Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08-03-2024 08:47
Behavioral task
behavioral1
Sample
LOA (8).pdf
Resource
win10v2004-20240226-en
General
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Target
LOA (8).pdf
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Size
139KB
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MD5
dddff79f34f6ed0e5de6dbc19e40a95e
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SHA1
65f8c1bdf2b31646394ed93fa5065d72bc602818
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SHA256
808f3efb6a1826237870563641a7d1e69fb6a9d94e4a91a09d1c81bacc3ec811
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SHA512
9aba96fdfeb83a615aa6e8950dbd5c3fc5c2ba2fcf2134e4221252093f8b6598b4dd96a64c26999334dec1bfdf650e996a6cabff4a61c94da585c98c8978dcb6
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SSDEEP
3072:wrVjriqDSqWNSqWIrPDHEUPjdQeh7CeR7dc2BlxgJ3TJfJ7UEuTAH:wxSP/rjEUXf7dfAfJ7UzC
Malware Config
Signatures
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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-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION AcroRd32.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
pid Process 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 4264 svchost.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4212 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe 4212 AcroRd32.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4212 wrote to memory of 4328 4212 AcroRd32.exe 94 PID 4212 wrote to memory of 4328 4212 AcroRd32.exe 94 PID 4212 wrote to memory of 4328 4212 AcroRd32.exe 94 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2644 4328 RdrCEF.exe 97 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98 PID 4328 wrote to memory of 2356 4328 RdrCEF.exe 98
Processes
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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\LOA (8).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:4212 -
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⤵
- Suspicious use of WriteProcessMemory
PID:4328 -
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=D830EB41B90E17F9B391E4912D584B3E --mojo-platform-channel-handle=1740 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:2644
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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=7245419F113D9885078C49275D8D631B --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=7245419F113D9885078C49275D8D631B --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:13⤵PID:2356
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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=91A08142FF3E26B587C08FC9EAAE2C14 --mojo-platform-channel-handle=2188 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:3460
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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=B24A6594813DE782DE728CF2C6F17B3C --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=B24A6594813DE782DE728CF2C6F17B3C --renderer-client-id=5 --mojo-platform-channel-handle=2340 --allow-no-sandbox-job /prefetch:13⤵PID:8
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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=EED60041876ECA42D09D47367A155F32 --mojo-platform-channel-handle=2712 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:1284
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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=BCE81C19382BC942C93B35DFD3129535 --mojo-platform-channel-handle=2020 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:23⤵PID:4156
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C:\Windows\System32\CompPkgSrv.exeC:\Windows\System32\CompPkgSrv.exe -Embedding1⤵PID:4424
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵PID:2384
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4264
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
64KB
MD572bcbe25c85ab93445be9dc40bfe2b5a
SHA1c61f308fcdeda3caf6db0e2fed38b032b7555c6b
SHA25649257434aeaa719331c6360f305fce3a3b34f8d0df5daeeb54bc36a356bc33e3
SHA51258d8a5d9bda0d56eb0064838767c5a1143498f2558f05573a544283973ccdb164e2d2a005386257bbf3a68590d9253ddbe99a959b80e87041ca2d82f62155bc0
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Filesize
36KB
MD5b30d3becc8731792523d599d949e63f5
SHA119350257e42d7aee17fb3bf139a9d3adb330fad4
SHA256b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
SHA512523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
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Filesize
56KB
MD5752a1f26b18748311b691c7d8fc20633
SHA1c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA256111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
SHA512a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5