c3f250ab11d40bc8e68d90efa095da80a4e2c285d3d04e1c52434158345e2b47

Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 07:01

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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-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.sample	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2748 AcroRd32.exe
2748 AcroRd32.exe

pid	process
2748	AcroRd32.exe
2748	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2384 wrote to memory of 2676	2384	cmd.exe	rundll32.exe
PID 2384 wrote to memory of 2676	2384	cmd.exe	rundll32.exe
PID 2384 wrote to memory of 2676	2384	cmd.exe	rundll32.exe
PID 2676 wrote to memory of 2748	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2748	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2748	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2748	2676	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:2384

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:2676

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:2748

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
de1e66a23a65cbb343231c80bc58bf56

SHA1
e1d3b5a52e05bf1c10fc13bc5bd05a508b02b59e

SHA256
c5d82243ac0e72d854067994d19b42049ff222e98786331b166d6e7c02e84d85

SHA512
d75b271b98331fcc2d391a0ee5e9480f68ff2e184d72409fd11ed71d74d2e1463b5f8643e2ebe18db59b0dbd24c70fcb6754cc02197e31d2a82cec93e0d653e5

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