a60b7a2ef406fd853f59afb392ba91901e059cb256ae7f09de38344c55de4fa0

Analysis

max time kernel
150s
max time network
31s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
09-06-2023 23:27

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General

Target

background.frag
Size

401B
MD5

eb3b4f8507914d38fd23d0701f85695e
SHA1

25af732a4b9622159d56d1fbc0ca1d5741ac3ca1
SHA256

415f25b0853747f7c26fcbf9b24378865ce4e26638785073badd8138a26056f0
SHA512

a38e50508998e9c2ea82115a78b6179696568bcecbc7792169370d63f8ec83d8680be9a79a86e09540fb86d077c29649e696aab2f5fff749d70462e8e1da5e38

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 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\.frag\ = "frag_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\frag_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\.frag	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

640 AcroRd32.exe
640 AcroRd32.exe
640 AcroRd32.exe

pid	process
640	AcroRd32.exe
640	AcroRd32.exe
640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 608 wrote to memory of 968	608	cmd.exe	rundll32.exe
PID 608 wrote to memory of 968	608	cmd.exe	rundll32.exe
PID 608 wrote to memory of 968	608	cmd.exe	rundll32.exe
PID 968 wrote to memory of 640	968	rundll32.exe	AcroRd32.exe
PID 968 wrote to memory of 640	968	rundll32.exe	AcroRd32.exe
PID 968 wrote to memory of 640	968	rundll32.exe	AcroRd32.exe
PID 968 wrote to memory of 640	968	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\background.frag
1⤵
- Suspicious use of WriteProcessMemory
PID:608

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\background.frag
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:968

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\background.frag"
3⤵
- Suspicious use of SetWindowsHookEx
PID:640

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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