2c3fbdb3adbca8ef8c8640348f5d86d976595b3a41257d0cc2fdbfbb36cde15d

Resubmissions

07/03/2023, 19:01

230307-xn75ssag71 3

07/03/2023, 18:55

230307-xk1ljsag5x 3

Analysis

max time kernel
144s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2023, 18:55

Sharing

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General

Target

OC Justice Bid Letter - Final 2-24-23.pdf
Size

210KB
MD5

d741f661e0232257cebb1f31c7546125
SHA1

399a542628090c7ad6d3ee5edd6163ab014f827f
SHA256

2c3fbdb3adbca8ef8c8640348f5d86d976595b3a41257d0cc2fdbfbb36cde15d
SHA512

69f8d8c235adc7134f488ee5297e148b2c879674ae4e10aad6e39ca50b4bc6dffb470c8c4771c916bbff7e39486bf2c92e95e3179f455284fc08277f301c85c1
SSDEEP

6144:RgPS0nnPKuThLqWtUyX3DnxK/YXOsv3X48:e5PKcqLyX9K/+9v3o8

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-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3556	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe
3556	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 3712	3556	AcroRd32.exe	86
PID 3556 wrote to memory of 3712	3556	AcroRd32.exe	86
PID 3556 wrote to memory of 3712	3556	AcroRd32.exe	86
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 2528	3712	RdrCEF.exe	89
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90
PID 3712 wrote to memory of 4976	3712	RdrCEF.exe	90

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\OC Justice Bid Letter - Final 2-24-23.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:3556
- 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:3712
- - 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=C26E0034DD605F69896A6184AC9F19F5 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:2528
- - 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=B472B7833B4E877C3C4911D15303AE9D --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=2 --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=B472B7833B4E877C3C4911D15303AE9D --renderer-client-id=2 --mojo-platform-channel-handle=1752 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:4976
- - 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=538187483E266A30B4F99BF69BB2AB31 --mojo-platform-channel-handle=2312 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4940
- - 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=6A2E8ED8BB111485AC268674B6FF7BBA --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=2 --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=6A2E8ED8BB111485AC268674B6FF7BBA --renderer-client-id=5 --mojo-platform-channel-handle=1880 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:908
- - 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=F5464B67E9BBA366C6562A32FEDEC4B0 --mojo-platform-channel-handle=2664 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4456
- - 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=C58BD4EA483B95A89C66BA723C49F504 --mojo-platform-channel-handle=2340 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:3332

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1164

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

Loading Replay Monitor...

Downloads

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

Filesize
64KB

MD5
d249d36fa8dfb30caa8c218fb942e2b8

SHA1
9d45d59d73a861f3c84c20223ba64af0688df089

SHA256
429ce174cf44e00e476987c5f2285d76ee07eb779cd5bab3d484e7276d80f934

SHA512
add711a572a8499d6c9ef6d1fbd83203b129ce7f3aba147b1daebd5a30bfecc54ddafe9ff1d61371a6edaf4d5a294a146f42a05aa32b6a0ddf0af9956d4f50ba

Download Submit
memory/3556-158-0x0000000009F00000-0x0000000009F21000-memory.dmp

Filesize
132KB

Download
memory/3556-263-0x000000000B4D0000-0x000000000B77B000-memory.dmp

Filesize
2.7MB

Download