3f8e85e0485931eadf032e42ead89f52003aee63ada9849e8e6ad72bfbd8b3c7

Analysis

max time kernel
206s
max time network
214s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/12/2023, 18:35

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General

Target

0c4420f1e61d86137e4ff846e087c27b.pdf
Size

13KB
MD5

0c4420f1e61d86137e4ff846e087c27b
SHA1

16189e2bc81da32970812adc69a8f79aa870438b
SHA256

3f8e85e0485931eadf032e42ead89f52003aee63ada9849e8e6ad72bfbd8b3c7
SHA512

c5cdbe8bdfe136ec485cebd7b34617ef32eb77436ae8152c2ec0aa7b95ac8c192942f0bb6fcaad9824b3aa4b5ba846a0d34e8c0861f436620e0d6cb247324df2
SSDEEP

384:6hzaNwAO9GiJlDmlAloSAhmbZ9/KNQi/60G7J8vKIs:ahZGirHAhmbZ9iNQC6dJiKH

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-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1580	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe
1580	AcroRd32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2696	1580	AcroRd32.exe	96
PID 1580 wrote to memory of 2696	1580	AcroRd32.exe	96
PID 1580 wrote to memory of 2696	1580	AcroRd32.exe	96
PID 1580 wrote to memory of 2112	1580	AcroRd32.exe	99
PID 1580 wrote to memory of 2112	1580	AcroRd32.exe	99
PID 1580 wrote to memory of 2112	1580	AcroRd32.exe	99
PID 1580 wrote to memory of 3148	1580	AcroRd32.exe	101
PID 1580 wrote to memory of 3148	1580	AcroRd32.exe	101
PID 1580 wrote to memory of 3148	1580	AcroRd32.exe	101

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\0c4420f1e61d86137e4ff846e087c27b.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580
- 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:2696
- 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:2112
- 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:3148

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
36KB

MD5
b30d3becc8731792523d599d949e63f5

SHA1
19350257e42d7aee17fb3bf139a9d3adb330fad4

SHA256
b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3

SHA512
523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e

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C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
56KB

MD5
752a1f26b18748311b691c7d8fc20633

SHA1
c1f8e83eebc1cc1e9b88c773338eb09ff82ab862

SHA256
111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131

SHA512
a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5

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