520ba83a65cba104dba028247def6d2355703277a5c74c1bf92b66c9ef5f3240

Analysis

max time kernel
155s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 03:49

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General

Target

47f2d34ad5ceff99b84280cfa53fcca0.pdf
Size

100KB
MD5

47f2d34ad5ceff99b84280cfa53fcca0
SHA1

457439cad738ce754c441529a7ad748aee4adbd7
SHA256

520ba83a65cba104dba028247def6d2355703277a5c74c1bf92b66c9ef5f3240
SHA512

2ec4923a19fa63902592fb48617b6342a990df423d816fbba67dbc67bb655265d356e8f9a619113b5398bab5693c52769e2c3512ce5c376c6afb042728a26253
SSDEEP

3072:vghKQ8hYgKko/i73ilMb+5S43aIOvGs1CSk/Nw:vVhjyi7h+5StI/E

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 behavior: EnumeratesProcesses 4 IoCs

pid	Process
4028	AcroRd32.exe
4028	AcroRd32.exe
4028	AcroRd32.exe
4028	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4028	AcroRd32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4028	AcroRd32.exe
4028	AcroRd32.exe
4028	AcroRd32.exe
4028	AcroRd32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 1196	4028	AcroRd32.exe	103
PID 4028 wrote to memory of 1196	4028	AcroRd32.exe	103
PID 4028 wrote to memory of 1196	4028	AcroRd32.exe	103
PID 4028 wrote to memory of 1936	4028	AcroRd32.exe	105
PID 4028 wrote to memory of 1936	4028	AcroRd32.exe	105
PID 4028 wrote to memory of 1936	4028	AcroRd32.exe	105
PID 4028 wrote to memory of 4876	4028	AcroRd32.exe	108
PID 4028 wrote to memory of 4876	4028	AcroRd32.exe	108
PID 4028 wrote to memory of 4876	4028	AcroRd32.exe	108
PID 4028 wrote to memory of 2324	4028	AcroRd32.exe	111
PID 4028 wrote to memory of 2324	4028	AcroRd32.exe	111
PID 4028 wrote to memory of 2324	4028	AcroRd32.exe	111
PID 4028 wrote to memory of 2120	4028	AcroRd32.exe	112
PID 4028 wrote to memory of 2120	4028	AcroRd32.exe	112
PID 4028 wrote to memory of 2120	4028	AcroRd32.exe	112
PID 4028 wrote to memory of 4348	4028	AcroRd32.exe	113
PID 4028 wrote to memory of 4348	4028	AcroRd32.exe	113
PID 4028 wrote to memory of 4348	4028	AcroRd32.exe	113

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\47f2d34ad5ceff99b84280cfa53fcca0.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:4028
- 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:1196
- 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:1936
- 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:4876
- 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:2324
- 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:2120
- 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:4348

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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