7d390ef8f6e412b51f3627e635819abb4a3518d136c45dba1d7594f4613c6263

Analysis

max time kernel
160s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2024, 08:36

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General

Target
4062abd4f52fdf5eba2ae6ac45491cfe.pdf
Size 43KB
Sample240104-khj5kaefe7
SHA256 7d390ef8f6e412b51f3627e635819abb4a3518d136c45dba1d7594f4613c6263
MD5 4062abd4f52fdf5eba2ae6ac45491cfe
SHA1 2bc48f6895eae21e1a033316efc605038e662d33
SHA512 98b47ad5c25d4f03f6a43fa2b3422f99c083bca8807bb6aab3a5dcf2fbca0c4054913d454b08a5892aa77188b34fff39f0461934499b8c74fc60ace8ab383f9e
SSDEEP 768:rILxnpVnw1D7V0SFrzyi56yJwgashAtqDRsv+C9Y95BARZ3a4wu7I5ycigR:clnpVnw1Dh0S5uitigPblsv+J95Bk3aP
MD5 SHA1 SHA512 SSDEEP

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
3264	AcroRd32.exe
3264	AcroRd32.exe
3264	AcroRd32.exe
3264	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3264	AcroRd32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3264	AcroRd32.exe
3264	AcroRd32.exe
3264	AcroRd32.exe
3264	AcroRd32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 2776	3264	AcroRd32.exe	102
PID 3264 wrote to memory of 2776	3264	AcroRd32.exe	102
PID 3264 wrote to memory of 2776	3264	AcroRd32.exe	102
PID 3264 wrote to memory of 3296	3264	AcroRd32.exe	103
PID 3264 wrote to memory of 3296	3264	AcroRd32.exe	103
PID 3264 wrote to memory of 3296	3264	AcroRd32.exe	103
PID 3264 wrote to memory of 3920	3264	AcroRd32.exe	106
PID 3264 wrote to memory of 3920	3264	AcroRd32.exe	106
PID 3264 wrote to memory of 3920	3264	AcroRd32.exe	106
PID 3264 wrote to memory of 3704	3264	AcroRd32.exe	109
PID 3264 wrote to memory of 3704	3264	AcroRd32.exe	109
PID 3264 wrote to memory of 3704	3264	AcroRd32.exe	109
PID 3264 wrote to memory of 3736	3264	AcroRd32.exe	111
PID 3264 wrote to memory of 3736	3264	AcroRd32.exe	111
PID 3264 wrote to memory of 3736	3264	AcroRd32.exe	111
PID 3264 wrote to memory of 4384	3264	AcroRd32.exe	112
PID 3264 wrote to memory of 4384	3264	AcroRd32.exe	112
PID 3264 wrote to memory of 4384	3264	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\4062abd4f52fdf5eba2ae6ac45491cfe.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:3264
- 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:2776
- 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:3296
- 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:3920
- 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:3704
- 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:3736
- 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:4384

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

ReaderMessages

Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Size 36KB
SHA256 b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
MD5 b30d3becc8731792523d599d949e63f5
SHA1 19350257e42d7aee17fb3bf139a9d3adb330fad4
SHA512 523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
SSDEEP 24:TLiXlzkrFsgIFsxX3pALXmnHpkDGjmcxBSkomXk+2m9RFTsyg+wmf9Mzm+Zs3tGl:TqlmFTIF3XmHjBoGGR+jMz+LhT
MD5 SHA1 SHA512 SSDEEP

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ReaderMessages

Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Size 56KB
SHA256 111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
MD5 752a1f26b18748311b691c7d8fc20633
SHA1 c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA512 a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5
SSDEEP 192:wedRBvVrThe4p4/KhTB4p4CitZtkZsLRGVDbw6H3ph+v3YQa9:weZdThkKhBvkZsLRGlzh+vS9
MD5 SHA1 SHA512 SSDEEP

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