0ecfa9e9370f383a669aad9db9a28109c24226496b519e7383713c7c1deaf861

Analysis

max time kernel
117s
max time network
121s
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/pre-commit.sample
Size

1KB
MD5

305eadbbcd6f6d2567e033ad12aabbc4
SHA1

a79d057388ee2c2fe6561d7697f1f5efcff96f23
SHA256

f9af7d95eb1231ecf2eba9770fedfa8d4797a12b02d7240e98d568201251244a
SHA512

7cfb0a58abed1915ee1b261a1c661c7e2deea4e9227f77f5875af1a25c82e19245ba12dcb2f5052d994d0e81a3465daf37f9d8c670e17f9c96742f60fdfaaa56

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	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file\	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	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file\shell\Read\command	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_auto_file\shell\Read	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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2760 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2760 AcroRd32.exe
2760 AcroRd32.exe

pid	process
2760	AcroRd32.exe

pid	process
2760	AcroRd32.exe
2760	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1612 wrote to memory of 2824	1612	cmd.exe	rundll32.exe
PID 1612 wrote to memory of 2824	1612	cmd.exe	rundll32.exe
PID 1612 wrote to memory of 2824	1612	cmd.exe	rundll32.exe
PID 2824 wrote to memory of 2760	2824	rundll32.exe	AcroRd32.exe
PID 2824 wrote to memory of 2760	2824	rundll32.exe	AcroRd32.exe
PID 2824 wrote to memory of 2760	2824	rundll32.exe	AcroRd32.exe
PID 2824 wrote to memory of 2760	2824	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Chronos\.git\hooks\pre-commit.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:1612

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-commit.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2824

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-commit.sample"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2760

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
1920533adf7d623c6f6c5a8419bd6942

SHA1
4c7d56c9af3d4408ab60dff2ba1d6b9cbca93f48

SHA256
68230a721a2a7924d95ee7f993103337e9861644589e22f16e151f54be81e516

SHA512
218496fdb74fb5d8902831a9e1c4c12d06dff6310f7ccd5648be592eda74806d708493adadda18357fee3c19339279f08e4f310f5b86e943ba17521b6b6ba1ce

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