d16dddc1e9ad69c5ef67afd93eb801c74ca5b95ec8b46741786c8c8ec47b1b1d

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-04-2024 14:29

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General

Target

base002.avd
Size

15KB
MD5

0c81faaf2e8a8668734e159e31367059
SHA1

7a8f9f679c25de849b7185de7e5302bdeedea55b
SHA256

5d68981bf1c14119b05b57a59ec918566c71e11da24a5b425e1d00a0324e9f95
SHA512

e59c03c4f70e3dbf0a043a1f9cac8f680738fd4b68527bf2be3070ed95429b460608f47c4261ab9672d9f0ee94edc42bae921370f3427a4e4870ac938b705e86
SSDEEP

384:2GroxvfRKLZy6XxbV1pj071IzRqMx14pPtbeQVRNWONm+R:xGvp8xbvpASqE1eRM70

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-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.avd	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.avd\ = "avd_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\avd_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2588 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2588 AcroRd32.exe
2588 AcroRd32.exe

pid	process
2588	AcroRd32.exe

pid	process
2588	AcroRd32.exe
2588	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2972 wrote to memory of 2516	2972	cmd.exe	rundll32.exe
PID 2972 wrote to memory of 2516	2972	cmd.exe	rundll32.exe
PID 2972 wrote to memory of 2516	2972	cmd.exe	rundll32.exe
PID 2516 wrote to memory of 2588	2516	rundll32.exe	AcroRd32.exe
PID 2516 wrote to memory of 2588	2516	rundll32.exe	AcroRd32.exe
PID 2516 wrote to memory of 2588	2516	rundll32.exe	AcroRd32.exe
PID 2516 wrote to memory of 2588	2516	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\base002.avd
1⤵
- Suspicious use of WriteProcessMemory
PID:2972

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\base002.avd
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2516

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\base002.avd"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2588

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
4d9bb223a82869e256bb81a58bab87da

SHA1
8470604b2d36e9e0bd6fa1d2b2d917f99cafff40

SHA256
818afbfccf02cec7a2d8f2de0f8d29c1f7813a5f5c7718da4ea432698ff1a5a3

SHA512
cd6c85bdae6e7bc6c250e92f0b44a858a1756081c642f09655acb34a8852db940e41ff5e13914aff8d0a17c09235244f33a7b98fb7effce6079db465a11c59d3

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