2a20262c7cbd3ebd2ba5b36f3714731666fd53ab08bceebd9217dccb413cb754

Analysis

max time kernel
221s
max time network
236s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 13:07

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General

Target

loaders/pdfldr.pdf
Size

9KB
MD5

44a14296ed0fabd49f3655af743a2622
SHA1

8c7860b57c74318d7703dbcfa0cc8baa24f1dbed
SHA256

5fa336fc7a0e1b9524b76da3066a5f0bf992e2e171249d98f89633944195d026
SHA512

13f866a35efa67f645cc23e14c70fe3fe472653bd6de22afd36efc8868802ba41c0a9a9484e4849a76b904e352755d49585001e9f15f30c7dc3761abde861e5e
SSDEEP

192:tdhLjfrCByu+aG5vWrgycLZI/PjMTT7uOgDdYjsdAZufh:tfLPz/k5uaMn7AYWAYZ

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-1-5-21-2132103209-3755304320-2959162027-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe
4312	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4312 wrote to memory of 2216	4312	AcroRd32.exe	89
PID 4312 wrote to memory of 2216	4312	AcroRd32.exe	89
PID 4312 wrote to memory of 2216	4312	AcroRd32.exe	89
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 224	2216	RdrCEF.exe	90
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91
PID 2216 wrote to memory of 704	2216	RdrCEF.exe	91

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\loaders\pdfldr.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4312
- 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:2216
- - 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=7F314BEB45D79F3FB024879CE7B4EB64 --mojo-platform-channel-handle=1732 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:224
- - 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=A6EF1F6E3C8C71F0D2FBCE5D7EC3F182 --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=A6EF1F6E3C8C71F0D2FBCE5D7EC3F182 --renderer-client-id=2 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:704
- - 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=9A79ECB65964601D6B00BA852F750ACC --mojo-platform-channel-handle=2316 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:380
- - 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=EA97BAC12FD9A94539B99910D4DC1642 --mojo-platform-channel-handle=1800 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:776
- - 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=A7271E0B1074E9971DB91FBEADBEDA08 --mojo-platform-channel-handle=2384 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:3536

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4960

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
f00bcfb6a7def18befb734ac8a01a2c5

SHA1
8b0ec41d480d68e1de837d4c638a64d9c2da03b9

SHA256
a8098160b6863b4f4e37b0625c542a2f19788f5a231c595eeff6ec0a1a78dad1

SHA512
2f8e5ca7207b16880a3157a9430111f369aafdeeb55a1ac2e0eb3df3a07015d59a758a63971f77ada6df159f5199aa21c7d25160ad0044bd9f6b6546daf66bfd

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