0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-03-2024 17:01

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General

Target

Chronos/src/main.py
Size

8KB
MD5

660b2363ff51aa963a14bbdaba15f241
SHA1

d36c59f767c98bb818f8aeef1f6980fcbc727e96
SHA256

7c129e8bd6c8b65a77dbc905185ba563fd24517aca52340ec5bc3da5e184317d
SHA512

721f22a76cd29d7f57d3eb272a53a070ea22a83fc1b51154ac5bf8620a9c9d576768c80f21ac9e5521be13ef11b19a4a0df47fbec5f06cd721a3ff171515d03b
SSDEEP

96:ACDxgru6xMqo3wg7Aq1YEeyG94XWI3tfnJdXuQsq0DbV1uhSvuhfndu7AR:Aj3Eey9mYfnJdXuQ6ruhSmhfndu7m

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

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2264 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2264 AcroRd32.exe
2264 AcroRd32.exe

pid	process
2264	AcroRd32.exe

pid	process
2264	AcroRd32.exe
2264	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1288 wrote to memory of 2560	1288	cmd.exe	rundll32.exe
PID 1288 wrote to memory of 2560	1288	cmd.exe	rundll32.exe
PID 1288 wrote to memory of 2560	1288	cmd.exe	rundll32.exe
PID 2560 wrote to memory of 2264	2560	rundll32.exe	AcroRd32.exe
PID 2560 wrote to memory of 2264	2560	rundll32.exe	AcroRd32.exe
PID 2560 wrote to memory of 2264	2560	rundll32.exe	AcroRd32.exe
PID 2560 wrote to memory of 2264	2560	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\src\main.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1288

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Chronos\src\main.py
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2560

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\Chronos\src\main.py"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2264

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
c1f700ec42d829da65c33da0e872fe87

SHA1
c432f313a32d5800d71bda0b28c84e19b42be970

SHA256
7d2fba807e1fde4935e8e047e158d88deb684d7a01eef5e3f1337d01281b9291

SHA512
c1e032d1f17d031442975a21f2c4e76de89d4a85e8a490a8a9f4175576538c9befbd2977fe138f945e6e9b303d2ae1bce4dffe941912d52fb10ab15fb1e2822f

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