0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
121s
max time network
128s
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/applypatch-msg.sample
Size

478B
MD5

ce562e08d8098926a3862fc6e7905199
SHA1

4de88eb95a5e93fd27e78b5fb3b5231a8d8917dd
SHA256

0223497a0b8b033aa58a3a521b8629869386cf7ab0e2f101963d328aa62193f7
SHA512

536cce804d84e25813993efdd240537b52d00ce9cdcecf1982f85096d56a521290104c825c00b370b2752201952a9616a3f4e28c5d27a5b4e4842101a2ff9bee

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
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_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-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\sample_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.sample	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\sample_auto_file\shell\Read\command	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\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1658372521-4246568289-2509113762-1000_CLASSES\sample_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2832 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2832 AcroRd32.exe
2832 AcroRd32.exe

pid	process
2832	AcroRd32.exe

pid	process
2832	AcroRd32.exe
2832	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2824 wrote to memory of 2700	2824	cmd.exe	rundll32.exe
PID 2824 wrote to memory of 2700	2824	cmd.exe	rundll32.exe
PID 2824 wrote to memory of 2700	2824	cmd.exe	rundll32.exe
PID 2700 wrote to memory of 2832	2700	rundll32.exe	AcroRd32.exe
PID 2700 wrote to memory of 2832	2700	rundll32.exe	AcroRd32.exe
PID 2700 wrote to memory of 2832	2700	rundll32.exe	AcroRd32.exe
PID 2700 wrote to memory of 2832	2700	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\applypatch-msg.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:2824

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\applypatch-msg.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2700

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\applypatch-msg.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2832

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
3bbd72c944bfd6ca5419447a74dcd594

SHA1
c2bd4a2457b92d9e61782ff3172a9fa20be205e9

SHA256
489a2eae9d02d59b6612b4031ef6fa0843329c93887d6aa07416cb2d15e1469d

SHA512
b8e917d76fdd314bc92bd02f50218d49c4f012632c7c7c75386a542fb5c695d2ec7d4469833ffda1be97064f7298b536c918fe4eaf7fcd36fca6554dc059046d

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