84df6cf2ec2855c0049d4f81424423bd80a8d487e076f4fc931ea4ef91cf16a7

Analysis

max time kernel
150s
max time network
125s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
22/07/2023, 23:59

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General

Target

testkey.pk8
Size

1KB
MD5

1823e4bcadb53e275a8ff8e1b261b7ad
SHA1

92de052cb804dea75f9815a66d7d3f6f911cdb63
SHA256

495675d32e89a149d5abe191f4e9c0e218b9068714e9b53a7c91e164a0741a23
SHA512

b0d46eee477ae57c4dcb417f4f5b7b51691620c51603ed9097bc0d1e39ce94a2d7ade29d1ab80819e3639fd404034dd025c13c824d9cb21ae71ae366a2ce21b1

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_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-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\.pk8	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\.pk8\ = "pk8_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\pk8_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2476	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2476	AcroRd32.exe
2476	AcroRd32.exe
2476	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1696	2348	cmd.exe	29
PID 2348 wrote to memory of 1696	2348	cmd.exe	29
PID 2348 wrote to memory of 1696	2348	cmd.exe	29
PID 1696 wrote to memory of 2476	1696	rundll32.exe	30
PID 1696 wrote to memory of 2476	1696	rundll32.exe	30
PID 1696 wrote to memory of 2476	1696	rundll32.exe	30
PID 1696 wrote to memory of 2476	1696	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\testkey.pk8
1⤵
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\testkey.pk8
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1696
- - 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\testkey.pk8"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2476

Network

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
8b1832690b1fda4c60473ec1e3aa0f1f

SHA1
e11cbfb32e82a19a6ed874202e16c5381987c168

SHA256
b2db38220d22976826c181880faf40f3401eca9977c5814b0348414b8bb9c190

SHA512
ad8f6168105d1497b2aacbde1a6fb63b674534324ac423888c3d436ca0fea3b17de6c22da01486e5a6f5e79621e2c08dfab9b41ee73d74d7adbf1958aac7d500

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