9cd1233a50262eb8fb441f83dfacdf7ff435ce982640404217660e356e5eb9c4

Analysis

max time kernel
46s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
02-04-2023 16:42

Target

Crystalware b10/Crystalware b10.json
Size

3KB
MD5

2766098a8becc96aded98229d4c71599
SHA1

3a5c52a28e5fd84bf00a3fc1da37940d1631fa6d
SHA256

56440582d3ca9c00e04a7f4bff731a10556653906f9f210a0a963a9c67302a64
SHA512

a171b97d5c519c16cd9d436ec52aaa33e4e6d080504f6fda3d83de5edd1ee3c300127615305a85be0d9a60331f3cd60bcd6ec630991df8ee6aa16d82f565cc34

Score

3^/10

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.json	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\.json\ = "json_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000_CLASSES\json_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1208	2040	cmd.exe	29
PID 2040 wrote to memory of 1208	2040	cmd.exe	29
PID 2040 wrote to memory of 1208	2040	cmd.exe	29
PID 1208 wrote to memory of 1692	1208	rundll32.exe	30
PID 1208 wrote to memory of 1692	1208	rundll32.exe	30
PID 1208 wrote to memory of 1692	1208	rundll32.exe	30
PID 1208 wrote to memory of 1692	1208	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Crystalware b10\Crystalware b10.json"
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Crystalware b10\Crystalware b10.json
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1208
- - 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\Crystalware b10\Crystalware b10.json"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1692

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact