c3f250ab11d40bc8e68d90efa095da80a4e2c285d3d04e1c52434158345e2b47

Analysis

max time kernel
18s
max time network
17s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 08:58

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General

Target

CVE-2023-38831/.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-1-5-21-481678230-3773327859-3495911762-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_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-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\sample_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\.sample	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\sample_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2728 AcroRd32.exe
2728 AcroRd32.exe

pid	process
2728	AcroRd32.exe
2728	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1968 wrote to memory of 2660	1968	cmd.exe	rundll32.exe
PID 1968 wrote to memory of 2660	1968	cmd.exe	rundll32.exe
PID 1968 wrote to memory of 2660	1968	cmd.exe	rundll32.exe
PID 2660 wrote to memory of 2728	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2728	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2728	2660	rundll32.exe	AcroRd32.exe
PID 2660 wrote to memory of 2728	2660	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CVE-2023-38831\.git\hooks\update.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\CVE-2023-38831\.git\hooks\update.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2660

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\CVE-2023-38831\.git\hooks\update.sample"
3⤵
- Suspicious use of SetWindowsHookEx
PID:2728

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
79a64607021ebeb44c5936797746d941

SHA1
655bc53514123d0cd7b3df494204cc0885406721

SHA256
12ce4dfb08f4d01960f734b3426ec1a059285864808c5109d36984ddeb6da91d

SHA512
24fa26b88937c07590054838bccd20099830e1bf36a5d3ca095452fecff33c526cf66dce73eae08fcefbd4780a38e2d29abeb0966227f6e87411455ad14c9a9a

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