705dffc3bbb0269cf07dd30663eac4d42774400a995d35b9a852f35d97548889

Resubmissions

11-03-2024 08:37

240311-kjdn6sfg5y 10

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-03-2024 08:37

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General

Target

Creal.pyc
Size

75KB
MD5

149b02314b58710b912b182e76e1f5c9
SHA1

314c9bf321d3cb5fd12b66771280eb444b0de9cb
SHA256

4546e2a2030e19289701fb5f78a8a0965ec99430a0cb53d6e1e24cebf02cacef
SHA512

a1d316e9f439abcda35d229cdd6291282c50125b79e90f8d98a7e87fd6c5634ab502db97e18cb7e59c8ba6cdb927fe9472f3e607510094a4ab07f0a09f66b6e4
SSDEEP

1536:auPDrge3uzTZMB7aK1gIEDjp9wgqpRPzTgMuqde:lPDUe3uz0Bn49/6PzTgMM

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-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2648	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2648	AcroRd32.exe
2648	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2640	2108	cmd.exe	29
PID 2108 wrote to memory of 2640	2108	cmd.exe	29
PID 2108 wrote to memory of 2640	2108	cmd.exe	29
PID 2640 wrote to memory of 2648	2640	rundll32.exe	30
PID 2640 wrote to memory of 2648	2640	rundll32.exe	30
PID 2640 wrote to memory of 2648	2640	rundll32.exe	30
PID 2640 wrote to memory of 2648	2640	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Creal.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Creal.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2640
- - 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\Creal.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2648

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
fcf98313c08ceeab7205c97edb041d53

SHA1
a7d4615700c5d896fee9dc375ed73687b1b4fcb9

SHA256
e1a10f661844daa63ca5284c6e4311e2cb286d36b42b5d1f5cb073f354168023

SHA512
d47deb4d4bdb6531b0eb70e6ced770d0fe7871b323085913a6f3b2e4ec72f628cca919ba1e076063d7d154e944bbdd49b02ef33c5b8083aa47d67fc3fee293a4

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