0a9a1e88137e6ac94b757c5d99c802ea22e4cf9e570af82598808f22df3479f2

Analysis

max time kernel
140s
max time network
140s
platform
windows10-1703_x64
resource
win10-20230915-en
resource tags

arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
submitted
25-09-2023 20:37

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General

Target

How-To-Install-Addin.pdf
Size

333KB
MD5

f623721e1d25fc4cc9d49bb4be2d11ea
SHA1

42e84297c8420f99c43239714b463c91fed3eccd
SHA256

1da33f02f009031c0a6dee86db1c9cbaf345d160965fe30e50341a5e0dc5541e
SHA512

edb95722090d2945af816897a4970ff87078a8fdc30b5c6d27b64d76fdd700476bc8fca48ca07ec56654de40f29030ec3526261b5c674592817b3e6a6a845c29
SSDEEP

6144:Izon0R15nANg6ZjuGYncqg49AMBYkcqmBY7TKYByLUT01hg7mgUdg6pmyoO:Iknc3nANgdGOeL5g7TXT01ymtxw2

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

Processes:

AcroRd32.exe

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

Processes:

AcroRd32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2713497151-363818805-1301026598-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

AcroRd32.exe

pid	process
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AcroRd32.exe

pid process

2972 AcroRd32.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

AcroRd32.exe

pid process

2972 AcroRd32.exe
2972 AcroRd32.exe
2972 AcroRd32.exe
2972 AcroRd32.exe
2972 AcroRd32.exe
2972 AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

AcroRd32.exeRdrCEF.exe

description	pid	process	target process
PID 2972 wrote to memory of 924	2972	AcroRd32.exe	RdrCEF.exe
PID 2972 wrote to memory of 924	2972	AcroRd32.exe	RdrCEF.exe
PID 2972 wrote to memory of 924	2972	AcroRd32.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 852	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe
PID 924 wrote to memory of 2112	924	RdrCEF.exe	RdrCEF.exe

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\How-To-Install-Addin.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:2972

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:924

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=591B992688DA2D53B5112679225139F6 --mojo-platform-channel-handle=1628 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:852

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=5E53F4099931BAD6F13CCF2FB7F75300 --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=5E53F4099931BAD6F13CCF2FB7F75300 --renderer-client-id=2 --mojo-platform-channel-handle=1636 --allow-no-sandbox-job /prefetch:1
3⤵
PID:2112

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=60D433784E5311FE8AD3659DA81F7DBA --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=60D433784E5311FE8AD3659DA81F7DBA --renderer-client-id=4 --mojo-platform-channel-handle=2228 --allow-no-sandbox-job /prefetch:1
3⤵
PID:5028

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=BAFA67AF2679ABB55B03756670341272 --mojo-platform-channel-handle=2440 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:3492

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=4A1A27CAB39CFF1EB0D096D6EAD8271A --mojo-platform-channel-handle=1864 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:4344

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=DFF8B4E79BF62D47410EEF0D58EAC282 --mojo-platform-channel-handle=1708 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:4940

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Filesize
64KB

MD5
55be784f12cadff3faddd0e7faff2591

SHA1
ba2399003962a34262070bdac2a8c95a4efbcfa8

SHA256
ab5f3709416629983c94b81d62f6276e32b5454b70fbfa02d3c7608aa68f792c

SHA512
79c2da954f63daba219c2548faf77c8543bf0c5c594e9e209dd156648c8f400b3acc3622163d5a764d252a3780b80e576a8ae1df47faf21cdaf955c2ec33807e

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