8806779abff872822b4b94dde8dcd73c44419fa9ff31b5feab2fee1b6aa04d9f

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 13:32

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General

Target

05161528_001_Atendimento - 731290.pdf
Size

91KB
MD5

a6fac4d87f27f08b1cc5aad695222c0b
SHA1

d55b9d1dd48e385735d104dc1be160cf1a72d18d
SHA256

8806779abff872822b4b94dde8dcd73c44419fa9ff31b5feab2fee1b6aa04d9f
SHA512

e0642ae8b7d585986f8b308763fa65fa7d92530286fef69d424f8e4bf2c7773e3c459b2f4061d38a341ef7937c627f1a36e64d0f54f82a7df32f58afce6e2e90
SSDEEP

1536:O201IainOXdirahtGDCa2hcBsSyFHOGZ4L+T9VEO1pQPGyRyQQ3ToYG:OF1IainOXUrah4DahbFHOGyybEOUOyo6

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RdrCEF.exe

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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe
2636	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 1552	2636	AcroRd32.exe	87
PID 2636 wrote to memory of 1552	2636	AcroRd32.exe	87
PID 2636 wrote to memory of 1552	2636	AcroRd32.exe	87
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 3372	1552	RdrCEF.exe	90
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91
PID 1552 wrote to memory of 1560	1552	RdrCEF.exe	91

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\05161528_001_Atendimento - 731290.pdf"
1⤵
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2636
- 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⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=6CCCF0646E8343D70546FB41E5D09C7F --mojo-platform-channel-handle=1732 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3372
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=2A074EEFAD90B8D503647F136E11C49E --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=2A074EEFAD90B8D503647F136E11C49E --renderer-client-id=2 --mojo-platform-channel-handle=1736 --allow-no-sandbox-job /prefetch:1
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1560
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=03775E000AF571A6E125E53031C8953A --mojo-platform-channel-handle=2276 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1064
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=1DFD4961DBDF384C844E23840F0D6B8E --mojo-platform-channel-handle=2388 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4088
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=CF5453067FBC162F948C6B0ADE044479 --mojo-platform-channel-handle=2364 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1444

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3116

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

System Location Discovery

T1614

System Language Discovery

T1614.001

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
64KB

MD5
1d67c47e1f8f528f6eb86d03ed9b86b9

SHA1
10e1a9324f4a02fca88c32227f27e77f49cde5aa

SHA256
a9fa5c48cfdc928d4362dd005927cff0439c84f311ede378944526680926db61

SHA512
ebc08104bdeec539b34bf3e9026876a911a46c4cf3fe3a64950327cbb34ee59171cb7c8c9f9826c04d9d822caf304ce33b960e7e8106c9425262c2faaea520f9

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

Filesize
36KB

MD5
b30d3becc8731792523d599d949e63f5

SHA1
19350257e42d7aee17fb3bf139a9d3adb330fad4

SHA256
b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3

SHA512
523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e

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

Filesize
56KB

MD5
752a1f26b18748311b691c7d8fc20633

SHA1
c1f8e83eebc1cc1e9b88c773338eb09ff82ab862

SHA256
111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131

SHA512
a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5

Download Submit