63f759bd173808c38dd4e55bdc707b22b85148835ad5b29e55c10bd3dfe44fa4

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20231201-en
resource tags

arch:x64arch:x86image:win7-20231201-enlocale:en-usos:windows7-x64system
submitted
02-12-2023 10:15

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General

Target

NEAS.Crealpy.py
Size

71KB
MD5

3f4e21c61051a245ca737aa76f04e830
SHA1

498e75afa88e0070edbc2337d6ddad652207cce6
SHA256

63f759bd173808c38dd4e55bdc707b22b85148835ad5b29e55c10bd3dfe44fa4
SHA512

c54e84817dcfd9a2eb00d6133b36e30baba715bf2e99d5735902631963523690f728608f0f997e71dbd0c5d20975d2b01404158dfd7fa7cd6687386166685a40
SSDEEP

1536:Q1kWRNlhFSQLhmVpoWk/lD1CZzQWrPmBvW:Q1kelhFhhguluz1q0

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-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1502336823-1680518048-858510903-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2748	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2748	AcroRd32.exe
2748	AcroRd32.exe
2748	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 2812	1988	cmd.exe	29
PID 1988 wrote to memory of 2812	1988	cmd.exe	29
PID 1988 wrote to memory of 2812	1988	cmd.exe	29
PID 2812 wrote to memory of 2748	2812	rundll32.exe	30
PID 2812 wrote to memory of 2748	2812	rundll32.exe	30
PID 2812 wrote to memory of 2748	2812	rundll32.exe	30
PID 2812 wrote to memory of 2748	2812	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\NEAS.Crealpy.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\NEAS.Crealpy.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2812
- - 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\NEAS.Crealpy.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2748

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
b8e9d40b86ba9f25a9410cd92b5751f4

SHA1
4b7d6baacbf01d8e7bc7cb9a7146d7a039004bd1

SHA256
92e06eecb5349df13dab4629b9ab7966b918ca473536aa4a651f70d5c93c960c

SHA512
99cd58fc5680758fcae3cb9e8569c46d125ec307aac887921e53af8a495fb36416df7a9baf256c2f7ea4b8cc321e38bc5e580b53ce4ec694226d11d3c1ea72c5

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