50721276a65393428971dad07c4a7508828740314fbf0872b38f95e77ead7b91

Analysis

max time kernel
162s
max time network
183s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2024, 09:54

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General

Target

3c8bd4cab473daa18655bb102788bbe8.pdf
Size

35KB
MD5

3c8bd4cab473daa18655bb102788bbe8
SHA1

be99615f7f535124998b8d574d7a4f936572268f
SHA256

50721276a65393428971dad07c4a7508828740314fbf0872b38f95e77ead7b91
SHA512

f7976c7cf28abc655892e4fdb29d0451fff4605cf7dd1b1c8ef4f4317dfb1270a7ae17b456a1cb6bfe7fb1ed04d98e4b47d5eea34e7f62045e80ba8817ae37a3
SSDEEP

768:nRAu1H8nlV/vsJiZm2pOVtV+4juHXV0Nd8UIXvgnL:ikqlozV+4jsRInL

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
4372	AcroRd32.exe
4372	AcroRd32.exe
4372	AcroRd32.exe
4372	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4372	AcroRd32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4372	AcroRd32.exe
4372	AcroRd32.exe
4372	AcroRd32.exe
4372	AcroRd32.exe
4372	AcroRd32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 2108	4372	AcroRd32.exe	103
PID 4372 wrote to memory of 2108	4372	AcroRd32.exe	103
PID 4372 wrote to memory of 2108	4372	AcroRd32.exe	103
PID 4372 wrote to memory of 4144	4372	AcroRd32.exe	104
PID 4372 wrote to memory of 4144	4372	AcroRd32.exe	104
PID 4372 wrote to memory of 4144	4372	AcroRd32.exe	104
PID 4372 wrote to memory of 3160	4372	AcroRd32.exe	108
PID 4372 wrote to memory of 3160	4372	AcroRd32.exe	108
PID 4372 wrote to memory of 3160	4372	AcroRd32.exe	108
PID 4372 wrote to memory of 4964	4372	AcroRd32.exe	110
PID 4372 wrote to memory of 4964	4372	AcroRd32.exe	110
PID 4372 wrote to memory of 4964	4372	AcroRd32.exe	110
PID 4372 wrote to memory of 488	4372	AcroRd32.exe	112
PID 4372 wrote to memory of 488	4372	AcroRd32.exe	112
PID 4372 wrote to memory of 488	4372	AcroRd32.exe	112

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\3c8bd4cab473daa18655bb102788bbe8.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:4372
- 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:2108
- 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:4144
- 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:3160
- 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:4964
- 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:488

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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