e212f0c0b07163f96a41a38fe0902b

SHA256
6e8b728a6a01f8c6d7571f5baa579151fc139ec4f0eee90b0e931d0dc1bbcbf2

SHA512
8d9119b200ca21896fa4098c085395f60463a19e7430e2f0dcc6196ee6d7ced60620275e36375e928af96829fd59b37d7ede9e452235593fa94c1944bae17814

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