223634cf76d414acd946465324e15a7d17cef3192f34c25bc36880604b72ef3d

Analysis

max time kernel
201s
max time network
215s
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 04:12

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General

Target

27ad8b4411af081db734498e5ac0621c.pdf
Size

40KB
MD5

27ad8b4411af081db734498e5ac0621c
SHA1

f1483a5725819e93cee58e4d5b69920a2966d8f1
SHA256

223634cf76d414acd946465324e15a7d17cef3192f34c25bc36880604b72ef3d
SHA512

1c0f27caa02301fad9caa8f75fa23b045f2c7897ba9fb20f21c7651035f6159f55f3fce59e30824e33492cb7586755708345e41bc7ce679e7d0408ad1693749c
SSDEEP

768:ydzLsfzc+c+XJ0l6kT9ub1huvkvPBvjEO8BAZ8ws9Vq+vsuga9aJAU:IzLwKfT9uqw54AZBeVls3JAU

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 use of FindShellTrayWindow 1 IoCs

pid	Process
4192	AcroRd32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4192	AcroRd32.exe
4192	AcroRd32.exe
4192	AcroRd32.exe
4192	AcroRd32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 4268	4192	AcroRd32.exe	100
PID 4192 wrote to memory of 4268	4192	AcroRd32.exe	100
PID 4192 wrote to memory of 4268	4192	AcroRd32.exe	100
PID 4192 wrote to memory of 4576	4192	AcroRd32.exe	103
PID 4192 wrote to memory of 4576	4192	AcroRd32.exe	103
PID 4192 wrote to memory of 4576	4192	AcroRd32.exe	103

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\27ad8b4411af081db734498e5ac0621c.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192
- 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:4268
- 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:4576

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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