581926400593629e66631e28ae5fb343281cd7443f18fdf90e204bdb0f726f90

General

Target

20240403 - LLA phishing incident reported TLP AMBER V1.pdf
Size

770KB
MD5

4d23f9017c5a86c1f03a303a2b51cf73
SHA1

acee7f381030d1011d01ef839e04208a2f90de45
SHA256

581926400593629e66631e28ae5fb343281cd7443f18fdf90e204bdb0f726f90
SHA512

97d055cee4aba66141cc30903dd9cadf5b38da164bbf1280510792bb0249100693d6e59f21855351a952bf0a9ef7cf1c871b14d3a6d2fed5ef5f258733fba924
SSDEEP

24576:bKLXny+D28u18JVRNWgGQCYEH9lgJis1z426T:bKLXy+C8u1uNzGQCF9lgJis1/6T

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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

AcroRd32.exe

pid	process
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe
3548	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AcroRd32.exe

pid process

3548 AcroRd32.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

AcroRd32.exe

pid process

3548 AcroRd32.exe
3548 AcroRd32.exe
3548 AcroRd32.exe
3548 AcroRd32.exe
3548 AcroRd32.exe
3548 AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

AcroRd32.exeRdrCEF.exe

description	pid	process	target process
PID 3548 wrote to memory of 1344	3548	AcroRd32.exe	RdrCEF.exe
PID 3548 wrote to memory of 1344	3548	AcroRd32.exe	RdrCEF.exe
PID 3548 wrote to memory of 1344	3548	AcroRd32.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 812	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	RdrCEF.exe	RdrCEF.exe
PID 1344 wrote to memory of 4708	1344	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\20240403 - LLA phishing incident reported TLP AMBER V1.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:3548

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:1344

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=999DE8CE86D79E09C4866544C966F03D --mojo-platform-channel-handle=1748 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:812

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=433412EE260B53FC719A109234E404A1 --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=433412EE260B53FC719A109234E404A1 --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:1
3⤵
PID:4708

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=062FF2B54D4BCBD19A7FB2A9F0AB0AAA --mojo-platform-channel-handle=2284 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:1712

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=270F62C16309AD1D8E328DBAA1F9EC13 --mojo-platform-channel-handle=1892 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:2036

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=468CB9E132EF05C7E089F2B410010A3C --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=468CB9E132EF05C7E089F2B410010A3C --renderer-client-id=6 --mojo-platform-channel-handle=2432 --allow-no-sandbox-job /prefetch:1
3⤵
PID:4884

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=A4DC0F67623F720AEDCF72315BF73D4F --mojo-platform-channel-handle=2412 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
3⤵
PID:4372

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3376

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

MD5
fc85e7004d7a5a5b59eb4f1300b34862

SHA1
c316ce32090337ca09eac7a47f93b85600f79309

SHA256
174670b04d6d5dcaef2240260fc2e1f0e94c74398acd574bcd0b6564118d11b9

SHA512
db936c75bac4a96c0239f14b23a26e7f101393a06fab53c687c4f32c48cb918d1ffecbaf8d4ee6db4b19022b93fe83b1904f070e665bbf9360cb57500c69988b

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
memory/3548-130-0x000000000B0D0000-0x000000000B37B000-memory.dmp

Filesize
2.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads