66b13fad78119e5cfb1933fba5effb8f2dbeae76bbdf21868b5ab2167567be80

Analysis

max time kernel
121s
max time network
127s
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

A.class
Size

666B
MD5

db316111c39d37b02f2f45adfda3568b
SHA1

ea7c91ba6ae51d0363755bdab7979f9b9c7605bf
SHA256

7ec2b85b6d0a9d03942b72933584ef4f3eb1048ea06d8f8edf8c9feda8e0bc0b
SHA512

fa8676b0515d71af52b6a2e96fec1337a8e71b63a983395c619f66f32e609af99e661a998d213b8be86af2857713a835ed137aba4db24bc0dc042ddf57ec9772

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-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\class_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_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-1-5-21-2958949473-3205530200-1453100116-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3020	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3020	AcroRd32.exe
3020	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2280	2384	cmd.exe	31
PID 2384 wrote to memory of 2280	2384	cmd.exe	31
PID 2384 wrote to memory of 2280	2384	cmd.exe	31
PID 2280 wrote to memory of 3020	2280	rundll32.exe	33
PID 2280 wrote to memory of 3020	2280	rundll32.exe	33
PID 2280 wrote to memory of 3020	2280	rundll32.exe	33
PID 2280 wrote to memory of 3020	2280	rundll32.exe	33

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\A.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\A.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2280
- - 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\A.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3020

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
ee5f36686956739eb0301912d72761fd

SHA1
1cd64104e1826c90fdf49991aaa06a28e1d37f6f

SHA256
2462a5cfe90d290fb64c997de3282d38d83c3127f6bc808048709f31ed8017d9

SHA512
c35918dfb78f3fd6b1e93c297660f98901b1044d53675f477d637c3c134f0050f501e949bfa9e492e48a15a46acce7c035cab2f1d46c0211d9fd65bd36b30dd7

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