a794ac78882a744b97acebed7a6a76ac8b3cfdef9d38bd891aa262081e303d52

Analysis

max time kernel
148s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20231215-en
resource tags

arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
submitted
01-02-2024 15:22

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General

Target

doc/src/Use.pdf
Size

158KB
MD5

932e6228a51ca72b289d4e431530814e
SHA1

a98c42f80879d830993997253df1bbb71fd5ee31
SHA256

bed2c21c5e6f7a28a705a9ec36fd047afa8d5818e1b91968e5d8685510db35ce
SHA512

fd0b344325d6735d8fcff073520970d436c305b9f032e1698ee7ad8968f3fb0d1a61aa7b4e41718a6e2729ca02ceaccd82fc12fb83b429a8166e5ebddc0c7991
SSDEEP

3072:JcxrmL0HLnQ171wVV9Mg8UFtf5PI87KUSZXm1938xtlWOG/siDeojE:ShXPI8Oi938BWOGlY

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

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-334598701-2770630493-3015612279-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe
4412	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4412 wrote to memory of 1004	4412	AcroRd32.exe	77
PID 4412 wrote to memory of 1004	4412	AcroRd32.exe	77
PID 4412 wrote to memory of 1004	4412	AcroRd32.exe	77
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 4708	1004	RdrCEF.exe	78
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79
PID 1004 wrote to memory of 1888	1004	RdrCEF.exe	79

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\doc\src\Use.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4412
- 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:1004
- - 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=89730446CB0BABD2D9151067CFD79B3F --mojo-platform-channel-handle=1744 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    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=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=C7F5EA9269BEA315ADACD7EC7C147617 --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=C7F5EA9269BEA315ADACD7EC7C147617 --renderer-client-id=2 --mojo-platform-channel-handle=1748 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:1888
- - 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=B7FE76D536941F4CBF99F6340FFC9B2C --mojo-platform-channel-handle=2296 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:3472
- - 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=2708634FCEB8FE4B753C09B442DDFA5F --mojo-platform-channel-handle=1932 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:3156
- - 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=54A7D4B30CB9B8A67CF7495B3B921DC4 --mojo-platform-channel-handle=2308 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:2004

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
536a20529fd767daeff974618583975e

SHA1
817fd8aa67eac09403784f5182a80d358a1640a0

SHA256
b5aba9af5d33b6b3c434f18c1b4287191168d646271efdb5401db4b6e9488b7b

SHA512
fc7d9cf5428400a060345f0b8307326ee3898e3805fa8f9d49af66c61d59ed554105c559344aa2a2dd364a1603e29397511ee83bd6f8415cb1d57f27c8916397

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