55b83a18bfe96316e7b42c73e7aa9a69d0e0291e24125675b0d6bdc1c6637e79

General

Target

attachment20220806-4666-94q3mc.pdf
Size

923KB
MD5

057db28df65f1fa9d409bdb8c64f791b
SHA1

3a76d912b9a8f3d539e59e994b6903539ac9822a
SHA256

55b83a18bfe96316e7b42c73e7aa9a69d0e0291e24125675b0d6bdc1c6637e79
SHA512

651b9ff3b5a60d2126ff0bf7fd61a2f634cabb631ccf28551763519f20551551efe7b90a6a746b86e0e0471413b2ca9353acdd6416ef86b17a890bea0cee1655

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-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

AcroRd32.exe

pid process

3152 AcroRd32.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

AcroRd32.exe

pid process

3152 AcroRd32.exe
3152 AcroRd32.exe
3152 AcroRd32.exe
3152 AcroRd32.exe
3152 AcroRd32.exe

pid	process
3152	AcroRd32.exe

pid	process
3152	AcroRd32.exe
3152	AcroRd32.exe
3152	AcroRd32.exe
3152	AcroRd32.exe
3152	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

AcroRd32.exeRdrCEF.exe

description	pid	process	target process
PID 3152 wrote to memory of 4400	3152	AcroRd32.exe	RdrCEF.exe
PID 3152 wrote to memory of 4400	3152	AcroRd32.exe	RdrCEF.exe
PID 3152 wrote to memory of 4400	3152	AcroRd32.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 4956	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	RdrCEF.exe	RdrCEF.exe
PID 4400 wrote to memory of 3700	4400	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\attachment20220806-4666-94q3mc.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3152
- 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:4400
- - 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=F45D6E4D88D731CA7F3301636E216A70 --mojo-platform-channel-handle=1744 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4956
- - 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=F371492FE82923B4AC483C6F060983BF --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=1 --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=F371492FE82923B4AC483C6F060983BF --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:3700

Network

MITRE ATT&CK Enterprise v6

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

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Downloads

memory/3700-135-0x0000000000000000-mapping.dmp

Download
memory/4400-130-0x0000000000000000-mapping.dmp

Download
memory/4956-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads