c3f250ab11d40bc8e68d90efa095da80a4e2c285d3d04e1c52434158345e2b47

Analysis

max time kernel
46s
max time network
16s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 08:59

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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-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\sample_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.sample	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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

2692 AcroRd32.exe
2692 AcroRd32.exe

pid	process
2692	AcroRd32.exe
2692	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2004 wrote to memory of 2064	2004	cmd.exe	rundll32.exe
PID 2004 wrote to memory of 2064	2004	cmd.exe	rundll32.exe
PID 2004 wrote to memory of 2064	2004	cmd.exe	rundll32.exe
PID 2064 wrote to memory of 2692	2064	rundll32.exe	AcroRd32.exe
PID 2064 wrote to memory of 2692	2064	rundll32.exe	AcroRd32.exe
PID 2064 wrote to memory of 2692	2064	rundll32.exe	AcroRd32.exe
PID 2064 wrote to memory of 2692	2064	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:2004

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:2064

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:2692

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
59bd82c6ebe723a56db8e391147b1a04

SHA1
079dfcfce2637e877167f57237f999f5bdf12276

SHA256
9f795607a183cc48d8ba856729b40298619bc315c9f8ecbeb44f7109622230f5

SHA512
f24ab347a5c24373b5e5aa0fc25a7d2f2b1baae741cef7d7d15c1cd3f213d48c85f474678387d38d88331da01aa7be0300d6eede42451d5fead619db35f9d92b

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