5705cdd93bd849acc4bfc1a9a2fa9b4c6f9e4b1dd1dbd43b0e8b35c32519d6d2

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-07-2024 08:06

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General

Target

MalwareBazaar.4
Size

90KB
MD5

e677d8183d89a410a3ce59db5a2722d3
SHA1

969255020b8e5b9cf16ffa6dd7c8f931e7b68ce7
SHA256

5705cdd93bd849acc4bfc1a9a2fa9b4c6f9e4b1dd1dbd43b0e8b35c32519d6d2
SHA512

8f7369c3de05953613c246a1312a6ccfb6c416e458ddd55efdfb96c0ef569832aea51a52527fbfd5f7c36e1613c59358c425e5d8cdbf51d5bf4fb63a2bc16cc5
SSDEEP

384:Vgn/TJl/8FdlK+gqigv0C7xAlEM5jUbTMbyi9thdIhFRi2mnk0PKk6Ut6jvWdlKv:YuF22+iM5jZbyShdIjFJu2

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.4\ = "4_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.4	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\4_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2816 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2816 AcroRd32.exe
2816 AcroRd32.exe

pid	process
2816	AcroRd32.exe

pid	process
2816	AcroRd32.exe
2816	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2576 wrote to memory of 2808	2576	cmd.exe	rundll32.exe
PID 2576 wrote to memory of 2808	2576	cmd.exe	rundll32.exe
PID 2576 wrote to memory of 2808	2576	cmd.exe	rundll32.exe
PID 2808 wrote to memory of 2816	2808	rundll32.exe	AcroRd32.exe
PID 2808 wrote to memory of 2816	2808	rundll32.exe	AcroRd32.exe
PID 2808 wrote to memory of 2816	2808	rundll32.exe	AcroRd32.exe
PID 2808 wrote to memory of 2816	2808	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.4
1⤵
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.4
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2808

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\MalwareBazaar.4"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2816

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
73eba0624c7a3719645f5accf83d53f7

SHA1
2f5a98f6f172729103d1f4aa5f6a51956bfcc934

SHA256
974c0e9cf6b0dc8f80efab9b364de6cfd1346db708ef722f5f79762222cc808f

SHA512
a10a00412933d65e758145959881ddd298edddd7c99e23f55314ea01a131402acf19015581d479e03188ad2f37abd92a1c98bda6d67d8effed2e46c4c9656831

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