d033c2edc69d9b0300382727b5cd395531fbdc12676527cb24c6cd15896f093c

Resubmissions

17/03/2023, 20:11

230317-yygk9sbg8t 1

Analysis

max time kernel
151s
max time network
255s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17/03/2023, 20:11

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General

Target

BuroDeCredito/BuroDeCredito/--4jI07xOLUueF5eHVPG_Js19.pdf
Size

119KB
MD5

249566af1ee52317ed98f43e50a86418
SHA1

bd559319fd2dd632dad6368a8c8ad8472e1945d0
SHA256

85c4f7ee47d0dcc06b6c2b5948d5f9c20527a5c666d49dd79cf3305e5d16c075
SHA512

fa67b58bf4be5f559a895aeb7a938c925e6dbb831cc9180972949449d540149d2816117f199e70cdc97c65e953a6b95822bf995485c55270eae073ecba1069d0
SSDEEP

3072:33hguqJzx+KywlozICBiH0uCYcr00wYyBkXwm61pQJxXipyzc:3+RH8IYiUuCY8yQ+

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-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3176	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe
3176	AcroRd32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 5008	3176	AcroRd32.exe	93
PID 3176 wrote to memory of 5008	3176	AcroRd32.exe	93
PID 3176 wrote to memory of 5008	3176	AcroRd32.exe	93
PID 3176 wrote to memory of 4440	3176	AcroRd32.exe	94
PID 3176 wrote to memory of 4440	3176	AcroRd32.exe	94
PID 3176 wrote to memory of 4440	3176	AcroRd32.exe	94
PID 3176 wrote to memory of 1864	3176	AcroRd32.exe	95
PID 3176 wrote to memory of 1864	3176	AcroRd32.exe	95
PID 3176 wrote to memory of 1864	3176	AcroRd32.exe	95
PID 3176 wrote to memory of 4116	3176	AcroRd32.exe	96
PID 3176 wrote to memory of 4116	3176	AcroRd32.exe	96
PID 3176 wrote to memory of 4116	3176	AcroRd32.exe	96
PID 3176 wrote to memory of 2876	3176	AcroRd32.exe	97
PID 3176 wrote to memory of 2876	3176	AcroRd32.exe	97
PID 3176 wrote to memory of 2876	3176	AcroRd32.exe	97
PID 3176 wrote to memory of 1748	3176	AcroRd32.exe	98
PID 3176 wrote to memory of 1748	3176	AcroRd32.exe	98
PID 3176 wrote to memory of 1748	3176	AcroRd32.exe	98

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\BuroDeCredito\BuroDeCredito\--4jI07xOLUueF5eHVPG_Js19.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:3176
- 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:5008
- 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:4440
- 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:1864
- 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:4116
- 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:2876
- 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:1748

Network

MITRE ATT&CK Enterprise v6

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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C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
64KB

MD5
0c039df15b194fb3c9133b262639a5f3

SHA1
15d81d163ee53cf7d591c9f58478dfa91abc3c5a

SHA256
8bb56e6e6d03a6b16ccfe8535dd7e62810fca234afa382ac1925e9ff72728a04

SHA512
2dd941174a9188405ecf3f5ea54ddae342d2b2ed6fff650ee02ca703817e2616becdcd951e76cb8744689955c1e15d9ce5b636aa30c532f6146b258fcc80b757

Download Submit