66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13/07/2024, 17:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

AN.class
Size

765B
MD5

e8ace4ef3382fe481b50813b8920f6c4
SHA1

659bbe19eecc6031f4ee3127a64f1a01c11fac93
SHA256

9952756af9adf291f11c1dacab122ade37fbecf64233d64402c3124d63df397d
SHA512

5b59d72bce58028766d055908d2858e991e3314cf3822f5d9d5c35c7672e185210d6357203ec524e6aebc3a0ea389ad22e5bb8b5e91a505f72cfd780cdb7a687

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-1-5-21-3434294380-2554721341-1919518612-1000_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-1-5-21-3434294380-2554721341-1919518612-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\class_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2876	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	AcroRd32.exe
2876	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2508	2692	cmd.exe	31
PID 2692 wrote to memory of 2508	2692	cmd.exe	31
PID 2692 wrote to memory of 2508	2692	cmd.exe	31
PID 2508 wrote to memory of 2876	2508	rundll32.exe	33
PID 2508 wrote to memory of 2876	2508	rundll32.exe	33
PID 2508 wrote to memory of 2876	2508	rundll32.exe	33
PID 2508 wrote to memory of 2876	2508	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AN.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AN.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2508
- - 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\AN.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2876

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
2d19aa521345d495f8de8806b77e1bc3

SHA1
d8c7233278744498d573a6968d4bba4dbf4d005d

SHA256
e349ebc4065b5e56bc8e3419a7a863a483c692eabda3c219460caad500c40d79

SHA512
230b32be7b12e4d14197b9f1f147c89099aad62e0547ea61a78b4517e38a5f219f917fc8d96c72b6c8fd794a32545b48f4daad3687dda1c16d82bae632deaea0

Download Submit