612f65b084a3e340a70935f9726ed1d908ce5a1c214e7490a27e11149921f88d

Analysis

max time kernel
142s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 11:51

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General

Target
Introduction to Threat Hunting.pdf
Size 3.2MB
Sample240129-n1ffwaafdp
SHA256 612f65b084a3e340a70935f9726ed1d908ce5a1c214e7490a27e11149921f88d
MD5 b9359cab24c1a909f617503c74e00a9a
SHA1 5189b537e71f701a9033abe352d61cf5cdfcc6ee
SHA512 ff247a05d25e7f81b0f19037485adfaae00c10ac684b5360526de8d2712d32c75e3b0ffca3026948c12979c6e4f13d416be965cb14a1d61e8e9053cab83751b5
SSDEEP 98304:GjaYJFfffffffAILzLoAMZ5/rDH+VXfWu:bYJFfffffffXUTj/rDeV/
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1528	AcroRd32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe
1528	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 1068	1528	AcroRd32.exe	89
PID 1528 wrote to memory of 1068	1528	AcroRd32.exe	89
PID 1528 wrote to memory of 1068	1528	AcroRd32.exe	89
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3856	1068	RdrCEF.exe	93
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92
PID 1068 wrote to memory of 3508	1068	RdrCEF.exe	92

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\Introduction to Threat Hunting.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:1528
- 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:1068
- - 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=31AA23E55D6A16912070E54DF89B6D05 --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=31AA23E55D6A16912070E54DF89B6D05 --renderer-client-id=2 --mojo-platform-channel-handle=1756 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:3508
- - 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=999120674BC04D0E67416907BED1A8E8 --mojo-platform-channel-handle=1748 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:3856
- - 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=F0CD91FF6D32FA10D9860F7ACB4AF57C --mojo-platform-channel-handle=2296 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:592
- - 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=42AB25C599C54CE946276F0771133C3D --mojo-platform-channel-handle=1884 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4680
- - 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=274B4E0C55FEF9BFB3FF1F25D3A941F1 --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=274B4E0C55FEF9BFB3FF1F25D3A941F1 --renderer-client-id=6 --mojo-platform-channel-handle=1744 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:3756
- - 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=58E8519EBBCA529F9BB327BF73DBAD6D --mojo-platform-channel-handle=2816 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4720

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4564

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

ReaderMessages

Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Size 64KB
SHA256 9e2b4ea2c22e24286e4a388ad94204646650291eec188da7e197b34508718a27
MD5 6b850301abb7083ea77dd1995673eaf8
SHA1 e7e38c344b6c3ee08a11311830e6093affff47a1
SHA512 5928f34ed857cbed67c2da68d2090926afde5ee07c5e96d73d68b89df8f181b4f33229fe31740b7e129852d867179763b1c138f01c13c0a9c39cc6ad3bc8843e
SSDEEP 384:ye7dThatELJ8SWvDTGJCesZsLglKhubvGZsLRZh+vS4:W+elZsLQCZsL3hUS4
MD5 SHA1 SHA512 SSDEEP

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ReaderMessages

Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Size 36KB
SHA256 b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3
MD5 b30d3becc8731792523d599d949e63f5
SHA1 19350257e42d7aee17fb3bf139a9d3adb330fad4
SHA512 523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e
SSDEEP 24:TLiXlzkrFsgIFsxX3pALXmnHpkDGjmcxBSkomXk+2m9RFTsyg+wmf9Mzm+Zs3tGl:TqlmFTIF3XmHjBoGGR+jMz+LhT
MD5 SHA1 SHA512 SSDEEP

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ReaderMessages

Path C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages
Size 56KB
SHA256 111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131
MD5 752a1f26b18748311b691c7d8fc20633
SHA1 c1f8e83eebc1cc1e9b88c773338eb09ff82ab862
SHA512 a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5
SSDEEP 192:wedRBvVrThe4p4/KhTB4p4CitZtkZsLRGVDbw6H3ph+v3YQa9:weZdThkKhBvkZsLRGlzh+vS9
MD5 SHA1 SHA512 SSDEEP

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