0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22-03-2024 17:01

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General

Target

Chronos/.git/hooks/pre-applypatch.sample
Size

424B
MD5

054f9ffb8bfe04a599751cc757226dda
SHA1

f208287c1a92525de9f5462e905a9d31de1e2d75
SHA256

e15c5b469ea3e0a695bea6f2c82bcf8e62821074939ddd85b77e0007ff165475
SHA512

cb78aa7e9b9c146e5db65d86dd83f04e2b6942a06fab50c704a0fd900683f3b6ad1164e74afe2f267f6da91cdff0b9ab07713e12cefc6f8d741b5df194f4fda6

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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\sample_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.sample	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_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

2644 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2644 AcroRd32.exe
2644 AcroRd32.exe

pid	process
2644	AcroRd32.exe

pid	process
2644	AcroRd32.exe
2644	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2672 wrote to memory of 2544	2672	cmd.exe	rundll32.exe
PID 2672 wrote to memory of 2544	2672	cmd.exe	rundll32.exe
PID 2672 wrote to memory of 2544	2672	cmd.exe	rundll32.exe
PID 2544 wrote to memory of 2644	2544	rundll32.exe	AcroRd32.exe
PID 2544 wrote to memory of 2644	2544	rundll32.exe	AcroRd32.exe
PID 2544 wrote to memory of 2644	2544	rundll32.exe	AcroRd32.exe
PID 2544 wrote to memory of 2644	2544	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\pre-applypatch.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:2672

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\pre-applypatch.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2544

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\pre-applypatch.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2644

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
774397d305924426f1d9114d3160d30e

SHA1
98b60bb4a3a9d65d805f2732abe16c6f746a1936

SHA256
f95820bb404131f7335ad82931314b9deabb14db5f8aeaf4d2c92862957aa545

SHA512
1c7e199c34930e70cb0edd096a83414a22d25f21eca3c6276c3fb256a8cb0b12035ee9cb834051b8bb68445ad8965de328579a6af7f7e4fdcb610973b7f5b7f1

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