a60b7a2ef406fd853f59afb392ba91901e059cb256ae7f09de38344c55de4fa0

Analysis

max time kernel
150s
max time network
34s
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_decal.frag
Size

1KB
MD5

f92ae79bcd827edfeb9c2136904de433
SHA1

64c882194f0fca4da97b4a72ad49b7f83b3703fc
SHA256

a7b2899b26296abd5d7159cb4f88d792751d6ff02a0041222f25c20aac6b5b54
SHA512

5dd8e9b5cd74f47d27cb2b73185d22d128a3bdbf94d00e8b7487f9ecb4de386dd60275cbcc12daa7767e26f360b6a30bea01bee8af61236a36640e418ff6bb4c

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-1-5-21-1283023626-844874658-3193756055-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.frag	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.frag\ = "frag_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\frag_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1004 AcroRd32.exe
1004 AcroRd32.exe
1004 AcroRd32.exe

pid	process
1004	AcroRd32.exe
1004	AcroRd32.exe
1004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 932 wrote to memory of 1468	932	cmd.exe	rundll32.exe
PID 932 wrote to memory of 1468	932	cmd.exe	rundll32.exe
PID 932 wrote to memory of 1468	932	cmd.exe	rundll32.exe
PID 1468 wrote to memory of 1004	1468	rundll32.exe	AcroRd32.exe
PID 1468 wrote to memory of 1004	1468	rundll32.exe	AcroRd32.exe
PID 1468 wrote to memory of 1004	1468	rundll32.exe	AcroRd32.exe
PID 1468 wrote to memory of 1004	1468	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\background_decal.frag
1⤵
- Suspicious use of WriteProcessMemory
PID:932

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\background_decal.frag
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1468

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_decal.frag"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1004

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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