Analysis
-
max time kernel
94s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2024, 06:15
Static task
static1
Behavioral task
behavioral1
Sample
Delegation Letter - AT18.pdf
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Delegation Letter - AT18.pdf
Resource
win10v2004-20240802-en
General
-
Target
Delegation Letter - AT18.pdf
-
Size
345KB
-
MD5
6b9a85e606c6aee904e93fb6fd97b3a2
-
SHA1
8703ac9f84508cec4151cfaad7f1ac53b63e4c1b
-
SHA256
c87d9eaa8e338875390a23f9b45825a022703ab998a4679ac34c2335d497c4ec
-
SHA512
492a68dd81c1039dcc9096b95bd5627af7527f162d01ccda254c762177978540cbdf3008bfecbc725891cc3e470c5be0a77f65d42080f8f433f306514252646f
-
SSDEEP
6144:DjTVooku1M/RBTtS022jeVfo991dtrjqZbqcJh66OguGk9ABJ/:3TVDG/R9b22SWpmZbNcGkWBV
Malware Config
Signatures
-
System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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 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.
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 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2208 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe 2208 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2208 wrote to memory of 2980 2208 AcroRd32.exe 84 PID 2208 wrote to memory of 2980 2208 AcroRd32.exe 84 PID 2208 wrote to memory of 2980 2208 AcroRd32.exe 84 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 3088 2980 RdrCEF.exe 87 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88 PID 2980 wrote to memory of 4664 2980 RdrCEF.exe 88
Processes
-
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\Delegation Letter - AT18.pdf"1⤵
- System Location Discovery: System Language Discovery
- 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:2208 -
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=165140432⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2980 -
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=58C39FF861294EEF5450E24191227427 --mojo-platform-channel-handle=1744 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:3088
-
-
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=1DDEF25524400890E36F3315BE3F96DE --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=1DDEF25524400890E36F3315BE3F96DE --renderer-client-id=2 --mojo-platform-channel-handle=1764 --allow-no-sandbox-job /prefetch:13⤵
- System Location Discovery: System Language Discovery
PID:4664
-
-
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=2B1BB79C23FC401AB8E2B63BB94553C9 --mojo-platform-channel-handle=2272 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:4704
-
-
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=045243E918402C64A23523CEFF23B7F0 --mojo-platform-channel-handle=2316 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:2504
-
-
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=828A0E36C819A07005E474C561763C92 --mojo-platform-channel-handle=1936 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵
- System Location Discovery: System Language Discovery
PID:3096
-
-
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=59BCD89C1F58AB85D6E311F18A87DA0E --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=59BCD89C1F58AB85D6E311F18A87DA0E --renderer-client-id=7 --mojo-platform-channel-handle=2296 --allow-no-sandbox-job /prefetch:13⤵
- System Location Discovery: System Language Discovery
PID:4764
-
-
-
C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:1956
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
64KB
MD5596ed05d54868c03d0f222f0a88e966d
SHA14e4196ccefe59319dda6ee7d3acfa602cd4f112b
SHA256724648a1a038ac674efe65c63e641ed4a08db60c62fd15851b6293afc753ad2e
SHA512861081a4e6c7c08279f0c76fc5e17305ea7c7a0fb2a336636b54924545b06c8db9541bedab325f4c0bf3a30d190905657ebc67916a772fdc443369bb71e3320e
-
Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
-
Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5