722f7e75b02698eacaad94470bb6e9bc6a8d188ef8c4d78d45a73efa0e680b36

Analysis

max time kernel
381s
max time network
309s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2023, 16:12

Sharing

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General

Target

GU_Career_Fair_October_2023.pdf
Size

943KB
MD5

60fa38ff212e524edef9d01cb3c0b0f6
SHA1

e076fcbff2e548bad2c9bb419aa64b7cd002b6b8
SHA256

ff16241cc1819faec33e8023c9e3a6e77a4c274ae380669c672391ad7c239ef7
SHA512

eefc7da3b57aea992a420ddab37ffd521f25c5e1eff8bd2f34216bc1ce533f51fbfad4070bef2409a35e5ef6b3d9e6cd89a9486ae21ad132f59abfed399c3ab9
SSDEEP

24576:/a7fsQPyW/NcizFlMVVjtiPmcVN2IyiRGpa6GyJnF:/a7fs9WlQVJwmc0aGpa6GuF

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AcroRd32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-618519468-4027732583-1827558364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3392	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe
3392	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3392 wrote to memory of 1320	3392	AcroRd32.exe	86
PID 3392 wrote to memory of 1320	3392	AcroRd32.exe	86
PID 3392 wrote to memory of 1320	3392	AcroRd32.exe	86
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 4712	1320	RdrCEF.exe	87
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88
PID 1320 wrote to memory of 380	1320	RdrCEF.exe	88

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\GU_Career_Fair_October_2023.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:3392
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:1320
- - 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=8BC0414BC9EC2CEB2CCDDDD6A793539F --mojo-platform-channel-handle=1748 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4712
- - 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=D17A3B6797025A5FC2CA711C1BB8DEB8 --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=D17A3B6797025A5FC2CA711C1BB8DEB8 --renderer-client-id=2 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:380
- - 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=AE4A0B8404B759A12C0BC19131B3F3DB --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=AE4A0B8404B759A12C0BC19131B3F3DB --renderer-client-id=4 --mojo-platform-channel-handle=2304 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:3908
- - 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=E0141759EE50BE3A24B4838CBCEDF36B --mojo-platform-channel-handle=2428 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4956
- - 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=E0553BB2DF5EBBC5B9553541A85C22ED --mojo-platform-channel-handle=2588 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:940
- - 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=56FEAD2CB17A981A50FED067F4AE630D --mojo-platform-channel-handle=2456 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:472

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3992

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

Loading Replay Monitor...

Downloads

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

Filesize
64KB

MD5
ccb0df2566ba0d621e481d22d39b78d6

SHA1
c8c2cc7afd370da8c15ee6f3667c84ab888982bb

SHA256
07fab9cade43bf2e6635dda920ffa07a0100a59fbd49e4ffde5fc0295a5c16ee

SHA512
338f025a744420527397de91c014292637e9ae7ec3a2e0b425321af1a3ff820e0810e93ba6c3e9e3e5af2542b627bce0a30de12250515fb97aad01e444f7fc78

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