687fe906afb5f05a5b0a8d61395417f97d4d0dd4ff82024c9f592d21c4b17936

Analysis

max time kernel
195s
max time network
207s
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, 13:24

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General

Target

37e7a9ee15394f64253ded7102651bc5.pdf
Size

82KB
MD5

37e7a9ee15394f64253ded7102651bc5
SHA1

056e2344e3d0015104c6067ceb5cff25593744c1
SHA256

687fe906afb5f05a5b0a8d61395417f97d4d0dd4ff82024c9f592d21c4b17936
SHA512

b7188a78cf8b7507c42c7b15248d8557d4a5c9511d2d8116bf6edfbf4f69433eff3134b9ece93f804038658af6d0846e7bcc71ca1b39140cd57a94e13e0eac25
SSDEEP

1536:7m37ZlrEW6OeueoSntwC9DX6xwtzdRdQwA79KTNVWHpOvTWCTFC4voyu1Srp5:y9teur6wCuczdfQjhKJzvvCFyCS

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 2 IoCs

pid	Process
4436	AcroRd32.exe
4436	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4436	AcroRd32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4436	AcroRd32.exe
4436	AcroRd32.exe
4436	AcroRd32.exe
4436	AcroRd32.exe
4436	AcroRd32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 4888	4436	AcroRd32.exe	93
PID 4436 wrote to memory of 4888	4436	AcroRd32.exe	93
PID 4436 wrote to memory of 4888	4436	AcroRd32.exe	93
PID 4436 wrote to memory of 4432	4436	AcroRd32.exe	97
PID 4436 wrote to memory of 4432	4436	AcroRd32.exe	97
PID 4436 wrote to memory of 4432	4436	AcroRd32.exe	97
PID 4436 wrote to memory of 3132	4436	AcroRd32.exe	100
PID 4436 wrote to memory of 3132	4436	AcroRd32.exe	100
PID 4436 wrote to memory of 3132	4436	AcroRd32.exe	100
PID 4436 wrote to memory of 5100	4436	AcroRd32.exe	104
PID 4436 wrote to memory of 5100	4436	AcroRd32.exe	104
PID 4436 wrote to memory of 5100	4436	AcroRd32.exe	104

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\37e7a9ee15394f64253ded7102651bc5.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:4436
- 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:4888
- 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:4432
- 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:3132
- 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:5100

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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