0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
118s
max time network
119s
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

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Chronos/.git/hooks/update.sample
Size

3KB
MD5

647ae13c682f7827c22f5fc08a03674e
SHA1

730e6bd5225478bab6147b7a62a6e2ae21d40507
SHA256

8d5f2fa83e103cf08b57eaa67521df9194f45cbdbcb37da52ad586097a14d106
SHA512

be3780974589d06eddba6fa0aa15a3e3dfe390e2827a1a6ae5cb83d6ac47e79ef9b1bbb53f067372f8dc70db0350d3770e78537fd3cfe734200ff824eca4cada

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.sample	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\sample_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

2356 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2356 AcroRd32.exe
2356 AcroRd32.exe

pid	process
2356	AcroRd32.exe

pid	process
2356	AcroRd32.exe
2356	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1580 wrote to memory of 3040	1580	cmd.exe	rundll32.exe
PID 1580 wrote to memory of 3040	1580	cmd.exe	rundll32.exe
PID 1580 wrote to memory of 3040	1580	cmd.exe	rundll32.exe
PID 3040 wrote to memory of 2356	3040	rundll32.exe	AcroRd32.exe
PID 3040 wrote to memory of 2356	3040	rundll32.exe	AcroRd32.exe
PID 3040 wrote to memory of 2356	3040	rundll32.exe	AcroRd32.exe
PID 3040 wrote to memory of 2356	3040	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\update.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\update.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3040

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\.git\hooks\update.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2356

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

Loading Replay Monitor...

Downloads

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

MD5
0e190ca7d8d2a6d81335f1f81c0171fe

SHA1
3243b7fea797cc7496b07a8572721c298bd5996f

SHA256
ddc949b1185594b0355a063a16ecea434ba0fd59894629ce3c95ea6309013eb7

SHA512
def88579fa5a96b5544813c28f09ba40356b89fec7799aff789b39d64206f9a868456ed982f3f8c27f0be2ed97cc3a5946910f204a5fee951e38a1dae0f13482

Download Submit