0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
121s
max time network
125s
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/.git/hooks/commit-msg.sample
Size

896B
MD5

579a3c1e12a1e74a98169175fb913012
SHA1

ee1ed5aad98a435f2020b6de35c173b75d9affac
SHA256

1f74d5e9292979b573ebd59741d46cb93ff391acdd083d340b94370753d92437
SHA512

d6bb7fa747f4625adf1877f546565cbe812ca7dd4168f7e9068e6732555d8737eba549546cf5946649e3f38de82d173aaf9c160a4c9f9445655258b4c5f955eb

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2032 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2032 AcroRd32.exe
2032 AcroRd32.exe

pid	process
2032	AcroRd32.exe

pid	process
2032	AcroRd32.exe
2032	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 628 wrote to memory of 2688	628	cmd.exe	rundll32.exe
PID 628 wrote to memory of 2688	628	cmd.exe	rundll32.exe
PID 628 wrote to memory of 2688	628	cmd.exe	rundll32.exe
PID 2688 wrote to memory of 2032	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 2032	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 2032	2688	rundll32.exe	AcroRd32.exe
PID 2688 wrote to memory of 2032	2688	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\commit-msg.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:628

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\commit-msg.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2688

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\commit-msg.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2032

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
fc480b916adc25c5a2e87e83abd52721

SHA1
2a1c2a1f605dd4f3c5186c28c8aab82dca23a775

SHA256
c49dfd05f1e23c2d17b2839d459fb04c6f3268cef996c90b95acdc2aac60e827

SHA512
894f8ee635a8d1781d0d09ed75f8688ef1c76af2b5a5e701947d6e7f0e85e2b80d0da2a0f31879f8211c0573f947c331f54ba8f6b319eef160f1134df1ccef48

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