fc8d83548946c9a31634fe617e804abce8a6e55561881dfda7c37f291da5bc7a

Analysis

max time kernel
174s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 14:41

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General

Target

3a21113c59a089c1d62dc26317f13933.pdf
Size

77KB
MD5

3a21113c59a089c1d62dc26317f13933
SHA1

9fd1f2f7943cb36f099fe10539f5f2bdca8a8594
SHA256

fc8d83548946c9a31634fe617e804abce8a6e55561881dfda7c37f291da5bc7a
SHA512

77e6c90ccf241d63600bea64824d4f74214a90fe883d8f9bdc327bf1eeb594664bbb40523c0b5461eb757e1c4d169d9c181fca8e9af96ed2a031dab1c3d9b977
SSDEEP

1536:W9QW2Kfah0hnIC7RV0egAhAJaGhGoJP8ET/ec+zvxF9WmpO+CWN3vBsvbDa0e0vN:NKgk6eg2EaAP8FFe+zKDDat0F

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AcroRd32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	AcroRd32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4520	AcroRd32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4520	AcroRd32.exe
4520	AcroRd32.exe
4520	AcroRd32.exe
4520	AcroRd32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 2584	4520	AcroRd32.exe	107
PID 4520 wrote to memory of 2584	4520	AcroRd32.exe	107
PID 4520 wrote to memory of 2584	4520	AcroRd32.exe	107
PID 4520 wrote to memory of 1304	4520	AcroRd32.exe	110
PID 4520 wrote to memory of 1304	4520	AcroRd32.exe	110
PID 4520 wrote to memory of 1304	4520	AcroRd32.exe	110

C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\3a21113c59a089c1d62dc26317f13933.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
  2⤵
  PID:2584
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
  2⤵
  PID:1304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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